6

我想完成以下工作：

I have two buttons. When first button is pressed,
it will fire onTouchEvent on second button, thus pressing second button.

以下是触发事件的代码摘录：

int test1[] = new int[2];
button2.getLocationInWindow(test1);   //--->getting coordinates of second button
Instrumentation m_Instrumentation = new Instrumentation();
//firing event
m_Instrumentation.sendPointerSync(MotionEvent.obtain(android.os.SystemClock.uptimeMillis(),android.os.SystemClock.uptimeMillis(),MotionEvent.ACTION_DOWN,test1[0]+10, test1[1]+10, 0));

注意：我使用 genymotion 模拟器。

错误日志：

07-08 12:47:38.743: E/InputEventReceiver(6849): Exception dispatching input event.
07-08 12:47:38.743: E/MessageQueue-JNI(6849): Exception in MessageQueue callback: handleReceiveCallback
07-08 12:47:38.743: E/MessageQueue-JNI(6849): java.lang.RuntimeException: This method can not be called from the main application thread
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.app.Instrumentation.validateNotAppThread(Instrumentation.java:1651)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.app.Instrumentation.sendPointerSync(Instrumentation.java:933)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at com.example.touchtest1.MainActivity.fireEvent(MainActivity.java:55)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at com.example.touchtest1.MainActivity$MyTouchListener.onTouch(MainActivity.java:75)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.view.View.dispatchTouchEvent(View.java:7701)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2068)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1515)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.app.Activity.dispatchTouchEvent(Activity.java:2458)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.support.v7.app.ActionBarActivityDelegateICS$WindowCallbackWrapper.dispatchTouchEvent(ActionBarActivityDelegateICS.java:260)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2016)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.view.View.dispatchPointerEvent(View.java:7886)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at  android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3954)
07-08 12:47:38.743: E/MessageQueue-JNI(6849):   at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3833)

但是，它并没有按预期进行。哪里可能有问题？

带着敬意

4

2 回答 2

3

根据本文档底部的错误和摘录，您似乎无法在主线程（换句话说，UI 线程）上运行它。

一个可能的解决方案是在另一个线程中运行它。它看起来像这样：

int test1[] = new int[2];
button2.getLocationInWindow(test1);   //--->getting coordinates of second button
final Instrumentation m_Instrumentation = new Instrumentation();
//firing event

new Thread(new Runnable() {
    @Override
    public void run() {
        m_Instrumentation.sendPointerSync(MotionEvent.obtain(
               android.os.SystemClock.uptimeMillis(),
               android.os.SystemClock.uptimeMillis(),
               MotionEvent.ACTION_DOWN,test1[0]+10, test1[1]+10, 0));
    }
}).start();

请注意，我将您更改m_Instrumentation为final变量，以便可以在不同的线程中使用它。

于 2014-07-08T13:15:48.370 回答
0

检测不能在主 (UI) 线程上工作。

您可以尝试实现一个可以在后台为您完成工作的 AsyncTask 类。实现后，您只需要从您的类中的方法调用它即可；

 private void CREATE_EVENT()
 {
    long action_time = SystemClock.uptimeMillis();

    //MotionEvent.obtain(long downTime, long eventTime, int action, float x, float y, int metaState);
    MotionEvent motion_event = MotionEvent.obtain(action_time, action_time, MotionEvent.ACTION_DOWN, 250, 150, 0); 

    new INJECT_EVENTS().execute(motion_event);
  }

 public class INJECT_EVENTS extends AsyncTask<MotionEvent, MotionEvent, MotionEvent>
 {
    @Override
    protected MotionEvent doInBackground(MotionEvent ... event) {

        Instrumentation inject_event = new Instrumentation();
        event[0].recycle();
        inject_event.sendPointerSync(event[0]);
        Log.i("TEST", event[0].toString() + " __________________________EVENT CREATED!");
        return null;
    }
 }
于 2015-06-11T14:21:36.270 回答