A.DrawRoundRect B.DrawRect C.DrawRound D.SetRoundRect
A.setWidth B.setStroke C.setStrokeWidth D.width=
A.取值match_parent表示與上級視圖一樣尺寸 B.取值wrap_content表示按照自身內(nèi)容的實際尺寸 C.weight權重 D.直接指定了具體的dp數(shù)值