v4.3.2 - Implemented Swipe-to-Focus behavior, minor fixes

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/release.yml

@@ -25,50 +25,54 @@ jobs:
           java-version: '17'
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v5
+        uses: gradle/actions/setup-gradle@v6
 
       - name: Assemble Artifacts
-        run: |
-          ./gradlew assembleRelease
-          ./gradlew bundleRelease
+        run: ./gradlew assembleRelease bundleRelease
 
       - name: Sign APK
-        uses: r0adkll/sign-android-release@v1
-        id: sign_apk
-        with:
-          releaseDirectory: app/build/outputs/apk/release
-          signingKeyBase64: ${{ secrets.KEY_STORE }}
-          keyStorePassword: ${{ secrets.KEY_STORE_PASSWORD }}
-          alias: ${{ secrets.KEY_ALIAS }}
-          keyPassword: ${{ secrets.KEY_PASSWORD }}
-        env:
-          BUILD_TOOLS_VERSION: "36.0.0"
+        run: |
+          echo "${{ secrets.KEY_STORE }}" | base64 -d > keystore.jks
+          APK=$(find app/build/outputs/apk/release -name "*.apk" | head -1)
+          BUILD_TOOLS=$(ls -d ${ANDROID_HOME}/build-tools/*/ | sort -V | tail -1)
+          ${BUILD_TOOLS}apksigner sign \
+            --ks keystore.jks \
+            --ks-pass pass:${{ secrets.KEY_STORE_PASSWORD }} \
+            --ks-key-alias ${{ secrets.KEY_ALIAS }} \
+            --key-pass pass:${{ secrets.KEY_PASSWORD }} \
+            --out app/build/outputs/apk/release/look4sat.apk \
+            "$APK"
+          rm keystore.jks
 
       - name: Sign Bundle
-        uses: r0adkll/sign-android-release@v1
-        id: sign_bundle
-        with:
-          releaseDirectory: app/build/outputs/bundle/release
-          signingKeyBase64: ${{ secrets.KEY_STORE }}
-          keyStorePassword: ${{ secrets.KEY_STORE_PASSWORD }}
-          alias: ${{ secrets.KEY_ALIAS }}
-          keyPassword: ${{ secrets.KEY_PASSWORD }}
-        env:
-          BUILD_TOOLS_VERSION: "36.0.0"
-
-      - name: Rename Artifacts
         run: |
-          mv ${{steps.sign_apk.outputs.signedReleaseFile}} app/build/outputs/apk/release/look4sat.apk
-          mv ${{steps.sign_bundle.outputs.signedReleaseFile}} app/build/outputs/apk/release/look4sat.aab
+          echo "${{ secrets.KEY_STORE }}" | base64 -d > keystore.jks
+          AAB=$(find app/build/outputs/bundle/release -name "*.aab" | head -1)
+          jarsigner -verbose -sigalg SHA256withRSA -digestalg SHA-256 \
+            -keystore keystore.jks \
+            -storepass ${{ secrets.KEY_STORE_PASSWORD }} \
+            -keypass ${{ secrets.KEY_PASSWORD }} \
+            "$AAB" ${{ secrets.KEY_ALIAS }}
+          rm keystore.jks
 
-      - name: Deploy Bundle
-        uses: r0adkll/upload-google-play@v1
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
         with:
-          serviceAccountJsonPlainText: ${{secrets.SERVICE_ACCOUNT_JSON}}
-          packageName: com.rtbishop.look4sat
-          releaseFiles: app/build/outputs/apk/release/look4sat.aab
-          track: production
-          whatsNewDirectory: fastlane/metadata/android/en-US/whatsnew
+          ruby-version: '3.3'
+
+      - name: Deploy Bundle to Google Play
+        run: |
+          gem install fastlane --no-document
+          AAB=$(find app/build/outputs/bundle/release -name "*.aab" | head -1)
+          echo '${{ secrets.SERVICE_ACCOUNT_JSON }}' > service_account.json
+          fastlane supply \
+            --aab "$AAB" \
+            --json_key service_account.json \
+            --package_name com.rtbishop.look4sat \
+            --track production \
+            --skip_upload_images true \
+            --skip_upload_screenshots true \
+          rm service_account.json
 
       - name: Create Release
         run: |

app/src/main/AndroidManifest.xml

@@ -14,9 +14,11 @@
 
     <application
         android:name=".MainApplication"
+        android:allowBackup="false"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
-        android:roundIcon="@mipmap/ic_launcher_round">
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:usesCleartextTraffic="true">
 
         <activity
             android:name=".MainActivity"

app/src/main/java/com/rtbishop/look4sat/MainScreen.kt

@@ -76,11 +76,11 @@ import com.rtbishop.look4sat.feature.settings.SettingsDestination
 fun MainScreen() {
     val backStack = rememberNavBackStack(Screen.Passes)
     val currentKey = backStack.lastOrNull()
-    val navigateBack: () -> Unit = { backStack.removeAt(backStack.size - 1) }
+    val navigateBack: () -> Unit = { if (backStack.size > 1) backStack.removeAt(backStack.size - 1) }
     val fadeTransition = fadeIn(animationSpec = tween(350)) togetherWith fadeOut(animationSpec = tween(350))
 //    val slideInTransition = slideInHorizontally(initialOffsetX = { it }) togetherWith scaleOut(targetScale = 0.9f)
 //    val slideOutTransition = scaleIn(initialScale = 0.9f) togetherWith slideOutHorizontally(targetOffsetX = { it })
-    val navItems = listOf(Screen.Satellites, Screen.Passes, Screen.Radar(), Screen.Map, Screen.Settings)
+    val navItems = listOf(Screen.Satellites, Screen.Passes, Screen.Radar, Screen.Map, Screen.Settings)
 
     val context = LocalContext.current
     val container = (context.applicationContext as IContainerProvider).getMainContainer()
@@ -138,25 +138,15 @@ fun MainScreen() {
                     }
                     entry<Screen.Passes> {
                         PassesDestination { catNum, aosTime ->
-                            backStack.add(Screen.Radar(catNum, aosTime))
+                            container.satelliteRepo.selectPass(catNum, aosTime)
+                            backStack.add(Screen.Radar)
                         }
                     }
-                    entry<Screen.Radar> { route ->
-                        RadarDestination(
-                            catNum = route.catNum,
-                            aosTime = route.aosTime,
-                            navigateUp = navigateBack,
-                            navigateToRadioControl = { catNum, aosTime ->
-                                backStack.add(Screen.RadioControl(catNum, aosTime))
-                            }
-                        )
+                    entry<Screen.Radar> {
+                        RadarDestination(navigateToRadioControl = { backStack.add(Screen.RadioControl) })
                     }
-                    entry<Screen.RadioControl> { route ->
-                        RadioControlDestination(
-                            catNum = route.catNum,
-                            aosTime = route.aosTime,
-                            navigateUp = navigateBack
-                        )
+                    entry<Screen.RadioControl> {
+                        RadioControlDestination(navigateUp = navigateBack)
                     }
                     entry<Screen.Map> {
                         MapDestination()
@@ -184,7 +174,8 @@ fun MainScreen() {
                         .clickable {
                             val pass = trackingState.currentPass
                             if (pass != null) {
-                                backStack.add(Screen.RadioControl(pass.catNum, pass.aosTime))
+                                container.satelliteRepo.selectPass(pass.catNum, pass.aosTime)
+                                backStack.add(Screen.RadioControl)
                             }
                         }
                         .padding(horizontal = 12.dp, vertical = 6.dp)

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/DatabaseRepo.kt

@@ -40,28 +40,22 @@ class DatabaseRepo(
     private val settingsRepo: ISettingsRepo
 ) : IDatabaseRepo {
 
