Question

我正在尝试实施GCM。除了只在应用程序运行时才调用onMessageReceived（）方法，一切正常。

我搜索了解决方案，但我找不到与我匹配的案例。我的GCM请求主体仅包含＆＃34; to＆＃34;和＆＃34;数据＆＃34;部分，而不是＆＃34;通知＆＃34;一部分。

这是发送给GCM的请求正文：

{"data":{"title":"Test","message":"Test Message"},"to":"ffl3Q260K8E:APA91bG90Ra_CyXdmB4ztcCXYKEMKFliZ_MVpkqYnzUW2Xizcem4iknSt9guKDeEbWYl2YwwEKa7kKVllE0mBRzUOGhO5jJfAM6vuzisq3qqe_hJ1Dy-mpFQat4_ErfKRKRQOJvhKi4q"}

这是我的GcmListenerService：

public class MyGcmListenerService extends GcmListenerService {

    private static final String TAG = "MyGcmListenerService";

    @Override
    public void onMessageReceived(String from, Bundle data) {
        String message = data.getString("message");
        Log.d(TAG, "From: " + from);
        Log.d(TAG, "Message: " + message);

        sendNotification(message);
    }

    private void sendNotification(String message) {
        Intent intent = new Intent(this, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
                PendingIntent.FLAG_ONE_SHOT);

        Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.ic_app_icon)
                .setContentTitle("GCM Message")
                .setContentText(message)
                .setAutoCancel(true)
                .setSound(defaultSoundUri)
                .setContentIntent(pendingIntent);

        NotificationManager notificationManager =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
    }
}

这是清单文件：

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

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

    <uses-permission android:name="android.permission.WAKE_LOCK" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <receiver
            android:name="com.google.android.gms.gcm.GcmReceiver"
            android:exported="true"
            android:permission="com.google.android.c2dm.permission.SEND" >
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
                <category android:name="com.example.demoapp" />
            </intent-filter>
        </receiver>
        <service
            android:name=".services.MyGcmListenerService"
            android:exported="false" >
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
            </intent-filter>
        </service>
        <service
            android:name=".services.MyInstanceIDListenerService"
            android:exported="false">
            <intent-filter>
                <action android:name="com.google.android.gms.iid.InstanceID" />
            </intent-filter>
        </service>
        <service android:name=".services.RegistrationIntentService"/>
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>

Answer 1

在您的Android Manifest中，接收者的<category android:name="com.example.gcm" />标记中的类别名称<intent-filter>必须与您的包名称相同。因此，将com.example.gcm替换为您在清单中声明的包名称。

这将允许您的接收器在应用未运行时接收gcm消息。

Answer 2

确保您的有效负载在“数据”旁边也有“通知”。当应用程序处于后台时，邮件将发送到邮件托盘。

像这个例子

{
    "to" : "APA91bHun4MxP5egoKMwt2KZFBaFUH-1RYqx...",
    "notification" : {
      "body" : "great match!",
      "title" : "Portugal vs. Denmark",
      "icon" : "myicon"
    },
    "data" : {
      "Nick" : "Mario",
      "Room" : "PortugalVSDenmark"
    }
  }

请在此处参阅更多信息：https://developers.google.com/cloud-messaging/concept-options。

仅在应用程序运行时调用GcmListenerService.onMessageReceived（）

2 个答案: