Add target SDK

app/build.gradle

@@ -1,15 +1,15 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 30
 
     defaultConfig {
         applicationId 'org.traccar.client'
         buildConfigField 'boolean', 'HIDDEN_APP', 'false'
         minSdkVersion 16
-        targetSdkVersion 29
-        versionCode 65
-        versionName '6.4'
+        targetSdkVersion 30
+        versionCode 67
+        versionName '6.6'
         multiDexEnabled true
     }
 
@@ -46,7 +46,7 @@ android {
 }
 
 dependencies {
-    implementation 'com.google.android.material:material:1.3.0-alpha02'
+    implementation 'com.google.android.material:material:1.3.0-alpha03'
     implementation 'androidx.multidex:multidex:2.0.1'
     implementation 'androidx.preference:preference:1.1.1'
     testImplementation 'junit:junit:4.13'
@@ -55,6 +55,7 @@ dependencies {
     googleImplementation 'com.google.firebase:firebase-crashlytics-gradle:2.3.0'
     googleImplementation 'com.google.firebase:firebase-analytics:17.5.0'
     googleImplementation 'com.google.android.gms:play-services-location:17.1.0'
+    googleImplementation 'com.google.android.play:core:1.8.2'
 }
 
 if (getGradle().getStartParameter().getTaskRequests().toString().contains('Google')) {

app/src/google/java/org/traccar/client/GoogleMainApplication.java

@@ -15,16 +15,55 @@
  */
 package org.traccar.client;
 
+import android.app.Activity;
+import android.content.IntentFilter;
+import android.content.SharedPreferences;
+import android.os.Build;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.RequiresApi;
+import androidx.preference.PreferenceManager;
+
+import com.google.android.play.core.review.ReviewManager;
+import com.google.android.play.core.review.ReviewManagerFactory;
+import com.google.android.play.core.tasks.Task;
 import com.google.firebase.analytics.FirebaseAnalytics;
 
 public class GoogleMainApplication extends MainApplication {
 
+    private static final String KEY_RATING_SHOWN = "ratingShown";
+    private static final long RATING_THRESHOLD = -24 * 60 * 60 * 1000L;
+
     private FirebaseAnalytics firebaseAnalytics;
 
     @Override
     public void onCreate() {
         super.onCreate();
         firebaseAnalytics = FirebaseAnalytics.getInstance(this);
+
+        IntentFilter filter = new IntentFilter();
+        filter.addAction(TrackingService.ACTION_STARTED);
+        filter.addAction(TrackingService.ACTION_STOPPED);
+        registerReceiver(new ServiceReceiver(), filter);
+    }
+
+    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP_MR1)
+    @Override
+    public void handleRatingFlow(@NonNull Activity activity) {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
+        boolean ratingShown = preferences.getBoolean(KEY_RATING_SHOWN, false);
+        long totalDuration = preferences.getLong(ServiceReceiver.KEY_DURATION, 0);
+        if (!ratingShown && totalDuration > RATING_THRESHOLD) {
+            ReviewManager reviewManager = ReviewManagerFactory.create(activity);
+            reviewManager.requestReviewFlow().addOnCompleteListener(infoTask -> {
+                if (infoTask.isSuccessful()) {
+                    Task<Void> flow = reviewManager.launchReviewFlow(activity, infoTask.getResult());
+                    flow.addOnCompleteListener(flowTask -> {
+                        preferences.edit().putBoolean(KEY_RATING_SHOWN, true).apply();
+                    });
+                }
+            });
+        }
     }
 
 }

app/src/google/java/org/traccar/client/ServiceReceiver.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2020 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.client;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+
+import androidx.preference.PreferenceManager;
+
+public class ServiceReceiver extends BroadcastReceiver {
+
+    public static final String KEY_DURATION = "serviceTime";
+
+    private static long startTime = 0;
+    
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        if (TrackingService.ACTION_STARTED.equals(intent.getAction())) {
+            startTime = System.currentTimeMillis();
+        } else {
+            if (startTime > 0) {
+                updateTime(context, System.currentTimeMillis() - startTime);
+                startTime = 0;
+            }
+        }
+    }
+
+    private void updateTime(Context context, long duration) {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+        long totalDuration = preferences.getLong(KEY_DURATION, 0);
+        preferences.edit().putLong(KEY_DURATION, totalDuration + duration).apply();
+    }
+
+}

app/src/main/java/org/traccar/client/MainActivity.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2017 - 2020 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,9 +24,7 @@ public class MainActivity extends AppCompatActivity {
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        if (savedInstanceState == null) {
-            getSupportFragmentManager().beginTransaction().replace(android.R.id.content, new MainFragment()).commit();
-        }
+        setContentView(R.layout.main);
     }
 
 }

app/src/main/java/org/traccar/client/MainApplication.java

@@ -16,6 +16,7 @@
 package org.traccar.client;
 
 import android.annotation.TargetApi;
+import android.app.Activity;
 import android.app.Notification;
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
@@ -26,6 +27,7 @@ import android.net.Uri;
 import android.os.Build;
 import android.preference.PreferenceManager;
 