-    private companion object {
-        val tleTypes = setOf("Amsat", "R4UAB", "Other")
-        val zippedTleTypes = setOf("McCants", "Classified")
-    }
+    private val customSourceType = "Other"
 
     override suspend fun updateTLEFromFile(uri: String) = withContext(dispatcher) {
         remoteSource.getFileStream(uri)?.let { stream ->
-            val entries = dataParser.parseTLEStream(stream)
+            val entries = dataParser.parseTLEStream(unwrapIfZipped(uri, stream))
             localSource.insertEntries(entries)
-            settingsRepo.setSatelliteTypeIds("Other", entries.map { it.catnum })
+            settingsRepo.setSatelliteTypeIds(customSourceType, entries.map { it.catnum })
         }
         setUpdateSuccessful(System.currentTimeMillis())
     }
 
     override suspend fun updateTransceiversFromFile(uri: String) = withContext(dispatcher) {
-        remoteSource.getFileStream(uri)
-            ?.let { dataParser.parseJSONStream(it) }
-            ?.takeIf { it.isNotEmpty() }
-            ?.let {
-                localSource.deleteRadios()
-                localSource.insertRadios(it)
-            }
+        remoteSource.getFileStream(uri)?.let { stream ->
+            val transceivers = dataParser.parseJSONStream(unwrapIfZipped(uri, stream))
+            localSource.insertRadios(transceivers)
+        }
         setUpdateSuccessful(System.currentTimeMillis())
     }
 
@@ -69,28 +63,26 @@ class DatabaseRepo(
         val dataSourcesSettings = settingsRepo.dataSourcesSettings.value
         val tleUrls = buildMap {
             putAll(Sources.satelliteDataUrls)
-            if (dataSourcesSettings.useCustomTLE) put("Other", dataSourcesSettings.tleUrl)
-        }.filterValues { it.isNotEmpty() }
-
-        val radioUrls = buildList {
-            add(Sources.RADIO_DATA_URL)
-            if (dataSourcesSettings.useCustomTransceivers) add(dataSourcesSettings.transceiversUrl)
-        }
-
+            if (dataSourcesSettings.useCustomTLE) put(customSourceType, dataSourcesSettings.tleUrl)
+        }.filterValues { it.isNotBlank() }
+        val radioUrls = buildMap {
+            putAll(Sources.transceiversDataUrls)
+            if (dataSourcesSettings.useCustomTransceivers) put(customSourceType, dataSourcesSettings.transceiversUrl)
+        }.filterValues { it.isNotBlank() }
         // launch all network requests concurrently
-        val tleJobs = tleUrls.map { (type, url) -> async { type to remoteSource.getNetworkStream(url) } }
-        val radioJobs = radioUrls.map { url -> async { remoteSource.getNetworkStream(url) } }
-
-        // parse satellite data
-        val importedEntries = tleJobs.awaitAll().flatMap { (type, stream) ->
-            stream?.let { parseSatelliteStream(type, it) }.orEmpty().also { satellites ->
-                settingsRepo.setSatelliteTypeIds(type, satellites.map { it.catnum })
+        val tleJobs = tleUrls.values.map { url -> async { url to remoteSource.getNetworkStream(url) } }
+        val radioJobs = radioUrls.values.map { url -> async { url to remoteSource.getNetworkStream(url) } }
+        // parse fetched data concurrently and associate with types
+        val importedEntries = tleJobs.awaitAll().flatMap { (url, stream) ->
+            val type = tleUrls.entries.find { it.value == url }?.key ?: customSourceType
+            stream?.let { parseSatelliteStream(url, unwrapIfZipped(url, it)) }.orEmpty().also { entries ->
+                settingsRepo.setSatelliteTypeIds(type, entries.map { it.catnum })
             }
         }
-
-        // parse radio data
-        val importedRadios = radioJobs.awaitAll().filterNotNull().flatMap { dataParser.parseJSONStream(it) }
-
+        val importedRadios = radioJobs.awaitAll().flatMap { (url, stream) ->
+            stream?.let { dataParser.parseJSONStream(unwrapIfZipped(url, it)) }.orEmpty()
+        }
+        // insert parsed data into the database
         localSource.insertEntries(importedEntries)
         localSource.insertRadios(importedRadios)
         setUpdateSuccessful(System.currentTimeMillis())
@@ -102,10 +94,9 @@ class DatabaseRepo(
         setUpdateSuccessful(0L)
     }
 
-    private suspend fun parseSatelliteStream(type: String, stream: InputStream): List<OrbitalData> = when (type) {
-        in tleTypes -> dataParser.parseTLEStream(stream)
-        in zippedTleTypes -> dataParser.parseTLEStream(ZipInputStream(stream).apply { nextEntry })
-        else -> dataParser.parseCSVStream(stream)
+    private suspend fun parseSatelliteStream(url: String, stream: InputStream): List<OrbitalData> = when {
+        url.contains("FORMAT=csv", ignoreCase = true) -> dataParser.parseCSVStream(stream)
+        else -> dataParser.parseTLEStream(stream)
     }
 
     private suspend fun setUpdateSuccessful(timestamp: Long) {
@@ -113,4 +104,7 @@ class DatabaseRepo(
             DatabaseState(localSource.getRadiosTotal(), localSource.getEntriesTotal(), timestamp)
         )
     }
+
+    private fun unwrapIfZipped(url: String, stream: InputStream): InputStream =
+        if (url.endsWith(".zip", ignoreCase = true)) ZipInputStream(stream).apply { nextEntry } else stream
 }

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/SatelliteRepo.kt

@@ -52,6 +52,13 @@ class SatelliteRepo(
     private val _satellites = MutableStateFlow<List<OrbitalObject>>(emptyList())
     override val satellites: StateFlow<List<OrbitalObject>> = _satellites
 
+    private val _selectedPass = MutableStateFlow(0 to 0L)
+    override val selectedPass: StateFlow<Pair<Int, Long>> = _selectedPass
+
+    override fun selectPass(catNum: Int, aosTime: Long) {
+        _selectedPass.value = catNum to aosTime
+    }
+
     override suspend fun getRadiosWithId(id: Int) = localStorage.getRadiosWithId(id)
 
     override suspend fun initRepository() = withContext(dispatcher) {

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/predict/CelestialComputer.kt

@@ -242,7 +242,8 @@ object CelestialComputer {
         t = (jd - 2451545.0) / 36525.0
         var teg = 280.46061837 + 360.98564736629 * (jd - 2451545.0) + (0.000387933 * t - t * t / 38710000.0) * t
         while (teg > 360.0) teg -= 360.0
-        val th = fixAngle((teg - observer.longitude) * DEG2RAD)
+        // LST = GMST + east longitude (positive east convention)
+        val th = mod2PI((teg + observer.longitude) * DEG2RAD)
         val h = th - ra
         val azVal = atan2(sin(h), cos(h) * sin(n) - tan(dec) * cos(n)) + PI
         val el = asin(sin(n) * sin(dec) + cos(n) * cos(dec) * cos(h))
@@ -563,9 +564,9 @@ object CelestialComputer {
     // ── Internal helpers ──
 
     private fun observerGeodetic(pos: GeoPos): DoubleArray {
-        // [lat_rad, lon_rad, alt_km]  — longitude negated so that
-        // mod2PI(thetaGJD + obsGeo[1]) == mod2PI(thetaGJD + lon_rad)
-        return doubleArrayOf(pos.latitude * DEG2RAD, -pos.longitude * DEG2RAD, pos.altitude / 1000.0)
+        // [lat_rad, lon_rad, alt_km] — longitude positive east, matching OrbitalObject convention.
+        // LST = thetaGJD(julUtc) + obsGeo[1] = GMST + lon_rad (correct).
+        return doubleArrayOf(pos.latitude * DEG2RAD, pos.longitude * DEG2RAD, pos.altitude / 1000.0)
     }
 
     /**

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/ISatelliteRepo.kt

@@ -34,6 +34,12 @@ interface ISatelliteRepo {
     /** Whether the repo is currently calculating passes. */
     val isCalculating: StateFlow<Boolean>
 
+    /** Currently selected pass (catNum + aosTime), persisted across screen navigations. */
+    val selectedPass: StateFlow<Pair<Int, Long>>
+
+    /** Set the currently selected pass. */
+    fun selectPass(catNum: Int, aosTime: Long)
+
     /** Load satellite objects from DB based on the current selection. */
     suspend fun initRepository()
 

