Finish affinity

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

@@ -60,6 +60,12 @@ public class ActivityCompose extends ActivityBase implements FragmentManager.OnB
     @Override
     public void onBackStackChanged() {
         if (getSupportFragmentManager().getBackStackEntryCount() == 0) {
+            Intent intent = getIntent();
+            if (intent != null && isShared(intent.getAction())) {
+                finishAffinity();
+                return;
+            }
+
             Intent parent = getParentActivityIntent();
             if (parent != null)
                 if (shouldUpRecreateTask(parent))
@@ -78,11 +84,7 @@ public class ActivityCompose extends ActivityBase implements FragmentManager.OnB
     private void handle(Intent intent) {
         Bundle args;
         String action = intent.getAction();
-        if (Intent.ACTION_VIEW.equals(action) ||
-                Intent.ACTION_SENDTO.equals(action) ||
-                Intent.ACTION_SEND.equals(action) ||
-                Intent.ACTION_SEND_MULTIPLE.equals(action)) {
-
+        if (isShared(action)) {
             args = new Bundle();
             args.putString("action", "new");
             args.putLong("account", -1);
@@ -199,4 +201,11 @@ public class ActivityCompose extends ActivityBase implements FragmentManager.OnB
         fragmentTransaction.replace(R.id.content_frame, fragment).addToBackStack("compose");
         fragmentTransaction.commit();
     }
+
+    private static boolean isShared(String action) {
+        return (Intent.ACTION_VIEW.equals(action) ||
+                Intent.ACTION_SENDTO.equals(action) ||
+                Intent.ACTION_SEND.equals(action) ||
+                Intent.ACTION_SEND_MULTIPLE.equals(action));
+    }
 }