fix bug

app/src/main/java/com/mogo/cloud/RealTimeActivity.java

@@ -3,6 +3,7 @@ package com.mogo.cloud;
 import android.os.Bundle;
 import android.util.Log;
 import android.widget.Button;
+import android.widget.TextView;
 
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
@@ -40,7 +41,6 @@ public class RealTimeActivity extends AppCompatActivity implements IMogoCloudOnM
         snapshotStopButton.setOnClickListener(view -> {
             stopRealTimeService();
         });
-
     }
 
     private void setConfig() {