Android与websocket通信(Node Websocket服务器和Android Java客户端).不要在Android 4上工作

概述我试图用作 Android客户端Websocket – weberknecht,一个线程每秒向Nodejs Websocket发送一条消息(js)： Node WebSocket Server 它在android 2或2.3.3上运行正常,但是当我在android 4上运行时,我在websocket.connect()上遇到错误; 你知道为什么或我做错了吗？ 我的代码是： public class 我试图用作 Android客户端Websocket – weberknecht,一个线程每秒向NodeJs Websocket发送一条消息(Js)： Node WebSocket Server

它在androID 2或2.3.3上运行正常,但是当我在androID 4上运行时,我在websocket.connect()上遇到错误;

你知道为什么或我做错了吗？

我的代码是：

public class MainThread extends Thread {    private boolean is_running;    private URI url = null;    private de.roderick.weberknecht.WebSocket websocket = null;    public MainThread() {        this.is_running = false;        try {            url = new URI("ws://192.168.1.88:8088/");            websocket = new WebSocketConnection(url);            websocket.setEventHandler(new WebSocketEventHandler() {                public voID onopen(){                    System.out.println("--open");                }                public voID onMessage(WebSocketMessage message){                    System.out.println("--received message: " + message.getText());                }                public voID onClose(){                    System.out.println("--close");                }            });        } catch (WebSocketException wse) {            wse.printstacktrace();  //To change body of catch statement use file | Settings | file Templates.        } catch (URISyntaxException use) {            use.printstacktrace();  //To change body of catch statement use file | Settings | file Templates.        }    }    @OverrIDe    public voID run() {        while(is_running){            try {                websocket.send("hello world");                Thread.sleep(10000);            }            catch (WebSocketException wse) {                wse.printstacktrace();            } catch (InterruptedException e) {                e.printstacktrace();              }        }    }    public voID set_running(boolean is_running) {        if(is_running == true)            try {                websocket.connect();                this.is_running = is_running;            } catch (WebSocketException e) {                System.out.println(e.toString());                //e.printstacktrace();              }    }}

和我在androID 4上得到的错误：

ERROR/AndroIDRuntime(562): FATAL EXCEPTION: main        java.lang.RuntimeException: Unable to start activity ComponentInfo{com.biskis.test.websocket/com.biskis.test.websocket.GameActivity}: androID.os.networkonmainthreadException        at androID.app.ActivityThread.performlaunchActivity(ActivityThread.java:1956)        at androID.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)        at androID.app.ActivityThread.access0(ActivityThread.java:123)        at androID.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)        at androID.os.Handler.dispatchMessage(Handler.java:99)        at androID.os.Looper.loop(Looper.java:137)        at androID.app.ActivityThread.main(ActivityThread.java:4424)        at java.lang.reflect.Method.invokeNative(Native Method)        at java.lang.reflect.Method.invoke(Method.java:511)        at com.androID.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)        at com.androID.internal.os.ZygoteInit.main(ZygoteInit.java:551)        at dalvik.system.NativeStart.main(Native Method)        Caused by: androID.os.networkonmainthreadException        at androID.os.StrictMode$AndroIDBlockGuardPolicy.onNetwork(StrictMode.java:1099)        at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)        at libcore.io.IoBrIDge.connectErrno(IoBrIDge.java:127)        at libcore.io.IoBrIDge.connect(IoBrIDge.java:112)        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)        at java.net.socket.startupSocket(Socket.java:566)        at java.net.socket.tryAllAddresses(Socket.java:127)        at java.net.socket.<init>(Socket.java:177)        at java.net.socket.<init>(Socket.java:149)        at de.roderick.weberknecht.WebSocketConnection.createSocket(WebSocketConnection.java:238)        at de.roderick.weberknecht.WebSocketConnection.connect(WebSocketConnection.java:83)        at com.biskis.test.websocket.MainThread.set_running(MainThread.java:76)        at com.biskis.test.websocket.GameActivity.onCreate(GameActivity.java:20)        at androID.app.Activity.performCreate(Activity.java:4465)        at androID.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)        at androID.app.ActivityThread.performlaunchActivity(ActivityThread.java:1920)        ... 11 more

或者您是否知道如何以更好的方式将客户端(java,androID)通信到服务器(nodeJs,websocket)？

谢谢.

解决方法@H_502_32@ 不要连接到主线程上的Websocket(即在GameActivity.onCreate中),错误就会消失.您可以使用AsyncTask在后台连接到Websocket.

通过I / O *** 作阻止主线程(并且网络访问最终是I / O *** 作)将导致(在最坏的情况下)缓慢的用户界面或AndroID杀死您的应用程序,因为它没有及时做出反应.请参阅designing for responsiveness文档.

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