[英]Android Push Notification Service
Currently I have a Spring backend and I got a websocket on my android app which is listening for changes. 目前,我有一个Spring后端,并且我的android应用上有一个websocket,正在监听更改。 If there are changes the new data is being added to my app layout.
如果有更改,新数据将添加到我的应用程序布局中。 Now I want to notificate the user when there is a change but the app is not running.
现在,我想在发生更改但应用未运行时通知用户。
After reading some articles I found out, that this could be done by GCM (FCM). 阅读一些文章后,我发现可以由GCM(FCM)完成。 But I dont want to change my backend just because of this.
但是我不想仅仅因为这个而改变我的后端。 So my question(s) :
所以我的问题是:
How can I maintain the WebSocket connection, even when the app is not running ? 即使应用未运行,如何保持WebSocket连接?
If Services are the solution - how can I pass the WebSocket instance from Activity to Service ? 如果服务是解决方案,如何将WebSocket实例从Activity传递给Service?
It would really help me out if someone could give me some ideas. 如果有人可以给我一些想法,那将真的帮助我。 Thanks for your help :)
谢谢你的帮助 :)
If you want to implement a background running service you will need to create a foreground service . 如果要实现后台运行服务,则需要创建前台服务 。 Because Google limited the background execution on Android O.
因为Google限制了Android O的后台执行。
You can handle sockets in onStartCommand method: 您可以在onStartCommand方法中处理套接字:
public class SocketService extends Service {
...
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
try {
WebSocketClient client = new WebSocketClient(new URI("http://myserver.hu")) {
@Override
public void onOpen(ServerHandshake handshakedata) {
}
@Override
public void onMessage(String message) {
}
@Override
public void onClose(int code, String reason, boolean remote) {
}
@Override
public void onError(Exception ex) {
}
}
} catch (URISyntaxException e) {
e.printStackTrace();
}
return START_STICKY;
}
}
But I think the FCM is better choice for push messaging. 但是我认为FCM是推送消息的更好选择。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.