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/source/Sources.kt

@@ -18,7 +18,6 @@
 package com.rtbishop.look4sat.core.domain.source
 
 object Sources {
-    const val RADIO_DATA_URL = "https://db.satnogs.org/api/transmitters/?format=json&status=active"
     val satelliteDataUrls = mapOf(
         "All" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=active&FORMAT=csv",
         "Amateur" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=amateur&FORMAT=csv",
@@ -49,4 +48,7 @@ object Sources {
         "R4UAB" to "https://r4uab.ru/satonline.txt",
         "Other" to "" // key for sats filter
     )
+    val transceiversDataUrls = mapOf(
+        "SatNOGS" to "https://db.satnogs.org/api/transmitters/?format=json&status=active"
+    )
 }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/utility/DataParser.kt

@@ -58,8 +58,6 @@ class DataParser(private val dispatcher: CoroutineDispatcher) {
         }.getOrDefault(emptyList())
     }
 
-    fun isLeapYear(year: Int): Boolean = (year % 4 == 0 && year % 100 != 0) || year % 400 == 0
-
     private fun parseCSV(values: List<String>): OrbitalData? = runCatching {
         val name = values[0]
         val timestamp = values[2]
@@ -106,7 +104,8 @@ class DataParser(private val dispatcher: CoroutineDispatcher) {
     }.onFailure { println("TLE parsing exception: $it") }.getOrNull()
 
     private fun getDayOfYear(year: Int, month: Int, dayOfMonth: Int): Int {
-        val daysInMonth = intArrayOf(31, if (isLeapYear(year)) 29 else 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31)
+        val isLeapYear = (year % 4 == 0 && year % 100 != 0) || year % 400 == 0
+        val daysInMonth = intArrayOf(31, if (isLeapYear) 29 else 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31)
         return daysInMonth.take(month - 1).sum() + dayOfMonth
     }
 }

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/DataParserTest.kt

@@ -95,11 +95,11 @@ class DataParserTest {
         assert(dataParser.parseCSVStream(validCSVStream) == dataParser.parseTLEStream(validTLEStream))
     }
 
-    @Test
-    fun `Function isLeapYear returns correct data`() = runTest(testDispatcher) {
-        val years = listOf(1900, 1984, 1994, 2016, 2022, 2024, 2042, 2048)
-        val answers = listOf(false, true, false, true, false, true, false, true)
-        val results = years.map { dataParser.isLeapYear(it) }
-        assert(results == answers)
-    }
+//    @Test
+//    fun `Function isLeapYear returns correct data`() = runTest(testDispatcher) {
+//        val years = listOf(1900, 1984, 1994, 2016, 2022, 2024, 2042, 2048)
+//        val answers = listOf(false, true, false, true, false, true, false, true)
+//        val results = years.map { dataParser.isLeapYear(it) }
+//        assert(results == answers)
+//    }
 }

core/presentation/src/main/java/com/rtbishop/look4sat/core/presentation/Components.kt

@@ -178,12 +178,6 @@ fun RowScope.NextPassRow(pass: OrbitalPass, modifier: Modifier = Modifier, isUtc
                     horizontalArrangement = Arrangement.Center,
                     verticalAlignment = Alignment.CenterVertically
                 ) {
-                    Icon(
-                        painter = painterResource(R.drawable.ic_altitude),
-                        contentDescription = null,
-                        modifier = Modifier.size(16.dp)
-                    )
-                    Spacer(modifier = Modifier.width(4.dp))
                     Text(text = "${pass.altitude} km", fontSize = 15.sp)
                 }
                 Text(

core/presentation/src/main/java/com/rtbishop/look4sat/core/presentation/Navigation.kt

@@ -30,10 +30,10 @@ sealed class Screen(val iconResId: Int, val titleResId: Int) : NavKey {
     data object Passes : Screen(R.drawable.ic_passes, R.string.nav_pass)
 
     @Serializable
-    data class Radar(val catNum: Int = 0, val aosTime: Long = 0L) : Screen(R.drawable.ic_radar, R.string.nav_radar)
+    data object Radar : Screen(R.drawable.ic_radar, R.string.nav_radar)
 
     @Serializable
-    data class RadioControl(val catNum: Int = 0, val aosTime: Long = 0L) : Screen(0, 0)
+    data object RadioControl : Screen(0, 0)
 
     @Serializable
     data object Map : Screen(R.drawable.ic_map, R.string.nav_map)

core/presentation/src/main/java/com/rtbishop/look4sat/core/presentation/SwipeableItem.kt

@@ -0,0 +1,105 @@
+package com.rtbishop.look4sat.core.presentation
+
+import androidx.compose.animation.core.animateDpAsState
+import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.foundation.border
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.size
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.SwipeToDismissBox
+import androidx.compose.material3.SwipeToDismissBoxValue
+import androidx.compose.material3.rememberSwipeToDismissBoxState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.dropShadow
+import androidx.compose.ui.draw.innerShadow
+import androidx.compose.ui.draw.rotate
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.RectangleShape
+import androidx.compose.ui.graphics.graphicsLayer
+import androidx.compose.ui.hapticfeedback.HapticFeedbackType
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.platform.LocalHapticFeedback
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.unit.dp
+import kotlinx.coroutines.launch
+
+@Composable
+fun SwipeableItem(onSwipeRight: () -> Unit, onSwipeLeft: () -> Unit, content: @Composable () -> Unit) {
+    val coroutineScope = rememberCoroutineScope()
+    val dismissThresholdPx = with(LocalDensity.current) { 120.dp.toPx() }
+    val dismissState = rememberSwipeToDismissBoxState { dismissThresholdPx }
+    val willTrigger by remember { derivedStateOf { dismissState.targetValue != SwipeToDismissBoxValue.Settled } }
+    val hapticFeedback = LocalHapticFeedback.current
+    LaunchedEffect(willTrigger) {
+        val feedbackType = if (willTrigger) HapticFeedbackType.LongPress else HapticFeedbackType.SegmentTick
+        if (willTrigger) hapticFeedback.performHapticFeedback(feedbackType)
+    }
+    SwipeToDismissBox(
+        state = dismissState,
+        enableDismissFromStartToEnd = true,
+        enableDismissFromEndToStart = true,
+        backgroundContent = {
+            val isSwipeRight = dismissState.dismissDirection == SwipeToDismissBoxValue.StartToEnd
+            SwipeBackground(isSwipeRight, willTrigger, MaterialTheme.colorScheme.primary)
+        },
+        content = { content() },
+        onDismiss = {
+            val targetValue = dismissState.targetValue
+            when (targetValue) {
+                SwipeToDismissBoxValue.StartToEnd -> onSwipeRight()
+                SwipeToDismissBoxValue.EndToStart -> onSwipeLeft()
+                SwipeToDismissBoxValue.Settled -> {}
+            }
+            if (targetValue != SwipeToDismissBoxValue.Settled) {
+                coroutineScope.launch { dismissState.snapTo(SwipeToDismissBoxValue.Settled) }
+            }
+        }
+    )
+}
+
+@Composable
+fun SwipeBackground(isSwipeRight: Boolean, willTrigger: Boolean, bgColor: Color = Color(0x00000000)) {
+    val shape = RectangleShape
+    Box(
+        contentAlignment = if (isSwipeRight) Alignment.CenterStart else Alignment.CenterEnd,
+        modifier = Modifier
+            .fillMaxSize()
+            .border(width = 1.dp, shape = shape, color = bgColor)
+            .dropShadow(shape = shape) {
+                color = bgColor
+                radius = 40f
+                alpha = if (willTrigger) .2f else 0f
+            }
+            .innerShadow(shape = shape) {
+                color = bgColor
+                radius = 40f
+                alpha = if (willTrigger) 1f else .2f
+            }
+    ) {
+        val iconScale by animateFloatAsState(targetValue = if (willTrigger) 1f else .8f)
+        val slide by animateDpAsState(targetValue = if (willTrigger) 32.dp else (12).dp)
+        Icon(
+            painter = painterResource(R.drawable.ic_filter),
+            contentDescription = null,
+            modifier = Modifier
+                .size(32.dp)
+                .fillMaxHeight()
+                .rotate(if (isSwipeRight) 0f else 180f)
+                .graphicsLayer {
+                    scaleX = iconScale
+                    scaleY = iconScale
+                    translationX = slide.toPx()
+                }
+        )
+    }
+}

core/presentation/src/main/res/drawable/ic_altitude.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24">
-    <path
-        android:fillColor="@android:color/white"
-        android:pathData="M4,20h16v2L4,22zM4,2h16v2L4,4zM13,9h3l-4,-4 -4,4h3v6L8,15l4,4 4,-4h-3z" />
-</vector>

core/presentation/src/main/res/values-zh/strings.xml

@@ -130,8 +130,16 @@
     <string name="prefs_other_switch_update">启用卫星数据自动更新</string>
     <string name="prefs_other_switch_sweep">启用雷达扫描动画</string>
     <string name="prefs_other_switch_sensors">使用传感器旋转雷达视图</string>
+    <string name="prefs_other_switch_night_mode">启用红色夜间模式</string>
 
