摘要：
有的时候想让一个view出现在另一个view的上面，可以这样：You can't use a LinearLayout for this, but you can use a FrameLayout. In a FrameLayout, the z-index is defined by the order in which the items are added, for example: <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layou 阅读全文
