GCM BroadcastReceiver fired only when app is running or running at background

问题

I've implemented GCM service and it all works fine but when I'm supposed to recieve a notification after I closed the app (By long click at home button and then at the garbage icon - Galaxy S III), I don't recieve it.

Here's my Manifest.xml:

  <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.proj"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="12"
        android:targetSdkVersion="18" />
    <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"/>
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
    <uses-permission android:name="android.permission.CALL_PHONE" />
    <!-- The following two permissions are not required to use
         Google Maps Android API v2, but are recommended. -->
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
    <permission android:name="com.example.proj.permission.C2D_MESSAGE"
        android:protectionLevel="signature" />
    <uses-permission android:name="com.example.proj.permission.C2D_MESSAGE" />


    <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true"/>
    <application
        android:allowBackup="true"
        android:icon="@drawable/projicon"
        android:label="@string/app_name"
        android:theme="@style/Theme.Sherlock"
        android:uiOptions="splitActionBarWhenNarrow" >
        <activity
            android:name="com.example.proj.FbActivity"
            android:label="@string/app_name"
            android:configChanges="keyboardHidden|orientation|screenSize"
            android:uiOptions="splitActionBarWhenNarrow">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
          <meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version" />
          <meta-data
        android:name="com.google.android.maps.v2.API_KEY"
        android:value="APIKEY"/>
        <meta-data android:name="com.facebook.sdk.ApplicationId" android:value="@string/app_id"/>
        <activity android:name="com.facebook.LoginActivity"></activity>
        <activity android:name="MainActivity"
            android:configChanges="keyboardHidden|orientation|screenSize"></activity>

        <receiver
            android:name="com.example.proj.GcmBroadcastReceiver"
            android:permission="com.google.android.c2dm.permission.SEND" >
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
                <category android:name="com.example.proj" />
            </intent-filter>
        </receiver>
        <service android:name="com.example.proj.GcmIntentService" />
    </application>
</manifest>

GcmBroadcastReceiver.java:

public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // Explicitly specify that GcmIntentService will handle the intent.
        ComponentName comp = new ComponentName(context.getPackageName(),
                GcmIntentService.class.getName());
        // Start the service, keeping the device awake while it is launching.
        startWakefulService(context, (intent.setComponent(comp)));
        setResultCode(Activity.RESULT_OK);
    }

}

I'm not sure if by closing the app by the way I did kills the app proccess or it still should be running at the background and recieve those masseges.

回答1:

I had the same problem, and I found out I made a mistake in the manifest file:

<permission android:name="com.example.gcm.permission.C2D_MESSAGE"
        android:protectionLevel="signature" />
    <uses-permission android:name="com.example.gcm.permission.C2D_MESSAGE" />

should be:

<permission android:name="<your app package>.permission.C2D_MESSAGE"
    android:protectionLevel="signature" />
<uses-permission android:name="<your app package>.permission.C2D_MESSAGE" />

where the app package is the package that contains the class that extends Application (and should be pointed in the manifest file).

After fixing this, I've been able to force close my app and still receive push notifications via GCM.

来源：https://stackoverflow.com/questions/21707904/gcm-broadcastreceiver-fired-only-when-app-is-running-or-running-at-background