     <string name="prefs_outro_title">我要感谢：</string>
+    <string name="prefs_outro_thanks" translatable="false">
+        • Look4Sat 所有用户及贡献者!
+        \n• David A. B. Johnson (predict4java)
+        \n• Dave Moten (predict4java)
+        \n• Alexandru Csete (Gpredict)
+        \n• Dr T.S. Kelso (Celestrak)
+        \n• Libre Space Foundation (SatNOGS)</string>
     <string name="prefs_outro_license">该应用程序不提供任何保修.</string>
 
 </resources>

core/presentation/src/main/res/values/strings.xml

@@ -49,12 +49,9 @@
         \n\nPlease update the database at least weekly to get accurate predictions.</string>
     <string name="pass_whatsnew_title" translatable="false">What\'s new in Look4Sat</string>
     <string name="pass_whatsnew_message" translatable="false">
-        * Added fixes for Turkish translation, by Emre Can Akdaş (TA3ECR)
-        \n* Added passes sticky header with sunrise/sunset times
-        \n* Added current moon/sun positions to the Radar Screen
-        \n* Added current moon/sun positions to the Map Screen
-        \n* Added red night mode filter overlay for the whole app
-
+        * Implemented Swipe-to-Focus behavior for passes - swipe right on a pass to focus it, and left - to unfocus
+        \n\n* Implemented preserving the pass selection between the Radar and Map screens. Not every satellite has
+        a pass overhead every day, so this should make it only slightly easier to keep track of certain satellites.
     </string>
 
     <!-- Radar screen -->

fastlane/metadata/android/en-US/changelogs/default.txt

@@ -1,5 +1,2 @@
-* Added fixes for Turkish translation, by Emre Can Akdaş (TA3ECR)
-* Added passes sticky header with sunrise/sunset times
-* Added current moon/sun positions to the Radar Screen
-* Added current moon/sun positions to the Map Screen
-* Added red night mode filter overlay for the whole app
+* Implemented Swipe-to-Focus behavior for passes - swipe right on a pass to focus it, and left - to unfocus
+* Implemented preserving the pass selection between the Radar and Map screens. Not every satellite has a pass overhead every day, so this should make it only slightly easier to keep track of certain satellites.

fastlane/metadata/android/en-US/whatsnew/whatsnew-en-US

@@ -1,5 +0,0 @@
-* Added fixes for Turkish translation, by Emre Can Akdaş (TA3ECR)
-* Added passes sticky header with sunrise/sunset times
-* Added current moon/sun positions to the Radar Screen
-* Added current moon/sun positions to the Map Screen
-* Added red night mode filter overlay for the whole app

feature/map/src/main/java/com/rtbishop/look4sat/feature/map/MapScreen.kt

@@ -123,10 +123,7 @@ private val moonIconPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
 fun MapDestination() {
     val context = LocalContext.current
     val container = (context.applicationContext as IContainerProvider).getMainContainer()
-    val viewModel = viewModel(
-        modelClass = MapViewModel::class.java,
-        factory = MapViewModel.factory(container)
-    )
+    val viewModel: MapViewModel = viewModel(factory = MapViewModel.factory(container))
     val uiState by viewModel.uiState.collectAsStateWithLifecycle()
     val mapView = rememberMapViewWithLifecycle()
     MapScreen(uiState, viewModel::onAction, mapView)

feature/map/src/main/java/com/rtbishop/look4sat/feature/map/MapViewModel.kt

@@ -76,7 +76,8 @@ class MapViewModel(
                 _uiState.update { it.copy(isUtc = settings.stateOfUtc) }
             }
         }
-        selectDefaultSatellite(-1)
+        val (selectedCatNum, _) = satelliteRepo.selectedPass.value
+        selectDefaultSatellite(if (selectedCatNum != 0) selectedCatNum else -1)
     }
 
     fun onAction(action: MapAction) {
@@ -126,10 +127,16 @@ class MapViewModel(
                 val dateNow = Date()
                 getStationPosition()
                 getSatTrack(orbitalObject, stationPos, dateNow)
+                // Scale update interval based on satellite count to avoid excessive CPU usage
+                val effectiveRate = when {
+                    allSatellites.size > 5000 -> maxOf(updateFreq, 3000L)
+                    allSatellites.size > 1000 -> maxOf(updateFreq, 2000L)
+                    else -> updateFreq
+                }
                 while (isActive) {
                     dateNow.time = System.currentTimeMillis()
                     updateMapState(orbitalObject, allSatellites, stationPos, dateNow)
-                    delay(updateFreq)
+                    delay(effectiveRate)
                 }
             }
         }

feature/passes/src/main/java/com/rtbishop/look4sat/feature/passes/PassesScreen.kt

