摘要：
今天要说的是RelativeLayout。RelativeLayout相对于LinearLayout的主要不同点在于它需要一个参照物。我们先来看一下官方对这个布局的解释： RelativeLayoutis a view group that displays child views in relative positions. The position of each view can be specified as relative to sibling elements (such as to the left-of or below another view) or in positi. 阅读全文