當我創建擴展BrodcastReceiver類和註冊。 錯誤Unable to destroy activity, Receiver not registered: null
MainActivity中的onDestroy()函數當調用unregisterReceiver時。接收未註冊錯誤時的onDestroy函數調用
的onCreate():
ConnectionChangeReceiver connectionChangeReceiver = new ConnectionChangeReceiver();
IntentFilter filter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
registerReceiver(connectionChangeReceiver, filter);
的onDestroy():
@Override
protected void onDestroy() {
Log.v("YourActivity", "onDestroy");
unregisterReceiver(connectionChangeReceiver);
super.onDestroy();
}
ConnectionChangeReceiver類別:
public class ConnectionChangeReceiver extends BroadcastReceiver
{
@Override
public void onReceive(Context context, Intent intent)
{
Toast.makeText(context, "CONN", Toast.LENGTH_SHORT).show();
}
}
清單:UPDATE:
添加<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>
確定的接收器被註冊?你的AndroidManifest.xml中是否有正確的設置? –
Squonk
2014-12-06 08:57:12
看看這個[鏈接](http://stackoverflow.com/questions/6165070/receiver-not-registered-exception-error)。你是否在其他地方取消註冊,是否有可能再次取消註冊? 你是否暫停(並且你在onPause()中註銷了代碼),然後再次啓動,並且你忘記將該寄存器放入onResume()中? – SummerCode 2014-12-06 08:44:54
@Squonk <用途的許可機器人:名稱= 「android.permission.INTERNET對」/> <使用的許可機器人:名稱= 「android.permission.ACCESS_NETWORK_STATE」/> – mamrezo 2014-12-06 09:01:21