@@ -17,6 +17,11 @@
  */
 package com.rtbishop.look4sat.feature.passes
 
+import androidx.compose.animation.AnimatedContent
+import androidx.compose.animation.core.tween
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.fadeOut
+import androidx.compose.animation.togetherWith
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
@@ -29,11 +34,8 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.lazy.grid.GridCells
-import androidx.compose.foundation.lazy.grid.GridItemSpan
-import androidx.compose.foundation.lazy.grid.LazyGridState
 import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
 import androidx.compose.foundation.lazy.grid.items
-import androidx.compose.foundation.lazy.grid.rememberLazyGridState
 import androidx.compose.material3.ElevatedCard
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.HorizontalDivider
@@ -45,8 +47,6 @@ import androidx.compose.material3.pulltorefresh.PullToRefreshBox
 import androidx.compose.material3.pulltorefresh.PullToRefreshDefaults
 import androidx.compose.material3.pulltorefresh.rememberPullToRefreshState
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.derivedStateOf
-import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -72,6 +72,7 @@ import com.rtbishop.look4sat.core.presentation.MainTheme
 import com.rtbishop.look4sat.core.presentation.NextPassRow
 import com.rtbishop.look4sat.core.presentation.R
 import com.rtbishop.look4sat.core.presentation.ScreenColumn
+import com.rtbishop.look4sat.core.presentation.SwipeableItem
 import com.rtbishop.look4sat.core.presentation.TimerRow
 import com.rtbishop.look4sat.core.presentation.TopBar
 import com.rtbishop.look4sat.core.presentation.infiniteMarquee
@@ -85,10 +86,7 @@ import java.util.TimeZone
 fun PassesDestination(navigateToRadar: (Int, Long) -> Unit) {
     val context = LocalContext.current
     val container = (context.applicationContext as IContainerProvider).getMainContainer()
-    val viewModel = viewModel(
-        modelClass = PassesViewModel::class.java,
-        factory = PassesViewModel.factory(container)
-    )
+    val viewModel: PassesViewModel = viewModel(factory = PassesViewModel.factory(container))
     val uiState = viewModel.uiState.collectAsStateWithLifecycle().value
     PassesScreen(uiState, viewModel::onAction, navigateToRadar)
 }
@@ -125,7 +123,6 @@ private fun PassesScreen(
             onAction(PassesAction.DismissWhatsNew)
         }
     }
-    val gridState = rememberLazyGridState()
     ScreenColumn(
         topBar = { isVerticalLayout ->
             TopBar(
@@ -149,10 +146,11 @@ private fun PassesScreen(
             isRefreshing = uiState.isRefreshing,
             isUtc = uiState.isUtc,
             passes = uiState.itemsList,
+            groupedPasses = uiState.groupedPasses,
+            sunTimes = uiState.sunTimes,
+            focusedCatNum = uiState.focusedCatNum,
             navigateToRadar = navigateToRadar,
-            refreshPasses = { onAction(PassesAction.RefreshPasses) },
-            gridState = gridState,
-            sunTimes = uiState.sunTimes
+            onAction = onAction
         )
     }
 }
@@ -163,50 +161,19 @@ private fun PassesList(
     isRefreshing: Boolean,
     isUtc: Boolean,
     passes: List<OrbitalPass>,
+    groupedPasses: Map<String, List<OrbitalPass>>,
+    sunTimes: Map<String, Pair<String, String>>,
+    focusedCatNum: Int?,
     navigateToRadar: (Int, Long) -> Unit,
-    refreshPasses: () -> Unit,
-    gridState: LazyGridState,
-    sunTimes: Map<String, Pair<String, String>>
+    onAction: (PassesAction) -> Unit
 ) {
     val isVerticalLayout = isVerticalLayout()
     val refreshState = rememberPullToRefreshState()
-    val timeZone = remember(isUtc) { if (isUtc) TimeZone.getTimeZone("UTC") else TimeZone.getDefault() }
-    val sdfDate = remember(isUtc) {
-        SimpleDateFormat("EEE, dd MMM yyyy", Locale.ENGLISH).also { it.timeZone = timeZone }
-    }
-
-    // Group passes by calendar day so we know where headers go
-    val groupedPasses = remember(passes, isUtc) {
-        passes.filter { !it.isDeepSpace }.groupBy { sdfDate.format(Date(it.aosTime)) } +
-            if (passes.any { it.isDeepSpace }) mapOf("Deep Space" to passes.filter { it.isDeepSpace }) else emptyMap()
-    }
-
-    // Derive the sticky header label from the first visible item index
-    val stickyHeader by remember(gridState, groupedPasses) {
-        derivedStateOf {
-            val firstVisible = gridState.firstVisibleItemIndex
-            var itemIndex = 0
-            var header = groupedPasses.keys.firstOrNull() ?: ""
-            for ((key, items) in groupedPasses) {
-                header = key
-                itemIndex += 1 + items.size
-                if (itemIndex > firstVisible) break
-            }
-            header
-        }
-    }
-
-    // The sticky overlay should only show when the first in-list header has scrolled out of view.
-    // firstVisibleItemIndex == 0 means the first header is still visible — hide the overlay.
-    val showStickyOverlay by remember(gridState) {
-        derivedStateOf { gridState.firstVisibleItemIndex > 0 || gridState.firstVisibleItemScrollOffset > 0 }
-    }
-
     ElevatedCard(modifier = Modifier.fillMaxSize()) {
         PullToRefreshBox(
             isRefreshing = isRefreshing,
             state = refreshState,
-            onRefresh = refreshPasses,
+            onRefresh = { onAction(PassesAction.RefreshPasses) },
             indicator = {
                 PullToRefreshDefaults.Indicator(
                     state = refreshState,
@@ -220,31 +187,35 @@ private fun PassesList(
             if (passes.isEmpty()) {
                 EmptyListCard(message = stringResource(R.string.pass_empty_list_message))
             } else {
-                Column {
-                    // Sticky header overlay — only visible once the in-list header scrolls away
-                    if (showStickyOverlay) {
-                        val (rise, set) = sunTimes[stickyHeader] ?: ("--:--" to "--:--")
-                        StickyDateHeader(label = stickyHeader, sunriseTime = rise, sunsetTime = set)
-                    }
-                    LazyVerticalGrid(
-                        state = gridState,
-                        columns = GridCells.Adaptive(320.dp),
-                        modifier = Modifier.fillMaxSize()
-                    ) {
+                AnimatedContent(
+                    targetState = focusedCatNum,
+                    transitionSpec = { fadeIn(tween(200)) togetherWith fadeOut(tween(200)) },
+                    label = "PassesFocusTransition"
+                ) { targetFocus ->
+                    LazyVerticalGrid(columns = GridCells.Adaptive(320.dp), modifier = Modifier.fillMaxSize()) {
                         for ((dateLabel, dayPasses) in groupedPasses) {
-                            // In-list section header (scrolls away, drives the sticky overlay)
-                            item(span = { GridItemSpan(maxLineSpan) }) {
-                                val (rise, set) = sunTimes[dateLabel] ?: ("--:--" to "--:--")
-                                StickyDateHeader(label = dateLabel, sunriseTime = rise, sunsetTime = set)
+                            val headerVisible = targetFocus == null || dayPasses.any { it.catNum == targetFocus }
+                            if (headerVisible) {
+                                stickyHeader(key = "header_$dateLabel") {
+                                    val (rise, set) = sunTimes[dateLabel] ?: ("--:--" to "--:--")
+                                    StickyDateHeader(label = dateLabel, sunriseTime = rise, sunsetTime = set)
+                                }
                             }
-                            items(items = dayPasses, key = { item -> item.catNum + item.aosTime }) { pass ->
-                                PassItem(
-                                    pass = pass,
-                                    navigateToRadar = navigateToRadar,
-                                    modifier = Modifier.animateItem(),
-                                    isVerticalLayout = isVerticalLayout,
-                                    isUtc = isUtc
-                                )
+                            val visiblePasses = if (targetFocus == null) dayPasses
+                            else dayPasses.filter { it.catNum == targetFocus }
+                            items(items = visiblePasses, key = { item -> item.catNum + item.aosTime }) { pass ->
+                                SwipeableItem(
+                                    onSwipeRight = { onAction(PassesAction.FocusCatNum(pass.catNum)) },
+                                    onSwipeLeft = { onAction(PassesAction.ClearFocus) }
+                                ) {
+                                    PassItem(
+                                        pass = pass,
+                                        navigateToRadar = navigateToRadar,
+                                        modifier = Modifier.animateItem(),
+                                        isVerticalLayout = isVerticalLayout,
+                                        isUtc = isUtc
+                                    )
+                                }
                             }
                         }
                     }
@@ -397,13 +368,6 @@ private fun PassItem(
                     horizontalArrangement = Arrangement.Center,
                     verticalAlignment = Alignment.CenterVertically
                 ) {
-                    Icon(
-                        painter = painterResource(id = R.drawable.ic_altitude),
-                        contentDescription = null,
-                        modifier = Modifier.size(16.dp),
-                        tint = MaterialTheme.colorScheme.onSurface
-                    )
-                    Spacer(modifier = Modifier.width(4.dp))
                     Text(text = "${pass.altitude} km", fontSize = 15.sp, color = MaterialTheme.colorScheme.onSurface)
                 }
                 Row(

feature/passes/src/main/java/com/rtbishop/look4sat/feature/passes/PassesState.kt

@@ -32,9 +32,10 @@ data class PassesState(
     val showDeepSpace: Boolean = true,
     val modes: List<String> = emptyList(),
     val itemsList: List<OrbitalPass> = emptyList(),
+    val groupedPasses: Map<String, List<OrbitalPass>> = emptyMap(),
     val shouldSeeWhatsNew: Boolean = false,
-    // Map of dateLabel -> Pair(sunriseTime, sunsetTime) for each day group
-    val sunTimes: Map<String, Pair<String, String>> = emptyMap()
+    val sunTimes: Map<String, Pair<String, String>> = emptyMap(),
+    val focusedCatNum: Int? = null
 )
 
 sealed interface PassesAction {
@@ -44,4 +45,6 @@ sealed interface PassesAction {
     data object RefreshPasses : PassesAction
     data object TogglePassesDialog : PassesAction
     data object ToggleRadiosDialog : PassesAction
+    data class FocusCatNum(val catNum: Int) : PassesAction
+    data object ClearFocus : PassesAction
 }

feature/passes/src/main/java/com/rtbishop/look4sat/feature/passes/PassesViewModel.kt

