Android平臺上的API 10而不是16

Question

UDP實現：

@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; 
} 

蟒蛇UDP SERV：

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" 

的logcat：

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 

下面這段代碼工作完全正常的API10上ADT仿真器，但它在運行4.1.2（API16）的設備（SGS2）上崩潰，所以我在API16上創建了一個新仿真器，結果是sam e作爲結果在我的設備上，所以我認爲它與API兼容性有關。 它在發射時崩潰（因爲可能我執行asynctask oncreate）

Answer 1

由於日誌狀態，您正在執行NetworkOnMainThread。您的mouse（）方法在UI線程上運行，因此其中的網絡相關代碼需要在後臺線程上運行。

編輯：

我不知道你是如何更新你的代碼，但我會嘗試運行「a.mouse（x差值，yDiff）;」與後臺線程（你也可以使用AsyncTask）。您可以創建活動爲您提供運行的類運行你的鼠標（）方法：）

public class updateThread implements Runnable 
{ 
    private int x; 
    private int y; 

    public updateThread(int x, int y) 
    { 
     this.x = x 
     this.y = y 
    } 

    public void run() 
    { 
     a.mouse(x, y); 
    } 
} 

然後在的onTouchEvent，而不是調用鼠標（，創建一個實例並啓動它：

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