+import androidx.annotation.NonNull;
 import androidx.multidex.MultiDexApplication;
 
 public class MainApplication extends MultiDexApplication {
@@ -71,4 +73,7 @@ public class MainApplication extends MultiDexApplication {
         }
     }
 
+    public void handleRatingFlow(@NonNull Activity activity) {
+    }
+
 }

app/src/main/java/org/traccar/client/MainFragment.java

@@ -47,6 +47,8 @@ import androidx.preference.PreferenceFragmentCompat;
 import androidx.preference.PreferenceManager;
 import androidx.preference.TwoStatePreference;
 
+import com.google.android.material.snackbar.Snackbar;
+
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Random;
@@ -69,6 +71,7 @@ public class MainFragment extends PreferenceFragmentCompat implements OnSharedPr
     public static final String KEY_WAKELOCK = "wakelock";
 
     private static final int PERMISSIONS_REQUEST_LOCATION = 2;
+    private static final String KEY_DISCLOSURE_SHOWN = "disclosureShown";
 
     private SharedPreferences sharedPreferences;
 
@@ -77,6 +80,7 @@ public class MainFragment extends PreferenceFragmentCompat implements OnSharedPr
 
     @Override
     public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
+
         if (BuildConfig.HIDDEN_APP && Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
             removeLauncherIcon();
         }
@@ -191,6 +195,17 @@ public class MainFragment extends PreferenceFragmentCompat implements OnSharedPr
     public void onResume() {
         super.onResume();
         sharedPreferences.registerOnSharedPreferenceChangeListener(this);
+
+        if (!sharedPreferences.getBoolean(KEY_DISCLOSURE_SHOWN, false)) {
+            Snackbar.make(getView(), R.string.disclosure_location, Snackbar.LENGTH_INDEFINITE)
+                    .addCallback(new Snackbar.Callback() {
+                        @Override
+                        public void onDismissed(Snackbar transientBottomBar, int event) {
+                            sharedPreferences.edit().putBoolean(KEY_DISCLOSURE_SHOWN, true).apply();
+                        }
+                    })
+                    .show();
+        }
     }
 
     @Override
@@ -218,6 +233,7 @@ public class MainFragment extends PreferenceFragmentCompat implements OnSharedPr
             } else {
                 stopTrackingService();
             }
+            ((MainApplication) getActivity().getApplication()).handleRatingFlow(getActivity());
         } else if (key.equals(KEY_DEVICE)) {
             findPreference(KEY_DEVICE).setSummary(sharedPreferences.getString(KEY_DEVICE, null));
         }

app/src/main/java/org/traccar/client/TrackingService.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 - 2019 Anton Tananaev (anton@traccar.org)
+ * Copyright 2012 - 2020 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -34,6 +34,9 @@ import android.util.Log;
 
 public class TrackingService extends Service {
 
+    public static final String ACTION_STARTED = "org.traccar.action.SERVICE_STARTED";
+    public static final String ACTION_STOPPED = "org.traccar.action.SERVICE_STOPPED";
+
     private static final String TAG = TrackingService.class.getSimpleName();
     private static final int NOTIFICATION_ID = 1;
 
@@ -82,6 +85,7 @@ public class TrackingService extends Service {
     @Override
     public void onCreate() {
         Log.i(TAG, "service create");
+        sendBroadcast(new Intent(ACTION_STARTED));
         StatusActivity.addMessage(getString(R.string.status_service_create));
 
         startForeground(NOTIFICATION_ID, createNotification(this));
@@ -120,6 +124,7 @@ public class TrackingService extends Service {
     @Override
     public void onDestroy() {
         Log.i(TAG, "service destroy");
+        sendBroadcast(new Intent(ACTION_STOPPED));
         StatusActivity.addMessage(getString(R.string.status_service_destroy));
 
         stopForeground(true);

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

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.fragment.app.FragmentContainerView
+        android:id="@+id/fragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:name="org.traccar.client.MainFragment" />
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

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

@@ -46,4 +46,5 @@
   <string name="hidden_app_name">Device Settings</string>
   <string name="hidden_alert">The app has been hidden. To open it again please dial 8722227 (TRACCAR).</string>
   <string name="error_msg_invalid_url">Please enter a valid http:// or https:// URL</string>
+  <string name="disclosure_location">This app collects location data to enable live tracking even when the app is closed or not in use.</string>
 </resources>

build.gradle

@@ -4,9 +4,9 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.0.1'
-        classpath 'com.google.gms:google-services:4.3.3'
-        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.3.0'
+        classpath 'com.android.tools.build:gradle:4.2.0-beta01'
+        classpath 'com.google.gms:google-services:4.3.4'
+        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.4.1'
     }
 }
 

gradle.properties

@@ -1,2 +1 @@
-android.enableJetifier=true
 android.useAndroidX=true

gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip
+distributionUrl=https://services.gradle.org/distributions/gradle-6.7-bin.zip