First attempt to add Doppler shift frequency calculations

app/src/main/java/com/rtbishop/look4sat/ui/adapters/TransmitterAdapter.kt

@@ -27,10 +27,17 @@ import androidx.recyclerview.widget.RecyclerView
 import com.rtbishop.look4sat.R
 import com.rtbishop.look4sat.data.Transmitter
 import com.rtbishop.look4sat.databinding.ItemTransmitterBinding
+import com.rtbishop.look4sat.utility.PassPredictor
+import java.util.*
 
 class TransmitterAdapter : RecyclerView.Adapter<TransmitterAdapter.TransmitterHolder>() {
 
     private var transmittersList = emptyList<Transmitter>()
+    private lateinit var predictor: PassPredictor
+
+    fun setPredictor(predict: PassPredictor) {
+        predictor = predict
+    }
 
     fun setList(list: List<Transmitter>) {
         transmittersList = list
@@ -65,6 +72,11 @@ class TransmitterAdapter : RecyclerView.Adapter<TransmitterAdapter.TransmitterHo
                         context.getString(R.string.trans_down_low),
                         transmitter.downlinkLow / freqDivider
                     )
+                binding.transDownlinkDoppler.text = String
+                    .format(
+                        context.getString(R.string.trans_down_low_doppler),
+                        predictor.getDownlinkFreq(transmitter.downlinkLow, Date()) / freqDivider
+                    )
             } else if (transmitter.downlinkLow != null && transmitter.downlinkHigh != null) {
                 binding.transDownlink.text = String
                     .format(
@@ -72,8 +84,15 @@ class TransmitterAdapter : RecyclerView.Adapter<TransmitterAdapter.TransmitterHo
                         transmitter.downlinkLow / freqDivider,
                         transmitter.downlinkHigh / freqDivider
                     )
+                binding.transDownlinkDoppler.text = String
+                    .format(
+                        context.getString(R.string.trans_down_lowHigh_doppler),
+                        predictor.getDownlinkFreq(transmitter.downlinkLow, Date()) / freqDivider,
+                        predictor.getDownlinkFreq(transmitter.downlinkHigh, Date()) / freqDivider
+                    )
             } else {
                 binding.transDownlink.text = context.getString(R.string.no_downlink)
+                binding.transDownlinkDoppler.text = context.getString(R.string.no_downlink_doppler)
             }
 
             if (transmitter.uplinkLow != null && transmitter.uplinkHigh == null) {
@@ -81,14 +100,24 @@ class TransmitterAdapter : RecyclerView.Adapter<TransmitterAdapter.TransmitterHo
                     context.getString(R.string.trans_up_low),
                     transmitter.uplinkLow / freqDivider
                 )
+                binding.transUplinkDoppler.text = String.format(
+                    context.getString(R.string.trans_up_low_doppler),
+                    predictor.getUplinkFreq(transmitter.uplinkLow, Date()) / freqDivider
+                )
             } else if (transmitter.uplinkLow != null && transmitter.uplinkHigh != null) {
                 binding.transUplink.text = String.format(
                     context.getString(R.string.trans_up_lowHigh),
                     transmitter.uplinkLow / freqDivider,
                     transmitter.uplinkHigh / freqDivider
                 )
+                binding.transUplinkDoppler.text = String.format(
+                    context.getString(R.string.trans_up_lowHigh_doppler),
+                    predictor.getUplinkFreq(transmitter.uplinkLow, Date()) / freqDivider,
+                    predictor.getUplinkFreq(transmitter.uplinkHigh, Date()) / freqDivider
+                )
             } else {
                 binding.transUplink.text = context.getString(R.string.no_uplink)
+                binding.transUplinkDoppler.text = context.getString(R.string.no_uplink_doppler)
             }
 
             if (transmitter.mode != null) {

app/src/main/java/com/rtbishop/look4sat/ui/fragments/PolarViewFragment.kt

@@ -142,6 +142,7 @@ class PolarViewFragment : Fragment(R.layout.fragment_polar_view), SensorEventLis
     private fun observeTransmitters() {
         viewModel.getTransmittersForSat(satPass.tle.catnum).observe(viewLifecycleOwner, Observer {
             if (it.isNotEmpty()) {
+                transmitterAdapter.setPredictor(satPass.predictor)
                 transmitterAdapter.setList(it)
                 transmitterAdapter.notifyDataSetChanged()
                 binding.recPolar.visibility = View.VISIBLE

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

@@ -57,6 +57,34 @@
             app:layout_constraintStart_toEndOf="@+id/trans_img_uplink"
             app:layout_constraintTop_toBottomOf="@+id/trans_downlink" />
 
+        <View
+            android:id="@+id/separator"
+            android:layout_width="match_parent"
+            android:padding="15dp"
+            android:layout_marginLeft="20dp"
+            android:layout_marginRight="20dp"
+            android:layout_height="1dp"
+            app:layout_constraintHorizontal_bias="0.5"
+            app:layout_constraintTop_toBottomOf="@+id/trans_uplink"
+            android:background="#333"/>
+
+        <TextView
+            android:id="@+id/trans_downlink_doppler"
+            style="@style/CardTransText"
+            android:text="@string/trans_down_lowHigh_doppler"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toEndOf="@+id/trans_img_downlink_doppler"
+            app:layout_constraintTop_toBottomOf="@+id/separator" />
+
+        <TextView
+            android:id="@+id/trans_uplink_doppler"
+            style="@style/CardTransText"
+            android:text="@string/trans_up_lowHigh_doppler"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.5"
+            app:layout_constraintStart_toEndOf="@+id/trans_img_uplink_doppler"
+            app:layout_constraintTop_toBottomOf="@+id/trans_downlink_doppler" />
+
         <TextView
             android:id="@+id/trans_mode"
             style="@style/CardTransText"
@@ -65,7 +93,7 @@
             android:text="@string/trans_mode"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/trans_uplink" />
+            app:layout_constraintTop_toBottomOf="@+id/trans_uplink_doppler" />
 
         <TextView
             android:id="@+id/trans_inverted"
@@ -114,5 +142,32 @@
             app:layout_constraintTop_toBottomOf="@+id/trans_downlink"
             app:srcCompat="@drawable/ic_arrow" />
 
+        <ImageView
+            android:id="@+id/trans_img_downlink_doppler"
+            android:layout_width="20dp"
+            android:layout_height="20dp"
+            android:contentDescription="@string/placeholder"
+            android:rotation="180"
+            app:layout_constraintBottom_toBottomOf="@+id/trans_downlink_doppler"
+            app:layout_constraintEnd_toStartOf="@+id/trans_downlink_doppler"
+            app:layout_constraintHorizontal_bias="0.5"
+            app:layout_constraintHorizontal_chainStyle="packed"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="@+id/trans_downlink_doppler"
+            app:srcCompat="@drawable/ic_arrow" />
+
+        <ImageView
+            android:id="@+id/trans_img_uplink_doppler"
+            android:layout_width="20dp"
+            android:layout_height="20dp"
+            android:contentDescription="@string/placeholder"
+            app:layout_constraintBottom_toBottomOf="@+id/trans_uplink_doppler"
+            app:layout_constraintEnd_toStartOf="@+id/trans_uplink_doppler"
+            app:layout_constraintHorizontal_bias="0.5"
+            app:layout_constraintHorizontal_chainStyle="packed"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/trans_downlink_doppler"
+            app:srcCompat="@drawable/ic_arrow" />
+
     </androidx.constraintlayout.widget.ConstraintLayout>
 </com.google.android.material.card.MaterialCardView>

app/src/main/res/values-ru/strings.xml

@@ -92,6 +92,10 @@
     <string name="trans_up_lowHigh">Восход.: %.4f - %.4f MHz</string>
     <string name="trans_down_low">Нисход.: %.4f MHz</string>
     <string name="trans_down_lowHigh">Нисход.: %.4f - %.4f MHz</string>
+    <string name="trans_up_low_doppler">Восход.: %.4f MHz</string>
+    <string name="trans_up_lowHigh_doppler">Восход.: %.4f - %.4f MHz</string>
+    <string name="trans_down_low_doppler">Нисход.: %.4f MHz</string>
+    <string name="trans_down_lowHigh_doppler">Нисход.: %.4f - %.4f MHz</string>
 
     <string name="info_swipe_text">Проведите по экрану вниз, чтобы обновить список пролетов
         для выбранных спутников</string>

app/src/main/res/values/strings.xml

@@ -78,6 +78,8 @@
     <string name="no_mode">Mode: null</string>
     <string name="no_uplink">Uplink: null</string>
     <string name="no_downlink">Downlink: null</string>
+    <string name="no_uplink_doppler">Current uplink: null</string>
+    <string name="no_downlink_doppler">Current downlink: null</string>
     <string name="no_trans">No transceivers found for this satellite</string>
 
     <string name="err_no_permissions">Missing permissions</string>
@@ -108,6 +110,10 @@
     <string name="trans_up_lowHigh">Uplink: %.4f - %.4f MHz</string>
     <string name="trans_down_low">Downlink: %.4f MHz</string>
     <string name="trans_down_lowHigh">Downlink: %.4f - %.4f MHz</string>
+    <string name="trans_up_low_doppler">Current uplink: %.4f MHz</string>
+    <string name="trans_up_lowHigh_doppler">Current uplink: %.4f - %.4f MHz</string>
+    <string name="trans_down_low_doppler">Current downlink: %.4f MHz</string>
+    <string name="trans_down_lowHigh_doppler">Current downlink: %.4f - %.4f MHz</string>
 
     <string name="info_swipe_text">
         Swipe the screen to refresh the list of passes for selected satellites</string>

build.gradle

@@ -26,9 +26,10 @@ buildscript {
 
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.6.3'
+        classpath 'com.android.tools.build:gradle:4.0.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.72"
         classpath "androidx.navigation:navigation-safe-args-gradle-plugin:2.2.2"
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.10"
     }
 }
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,26 +1,6 @@
-#
+#Thu Sep 17 13:43:53 CEST 2020
-# Look4Sat. Amateur radio and weather satellite tracker and passes predictor for Android.
-# Copyright (C) 2019, 2020 Arty Bishop (bishop.arty@gmail.com)
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with this program; if not, write to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-
-#Mon Feb 24 22:26:03 GMT 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip
-distributionSha256Sum=abc10bcedb58806e8654210f96031db541bcd2d6fc3161e81cb0572d6a15e821