Use custom layout for message dialogs

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

@@ -20,7 +20,11 @@ package eu.faircode.email;
 */
 
 import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.TextView;
 
+import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
 import androidx.lifecycle.Lifecycle;
 import androidx.lifecycle.LifecycleObserver;
@@ -30,6 +34,7 @@ import androidx.lifecycle.OnLifecycleEvent;
 public class DialogBuilderLifecycle extends AlertDialog.Builder implements LifecycleObserver {
     private LifecycleOwner owner;
     private AlertDialog dialog;
+    private boolean hasMessage = false;
 
     public DialogBuilderLifecycle(Context context, LifecycleOwner owner) {
         super(context);
@@ -41,6 +46,35 @@ public class DialogBuilderLifecycle extends AlertDialog.Builder implements Lifec
         this.owner = owner;
     }
 
+    @Override
+    public AlertDialog.Builder setTitle(int titleId) {
+        if (hasMessage)
+            throw new IllegalArgumentException("Custom message set");
+        return super.setTitle(titleId);
+    }
+
+    @Override
+    public AlertDialog.Builder setTitle(@Nullable CharSequence title) {
+        if (hasMessage)
+            throw new IllegalArgumentException("Custom message set");
+        return super.setTitle(title);
+    }
+
+    @Override
+    public AlertDialog.Builder setMessage(int messageId) {
+        return setMessage(getContext().getString(messageId));
+    }
+
+    @Override
+    public AlertDialog.Builder setMessage(@Nullable CharSequence message) {
+        hasMessage = true;
+        View dview = LayoutInflater.from(getContext()).inflate(R.layout.dialog_message, null);
+        TextView tvMessage = dview.findViewById(R.id.tvMessage);
+        tvMessage.setText(message);
+        setView(dview);
+        return this;
+    }
+
     @Override
     public AlertDialog create() {
         dialog = super.create();