android 自定义控件——（二）圆形按钮，圆形View

----------------------------------↓↓圆形按钮，圆形View（源代码下有属性解释）↓↓-----------------------------------------------------

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" alt="" width="336" height="204" />

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"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">
    <solid android:color="#4ec5ff" />
    <padding
        android:bottom="12dp"
        android:left="12dp"
        android:right="12dp"
        android:top="12dp" />
    <stroke
        android:width="1dp"
        android:color="#ffffff"
        android:dashGap="270dp" />
    <size
        android:width="100dp"
        android:height="100dp" />
</shape>

二、style 样式：

<style name="oval">
    <item name="android:layout_width">wrap_content</item>
    <item name="android:layout_height">wrap_content</item>
    <item name="android:textSize">15sp</item>
    <item name="android:textColor">#ffffff</item>
    <item name="android:background">@drawable/buttonovalstyle</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">

<Button
    style="@style/oval"
    android:text="@string/btn1"
    android:id="@+id/btnOval"
    />

</RelativeLayout>

----------------------------------↑↑↑↑圆形按钮，圆形View↑↑↑↑↑-----------------------------------------------------

----------------------------------↓↓↓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↑↑↑------------------------------

----------------------------------↓↓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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