@@ -74,37 +74,31 @@ class PassesViewModel(
                 _uiState.update { it.copy(isUtc = settings.stateOfUtc, shouldSeeWhatsNew = settings.shouldSeeWhatsNew) }
             }
         }
-        // Local tick loop — computes pass progress, countdown timer, and per-day sun times every second
+        // Main tick loop: reacts to new passes, then ticks every second
         viewModelScope.launch {
-            var lastSunTimesKey = "" // track when we need to recompute sun times
-            while (isActive) {
-                val timeNow = System.currentTimeMillis()
-                val isUtc = _uiState.value.isUtc
-                val showDeepSpace = _uiState.value.showDeepSpace
-                val allPasses = satelliteRepo.passes.value
-                val filtered = if (showDeepSpace) allPasses else allPasses.filter { !it.isDeepSpace }
-                val processed = computePassProgress(filtered, timeNow)
-                val (nextPass, nextTime, isAos) = resolveNextPass(processed, timeNow)
-
-                // Recompute per-day sun times only when passes list or UTC setting changes
-                val sunTimesKey = "${processed.firstOrNull()?.aosTime}-${processed.lastOrNull()?.aosTime}-$isUtc"
-                val sunTimes = if (sunTimesKey != lastSunTimesKey) {
-                    lastSunTimesKey = sunTimesKey
-                    computeSunTimes(processed, isUtc)
-                } else {
-                    _uiState.value.sunTimes
+            satelliteRepo.passes.collectLatest { allPasses ->
+                while (isActive) {
+                    val timeNow = System.currentTimeMillis()
+                    val isUtc = _uiState.value.isUtc
+                    val showDeepSpace = _uiState.value.showDeepSpace
+                    val filtered = allPasses
+                        .let { if (showDeepSpace) it else it.filter { pass -> !pass.isDeepSpace } }
+                    val processed = computePassProgress(filtered, timeNow)
+                    val (nextPass, nextTime, isAos) = resolveNextPass(processed, timeNow)
+                    val sunTimes = computeSunTimes(processed, isUtc)
+                    val grouped = groupPasses(processed, isUtc)
+                    _uiState.update {
+                        it.copy(
+                            itemsList = processed,
+                            groupedPasses = grouped,
+                            sunTimes = sunTimes,
+                            nextPass = nextPass,
+                            nextTime = nextTime,
+                            isNextTimeAos = isAos
+                        )
+                    }
+                    delay(1000)
                 }
-
-                _uiState.update {
-                    it.copy(
-                        itemsList = processed,
-                        nextPass = nextPass,
-                        nextTime = nextTime,
-                        isNextTimeAos = isAos,
-                        sunTimes = sunTimes
-                    )
-                }
-                delay(1000)
             }
         }
     }
@@ -121,16 +115,25 @@ class PassesViewModel(
                 _uiState.update { it.copy(isPassesDialogShown = !it.isPassesDialogShown) }
             PassesAction.ToggleRadiosDialog ->
                 _uiState.update { it.copy(isRadiosDialogShown = !it.isRadiosDialogShown) }
+            is PassesAction.FocusCatNum -> _uiState.update { it.copy(focusedCatNum = action.catNum) }
+            PassesAction.ClearFocus -> _uiState.update { it.copy(focusedCatNum = null) }
         }
     }
 
-    /** Computes sunrise/sunset strings for each unique calendar day in the pass list. */
+    // Computes sunrise/sunset strings for each unique calendar day in the pass list, plus today for DeepSpace
     private fun computeSunTimes(passes: List<OrbitalPass>, isUtc: Boolean): Map<String, Pair<String, String>> {
         val stationPos = settingsRepo.stationPosition.value
         val tz = if (isUtc) TimeZone.getTimeZone("UTC") else TimeZone.getDefault()
         val sdfDate = SimpleDateFormat("EEE, dd MMM yyyy", Locale.ENGLISH).also { it.timeZone = tz }
         val sdfTime = SimpleDateFormat("HH:mm", Locale.ENGLISH).also { it.timeZone = tz }
         val result = LinkedHashMap<String, Pair<String, String>>()
+        // DeepSpace group always shows today's sun times
+        if (passes.any { it.isDeepSpace }) {
+            val riseSet = CelestialComputer.findSunRiseSet(stationPos, System.currentTimeMillis())
+            val rise = if (riseSet.riseTimeMillis > 0) sdfTime.format(Date(riseSet.riseTimeMillis)) else "--:--"
+            val set = if (riseSet.setTimeMillis > 0) sdfTime.format(Date(riseSet.setTimeMillis)) else "--:--"
+            result["DeepSpace (period >225min)"] = rise to set
+        }
         for (pass in passes) {
             if (pass.isDeepSpace) continue
             val label = sdfDate.format(Date(pass.aosTime))
@@ -143,6 +146,18 @@ class PassesViewModel(
         return result
     }
 
+    private fun groupPasses(passes: List<OrbitalPass>, isUtc: Boolean): Map<String, List<OrbitalPass>> {
+        val tz = if (isUtc) TimeZone.getTimeZone("UTC") else TimeZone.getDefault()
+        val sdfDate = SimpleDateFormat("EEE, dd MMM yyyy", Locale.ENGLISH).also { it.timeZone = tz }
+        val ordered = LinkedHashMap<String, List<OrbitalPass>>()
+        val deepSpace = passes.filter { it.isDeepSpace }
+        if (deepSpace.isNotEmpty()) ordered["DeepSpace (period >225min)"] = deepSpace
+        passes.filter { !it.isDeepSpace }
+            .groupByTo(LinkedHashMap()) { sdfDate.format(Date(it.aosTime)) }
+            .forEach { (k, v) -> ordered[k] = v }
+        return ordered
+    }
+
     /** Computes live progress for each pass, filtering out expired ones. */
     private fun computePassProgress(passList: List<OrbitalPass>, time: Long): List<OrbitalPass> {
         val result = ArrayList<OrbitalPass>(passList.size)

feature/radar/src/main/java/com/rtbishop/look4sat/feature/radar/RadarScreen.kt

@@ -42,7 +42,6 @@ import androidx.compose.material3.Icon
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -77,42 +76,23 @@ import com.rtbishop.look4sat.core.presentation.isVerticalLayout
 import com.rtbishop.look4sat.core.presentation.layoutPadding
 
 @Composable
-fun RadarDestination(
-    catNum: Int = 0,
-    aosTime: Long = 0L,
-    navigateUp: () -> Unit,
-    navigateToRadioControl: (Int, Long) -> Unit = { _, _ -> }
-) {
+fun RadarDestination(navigateToRadioControl: () -> Unit = {}) {
     val context = LocalContext.current
     val container = (context.applicationContext as IContainerProvider).getMainContainer()
-    val viewModel = viewModel(
-        modelClass = RadarViewModel::class.java,
-        key = "$catNum-$aosTime",
-        factory = RadarViewModel.factory(catNum, aosTime, container)
-    )
+    val viewModel: RadarViewModel = viewModel(factory = RadarViewModel.factory(container))
     val uiState by viewModel.uiState.collectAsStateWithLifecycle()
-    RadarScreen(uiState, viewModel::onAction, navigateUp, navigateToRadioControl)
+    RadarScreen(uiState, viewModel::onAction, navigateToRadioControl)
 }
 
 @Composable
 private fun RadarScreen(
     uiState: RadarState,
     onAction: (RadarAction) -> Unit,
-    navigateUp: () -> Unit,
-    navigateToRadioControl: (Int, Long) -> Unit
+    navigateToRadioControl: () -> Unit
 ) {
     val upcomingPass = uiState.currentPass ?: getDefaultPass()
-    LaunchedEffect(uiState.isLos) { if (uiState.isLos) navigateUp() }
-
     val addToCalendar: () -> Unit = {
-        uiState.currentPass?.let { pass ->
-            onAction(RadarAction.AddToCalendar(pass.name, pass.aosTime, pass.losTime))
-        }
-    }
-    val openRadioControl: () -> Unit = {
-        uiState.currentPass?.let { pass ->
-            navigateToRadioControl(pass.catNum, pass.aosTime)
-        }
+        uiState.currentPass?.let { onAction(RadarAction.AddToCalendar(it.name, it.aosTime, it.losTime)) }
     }
     Column(
         modifier = Modifier
@@ -125,7 +105,7 @@ private fun RadarScreen(
             TopBar {
                 IconCard(action = addToCalendar, resId = R.drawable.ic_calendar)
                 TimerRow(timeString = uiState.currentTime, isTimeAos = uiState.isTimeAos)
-                IconCard(action = openRadioControl, resId = R.drawable.ic_radios)
+                IconCard(action = navigateToRadioControl, resId = R.drawable.ic_radios)
             }
             TopBar { NextPassRow(pass = upcomingPass, isUtc = uiState.isUtc) }
         } else {
@@ -133,7 +113,7 @@ private fun RadarScreen(
                 IconCard(action = addToCalendar, resId = R.drawable.ic_calendar)
                 TimerRow(timeString = uiState.currentTime, isTimeAos = uiState.isTimeAos)
                 NextPassRow(pass = upcomingPass, modifier = Modifier.weight(1f), isUtc = uiState.isUtc)
-                IconCard(action = openRadioControl, resId = R.drawable.ic_radios)
+                IconCard(action = navigateToRadioControl, resId = R.drawable.ic_radios)
             }
         }
         if (isVertical) {

feature/radar/src/main/java/com/rtbishop/look4sat/feature/radar/RadarViewModel.kt

