安卓中Drawable类 shape样式定义

想做自己想要的按键码？今天知道了selector可以按键的shape样式都包含在其中，棒极了。

selector可以理解为状态切换器，不同的状态下切换不同的样式，在传统WEB设计中就是伪类hover。shape意为定义按钮的形状。

View Code 

1 <? xml version="1.0" encoding="utf-8" ?>
2 < selector  xmlns:android ="http://schemas.android.com/apk/res/android" >
3 < item  android:state_pressed ="true" >
4 < shape >
5 < gradient 
6 android:startColor ="#ff8c00"
7 android:endColor ="#FFFFFF"
8 android:angle ="270" />
9
10 < stroke 
11 android:width ="2dp"
12 android:color ="#dcdcdc" />
13
14 < corners 
15 android:radius ="2dp" />
16
17 < padding 
18 android:left ="10dp"
19 android:top ="10dp"
20 android:right ="10dp"
21 android:bottom ="10dp" />
22
23 </ shape >
24
25 </ item >
26
27 < item  android:state_focused ="true" >
28 < shape >
29 < gradient 
30 android:startColor ="#ffc2b7"
31 android:endColor ="#ffc2b7"
32 android:angle ="270" />
33
34 < stroke 
35 android:width ="2dp"
36 android:color ="#dcdcdc" />
37
38 < corners 
39 android:radius ="2dp" />
40
41 < padding
42 android:left ="10dp"
43 android:top ="10dp"
44 android:right ="10dp"
45 android:bottom ="10dp" />
46
47 </ shape >
48
49 </ item >
50
51 < item >
52 < shape >
53 < gradient 
54 android:startColor ="#ff9d77"
55 android:endColor ="#ff9d77"
56 android:angle ="270" />
57
58 < stroke 
59 android:width ="2dp"
60 android:color ="#fad3cf" />
61
62 < corners 
63 android:radius ="2dp" />
64
65 < padding 
66 android:left ="10dp"
67 android:top ="10dp"
68 android:right ="10dp"
69 android:bottom ="10dp" />
70
71 </ shape >
72
73 </ item >
74
75 </ selector