我一直在关注设置GCM客户端应用程序教程，并试图了解他们提供的演示应用程序，但我无法理解如何使用此服务发送推送通知。 
 
 上述指南将带领我进入一个带有永不停止ProgressBar的“生成InstanceID令牌”屏幕。 该程序源代码可在此处获得： https ： //github.com/googlesamples/google-services/tree/master/android/gcm/app/src/main 
 
 使用上面的源代码后，我尝试了简单下游消息传递，这个： https ： //developers.google.com/cloud-messaging/downstream ，以便向用户发送推送。 
 
 我无法理解我应该如何使用它发送我的应用用户通知。 
 
 我有一台服务器，而且我对PHP很好，为了使用GCM向我的应用程序用户发送推送通知，还有什么要做？ 
 
 最后设法将消息传递给TextView！ 如何让它变成推动力？ 
 
public class GcmService extends GcmListenerService {

    @Override
    public void onMessageReceived(String from, Bundle data) {
        JSONObject jsonObject = new JSONObject();
        Set<String> keys = data.keySet();
        for (String key : keys) {
            try {
                jsonObject.put(key, data.get(key));
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
        try {
            sendNotification("Received: " + jsonObject.toString(5));
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onDeletedMessages() {
        sendNotification("Deleted messages on server");
    }

    @Override
    public void onMessageSent(String msgId) {
        sendNotification("Upstream message sent. Id=" + msgId);
    }

    @Override
    public void onSendError(String msgId, String error) {
        sendNotification("Upstream message send error. Id=" + msgId + ", error" + error);
    }

    private void sendNotification(final String msg) {
        Handler handler = new Handler(Looper.getMainLooper());
        handler.post(new Runnable() {
            @Override
            public void run() {
                if (MainActivity.mTextView != null) {
                    MainActivity.mTextView.setText(msg);
                }
            }
        });
    }
}

I've been following the Set Up a GCM Client App tutorial and tried to understand the demo app they provided, but I couldn't understand how to send push notification with this service.
 
The above guide leads me to a "Generating InstanceID token" screen with never-ending ProgressBar. This program source can be obtained here: https://github.com/googlesamples/google-services/tree/master/android/gcm/app/src/main
 
After using the above source code I've tried next to Simple Downstream messaging, this: https://developers.google.com/cloud-messaging/downstream in order to send push to the app users.
 
I couldn't understand how I'm supposed to send my app users notifications with it.
 
I have a server and I'm great with PHP, What is left to do in order to send push notification to my application users using the GCM?
 
Finally managed to get the message to a TextView! How do make it into push?
 
public class GcmService extends GcmListenerService {

    @Override
    public void onMessageReceived(String from, Bundle data) {
        JSONObject jsonObject = new JSONObject();
        Set<String> keys = data.keySet();
        for (String key : keys) {
            try {
                jsonObject.put(key, data.get(key));
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
        try {
            sendNotification("Received: " + jsonObject.toString(5));
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onDeletedMessages() {
        sendNotification("Deleted messages on server");
    }

    @Override
    public void onMessageSent(String msgId) {
        sendNotification("Upstream message sent. Id=" + msgId);
    }

    @Override
    public void onSendError(String msgId, String error) {
        sendNotification("Upstream message send error. Id=" + msgId + ", error" + error);
    }

    private void sendNotification(final String msg) {
        Handler handler = new Handler(Looper.getMainLooper());
        handler.post(new Runnable() {
            @Override
            public void run() {
                if (MainActivity.mTextView != null) {
                    MainActivity.mTextView.setText(msg);
                }
            }
        });
    }
}

原文：https://stackoverflow.com/questions/32932935