android 自定义控件——（四）圆形进度条

----------------------------------↓↓圆形进度条（源代码下有属性解释）↓↓-----------------------------------------------------

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" alt="" width="408" height="166" />

一、shape 样式：（在drawable新建--》new--》Drawable resource file 并把原父级标签selector改为shape ）

<?xml version="1.0" encoding="utf-8"?>

<!--把shape嵌套在rotate里面实现环形旋转-->
 <rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromDegrees="0"
    android:pivotX="50%"
    android:pivotY="50%"
    android:toDegrees="1080.0"
    >
<shape
    android:innerRadiusRatio="3"
    android:shape="ring"
    android:thicknessRatio="9"
    android:useLevel="false">
    <gradient
        android:startColor="#ffffff"
        android:endColor="#4ec5ff"
        android:type="sweep" />
</shape>
</rotate>

二、style 样式：

<style name="ring">
    <item name="android:layout_width">wrap_content</item>
    <item name="android:layout_height">wrap_content</item>
    <item name="android:indeterminateDrawable">@drawable/buttonringstyle</item>
</style>

三、Button控件调用style样式：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.ly.blogtest.MainActivity">

<ProgressBar
    style="@style/ring"
    android:id="@+id/progressBar"
 />

</RelativeLayout>

----------------------------------↑↑↑↑圆形进度条↑↑↑↑↑-----------------------------------------------------

----------------------------------↓↓↓android:shape属性指定形状↓↓↓------------------------------

rectangle: 矩形，默认的形状，可以画出直角矩形、圆角矩形、弧形等
oval: 椭圆形，用得比较多的是画正圆
line: 线形，可以画实线和虚线
ring: 环形，可以画环形进度条

----------------------------------↑↑↑android:shape属性指定形状↑↑↑------------------------------

----------------------------------↓↓↓只适用于ring的特殊属性↓↓----------------------------------

注：shape中有一些特殊属性只适用于ring：

android:innerRadius 内环的半径
android:innerRadiusRatio 浮点型，以环的宽度比率来表示内环的半径，默认为3，表示内环半径为环的宽度除以3，该值会被android:innerRadius覆盖
android:thickness 环的厚度
android:thicknessRatio 浮点型，以环的宽度比率来表示环的厚度，默认为9，表示环的厚度为环的宽度除以9，该值会被android:thickness覆盖
android:useLevel 一般为false，否则可能环形无法显示，只有作为LevelListDrawable使用时才设为true

----------------------------------↑↑↑只适用于ring的特殊属性↑↑↑----------------------------------

----------------------------------↓↓shape的属性标签↓↓-----------------------------------------

solid: 设置形状填充的颜色，只有android:color一个属性
- android:color 填充的颜色
padding: 设置内容与形状边界的内间距，可分别设置左右上下的距离
- android:left 左内间距
- android:right 右内间距
- android:top 上内间距
- android:bottom 下内间距
gradient: 设置形状的渐变颜色，可以是线性渐变、辐射渐变、扫描性渐变
- android:type 渐变的类型
  - linear 线性渐变，默认的渐变类型
  - radial 放射渐变，设置该项时，android:gradientRadius也必须设置
  - sweep 扫描性渐变
- android:startColor 渐变开始的颜色
- android:endColor 渐变结束的颜色
- android:centerColor 渐变中间的颜色
- android:angle 渐变的角度，线性渐变时才有效，必须是45的倍数，0表示从左到右，90表示从下到上
- android:centerX 渐变中心的相对X坐标，放射渐变时才有效，在0.0到1.0之间，默认为0.5，表示在正中间
- android:centerY 渐变中心的相对X坐标，放射渐变时才有效，在0.0到1.0之间，默认为0.5，表示在正中间
- android:gradientRadius 渐变的半径，只有渐变类型为radial时才使用
- android:useLevel 如果为true，则可在LevelListDrawable中使用
corners: 设置圆角，只适用于rectangle类型，可分别设置四个角不同半径的圆角，当设置的圆角半径很大时，比如200dp，就可变成弧形边了
- android:radius 圆角半径，会被下面每个特定的圆角属性重写
- android:topLeftRadius 左上角的半径
- android:topRightRadius 右上角的半径
- android:bottomLeftRadius 左下角的半径
- android:bottomRightRadius 右下角的半径
stroke: 设置描边，可描成实线或虚线。
- android:color 描边的颜色
- android:width 描边的宽度
- android:dashWidth 设置虚线时的横线长度
- android:dashGap 设置虚线时的横线之间的距离

----------------------------------↑↑shape的属性标签↑↑-----------------------------------------

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android 自定义控件——（四）圆形进度条

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