解决Item控件抢占焦点

心已赠人 2022-03-28 08:29 245阅读 0赞

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

![102053508797064.png][]

![102055536447659.png][]

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;

[102053508797064.png]: /images/20220328/3e99c817b39d48dd8f5729771afecf88.png
[102055536447659.png]: /images/20220328/dd15d9bb995b45b6b0901bc60621aa04.png