有没有人可以帮助我提供一个使用 Google Cloud Messaging for Android 从 gcm 接收消息的工作示例。我已经尝试了两种方法（帮助库和 GoogleCloudMessaging 类），但似乎没有任何效果。我正在使用显示以下内容的 PHP 脚本：
多播 ID：5.2108110103215E+18 成功处理的消息数：1 处理错误的消息数：0 规范 ID：0
所以显然一切都很好。我可以通过两种方式注册设备，使用帮助程序库 (gcm.jar) 和使用 GoogleCloudMessaging 类。问题是我通过 PHP 发送的消息无法到达，或者至少我不知道如何正确处理它。这是我清单中的权限和接收者：
<permission android:name="com.example.gcm.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.gcm.permission.C2D_MESSAGE" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<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="android.permission.USE_CREDENTIALS" />
<uses-permission android:name="android.permission.READ_OWNER_DATA" />
<receiver
android:name="com.google.android.gcm.GCMBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<!-- Receives the actual messages. -->
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<!-- Receives the registration id. -->
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
<category android:name="com.example.gcm" />
</intent-filter>
</receiver>
<service android:name=".GCMIntentService" />
最后是服务类
public class GCMIntentService extends GCMBaseIntentService {
private static final String PROJECT_ID = "49XXXXXXXX6";
private static final String TAG = "GCM Intent Service";
public GCMIntentService()
{
super(PROJECT_ID);
Log.d(TAG, "GCMIntentService init");
}
@Override
protected void onError(Context ctx, String sError) {
Log.d(TAG, "Error: " + sError);
}
@Override
protected void onMessage(Context ctx, Intent intent) {
Log.d(TAG, "Message Received");
String message = intent.getStringExtra("message");
sendGCMIntent(ctx, message);
}
private void sendGCMIntent(Context ctx, String message) {
Intent broadcastIntent = new Intent();
broadcastIntent.setAction("GCM_RECEIVED_ACTION");
broadcastIntent.putExtra("gcm", message);
ctx.sendBroadcast(broadcastIntent);
}
@Override
protected void onRegistered(Context ctx, String regId) {
Log.d(TAG, regId);
// Notify main UI to update registration status
Intent registrationIntent = new Intent();
registrationIntent.setAction("registered");
registrationIntent.putExtra("regId", regId);
sendBroadcast(registrationIntent);
}
@Override
protected void onUnregistered(Context ctx, String regId) {
//...
}
}
这是使用 GoogleCloudMessaging 类时的代码（我将清单更改为使用自定义接收器）：
public class GCMBroadcastReceiver extends BroadcastReceiver {
private static final String TAG = "GCM Receiver";
public static final int NOTIFICATION_ID = 1;
private NotificationManager mNotificationManager;
private Context ctx;
@Override
public void onReceive(Context context, Intent intent) {
Log.d(TAG, "Message received");
GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(context);
ctx = context;
String messageType = gcm.getMessageType(intent);
if (GoogleCloudMessaging.MESSAGE_TYPE_SEND_ERROR.equals(messageType)) {
sendNotification("Send error: " + intent.getExtras().toString());
}
else if (GoogleCloudMessaging.MESSAGE_TYPE_DELETED
.equals(messageType)) {
sendNotification("Deleted messages on server: "
+ intent.getExtras().toString());
}
else {
sendNotification("Received: " + intent.getExtras().toString());
}
setResultCode(Activity.RESULT_OK);
}
// Put the GCM message into a notification and post it.
private void sendNotification(String msg) {
mNotificationManager = (NotificationManager) ctx
.getSystemService(Context.NOTIFICATION_SERVICE);
PendingIntent contentIntent = PendingIntent.getActivity(ctx, 0,
new Intent(ctx, MainActivity.class), 0);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
ctx).setSmallIcon(R.drawable.ic_launcher_temp)
.setContentTitle("GCM Notification")
.setStyle(new NotificationCompat.BigTextStyle().bigText(msg))
.setContentText(msg);
mBuilder.setContentIntent(contentIntent);
mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
}
}
问题是一切似乎都很好，但消息永远不会到达。有任何想法吗？？提前致谢。