android定义圆形按钮Shape，选中改变颜色

Myth丶恋晨 2023-10-17 09:40 1阅读 0赞

**功能说明:android定义圆形按钮,使用Shape与selector选择器，按钮选择背景色改变**  
**1.activty的布局**  
<Button  
android:id="@+id/login"  
android:text="登录"  
android:layout\_width="200dp"  
android:layout\_height="wrap\_content"  
android:background="@drawable/button\_selector"  
android:layout\_centerInParent="true"/>  
**2、button\_selector.xml 样式代码如下：**  
<?xml version="1.0" encoding="utf-8"?>  
<selector xmlns:android="http://schemas.android.com/apk/res/android">  
<item android:state\_pressed="false" >   
<shape >  
<stroke android:width="0.8dp" android:color="@color/greenlight2" />   
<solid android:color="@color/greenlight" />    
<corners android:radius="5dip" />   
<padding android:bottom="10dp"  
android:left="10dp"  
android:right="10dp"  
android:top="10dp" />  
</shape>  
</item>  
  
<item android:state\_pressed="true" >    
<shape >  
<stroke android:width="0.8dp" android:color="@color/greenlight2" />   
<solid android:color="@color/green" />    
<corners android:radius="5dip" />   
<padding android:bottom="10dp"  
android:left="10dp"  
android:right="10dp"  
android:top="10dp" />  
</shape>  
</item>  
</selector>  
**3.效果图**

**点击前，按钮颜色浅；选中颜色加深**

**![Center][]![Center 1][]**

[Center]: https://img-blog.csdn.net/20161209110103196?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGluODU3/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 1]: https://img-blog.csdn.net/20161209110114267?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGluODU3/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center