Android interface coordinates diagram and rect (rectangle) Brief Introduction

The coordinates of the Android interface are the starting point in the upper-left corner. The x-axis is parallel, the vertical is the y-axis, and the values are incremented. For example, as seen in:

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The Android Rect class is the area that forms a rectangle. The location of the area in the entire Android interface is controlled by Left,top,right,bottom values, and the following figure shows the meaning of these four values.

Android interface coordinates diagram and rect (rectangle) Brief Introduction