@@ -43,8 +43,6 @@ import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
 
 class RadarViewModel(
-    private val catNum: Int,
-    private val aosTime: Long,
     private val bluetoothReporter: IReporter,
     private val networkReporter: IReporter,
     private val satelliteRepo: ISatelliteRepo,
@@ -85,26 +83,24 @@ class RadarViewModel(
         // Resolve which pass we're tracking and start the tick loop
         viewModelScope.launch {
             val passes = satelliteRepo.passes.value
-            val currentPass = passes.find { it.catNum == catNum && it.aosTime == aosTime }
-                ?: passes.firstOrNull()
-            currentPass?.let { satPass ->
-                _uiState.update { it.copy(currentPass = satPass) }
-                val transmitters = satelliteRepo.getRadiosWithId(satPass.catNum)
+            val (catNum, aosTime) = satelliteRepo.selectedPass.value
+            val satPass = passes.find { it.catNum == catNum && it.aosTime == aosTime } ?: passes.firstOrNull()
+            satPass?.let { pass ->
+                _uiState.update { it.copy(currentPass = pass) }
+                val transmitters = satelliteRepo.getRadiosWithId(pass.catNum)
                 // Compute track once (it doesn't change for a given pass)
-                if (!satPass.isDeepSpace) {
-                    val track = satelliteRepo.getTrack(
-                        satPass.orbitalObject, stationPos, satPass.aosTime, satPass.losTime
-                    )
+                if (!pass.isDeepSpace) {
+                    val track = satelliteRepo.getTrack(pass.orbitalObject, stationPos, pass.aosTime, pass.losTime)
                     _uiState.update { it.copy(satTrack = track) }
                 }
                 // Tick loop — position, timer, and radio updates every second
                 while (isActive) {
                     val timeNow = System.currentTimeMillis()
-                    val pos = satelliteRepo.getPosition(satPass.orbitalObject, stationPos, timeNow)
+                    val pos = satelliteRepo.getPosition(pass.orbitalObject, stationPos, timeNow)
                     val sunPos = CelestialComputer.getSunPosition(stationPos, timeNow)
                     val moonPos = CelestialComputer.getMoonPosition(stationPos, timeNow)
-                    val (time, isAos) = computeTimer(satPass.isDeepSpace, satPass.aosTime, satPass.losTime, timeNow)
-                    val isLos = !satPass.isDeepSpace && timeNow > satPass.losTime
+                    val (time, isAos) = computeTimer(pass.isDeepSpace, pass.aosTime, pass.losTime, timeNow)
+                    val isLos = !pass.isDeepSpace && timeNow > pass.losTime
                     _uiState.update {
                         it.copy(
                             currentTime = time,
@@ -115,7 +111,7 @@ class RadarViewModel(
                             moonPosition = moonPos
                         )
                     }
-                    processRadios(transmitters, satPass.orbitalObject, timeNow)
+                    processRadios(transmitters, pass.orbitalObject, timeNow)
                     sendPassData(pos)
                     delay(1000)
                 }
@@ -213,11 +209,9 @@ class RadarViewModel(
     }
 
     companion object {
-        fun factory(catNum: Int, aosTime: Long, container: IMainContainer) = viewModelFactory {
+        fun factory(container: IMainContainer) = viewModelFactory {
             initializer {
                 RadarViewModel(
-                    catNum = catNum,
-                    aosTime = aosTime,
                     bluetoothReporter = container.provideBluetoothReporter(),
                     networkReporter = container.provideNetworkReporter(),
                     satelliteRepo = container.satelliteRepo,

feature/radiocontrol/src/main/java/com/rtbishop/look4sat/feature/radiocontrol/RadioControlScreen.kt

@@ -66,14 +66,10 @@ import com.rtbishop.look4sat.core.presentation.layoutPadding
 import java.util.Locale
 
 @Composable
-fun RadioControlDestination(catNum: Int = 0, aosTime: Long = 0L, navigateUp: () -> Unit) {
+fun RadioControlDestination(navigateUp: () -> Unit) {
     val context = LocalContext.current
     val container = (context.applicationContext as IContainerProvider).getMainContainer()
-    val viewModel = viewModel(
-        modelClass = RadioControlViewModel::class.java,
-        key = "$catNum-$aosTime",
-        factory = RadioControlViewModel.factory(catNum, aosTime, container)
-    )
+    val viewModel: RadioControlViewModel = viewModel(factory = RadioControlViewModel.factory(container))
     val uiState by viewModel.uiState.collectAsStateWithLifecycle()
     RadioControlScreen(uiState, viewModel::onAction, navigateUp)
 }

feature/radiocontrol/src/main/java/com/rtbishop/look4sat/feature/radiocontrol/RadioControlViewModel.kt

@@ -38,8 +38,6 @@ import kotlinx.coroutines.launch
 import java.util.Locale
 
 class RadioControlViewModel(
-    private val catNum: Int,
-    private val aosTime: Long,
     private val trackingService: IRadioTrackingService,
     private val satelliteRepo: ISatelliteRepo,
     settingsRepo: ISettingsRepo
@@ -73,27 +71,23 @@ class RadioControlViewModel(
         // Resolve pass and load transponders
         viewModelScope.launch {
             val passes = satelliteRepo.passes.value
-            val pass = passes.find { it.catNum == catNum && it.aosTime == aosTime }
-                ?: passes.firstOrNull()
-            currentPass = pass
-            pass?.let { satPass ->
-                val allRadios = satelliteRepo.getRadiosWithId(satPass.catNum)
+            val (catNum, aosTime) = satelliteRepo.selectedPass.value
+            val satPass = passes.find { it.catNum == catNum && it.aosTime == aosTime } ?: passes.firstOrNull()
+            currentPass = satPass
+            satPass?.let { pass ->
+                val allRadios = satelliteRepo.getRadiosWithId(pass.catNum)
                 transponders = allRadios.filter { it.downlinkLow != null }
-                _uiState.update {
-                    it.copy(currentPass = satPass, transponders = transponders)
-                }
+                _uiState.update { it.copy(currentPass = pass, transponders = transponders) }
                 // If service is already tracking this pass, sync the selected transponder
                 val svcState = trackingService.state.value
-                if (svcState.isActive && svcState.currentPass?.catNum == satPass.catNum) {
-                    _uiState.update {
-                        it.copy(selectedTransponderUuid = svcState.selectedTransponder?.uuid)
-                    }
+                if (svcState.isActive && svcState.currentPass?.catNum == pass.catNum) {
+                    _uiState.update { it.copy(selectedTransponderUuid = svcState.selectedTransponder?.uuid) }
                 }
                 // Tick loop — timer and satellite position updates every second
                 while (isActive) {
                     val timeNow = System.currentTimeMillis()
-                    val pos = satelliteRepo.getPosition(satPass.orbitalObject, stationPos, timeNow)
-                    val (timeStr, isAos) = computeTimer(satPass.isDeepSpace, satPass.aosTime, satPass.losTime, timeNow)
+                    val pos = satelliteRepo.getPosition(pass.orbitalObject, stationPos, timeNow)
+                    val (timeStr, isAos) = computeTimer(pass.isDeepSpace, pass.aosTime, pass.losTime, timeNow)
                     _uiState.update { state ->
                         state.copy(
                             currentTime = timeStr,
@@ -187,11 +181,9 @@ class RadioControlViewModel(
             return String.format(Locale.ENGLISH, "%d.%03d.%03d", mhz, khz, hz)
         }
 
