Back fixes

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

@@ -27,8 +27,10 @@ import android.content.SharedPreferences;
 import android.content.res.Configuration;
 import android.os.Bundle;
 import android.os.PowerManager;
+import android.view.MenuItem;
 import android.widget.Toast;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.lifecycle.Lifecycle;
@@ -260,6 +262,18 @@ abstract class ActivityBase extends AppCompatActivity implements SharedPreferenc
         super.onBackPressed();
     }
 
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        switch (item.getItemId()) {
+            case android.R.id.home:
+                if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
+                    onBackPressed();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+
     protected boolean backHandled() {
         for (IBackPressedListener listener : backPressedListeners)
             if (listener.onBackPressed())

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

@@ -148,18 +148,6 @@ public class ActivityBilling extends ActivityBase implements PurchasesUpdatedLis
         super.onDestroy();
     }
 
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        switch (item.getItemId()) {
-            case android.R.id.home:
-                if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
-                    onBackPressed();
-                return true;
-            default:
-                return false;
-        }
-    }
-
     @NonNull
     static String getSkuPro() {
         if (BuildConfig.DEBUG)

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

@@ -198,16 +198,4 @@ public class ActivityCompose extends ActivityBase implements FragmentManager.OnB
             finishAndRemoveTask();
         }
     }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        switch (item.getItemId()) {
-            case android.R.id.home:
-                if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
-                    onBackPressed();
-                return true;
-            default:
-                return false;
-        }
-    }
 }

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

@@ -347,12 +347,6 @@ public class ActivitySetup extends ActivityBase implements FragmentManager.OnBac
         if (drawerToggle.onOptionsItemSelected(item))
             return true;
 
-        switch (item.getItemId()) {
-            case android.R.id.home:
-                if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
-                    getSupportFragmentManager().popBackStack();
-                return true;
-        }
         return super.onOptionsItemSelected(item);
     }
 

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

@@ -582,14 +582,7 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
         if (drawerToggle.onOptionsItemSelected(item))
             return true;
 
-        switch (item.getItemId()) {
+        return super.onOptionsItemSelected(item);
-            case android.R.id.home:
-                if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
-                    getSupportFragmentManager().popBackStack();
-                return true;
-            default:
-                return false;
-        }
     }
 
     private void checkFirst() {

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

@@ -939,10 +939,6 @@ public class FragmentCompose extends FragmentBase {
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
-            case android.R.id.home:
-                if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
-                    onExit();
-                return true;
             case R.id.menu_encrypt:
                 onMenuEncrypt();
                 return true;