Receiver not registered error when onDestroy function called

Question

When I create class that extends BrodcastReceiver and register it. Error Unable to destroy activity, Receiver not registered: null onDestroy() function in MainActivity When call unregisterReceiver.

onCreate():

ConnectionChangeReceiver connectionChangeReceiver = new ConnectionChangeReceiver();
IntentFilter filter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
registerReceiver(connectionChangeReceiver, filter);

onDestroy():

@Override
protected void onDestroy() {
    Log.v("YourActivity", "onDestroy");
    unregisterReceiver(connectionChangeReceiver);
    super.onDestroy();
}

ConnectionChangeReceiver Class:

public class ConnectionChangeReceiver extends BroadcastReceiver
{
    @Override
    public void onReceive( Context context, Intent intent )
    {
        Toast.makeText(context, "CONN", Toast.LENGTH_SHORT).show();
    }
}

manifest: UPDATE: After adding <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mamrezo.mapapp" >

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >


    <activity
        android:name="com.example.mamrezo.mapapp.MainActivity"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <receiver android:name=".ConnectionChangeReceiver" >
        <intent-filter>
            <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
        </intent-filter>
    </receiver>

</application>

</manifest>

Are you sure the receiver is being registered? Do you have the correct `` setting in your AndroidManifest.xml? — Squonk, Dec 06 '14 at 08:57
Have a look at this [link](http://stackoverflow.com/questions/6165070/receiver-not-registered-exception-error). Do you unregister it somewhere else and is it possible you are unregistering again? Are you pausing(and you have unregistering code in onPause()) and then starting again and you forgot to put the register in onResume()? — SummerCode, Dec 06 '14 at 08:44
@mamrezo : Hmm, OK. Does the receiver work? In other words do you see the `Toast` when network changes occur? — Squonk, Dec 06 '14 at 09:12
@mamrezo : Edit your question to show the logcat data for when you get that error. — Squonk, Dec 06 '14 at 09:18
wow I am person number 4 to have this issue.. I also seem to have in my code: extends BroadcastReceiver. what did you do to fix it? — hamish, Feb 20 '16 at 20:24

score 1 · Answer 1 · edited May 23 '17 at 11:59

1

I always register the receiver in the onStart and unregister it in the onStop. I knew this thanks to this answer : https://stackoverflow.com/a/24391706/1203797

If its still not working in your case, simply wrapunregisterReceiver(connectionChangeReceiver); a try-catch block would be the answer, as stated in the link i posted above.

Or you can register it in the manifest, example :

    <receiver android:name=".ConnectionChangeReceiver" >
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>

edited May 23 '17 at 11:59

Community

1
1

answered Dec 06 '14 at 08:48

Blaze Tama

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you can register it in the manifest: i do but still not working – mamrezo Dec 06 '14 at 09:02
i add register `onStart` and unregister `onStop ` but still not working – mamrezo Dec 06 '14 at 09:03
@mamrezo is there any error message when you register it in the `manifest` – Blaze Tama Dec 06 '14 at 09:06
@mamrezo sorry, just to make sure : you should remove the `java` code for `register` and `unregister` when you declare it in the manifest. Have you done that? – Blaze Tama Dec 06 '14 at 09:11
when i use `BroadcastReceiver` without Class works well but when i create class that extends `BroadcastReceiver` i have this error – mamrezo Dec 06 '14 at 09:11
@mamrezo There should be no problem..have you checked my previous comment? – Blaze Tama Dec 06 '14 at 09:17
when i declare it in the manifest and remove the unregister from onDestroy and onStop i have no error but The Class is not working – mamrezo Dec 06 '14 at 09:18
@mamrezo Please post your `manifest` code or try to use the `try-catch` (see my answer) – Blaze Tama Dec 06 '14 at 09:27

Receiver not registered error when onDestroy function called

1 Answers1