android - 动态注册时未调用 BroadcastReceiver onReceive()

Question

当 BroadcastReceiver 在 Manifest 中注册时调用函数“onReceive”，但如果是动态注册则NOT调用。

有效的代码如下:

public class EyeGesture extends BroadcastReceiver {
    //Eye Gesture
    private static IntentFilter eyeGestureIntent;
    private static Context eyeGestureContext;
    private static StringBuilder gestureInfo = null;
    private static BroadcastReceiver broadcastReceiver;

   // public void startEyeListening() {
        //Eye Gesture

    //}

    @Override
    public void onReceive(Context context, Intent intent) {
       // this = context;
        if (intent.getStringExtra("gesture").equals("WINK")) {
            Log.e("WINKED ","");
        }else {
            Log.e("SOMETHING", "is detected " + intent.getStringExtra("gesture"));
        }
        //Disable Camera Snapshot
       // abortBroadcast();

    }

    public void stopEyeListening() {
        eyeGestureContext.unregisterReceiver(broadcastReceiver);
        eyeGestureIntent = null;
        eyeGestureContext = null;
        gestureInfo = null;
    }

}

下面是 list 文件

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

    <uses-permission android:name="com.google.android.glass.permission.DEVELOPMENT" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainFunct"
            android:icon="@drawable/ic_glass_logo"
            android:label="@string/title_activity_main_funct" >
            <intent-filter>
                <action android:name="com.google.android.glass.action.VOICE_TRIGGER" />
            </intent-filter>
            <meta-data
                android:name="com.google.android.glass.VoiceTrigger"
                android:resource="@xml/voice_trigger" />
        </activity>

        <receiver android:name="com.inno.inno.glassplugin.EyeGesture">
            <intent-filter>
                <action android:name="com.google.android.glass.action.EYE_GESTURE" />
            </intent-filter>
        </receiver>
    </application>

</manifest>

问题是动态注册时没有调用“onReceive”。我必须以动态方式执行此操作。以下是不是工作代码的代码。

public class EyeGesture extends Activity {
    //Eye Gesture
    IntentFilter eyeGestureIntentFilter;
    Context eyeGestureContext;
    BroadcastReceiver broadcastReceiver;


    public  EyeGesture(){
        Log.e("CONSTRUCTOR ", "");
        eyeGestureContext = MainFunct.getCurrentContext();
        eyeGestureIntentFilter = new IntentFilter("com.google.glass.action.EYE_GESTURE");
        eyeGestureIntentFilter.setPriority(1000);
        startRunning();
    }

    void startRunning(){
        eyeGestureContext.registerReceiver(new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                Log.e("Received ", " Something");
            }
        },eyeGestureIntentFilter);
    }


    @Override
    public  void onResume(){
        super.onResume();
    }

    @Override
    public  void  onPause(){
        super.onPause();
        unregisterReceiver(broadcastReceiver);
    }
    public void stopEyeListening() {
        eyeGestureContext.unregisterReceiver(broadcastReceiver);
        eyeGestureIntentFilter = null;
        eyeGestureContext = null;
    }

}

此外，我不想从此类扩展 BroadcastReceiver。如果动态注册，为什么我没有收到任何东西。我还从 list 中删除了以下行:

 <receiver android:name="com.inno.inno.glassplugin.EyeGesture">
                <intent-filter>
                    <action android:name="com.google.android.glass.action.EYE_GESTURE" />
                </intent-filter>
 </receiver>

但还是不行。没有错误或异常抛出。我做错了什么？

Answer 1

您是否使用了明确的 Intent ？似乎动态注册的广播接收器无法接收显式 Intent 。隐式 Intent 起作用。供引用:http://streamingcon.blogspot.com/2014/04/dynamic-broadcastreceiver-registration.html

如果问题不是明确的 Intent ，但如果您将 LocalBroadcastManager 用于 sendBroadcast，那么请确保 registerReceiver 也被称为 LocalBroadcastManager 而不是 Context