Added SatPass class to get the full info of a pass for the recycler items. Still trying to figure out what the final app is going to look like. Sitting at home with a cold.

app/build.gradle

@@ -46,6 +46,7 @@ dependencies {
     implementation "androidx.navigation:navigation-ui-ktx:$navigation"
     implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle"
     implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle"
+    implementation "androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle"
     implementation "androidx.work:work-runtime-ktx:$work"
     implementation "androidx.room:room-runtime:$room"
     implementation "androidx.room:room-ktx:$room"

app/src/main/java/com/rtbishop/lookingsat/repo/SatPass.kt

@@ -0,0 +1,5 @@
+package com.rtbishop.lookingsat.repo
+
+import com.github.amsacode.predict4java.SatPassTime
+
+data class SatPass(val satName: String, val catNum: Int, val pass: SatPassTime)

app/src/main/java/com/rtbishop/lookingsat/ui/SatPassAdapter.kt

@@ -5,12 +5,12 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.TextView
 import androidx.recyclerview.widget.RecyclerView
-import com.github.amsacode.predict4java.SatPassTime
 import com.rtbishop.lookingsat.R
+import com.rtbishop.lookingsat.repo.SatPass
 import java.text.SimpleDateFormat
 import java.util.*
 
-class SatPassAdapter(private val satPassList: MutableList<SatPassTime>) :
+class SatPassAdapter(private val satPassList: List<SatPass>) :
     RecyclerView.Adapter<SatPassAdapter.ViewHolder>() {
 
     override fun getItemCount(): Int {
@@ -27,16 +27,19 @@ class SatPassAdapter(private val satPassList: MutableList<SatPassTime>) :
         val satPass = satPassList[position]
 
         val satName = holder.itemView.findViewById<TextView>(R.id.card_sat_name)
-        val passVector = holder.itemView.findViewById<TextView>(R.id.card_pass_vector)
         val maxEl = holder.itemView.findViewById<TextView>(R.id.card_max_el)
+        val passVector = holder.itemView.findViewById<TextView>(R.id.card_pass_vector)
         val passStart = holder.itemView.findViewById<TextView>(R.id.card_pass_start)
         val passEnd = holder.itemView.findViewById<TextView>(R.id.card_pass_end)
 
-        satName.text = String.format("%s", "Meteor M2-2")
-        passVector.text = String.format("V: %02d° -> %02d°", satPass.aosAzimuth, satPass.losAzimuth)
-        maxEl.text = String.format("%.1f°", satPass.maxEl)
-        passStart.text = SimpleDateFormat("HH:mm:ss", Locale.getDefault()).format(satPass.startTime)
-        passEnd.text = SimpleDateFormat("HH:mm:ss", Locale.getDefault()).format(satPass.endTime)
+        satName.text = String.format("%s", satPass.satName)
+        maxEl.text = String.format("%.1f°", satPass.pass.maxEl)
+        passVector.text =
+            String.format("V: %02d° -> %02d°", satPass.pass.aosAzimuth, satPass.pass.losAzimuth)
+        passStart.text =
+            SimpleDateFormat("HH:mm:ss", Locale.getDefault()).format(satPass.pass.startTime)
+        passEnd.text =
+            SimpleDateFormat("HH:mm:ss", Locale.getDefault()).format(satPass.pass.endTime)
     }
 
     inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView),

app/src/main/java/com/rtbishop/lookingsat/ui/SkyFragment.kt

@@ -5,20 +5,31 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.ImageButton
+import android.widget.ProgressBar
+import androidx.appcompat.app.AlertDialog
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.ViewModelProvider
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import com.github.amsacode.predict4java.TLE
+import com.google.android.material.floatingactionbutton.FloatingActionButton
 import com.rtbishop.lookingsat.R
+import com.rtbishop.lookingsat.repo.SatPass
 import com.rtbishop.lookingsat.vm.MainViewModel
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 
 class SkyFragment : Fragment() {
 
     private lateinit var viewModel: MainViewModel
     private lateinit var recView: RecyclerView
     private lateinit var recAdapter: RecyclerView.Adapter<*>
-    private lateinit var recLayoutManager: RecyclerView.LayoutManager
     private lateinit var btnRefresh: ImageButton
+    private lateinit var progressBar: ProgressBar
+    private lateinit var fab: FloatingActionButton
+
+    private var satPassList: List<SatPass> = emptyList()
 
     override fun onCreateView(
         inflater: LayoutInflater,
@@ -32,17 +43,25 @@ class SkyFragment : Fragment() {
         super.onViewCreated(view, savedInstanceState)
         viewModel = ViewModelProvider(activity as MainActivity).get(MainViewModel::class.java)
         btnRefresh = (activity as MainActivity).findViewById(R.id.toolbar_btn_refresh)
+        progressBar = view.findViewById(R.id.sky_progressbar)
+        recView = view.findViewById(R.id.sky_recycler)
+        fab = view.findViewById(R.id.sky_fab)
+
+        recView.layoutManager = LinearLayoutManager(activity)
+        recView.setHasFixedSize(true)
 
         btnRefresh.setOnClickListener {
-            val satPassList = viewModel.updateRecycler()
-
-            recLayoutManager = LinearLayoutManager(activity)
-            recAdapter = SatPassAdapter(satPassList)
-            recView = view.findViewById(R.id.recycler_sky)
-
-            recView.setHasFixedSize(true)
-            recView.layoutManager = recLayoutManager
-            recView.adapter = recAdapter
+            lifecycleScope.launch(Dispatchers.Main) {
+                recView.visibility = View.INVISIBLE
+                progressBar.visibility = View.VISIBLE
+                progressBar.isIndeterminate = true
+                satPassList = viewModel.updateRecycler()
+                recAdapter = SatPassAdapter(satPassList)
+                recView.adapter = recAdapter
+                progressBar.isIndeterminate = false
+                progressBar.visibility = View.INVISIBLE
+                recView.visibility = View.VISIBLE
+            }
         }
     }
 }

app/src/main/java/com/rtbishop/lookingsat/vm/MainViewModel.kt

@@ -4,6 +4,7 @@ import android.app.Application
 import android.content.Context
 import android.content.SharedPreferences
 import android.location.Location
+import android.util.Log
 import androidx.core.content.edit
 import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.LiveData
@@ -12,13 +13,15 @@ import androidx.lifecycle.viewModelScope
 import androidx.preference.PreferenceManager
 import com.github.amsacode.predict4java.GroundStationPosition
 import com.github.amsacode.predict4java.PassPredictor
-import com.github.amsacode.predict4java.SatPassTime
+import com.github.amsacode.predict4java.SatNotFoundException
 import com.github.amsacode.predict4java.TLE
 import com.google.android.gms.location.LocationServices
 import com.rtbishop.lookingsat.Injector
 import com.rtbishop.lookingsat.repo.Repository
+import com.rtbishop.lookingsat.repo.SatPass
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import java.io.FileNotFoundException
 import java.io.IOException
 import java.util.*
@@ -29,12 +32,15 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
     private val keyLon = "LONGITUDE"
     private val keyHeight = "HEIGHT"
     private val tleFile = "tles.txt"
+    private val tag = "myTag"
 
     private val repository: Repository = Injector.provideRepository(application)
     private val preferences = PreferenceManager.getDefaultSharedPreferences(application)
     private val fusedLocationClient = LocationServices.getFusedLocationProviderClient(application)
+
     private val _debugMessage = MutableLiveData("")
     val debugMessage: LiveData<String> = _debugMessage
+
     private val _gsp = MutableLiveData<GroundStationPosition>(
         GroundStationPosition(
             preferences.getDouble(keyLat, 0.0),
@@ -44,17 +50,41 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
     )
     val gsp: LiveData<GroundStationPosition> = _gsp
 
-    fun updateRecycler(): MutableList<SatPassTime> {
-        var satPassList = mutableListOf<SatPassTime>()
-        try {
-            val tles = TLE.importSat(getApplication<Application>().openFileInput(tleFile))
+    var tleList: List<TLE> = loadTwoLineElementFile().sortedWith(compareBy { it.name })
 
-            val passPredictor = PassPredictor(tles[0], _gsp.value)
-            satPassList = passPredictor.getPasses(Date(), 6, false)
+    private fun loadTwoLineElementFile(): List<TLE> {
+        return try {
+            TLE.importSat(getApplication<Application>().openFileInput(tleFile))
         } catch (exception: FileNotFoundException) {
             _debugMessage.postValue("TLE file wasn't found")
+            emptyList()
         }
-        return satPassList
+    }
+
+    suspend fun updateRecycler(): List<SatPass> {
+        val satPassList = mutableListOf<SatPass>()
+        var sortedList = listOf<SatPass>()
+        withContext(Dispatchers.Default) {
+            for (tle in tleList.subList(0, 1)) {
+                try {
+                    Log.d(tag, "Trying ${tle.name}")
+                    val passPredictor = PassPredictor(tle, gsp.value)
+                    val passes = passPredictor.getPasses(Date(), 6, false)
+                    for (pass in passes) {
+                        Log.d(tag, "Trying ${pass.maxEl}")
+                        satPassList.add(SatPass(tle.name, tle.catnum, pass))
+                    }
+                } catch (exception: IllegalArgumentException) {
+                    val tleProblem = "There was a problem with TLE"
+                    Log.d(tag, tleProblem)
+                    _debugMessage.postValue(tleProblem)
+                } catch (exception: SatNotFoundException) {
+                    Log.d(tag, "Certain satellites shall not pass")
+                }
+            }
+            sortedList = satPassList.sortedWith(compareBy { it.pass.startTime })
+        }
+        return sortedList
     }
 
     fun updateLocation() {
@@ -77,9 +107,11 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
     fun updateTwoLineElementFile() {
         viewModelScope.launch(Dispatchers.IO) {
             try {
+                val stream = repository.fetchTleStream()
                 getApplication<Application>().openFileOutput(tleFile, Context.MODE_PRIVATE).use {
-                    it.write(repository.fetchTleStream().readBytes())
+                    it.write(stream.readBytes())
                 }
+                tleList = TLE.importSat(stream)
                 _debugMessage.postValue("TLE file was updated")
             } catch (exception: IOException) {
                 _debugMessage.postValue("Couldn't update TLE file")

app/src/main/res/layout/fragment_sky.xml

@@ -6,10 +6,22 @@
     android:layout_height="match_parent"
     tools:context=".ui.SkyFragment">
 
+    <ProgressBar
+        android:id="@+id/sky_progressbar"
+        style="?android:attr/progressBarStyle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:visibility="invisible"
+        app:layout_constraintBottom_toBottomOf="@+id/sky_recycler"
+        app:layout_constraintEnd_toEndOf="@+id/sky_recycler"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
     <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/recycler_sky"
+        android:id="@+id/sky_recycler"
         android:layout_width="0dp"
         android:layout_height="0dp"
+        android:visibility="invisible"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"