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

 <shape

     xmlns:android="http://schemas.android.com/apk/res/android"

     android:shape=["rectangle" | "oval" | "line" | "ring"]      //共有4种类型，矩形（默认）/椭圆形/直线形/环形

     // 以下4个属性只有当类型为环形时才有效

     android:innerRadius="dimension"     //内环半径

     android:innerRadiusRatio="float"    //内环半径相对于环的宽度的比例，比如环的宽度为50,比例为2.5,那么内环半径为20

     android:thickness="dimension"   //环的厚度

     android:thicknessRatio="float"     //环的厚度相对于环的宽度的比例

     android:useLevel="boolean">    //如果当做是LevelListDrawable使用时值为true，否则为false.

     <corners    //定义圆角

         android:radius="dimension"      //全部的圆角半径

         android:topLeftRadius="dimension"   //左上角的圆角半径

         android:topRightRadius="dimension"  //右上角的圆角半径

         android:bottomLeftRadius="dimension"    //左下角的圆角半径

         android:bottomRightRadius="dimension" />    //右下角的圆角半径

     <gradient   //定义渐变效果

         android:type=["linear" | "radial" | "sweep"]    //共有3中渐变类型，线性渐变（默认）/放射渐变/扫描式渐变

         android:angle="integer"     //渐变角度，必须为45的倍数，0为从左到右，90为从上到下

         android:centerX="float"     //渐变中心X的相当位置，范围为0～1

         android:centerY="float"     //渐变中心Y的相当位置，范围为0～1

         android:startColor="color"      //渐变开始点的颜色

         android:centerColor="color"     //渐变中间点的颜色，在开始与结束点之间

         android:endColor="color"    //渐变结束点的颜色

         android:gradientRadius="float"  //渐变的半径，只有当渐变类型为radial时才能使用

         android:useLevel=["true" | "false"] />  //使用LevelListDrawable时就要设置为true。设为false时才有渐变效果

     <padding    //内部边距

         android:left="dimension"

         android:top="dimension"

         android:right="dimension"

         android:bottom="dimension" />

     <size   //自定义的图形大小

         android:width="dimension"

         android:height="dimension" />

     <solid  //内部填充颜色

         android:color="color" />

     <stroke     //描边

         android:width="dimension"   //描边的宽度

         android:color="color"   //描边的颜色

         // 以下两个属性设置虚线

         android:dashWidth="dimension"   //虚线的宽度，值为0时是实线

         android:dashGap="dimension" />      //虚线的间隔

 </shape>

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

 <shape

     xmlns:android="http://schemas.android.com/apk/res/android"

     android:shape="rectangle"

     android:useLevel="false" >

     <corners

         android:topLeftRadius="10dp"

         android:topRightRadius="10dp"

         android:bottomLeftRadius="10dp"

         android:bottomRightRadius="10dp" />

     <gradient

         android:type="sweep"

         android:endColor="@android:color/holo_blue_bright"

         android:startColor="@android:color/holo_green_dark"

         android:centerColor="@android:color/holo_blue_dark"

         android:useLevel="false" />

     <size android:width="60dp" android:height="60dp" />

 </shape>

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

 <shape

     xmlns:android="http://schemas.android.com/apk/res/android"

     android:shape="oval"

     android:useLevel="false" >

     <gradient

         android:type="linear"

         android:angle="45"

         android:startColor="@android:color/holo_green_dark"

         android:centerColor="@android:color/holo_blue_dark"

         android:endColor="@android:color/holo_red_dark"

         android:useLevel="false" />

     <size android:width="60dp" android:height="60dp" />

     <stroke android:width="1dp"

         android:color="@android:color/white" />

 </shape>

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

 <shape

     xmlns:android="http://schemas.android.com/apk/res/android"

     android:shape="line" >

     <size android:width="60dp"

         android:height="60dp" />

     <stroke android:width="2dp"

         android:color="@android:color/holo_purple"

         android:dashWidth="10dp"

         android:dashGap="5dp" />

 </shape>

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

 <shape

     xmlns:android="http://schemas.android.com/apk/res/android"

     android:shape="ring"

     android:useLevel="false"

     android:innerRadius="40dp"

     android:thickness="3dp">

     <gradient android:type="radial"

         android:gradientRadius="150"

         android:centerY="0.1"

         android:centerX="0.2"

         android:startColor="@android:color/holo_red_dark"

         android:centerColor="@android:color/holo_green_dark"

         android:endColor="@android:color/white" />

     <size android:width="90dp"

         android:height="90dp" />

 </shape>

1. <Button
2. android:layout_width="wrap_content"
3. android:layout_height="wrap_content"
4. android:text="TestShapeButton"
5. android:background="@drawable/button_selector"
6. />

1. <?xml version="1.0" encoding="utf-8"?>
2. <selector
3. xmlns:android="http://schemas.android.com/apk/res/android">
4. <item android:state_pressed="true" >
5. <shape>
6. <!-- 渐变 -->
7. <gradient
8. android:startColor="#ff8c00"
9. android:endColor="#FFFFFF"
10. android:type="radial"
11. android:gradientRadius="50" />
12. <!-- 描边 -->
13. <stroke
14. android:width="2dp"
15. android:color="#dcdcdc"
16. android:dashWidth="5dp"
17. android:dashGap="3dp" />
18. <!-- 圆角 -->
19. <corners
20. android:radius="2dp" />
21. <padding
22. android:left="10dp"
23. android:top="10dp"
24. android:right="10dp"
25. android:bottom="10dp" />
26. </shape>
27. </item>
28. <item android:state_focused="true" >
29. <shape>
30. <gradient
31. android:startColor="#ffc2b7"
32. android:endColor="#ffc2b7"
33. android:angle="270" />
34. <stroke
35. android:width="2dp"
36. android:color="#dcdcdc" />
37. <corners
38. android:radius="2dp" />
39. <padding
40. android:left="10dp"
41. android:top="10dp"
42. android:right="10dp"
43. android:bottom="10dp" />
44. </shape>
45. </item>
46. <item>
47. <shape>
48. <solid android:color="#ff9d77"/>
49. <stroke
50. android:width="2dp"
51. android:color="#fad3cf" />
52. <corners
53. android:topRightRadius="5dp"
54. android:bottomLeftRadius="5dp"
55. android:topLeftRadius="0dp"
56. android:bottomRightRadius="0dp"
57. />
58. <padding
59. android:left="10dp"
60. android:top="10dp"
61. android:right="10dp"
62. android:bottom="10dp" />
63. </shape>
64. </item>
65. </selector>

<size>

Determines the size of the shape.

Attributes

<gradient>

Adds a background gradient to the shape.

Attributes

<solid>

Adds a solid background color to the shape. Overides gradient element.

Attributes

<stroke>

Adds a border to the shape.

Attributes

<corners>

Adds rounded corners to the shape.

Attributes

<padding>

The padding for the content within this drawable. (Does not pad graphics in any way.)

Attributes