FirebaseDatabase.getInstance().setPersistenceEnabled(true) crashes my app

Question

My app keeps crashing when it sets the persistence-enable. If the parent field is found in Firebase it crashes, if not, it loads the layout properly. Then on storing data on firebase it crashes again as now the parent is found in the database.

 protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_chat_line);

    final DatabaseReference reference1, reference2;

    if(!FirebaseApp.getApps(this).isEmpty()) {
        FirebaseDatabase.getInstance().setPersistenceEnabled(true);
    }

    layout = (LinearLayout)findViewById(R.id.layout1);
    sendButton = (ImageView)findViewById(R.id.sendButton);
    messageArea = (EditText)findViewById(R.id.messageArea);
    scrollView = (ScrollView)findViewById(R.id.scrollView);

        reference1 = FirebaseDatabase.getInstance().getReference("message/" + "username" + "_" + "admin");
        reference2 = FirebaseDatabase.getInstance().getReference("message/" + "admin" + "_" + "username");

put FirebaseDatabase.getInstance().setPersistenceEnabled(true); in app Application file. — Priya, Oct 07 '17 at 11:44
Possible duplicate of [setPersistenceEnabled(true) crashes app](https://stackoverflow.com/questions/37448186/setpersistenceenabledtrue-crashes-app) — akhilesh0707, Oct 07 '17 at 11:47
If you are seeing a crash, include the stack trace in your question. — Doug Stevenson, Oct 07 '17 at 11:52

score 0 · Accepted Answer · answered Oct 07 '17 at 11:43

First of all you create a class for application like as

public class MApplication extends Application {

@Override
public void onCreate() {
    super.onCreate();
    FirebaseDatabase.getInstance().setPersistenceEnabled(true);
}}

In Manifest.xml, set the application name as MApplication:

 <application
    android:name="com.MyApplication"
    android:allowBackup="false"
    android:icon="@mipmap/logo"
 android:supportsRtl="true"
    android:theme="@style/AppTheme">

FirebaseDatabase.getInstance().setPersistenceEnabled(true) crashes my app

1 Answers1