android 自定义控件——（一）圆角按钮

----------------------------------矩形或圆角类型（源代码下有属性解释）-----------------------------------------------------

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" alt="" width="322" height="117" />

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="rectangle">

    <solid android:color="#4ec5ff" />
    <padding
        android:bottom="12dp"
        android:left="12dp"
        android:right="12dp"
        android:top="12dp" />
    <corners android:radius="10dp" />
    <stroke
        android:width="2dp"
        android:color="#ffffff"
        android:dashGap="270dp" />

</shape>
二、style 样式：

<style name="rectangle">
    <item name="android:layout_width">match_parent</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/buttonstyle</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
        android:id="@+id/button"
        style="@style/rectangle"
        android:text="@string/btn1" />

</RelativeLayout>

----------------------------------矩形或圆角类型-----------------------------------------------------

----------------------------------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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