使用registerReceiver的C2DM接收器的动态寄存器

Question

我可以使用<receiver>我的清单中的成功注册我的Android应用程序与C2DM .但是,如果我<receiver>从清单中删除并使用上下文的registerReceiver方法注册我的接收器,则会收到SERVICE_NOT_AVAILABLE错误响应.我已经在模拟器和真实设备中重现了这种行为.

是否可以动态注册C2DM接收器？

这是我删除的清单的片段:

<receiver android:name=".service.C2DM.C2DMReceiver" android:permission="com.google.android.c2dm.permission.SEND">
  <intent-filter>
      <action android:name="com.google.android.c2dm.intent.RECEIVE" />
      <category android:name="mytestapp" />
  </intent-filter>
  <intent-filter>
      <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
      <category android:name="mytestapp" />
  </intent-filter>
</receiver>

以下是代码:

public class C2DMReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        String registration = intent.getStringExtra("registration_id");
        if (intent.getStringExtra("error") != null) {
            //TODO: Registration failed, should try again later.
            Log.e("MyTestAppC2DM", "C2DM Error = " + intent.getStringExtra("error"));
        } else if (intent.getStringExtra("unregistered") != null) {
            Log.d("MyTestAppC2DM", "C2DM Unregistered");
        } else if (registration != null) {
            Log.d("MyTestAppC2DM","C2DM registration_id = " + registration);
        } else {
            Log.w("MyTestAppC2DM", "C2DM No registration_id");
        }
    }

    public static void register(Context context){
        /* BEGIN OF DYNAMIC REGISTER */
        C2DMReceiver c2dmReceiver = new C2DMReceiver();

        IntentFilter receiveIntentFilter = new IntentFilter();
        receiveIntentFilter.addAction("com.google.android.c2dm.intent.RECEIVE");
        receiveIntentFilter.addCategory("mytestapp");
        context.registerReceiver(c2dmReceiver, receiveIntentFilter, "com.google.android.c2dm.permission.SEND", null);

        IntentFilter registrationIntentFilter = new IntentFilter();
        registrationIntentFilter.addAction("com.google.android.c2dm.intent.REGISTRATION");
        registrationIntentFilter.addCategory("mytestapp");
        context.registerReceiver(c2dmReceiver, registrationIntentFilter, "com.google.android.c2dm.permission.SEND", null);

        /*END OF DYNAMIC REGISTER*/

        Intent registrationIntent = new Intent("com.google.android.c2dm.intent.REGISTER");
        registrationIntent.putExtra("app", PendingIntent.getBroadcast(context, 0, new Intent(), 0));
        registrationIntent.putExtra("sender", "mysender@gmail.com");
        ComponentName service = context.startService(registrationIntent);
        if(service!=null){
            Log.d("MyTestAppC2DM","C2DM Registration sent");
        }else{
            Log.d("MyTestAppC2DM","C2DM Service not found");
        }   
    }
}

Answer 1

当系统发送广播时，如果应用程序在清单中声明了匹配的意图过滤器，它将启动应用程序来处理意图。由于 C2DM 的性质，动态安装广播接收器没有用，因为收到 C2DM 消息时您的应用程序可能尚未运行。如果它没有运行，则不会为动态安装的接收器启动它。