Question

我正在使用“Web套接字”测试聊天服务

代码不会出错。但是，当我在应用程序中午餐时，它甚至无法启动

错误

06-10 16:59:22.420: E/AndroidRuntime(10814): FATAL EXCEPTION: main
06-10 16:59:22.420: E/AndroidRuntime(10814): java.lang.RuntimeException: Unable to resume activity {com.websocketchat_test/com.websocketchat_test.WebsocketChat}: android.os.NetworkOnMainThreadException
06-10 16:59:22.420: E/AndroidRuntime(10814):    at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2466)
06-10 16:59:22.420: E/AndroidRuntime(10814):    at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2494)
06-10 16:59:22.420: E/AndroidRuntime(10814):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2008)
06-10 16:59:22.420: E/AndroidRuntime(10814):    at android.app.ActivityThread.access$600(ActivityThread.java:123)
06-10 16:59:22.420: E/AndroidRuntime(10814):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1169)

我的主要代码在这里..

public class WebsocketChat extends Activity implements View.OnClickListener{

private static String SERVER_HOST = "10.0.0.1";

private WebSocket websocket;
private EditText messageEditText;
private TextView logsTextView;

@Override
public void onCreate(Bundle savedInstanceState) {       
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    messageEditText = (EditText)this.findViewById(R.id.messageEditText);
    logsTextView = (TextView)this.findViewById(R.id.logsTextView);

    try {
        URI url  = new URI("ws://" + SERVER_HOST + "/");
        websocket = new WebSocketConnection(url);

        websocket.setEventHandler(new WebSocketEventHandler() {
            Handler handler = new Handler();

            public void onOpen() {
                updateLog("connected.");
            }

            public void onMessage(final WebSocketMessage message) {
                handler.post(new Runnable() {
                    public void run() {
                        updateLog(message.getText().trim());
                    }
                });
            }

            public void onClose() {
                updateLog("closed");
            }
        });

        View sendButton = this.findViewById(R.id.sendButton);
        sendButton.setOnClickListener(this);

    } catch (WebSocketException wse) {
        wse.printStackTrace();
    } catch (URISyntaxException use) {
        use.printStackTrace();
    }
} 

@Override
public void onResume() {
    super.onResume();

    try {
        websocket.connect();
    } catch (WebSocketException wse) {
        wse.printStackTrace();
    }
}

public void onClick(View view) {
    try {
        websocket.send(messageEditText.getText().toString());
        messageEditText.setText("");
    } catch (WebSocketException wse) {
        wse.printStackTrace();
    }
}

private void updateLog(String message) {
    logsTextView.setText("> " + message + "\n" + logsTextView.getText());
}

}

我不知道为什么会这样。我确实添加了互联网许可.. 任何建议都可以。请回复。

Answer 1

最近的Android版本不允许主/ UI线程上的任何网络活动。您可以查看AutobahnAndroid - 一个Android / Java WebSocket实现，它可以在后台线程上完成所有网络连接。

披露：我是Autobahn的原作者，并为Tavendo工作。

android.os.NetworkOnMainThreadException - Web Socket

1 个答案: