背景选择器常见错误

1.button背景选择器必须加上形状:

<item android:state_pressed="true"> <shape android:shape="rectangle"> <solid android:color="#F39800"></solid> </shape> </item> <item android:state_pressed="false"> <shape android:shape="rectangle"> <solid android:color="#D7D7D7"></solid> </shape> </item>

2.不加形状,会报错的

<item android:state_pressed="true" android:color="#D7D7D7"> </item> <item android:state_pressed="false" android:color="#97F765"> </item>