Use local broadcast receivers

app/src/main/java/eu/faircode/email/ApplicationEx.java

@@ -41,6 +41,7 @@ import android.webkit.CookieManager;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatDelegate;
+import androidx.core.content.ContextCompat;
 import androidx.core.os.LocaleListCompat;
 import androidx.emoji2.text.DefaultEmojiCompatConfig;
 import androidx.emoji2.text.EmojiCompat;
@@ -264,7 +265,10 @@ public class ApplicationEx extends Application
             }
         }
 
-        registerReceiver(onScreenOff, new IntentFilter(Intent.ACTION_SCREEN_OFF));
+        ContextCompat.registerReceiver(this,
+                onScreenOff,
+                new IntentFilter(Intent.ACTION_SCREEN_OFF),
+                ContextCompat.RECEIVER_NOT_EXPORTED);
 
         long end = new Date().getTime();
         Log.i("App created " + (end - start) + " ms");

app/src/main/java/eu/faircode/email/FragmentMessages.java

@@ -5153,7 +5153,10 @@ public class FragmentMessages extends FragmentBase
         cm.registerNetworkCallback(builder.build(), networkCallback);
 
         updateAirplaneMode(ConnectionHelper.airplaneMode(context));
-        context.registerReceiver(airplanemode, new IntentFilter(Intent.ACTION_AIRPLANE_MODE_CHANGED));
+        ContextCompat.registerReceiver(context,
+                airplanemode,
+                new IntentFilter(Intent.ACTION_AIRPLANE_MODE_CHANGED),
+                ContextCompat.RECEIVER_NOT_EXPORTED);
 
         boolean isIgnoring = !Boolean.FALSE.equals(Helper.isIgnoringOptimizations(context));
         //boolean canSchedule = AlarmManagerCompatEx.canScheduleExactAlarms(context);

app/src/main/java/eu/faircode/email/ServiceSend.java

@@ -179,7 +179,10 @@ public class ServiceSend extends ServiceBase implements SharedPreferences.OnShar
         IntentFilter iif = new IntentFilter();
         iif.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
         iif.addAction(Intent.ACTION_AIRPLANE_MODE_CHANGED);
-        registerReceiver(connectionChangedReceiver, iif);
+        ContextCompat.registerReceiver(this,
+                connectionChangedReceiver,
+                iif,
+                ContextCompat.RECEIVER_NOT_EXPORTED);
 
         PreferenceManager.getDefaultSharedPreferences(this).registerOnSharedPreferenceChangeListener(this);
     }

app/src/main/java/eu/faircode/email/ServiceSynchronize.java

@@ -212,22 +212,37 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
         IntentFilter iif = new IntentFilter();
         iif.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
         iif.addAction(Intent.ACTION_AIRPLANE_MODE_CHANGED);
-        registerReceiver(connectionChangedReceiver, iif);
+        ContextCompat.registerReceiver(this,
+                connectionChangedReceiver,
+                iif,
+                ContextCompat.RECEIVER_NOT_EXPORTED);
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
-            registerReceiver(idleModeChangedReceiver, new IntentFilter(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED));
+            ContextCompat.registerReceiver(this,
+                    idleModeChangedReceiver,
+                    new IntentFilter(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED),
+                    ContextCompat.RECEIVER_NOT_EXPORTED);
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
-            registerReceiver(dataSaverChanged, new IntentFilter(ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED));
+            ContextCompat.registerReceiver(this,
+                    dataSaverChanged,
+                    new IntentFilter(ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED),
+                    ContextCompat.RECEIVER_NOT_EXPORTED);
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
             IntentFilter suspend = new IntentFilter();
             suspend.addAction(Intent.ACTION_MY_PACKAGE_SUSPENDED);
             suspend.addAction(Intent.ACTION_MY_PACKAGE_UNSUSPENDED);
-            registerReceiver(suspendChanged, suspend);
+            ContextCompat.registerReceiver(this,
+                    suspendChanged,
+                    suspend,
+                    ContextCompat.RECEIVER_NOT_EXPORTED);
         }
 
-        registerReceiver(batteryChanged, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
+        ContextCompat.registerReceiver(this,
+                batteryChanged,
+                new IntentFilter(Intent.ACTION_BATTERY_CHANGED),
+                ContextCompat.RECEIVER_NOT_EXPORTED);
 
         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);