ScrollView中如果多个EditText，在某个EditText失去焦点时，会自动切换焦点到下一个EditText。
如下为ScrollView的的焦点分发函数
/**
* When looking for focus in children of a scroll view, need to be a little
* more careful not to give focus to something that is scrolled off screen.
*
* This is more expensive than the default {@link android.view.ViewGroup}
* implementation, otherwise this behavior might have been made the default.
*/
@Override
protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect)
{
// convert from forward / backward notation to up / down / left / right
// (ugh).
if (direction == View.FOCUS_FORWARD)
{
direction = View.FOCUS_DOWN;
}
else if (direction == View.FOCUS_BACKWARD)
{
direction = View.FOCUS_UP;
}
final View nextFocus = previouslyFocusedRect == null ? FocusFinder.getInstance().findNextFocus(this, null, direction) : FocusFinder.getInstance()
.findNextFocusFromRect(this, previouslyFocusedRect, direction);
if (nextFocus == null)
{
return false;
}
if (isOffScreen(nextFocus))
{
return false;
}
return nextFocus.requestFocus(direction, previouslyFocusedRect);
}
如果不需要该效果，继承ScrollView并重写该方法即可，取消焦点时就不会自动分发
@Override
protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) {
return true;
}
