Android 在GCMBasEventService中显示祝酒词

我正在尝试实现一个推送通知客户端。我想在onMessage（上下文arg0，意图arg1）函数中显示一个toast

这是我的代码：

    public class GCMIntentService extends GCMBaseIntentService {
static Context c;
@SuppressWarnings("hiding")
private static final String TAG = "GCMIntentService";

public GCMIntentService() {
    super("717816998404");
    c = this.getBaseContext();
}

/**
 * Issues a notification to inform the user that server has sent a message.
 */

@Override
protected void onError(Context arg0, String arg1) {
    // TODO Auto-generated method stub

}

@Override
protected void onMessage(Context arg0, Intent arg1) {
    Log.d("GCM", "RECIEVED A MESSAGE");
    Log.d("GCM", "RECIEVED A MESSAGE");
    Log.d("GCM", "RECIEVED A MESSAGE");
    Log.d("GCM", "RECIEVED A MESSAGE");
    Log.d("GCM", "RECIEVED A MESSAGE");
    Log.d("GCM", "RECIEVED A MESSAGE");
    Log.d("GCM", "RECIEVED A MESSAGE");
    String str =arg1.getExtras().getString("PVAL");

    Log.i("PVAL",str);
    // I want to display a toast here

}

@Override
protected void onRegistered(Context arg0, String arg1) {
    // TODO Auto-generated method stub
    Log.i("TEST", arg1);
    Log.e("TEST", arg1);

}

@Override
protected void onUnregistered(Context arg0, String arg1) {
    // TODO Auto-generated method stub

}

}

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我想知道如何显示收到的消息，我正在尝试显示一个祝酒词以检查消息

在onMessage方法中添加toast创建怎么样？像这样：

@Override
protected void onMessage(Context arg0, Intent arg1) {
   String str = arg1.getExtras().getString("PVAL");
   Toast.makeText(arg0, str, Toast.LENGTH_LONG).show();
}

如果这不起作用，那么遵循GCM库中捆绑的演示示例。演示示例在主活动中使用BroadcastReceiver，接收器在GCM传入消息上显示一条对话框消息。您可以将对话框显示改为toast显示。

尝试以下操作：

Handler h = new Handler(Looper.getMainLooper());
       h.post(new Runnable(){

            public void run() {
                // TODO Auto-generated method stub
            Toast.makeText(arg0, arg1.getStringExtra("message"), Toast.LENGTH_LONG).show();
    }         
        });

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例如，创建新的意图，但不允许使用当前打开的意图的任何想法处理问题？