Android的圆环的控件，RingPercentView自定义控件，可以复用的圆环-Android control ring, Ring Percent View custom control, you can reuse ring

安卓自定义View，纯JAVA实现View的属性，用到了TypedArray(Android custom View, pure JAVA View attributes, using TypedArray)

Android 自定义 View 绘图基础 控件的测量可以说是固定写法，原生的View只支持EXACTLY的测量模式，我们自定义的控件可以重写onMeasure方法(The measure of a control can be said to be a fixed writing method, and the native View only supports the EXACTLY measurement mode, and our custom controls can rewrite

懂点面向对象语言知识的都知道：封装，继承和多态，这是面向对象的三个基本特征，所以在自定义View的时候，最简单的方法就是继承现有的View(Know everything about object oriented language knowledge: encapsulation, inheritance and polymorphism are three basic characteristics of object-oriented. Therefore, the simplest wa

基于java语言的 android平台仪表盘自定义view效果(The custom view effect of Android platform dashboard based on Java language)