Android 中图片和按钮按下状态变化实例代码解析

砸漏

发布于 2020-11-05 09:26:49

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发布于 2020-11-05 09:26:49

文章被收录于专栏：恩蓝脚本

1、图片设置背景选择器，以便点按或设置选中与否，背景切换

res/drawable/selector_settings_item_back.xml

<?xml version="1.0" encoding="utf-8"?  
<selector xmlns:android="http://schemas.android.com/apk/res/android"  
  <item android:state_focused="true" android:drawable="@color/settingsSelectedItem"/  
  <item android:state_pressed="true" android:drawable="@color/settingsSelectedItem"/  
  <item android:state_selected="true" android:drawable="@color/settingsSelectedItem"/  
  <item android:state_focused="false" android:drawable="@color/settingsItem"/  
</selector

颜色值定义：

res/values/colors.xml

<?xml version="1.0" encoding="utf-8"?  
<resources  
  <color name="settingsItem" #ffffff</color  
  <color name="settingsSelectedItem" #FFA500</color  
</resources

2、圆角按钮，按下抬起切换背景，同时切换文字颜色

res/layout/activity_xxx.xml

<Button 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:layout_weight="1" 
android:background="@drawable/selector_shape_corner_button" 
  android:text="审批中" android:textColor="@drawable/selector_font_style_corner_button" 
  android:textSize="13sp" 
  /

其中引用了 res/drawable/ 下的两个 selector ，

一个是背景图片随点按抬起状态进行切换，一个是文本颜色随点按抬起进行切换。

res/drawable/selector_shape_corner_button.xml

<?xml version="1.0" encoding="utf-8"?  
<selector xmlns:android="http://schemas.android.com/apk/res/android"  
  <item android:state_focused="true" android:drawable="@drawable/shape_corner_button_fill"/  
  <item android:state_pressed="true" android:drawable="@drawable/shape_corner_button_fill"/  
  <item android:state_selected="true" android:drawable="@drawable/shape_corner_button_fill"/  
  <item android:state_focused="false" android:drawable="@drawable/shape_corner_button"/  
</selector  
 res/drawable/selector_font_style_corner_button

shape_corner_button.xml

<?xml version="1.0" encoding="utf-8"?  
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
  android:shape="rectangle"  
  <corners 
    android:radius="5dp" /  
  <solid 
    android:color="#001da1f2" /  
  <stroke 
    android:width="1dp" 
    android:color="#1da1f2" /  
</shape

shape_corner_button_fill.xml

<?xml version="1.0" encoding="utf-8"?  
<shape 
xmlns:android="http://schemas.android.com/apk/res/android" 
  android:shape="rectangle"  
  <corners 
    android:radius="5dp" /  
  <solid 
    android:color="#ff1da1f2" /  
  <stroke 
    android:width="1dp" 
    android:color="#1da1f2" /  
</shape  
<?xml version="1.0" encoding="utf-8"?  
<selector xmlns:android="http://schemas.android.com/apk/res/android"  
  <item android:state_focused="true" android:color="#ffffff"/  
  <item android:state_pressed="true" android:color="#ffffff"/  
  <item android:state_selected="true" android:color="#ffffff"/  
  <item android:state_focused="false" android:color="#1da1f2"/  
</selector

总结

以上所述是小编给大家介绍的Android 中图片和按钮按下状态变化实例代码解析，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对ZaLou.Cn网站的支持！

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原始发表：2020-09-11 ，如有侵权请联系 cloudcommunity@tencent.com 删除

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