http://www.imooc.com/learn/372

 

 

在抢占焦点的控件加上

方法一:

　　android:focusable="false"　　

方法二:

　　在外界布局上

　　android:descendantFocusability="blocksDescendants"

 

原因参考

android.widget.AbsListView

@Override

public boolean onTouchEvent(MotionEvent ev) {

　　

case MotionEvent.ACTION_UP: {

switch (mTouchMode) {

case TOUCH_MODE_DOWN:

case TOUCH_MODE_TAP:

case TOUCH_MODE_DONE_WAITING:

final int motionPosition = mMotionPosition;

final View child = getChildAt(motionPosition - mFirstPosition);

if (child != null && !child.hasFocusable()) {

if (mTouchMode != TOUCH_MODE_DOWN) {

child.setPressed(false);

}

if (mPerformClick == null) {

mPerformClick = new PerformClick();

}

final AbsListView.PerformClick performClick = mPerformClick;

performClick.mChild = child;

performClick.mClickMotionPosition = motionPosition;

performClick.rememberWindowAttachCount();

mResurrectToPosition = motionPosition;

if (mTouchMode == TOUCH_MODE_DOWN || mTouchMode == TOUCH_MODE_TAP) {

final Handler handler = getHandler();

if (handler != null) {

handler.removeCallbacks(mTouchMode == TOUCH_MODE_DOWN ?

mPendingCheckForTap : mPendingCheckForLongPress);

}

mLayoutMode = LAYOUT_NORMAL;

if (!mDataChanged && mAdapter.isEnabled(motionPosition)) {

mTouchMode = TOUCH_MODE_TAP;

setSelectedPositionInt(mMotionPosition);

layoutChildren();

child.setPressed(true);

positionSelector(child);

setPressed(true);

if (mSelector != null) {

Drawable d = mSelector.getCurrent();

if (d != null && d instanceof TransitionDrawable) {

((TransitionDrawable) d).resetTransition();

}

}

postDelayed(new Runnable() {

public void run() {

child.setPressed(false);

setPressed(false);

if (!mDataChanged) {

post(performClick);

}

mTouchMode = TOUCH_MODE_REST;

}

}, ViewConfiguration.getPressedStateDuration());

} else {

mTouchMode = TOUCH_MODE_REST;

}

return true;

} else if (!mDataChanged && mAdapter.isEnabled(motionPosition)) {

post(performClick);

}

}

mTouchMode = TOUCH_MODE_REST;

break;