-        fun factory(catNum: Int, aosTime: Long, container: IMainContainer) = viewModelFactory {
+        fun factory(container: IMainContainer) = viewModelFactory {
             initializer {
                 RadioControlViewModel(
-                    catNum = catNum,
-                    aosTime = aosTime,
                     trackingService = container.radioTrackingService,
                     satelliteRepo = container.satelliteRepo,
                     settingsRepo = container.settingsRepo

feature/satellites/src/main/java/com/rtbishop/look4sat/feature/satellites/SatellitesScreen.kt

@@ -75,10 +75,7 @@ import com.rtbishop.look4sat.core.presentation.layoutPadding
 fun SatellitesDestination(navigateUp: () -> Unit) {
     val context = LocalContext.current
     val container = (context.applicationContext as IContainerProvider).getMainContainer()
-    val viewModel = viewModel(
-        modelClass = SatellitesViewModel::class.java,
-        factory = SatellitesViewModel.factory(container)
-    )
+    val viewModel: SatellitesViewModel = viewModel(factory = SatellitesViewModel.factory(container))
     val uiState = viewModel.uiState.collectAsStateWithLifecycle().value
     SatellitesScreen(uiState, viewModel::onAction, navigateUp)
 }

feature/settings/src/main/java/com/rtbishop/look4sat/feature/settings/SettingsScreen.kt

@@ -81,10 +81,7 @@ import java.util.Locale
 fun SettingsDestination() {
     val context = LocalContext.current
     val container = (context.applicationContext as IContainerProvider).getMainContainer()
-    val viewModel = viewModel(
-        modelClass = SettingsViewModel::class.java,
-        factory = SettingsViewModel.factory(container)
-    )
+    val viewModel: SettingsViewModel = viewModel(factory = SettingsViewModel.factory(container))
     val uiState by viewModel.uiState.collectAsStateWithLifecycle()
     SettingsScreen(uiState, viewModel::onAction)
 }
@@ -188,32 +185,63 @@ private fun SettingsScreen(uiState: SettingsState, onAction: (SettingsAction) ->
     val gitHubUrl = stringResource(R.string.prefs_github_url)
     val licenseUrl = stringResource(R.string.prefs_license_url)
     val privacyUrl = stringResource(R.string.prefs_privacy_url)
+    val safeOpenUri: (String) -> Unit = { url ->
+        try { uriHandler.openUri(url) } catch (_: Exception) {}
+    }
 
     ScreenColumn(
         topBar = { isVerticalLayout ->
             if (isVerticalLayout) {
                 TopBar {
-                    TopCard(onClick = { uriHandler.openUri(appUrl) }, version = uiState.appVersionName, modifier = Modifier.weight(1f))
-                    PrimaryIconCard(onClick = { uriHandler.openUri(donateUrl) }, resId = R.drawable.ic_pound)
+                    TopCard(
+                        onClick = { safeOpenUri(appUrl) },
+                        version = uiState.appVersionName,
+                        modifier = Modifier.weight(1f)
+                    )
+                    PrimaryIconCard(onClick = { safeOpenUri(donateUrl) }, resId = R.drawable.ic_pound)
                 }
                 TopBar {
                     Row(modifier = Modifier.weight(1f), horizontalArrangement = Arrangement.spacedBy(6.dp)) {
-                        BotCard(onClick = { uriHandler.openUri(fdroidUrl) }, R.drawable.ic_fdroid, fdroidTitle, modifier = Modifier.weight(1f))
-                        BotCard(onClick = { uriHandler.openUri(gitHubUrl) }, R.drawable.ic_github, gitHubTitle, modifier = Modifier.weight(1f))
+                        BotCard(
+                            onClick = { safeOpenUri(fdroidUrl) },
+                            resId = R.drawable.ic_fdroid,
+                            text = fdroidTitle,
+                            modifier = Modifier.weight(1f)
+                        )
+                        BotCard(
+                            onClick = { safeOpenUri(gitHubUrl) },
+                            resId = R.drawable.ic_github,
+                            text = gitHubTitle,
+                            modifier = Modifier.weight(1f)
+                        )
                     }
-                    IconCard(action = { uriHandler.openUri(licenseUrl) }, resId = R.drawable.ic_license)
-                    IconCard(action = { uriHandler.openUri(privacyUrl) }, resId = R.drawable.ic_policy)
+                    IconCard(action = { safeOpenUri(licenseUrl) }, resId = R.drawable.ic_license)
+                    IconCard(action = { safeOpenUri(privacyUrl) }, resId = R.drawable.ic_policy)
                 }
             } else {
                 TopBar {
-                    PrimaryIconCard(onClick = { uriHandler.openUri(donateUrl) }, resId = R.drawable.ic_pound)
-                    TopCard(onClick = { uriHandler.openUri(appUrl) }, version = uiState.appVersionName, modifier = Modifier.weight(1f))
+                    PrimaryIconCard(onClick = { safeOpenUri(donateUrl) }, resId = R.drawable.ic_pound)
+                    TopCard(
+                        onClick = { safeOpenUri(appUrl) },
+                        version = uiState.appVersionName,
+                        modifier = Modifier.weight(1f)
+                    )
                     Row(modifier = Modifier.weight(1f), horizontalArrangement = Arrangement.spacedBy(6.dp)) {
-                        BotCard(onClick = { uriHandler.openUri(fdroidUrl) }, R.drawable.ic_fdroid, fdroidTitle, modifier = Modifier.weight(1f))
-                        BotCard(onClick = { uriHandler.openUri(gitHubUrl) }, R.drawable.ic_github, gitHubTitle, modifier = Modifier.weight(1f))
+                        BotCard(
+                            onClick = { safeOpenUri(fdroidUrl) },
+                            resId = R.drawable.ic_fdroid,
+                            text = fdroidTitle,
+                            modifier = Modifier.weight(1f)
+                        )
+                        BotCard(
+                            onClick = { safeOpenUri(gitHubUrl) },
+                            resId = R.drawable.ic_github,
+                            text = gitHubTitle,
+                            modifier = Modifier.weight(1f)
+                        )
                     }
-                    IconCard(action = { uriHandler.openUri(licenseUrl) }, resId = R.drawable.ic_license)
-                    IconCard(action = { uriHandler.openUri(privacyUrl) }, resId = R.drawable.ic_policy)
+                    IconCard(action = { safeOpenUri(licenseUrl) }, resId = R.drawable.ic_license)
+                    IconCard(action = { safeOpenUri(privacyUrl) }, resId = R.drawable.ic_policy)
                 }
             }
         }

gradle/libs.versions.toml

@@ -1,8 +1,8 @@
 [versions]
 #noinspection UnusedVersionCatalogEntry
-appVersionCode = "430"
+appVersionCode = "432"
 #noinspection UnusedVersionCatalogEntry
-appVersionName = "4.3.0"
+appVersionName = "4.3.2"
 #noinspection GradleDependency,UnusedVersionCatalogEntry
 compileSdk = "36"
 #noinspection UnusedVersionCatalogEntry
@@ -12,21 +12,21 @@ jdkVersion = "17"
 #noinspection UnusedVersionCatalogEntry
 packageName = "com.rtbishop.look4sat"
 
-android-gradle-plugin = "9.2.0"
+android-gradle-plugin = "9.2.1"
 
 androidx-core-ktx = "1.18.0"
 androidx-core-splashscreen = "1.2.0"
 androidx-room = "2.8.4"
 
-compose-bom = "2026.04.01"
+compose-bom = "2026.05.01"
 compose-activity = "1.13.0"
 compose-lifecycle = "2.10.0"
-compose-navigation3 = "1.1.1"
+compose-navigation3 = "1.1.2"
 
-google-ksp = "2.3.6"
+google-ksp = "2.3.7"
 
 kotlin = "2.3.21"
-kotlin-coroutines = "1.10.2"
+kotlin-coroutines = "1.11.0"
 kotlin-serialization = "1.11.0"
 
 other-okhttp = "5.3.2"

gradle/wrapper/gradle-wrapper.properties

@@ -1,7 +1,7 @@
-#Tue Apr 28 15:46:23 BST 2026
+#Mon May 25 11:20:48 BST 2026
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.5.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.5.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME