Android RectF類的構造函數參數說明

Android RectF類的構造函數參數說明：

以下是API中的說明：

public RectF (float left, float top, float right, float bottom)

Added in  API level 1

Create a new rectangle with the specified coordinates. Note: no range checking is performed, so the caller must ensure that left <= right and top <= bottom.

Parameters

left	The X coordinate of the left side of the rectangle
top	The Y coordinate of the top of the rectangle
right	The X coordinate of the right side of the rectangle
bottom	The Y coordinate of the bottom of the rectangle

比如new一個RecF類：

RectF rf1 = new RectF(100，100,200,200);

則在螢幕中的位置示意圖為：