android 判断view重叠,android 判断view 是否被遮挡

public boolean isViewCovered(final View view)

{

View currentView = view;

Rect currentViewRect = new Rect();

boolean partVisible =currentView.getGlobalVisibleRect(currentViewRect);

boolean totalHeightVisible = (currentViewRect.bottom - currentViewRect.top) >= adView.getMeasuredHeight();

boolean totalWidthVisible = (currentViewRect.right - currentViewRect.left) >= adView.getMeasuredWidth();

boolean totalViewVisible = partVisible && totalHeightVisible && totalWidthVisible;

if (!totalViewVisible)//if any part of the view is clipped by any of its parents,return true

return true;

while (currentView.getParent() instanceof ViewGroup)

{

ViewGroup currentParent = (ViewGroup) currentView.getParent();

if (currentParent.getVisibility() != View.VISIBLE)//if the parent of view is not visible,return true

return true;

int start = indexOfViewInParent(currentView, currentParent);

for (int i = start + 1; i < currentParent.getChildCount(); i++)

{

Rect viewRect = new Rect();

view.getGlobalVisibleRect(viewRect);

View otherView = currentParent.getChildAt(i);

Rect otherViewRect = new Rect();

otherView.getGlobalVisibleRect(otherViewRect);

if (Rect.intersects(viewRect, otherViewRect))//if view intersects its older brother(covered),return true

return true;

}

currentView = currentParent;

}

return false;

}

private int indexOfViewInParent(View view, ViewGroup parent)

{

int index;

for (index = 0; index < parent.getChildCount(); index++)

{

if (parent.getChildAt(index) == view)

break;

}

return index;

}