android 关闭多点触控_android的多点触控问题

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#android 关闭多点触控

在Android程序中，尝试实现多点触控功能时遇到问题，当第二个手指按下屏幕时程序崩溃。错误信息显示pointerIndex超出范围。问题可能出在MotionEvent的动作处理上，需要检查ACTION_POINTER_DOWN和ACTION_MOVE等事件处理是否正确。

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relativeLayout.setOnTouchListener(new OnTouchListener() {

@Override

public boolean onTouch(View v, MotionEvent event) {

// TODO Auto-generated method stub

int pointerCount = event.getPointerCount();

int pointerId = 0;

int action = event.getAction();

if (pointerCount>1) {

Toast.makeText(FlymouseTouch.this, "滑动模式", Toast.LENGTH_SHORT).show();

int moreaction = event.getActionMasked();

switch (moreaction) {

case MotionEvent.ACTION_POINTER_DOWN:

x1 = event.getX(1);

y1 = event.getY(1);

x2 = event.getX(2);

y2 = event.getY(2);

break;

case MotionEvent.ACTION_MOVE:

mx1 = event.getX(1);

my1 = event.getY(1);

mx2 = event.getX(2);

my2 = event.getY(2);

float cx1 = mx1-x1;

float cy1 = my1-y1;

float cx2 = mx2-x2;

float cy2 = my2-y2;

NetUtils.SendTouch("appkey", MotionEvent.ACTION_MOVE, cx2, cy2, 6);

break;

case MotionEvent.ACTION_POINTER_UP:

float supx = event.getX(2);

float supy = event.getY(2);

NetUtils.SendTouch("appkey", MotionEvent.ACTION_POINTER_2_UP, supx, supy, 6);

break;

}

这是代码当我运行的时候第二个手指一放到屏幕上程序就奔溃了报错信息如下

04-11 16:57:43.938: E/InputEventReceiver(7604): Exception dispatching input event.

04-11 16:57:43.939: E/MessageQueue-JNI(7604): Exception in MessageQueue callback: handleReceiveCallback

04-11 16:57:43.943: E/MessageQueue-JNI(7604): java.lang.IllegalArgumentException: pointerIndex out of range

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.MotionEvent.nativeGetAxisValue(Native Method)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.MotionEvent.getX(MotionEvent.java:1981)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at com.example.shoubing.FlymouseTouch$2.onTouch(FlymouseTouch.java:108)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.View.dispatchTouchEvent(View.java:7305)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2253)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1950)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2259)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1964)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2259)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1964)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2259)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1964)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2259)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1964)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1970)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1420)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.app.Activity.dispatchTouchEvent(Activity.java:2428)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1918)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.View.dispatchPointerEvent(View.java:7506)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3654)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3579)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4849)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4809)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4965)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:179)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.os.MessageQueue.nativePollOnce(Native Method)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.os.MessageQueue.next(MessageQueue.java:128)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.os.Looper.loop(Looper.java:151)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at android.app.ActivityThread.main(ActivityThread.java:5370)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at java.lang.reflect.Method.invokeNative(Native Method)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at java.lang.reflect.Method.invoke(Method.java:525)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)

04-11 16:57:43.943: E/MessageQueue-JNI(7604): at dalvik.system.NativeStart.main(Native Method)

这是什么情况啊