一.创建xml文件,位置:drawable/xxx.xml,同目录下记得要放相关图片
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- <?xml?version="1.0"?encoding="utf-8"?>??
- <selector?xmlns:android="http://schemas.android.com/apk/res/android">??
- ??
- ????<!--?没有焦点时的背景图片?-->??
- ????<item?android:drawable="@drawable/handle_normal"?android:state_enabled="true"?android:state_window_focused="false"/>??
- ????<!--?触摸模式按下时的背景图片?-->??
- ????<item?android:drawable="@drawable/handle_pressed"?android:state_pressed="true"/>??
- ????<item?android:drawable="@drawable/handle_focused"?android:state_enabled="true"?android:state_focused="true"/>??
- ????<item?android:drawable="@drawable/handle_normal"?android:state_enabled="true"/>??
- ????<!--?获得焦点时的图片背景?-->??
- ????<item?android:drawable="@drawable/handle_focused"?android:state_focused="true"/>??
- ??
- ????<!--??
- ????android:state_selected是选中??
- ????android:state_focused是获得焦点??
- ????android:state_pressed是点击??
- ????android:state_enabled是设置是否响应事件,指所有事件??
- ????-->??
- ??
- </selector>??
<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android"> <!-- 没有焦点时的背景图片 --> <item android:drawable="@drawable/handle_normal" android:state_enabled="true" android:state_window_focused="false"/> <!-- 触摸模式按下时的背景图片 --> <item android:drawable="@drawable/handle_pressed" android:state_pressed="true"/> <item android:drawable="@drawable/handle_focused" android:state_enabled="true" android:state_focused="true"/> <item android:drawable="@drawable/handle_normal" android:state_enabled="true"/> <!-- 获得焦点时的图片背景 --> <item android:drawable="@drawable/handle_focused" android:state_focused="true"/> <!-- android:state_selected是选中 android:state_focused是获得焦点 android:state_pressed是点击 android:state_enabled是设置是否响应事件,指所有事件 --></selector>
二.使用xml文件:
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1.方法一:在listview中配置android:listSelector="@drawable/xxx
或者在listview的item中添加属性android:background="@drawable/xxx"
2.方法二:Drawable drawable = getResources().getDrawable(R.drawable.xxx);??
???????ListView.setSelector(drawable);但是这样会出现列表有时候为黑的情况,需要加上:android:cacheColorHint="@android:color/transparent"使其透明。
相关属性:
android:state_selected是选中
android:state_focused是获得焦点
android:state_pressed是点击
android:state_enabled是设置是否响应事件,指所有事件
根据这些状态同样可以设置button的selector效果。也可以设置selector改变button中的文字状态。
以下是配置button中的文字效果:
drawable/button_font.xml
- <?xml?version="1.0"?encoding="utf-8"?>??
- <selector?xmlns:android="http://schemas.android.com/apk/res/android">??
- ????<item?android:state_selected="true"?android:color="#FFF"?/>??
- ????<item?android:state_focused="true"?android:color="#FFF"?/>??
- ????<item?android:state_pressed="true"?android:color="#FFF"?/>??
- ????<item?android:color="#000"?/>??
- </selector>??
<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_selected="true" android:color="#FFF" /> <item android:state_focused="true" android:color="#FFF" /> <item android:state_pressed="true" android:color="#FFF" /> <item android:color="#000" /></selector>Button还可以实现更复杂的效果,例如渐变
drawable/button_color.xml
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- <?xml?version="1.0"?encoding="utf-8"?>??
- <selector?xmlns:android="http://schemas.android.com/apk/res/android">?????????/???
- <item?android:state_pressed="true">//定义当button?处于pressed?状态时的形态。???
- ????????????????<shape>??
- ????????????????<gradient??android:startColor="#8600ff"?/>???
- ??????????????????????<stroke???android:width="2dp"?android:color="#000000"?/>???
- ???????????????????????<corners?android:radius="5dp"?/>????
- ???????????????????????<padding?android:left="10dp"?android:top="10dp"???
- ????????????????????????????????android:bottom="10dp"?android:right="10dp"/>????
- ?????????????????</shape>???
- </item>???
- <item?android:state_focused="true">//定义当button获得?focus时的形态???
- ?????????????????<shape>???
- ???????????????????????<gradient?android:startColor="#eac100"/>???
- ???????????????????????<stroke?android:width="2dp"?android:color="#333333"??color="#ffffff"/>???
- ???????????????????????<corners?android:radius="8dp"?/>?????
- ???????????????????????<padding?android:left="10dp"?android:top="10dp"???
- ????????????????????????????????android:bottom="10dp"?android:right="10dp"/>?????????????????????
- ????????????????</shape>???
- ?</item>??
- </selector>
- <?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">???????? /
<item android:state_pressed="true">//定义当button 处于pressed 状态时的形态。
??????????????? <shape>
??????????????? <gradient? android:startColor="#8600ff" />
????????????????????? <stroke?? android:width="2dp" android:color="#000000" />
?????????????????????? <corners android:radius="5dp" />?
?????????????????????? <padding android:left="10dp" android:top="10dp"
??????????????????????????????? android:bottom="10dp" android:right="10dp"/>?
???????????????? </shape>
</item>
<item android:state_focused="true">//定义当button获得 focus时的形态
???????????????? <shape>
?????????????????????? <gradient android:startColor="#eac100"/>
?????????????????????? <stroke android:width="2dp" android:color="#333333"? color="#ffffff"/>
?????????????????????? <corners android:radius="8dp" />??
?????????????????????? <padding android:left="10dp" android:top="10dp"
??????????????????????????????? android:bottom="10dp" android:right="10dp"/>??????????????????
??????????????? </shape>
</item>
</selector>
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最后,需要在包含?button的xml文件里添加两项。例如main.xml?文件,需要在<Button />里加两项android:focusable="true"?android:background="@drawable/button_color"这样就把drawale/button_color.xml文件与这个控件关联起来了。