Question

我的LocalBroadcastManager回调函数选择'接收消息。有人可以告诉我为什么吗？

我尝试在我的三星Galaxy S3 mini（4.1.2 -Jelly Bean，API 16）上进行此操作。

SenderClass：

public static final String BROADCAST = "com.android.SOME_BROADCAST";
private Context context;

public SenderClass(Context context) {
        this.context = context;
        //...

    Intent intent = new Intent(BROADCAST);
    //intent.putExtra(EXTRA_SOMEEXTRA, "some extra");
    LocalBroadcastManager.getInstance(context).sendBroadcast(intent);
    //just to keep it simple i do it here
}

MainActivity

private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            Log.d(TAG, "onReceive"); //this is never called!

        }
    };

@Override
    protected void onResume() {
        super.onResume();
        Log.d(TAG, "onResume()");

        LocalBroadcastManager.getInstance(this).registerReceiver(
                broadcastReceiver,
                new IntentFilter(SenderClass.BROADCAST)
        );
    }

    @Override
    protected void onPause() {
        super.onPause();
        Log.d(TAG, "onPause()");

        LocalBroadcastManager.getInstance(this).unregisterReceiver(broadcastReceiver);
    }

编辑：这里是清单

清单

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

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".Activities.MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <service
            android:name=".Services.MyService"
            android:enabled="true"
            android:exported="false"></service>
    </application>

</manifest>

Answer 1

尝试此步骤： - 在onCreate中注册您的广播，并在onDestroy of Activity中取消注册广播。

谢谢，它可能对你有所帮助。

LocalBroadcastManager未收到消息

1 个答案: