Java Android正在使用api 10，但不是16

UDP实现：

@Override
protected Void doInBackground(Void... params) {
    try {

        this.clientSocket = new DatagramSocket();
            this.IPAddress = InetAddress.getByName("10.0.0.2");
            this.sendData = new byte[1024];

    }
    catch (UnknownHostException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return null;
}

        public void mouse(int x, int y) {

            try {

                  String sentence = "{" + x + "," + y + "}";
                  this.sendData = sentence.getBytes();
                  DatagramPacket sendPacket = new DatagramPacket(this.sendData, this.sendData.length, this.IPAddress, 9871);
                  this.clientSocket.send(sendPacket);

            } catch (UnknownHostException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

        }

@Override
public boolean onTouchEvent(MotionEvent event) {
    Log.v("tests", "test");
    if(event.getAction() == MotionEvent.ACTION_DOWN ){
        oldX = (int) event.getX();
        oldY = (int) event.getY();
    }
    else if(event.getAction() == MotionEvent.ACTION_MOVE ){
        newX = (int) event.getX();
        newY = (int) event.getY();

        xDiff = newX - oldX;
        yDiff = newY - oldY;
        Log.v("xdiff", ""+xDiff);
        Log.v("ydiff", ""+yDiff);
        oldX = newX;
        oldY = newY;
        a.mouse(xDiff, yDiff);
    }
    else if(event.getAction() == MotionEvent.ACTION_UP){

    }
    return true;
}

python udp服务：

import socket

PORT = 9871
IP = socket.gethostbyname(socket.gethostname())

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) # UDP
sock.bind((IP, PORT))
print "Server %s" % IP

while True:
        data, addr = sock.recvfrom(1024) # buffer size is 1024 bytes
        if data:
            print "received message:", data
        else:
            print "dead"

日志：

01-07 17:18:51.509: E/InputEventReceiver(583): Exception dispatching input event.
01-07 17:18:51.517: D/AndroidRuntime(583): Shutting down VM
01-07 17:18:51.517: W/dalvikvm(583): threadid=1: thread exiting with uncaught exception (group=0x40a13300)
01-07 17:18:51.567: E/AndroidRuntime(583): FATAL EXCEPTION: main
01-07 17:18:51.567: E/AndroidRuntime(583): android.os.NetworkOnMainThreadException
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
01-07 17:18:51.567: E/AndroidRuntime(583):  at libcore.io.BlockGuardOs.sendto(BlockGuardOs.java:175)
01-07 17:18:51.567: E/AndroidRuntime(583):  at libcore.io.IoBridge.sendto(IoBridge.java:473)
01-07 17:18:51.567: E/AndroidRuntime(583):  at java.net.PlainDatagramSocketImpl.send(PlainDatagramSocketImpl.java:182)
01-07 17:18:51.567: E/AndroidRuntime(583):  at java.net.DatagramSocket.send(DatagramSocket.java:284)
01-07 17:18:51.567: E/AndroidRuntime(583):  at com.example.sockettest1.WriteToSocket.mouse(WriteToSocket.java:82)
01-07 17:18:51.567: E/AndroidRuntime(583):  at com.example.sockettest1.Mouse_test1.onTouchEvent(Mouse_test1.java:46)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.app.Activity.dispatchTouchEvent(Activity.java:2399)
01-07 17:18:51.567: E/AndroidRuntime(583):  at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1873)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.View.dispatchPointerEvent(View.java:7307)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3174)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3119)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4155)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4134)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4226)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:171)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:163)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:4205)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:4245)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.Choreographer.doCallbacks(Choreographer.java:555)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.Choreographer.doFrame(Choreographer.java:523)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.os.Handler.handleCallback(Handler.java:615)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.os.Handler.dispatchMessage(Handler.java:92)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.os.Looper.loop(Looper.java:137)
01-07 17:18:51.567: E/AndroidRuntime(583):  at android.app.ActivityThread.main(ActivityThread.java:4745)
01-07 17:18:51.567: E/AndroidRuntime(583):  at java.lang.reflect.Method.invokeNative(Native Method)
01-07 17:18:51.567: E/AndroidRuntime(583):  at java.lang.reflect.Method.invoke(Method.java:511)
01-07 17:18:51.567: E/AndroidRuntime(583):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
01-07 17:18:51.567: E/AndroidRuntime(583):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
01-07 17:18:51.567: E/AndroidRuntime(583):  at dalvik.system.NativeStart.main(Native Method)
01-07 17:18:51.637: W/ActivityManager(162):   Force finishing activity com.example.sockettest1/.Mouse_test1
01-07 17:18:51.647: W/WindowManager(162): Failure taking screenshot for (246x410) to layer 21010
01-07 17:18:51.947: I/Choreographer(162): Skipped 43 frames!  The application may be doing too much work on its main thread.
01-07 17:18:52.205: W/ActivityManager(162): Activity pause timeout for ActivityRecord{41506518 com.example.sockettest1/.Mouse_test1}
01-07 17:18:52.557: I/Choreographer(261): Skipped 41 frames!  The application may be doing too much work on its main thread.
01-07 17:18:57.049: I/InputDispatcher(162): Application is not responding: Window{4158f1a0 com.example.sockettest1/com.example.sockettest1.Mouse_test1 paused=false}.  It has been 5007.4ms since event, 5006.7ms since wait started.  Reason: Waiting because the touched window has not finished processing the input events that were previously delivered to it.
01-07 17:18:57.049: I/WindowManager(162): Input event dispatching timed out sending to com.example.sockettest1/com.example.sockettest1.Mouse_test1

现在，这段代码在ADT emulator上的API10上运行得非常好，但它在我的设备（SGS2）上崩溃，该设备运行4.1.2（API16），因此我在API16上创建了一个新的模拟器，结果与我的设备上的结果相同，因此我假设它与API兼容性有关。

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它在启动时崩溃（因为我可能在创建时执行asynctask）

正如日志所述，您正在执行NetworkOnMainThread。mouse（）方法在UI线程上运行，因此其中与网络相关的代码需要在后台线程上运行

编辑：

我不确定您是如何更新代码的，但我会尝试运行'a.mouse（xDiff，yDiff）；'使用后台线程（也可以使用AsyncTask）。您可以在活动中创建运行鼠标（）方法的可运行类：

然后在onTouchEvent中，创建一个实例并启动它，而不是调用mouse（）

Thread thread = new Thread(new updateThread(xDiff, yDiff));
thread.start();

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我已将数据传输移动到AsyncTask，但现在它确实发送了数据，但在一两秒钟后崩溃，因为当I a.execute（）时，它仍在运行01-07 17:48:35.437:E/AndroidRuntime（666）：java.lang.IllegalStateException:无法执行任务：任务已在运行。我应该如何更改代码，使其在Asynctask线程上工作而不会崩溃？

Thread thread = new Thread(new updateThread(xDiff, yDiff));
thread.start();