是否可以使用具有drawable和<shape>
属性的XML-Background资源?
所以我有这个按钮
<Button
android:layout_marginRight="5dp"
android:id="@+id/send_button"
android:layout_width="40dp"
android:layout_height="40dp"
android:background="@drawable/send_button" />
其中有一个背景send_button.xml:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/ic_send_white_48dp" android:state_focused="true"/>
<item android:drawable="@drawable/ic_send_white_48dp" android:state_pressed="true"/>
<item android:drawable="@drawable/ic_send_black_48dp"/>
</selector>
现在这很好用。但我还想在可绘制和圆角后面添加背景颜色,如下所示:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<corners android:radius="4dp" />
<gradient
android:angle="270"
android:endColor="#88b823"
android:startColor="#b0dc54" />
</shape>
那么可以将这两个XML资源组合起来吗? 到目前为止我尝试过的只是显示可绘制的而不是形状:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/ic_send_white_48dp" android:state_focused="true"/>
<item android:drawable="@drawable/ic_send_white_48dp" android:state_pressed="true"/>
<item android:drawable="@drawable/ic_send_black_48dp">
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<corners android:radius="4dp" />
<gradient android:angle="270"
android:endColor="#88b823"
android:startColor="#b0dc54" />
</shape>
</item>
</selector>
答案 0 :(得分:1)
感谢@CommonsWare指出我正确的方向。这是工作代码(目前仅用于默认状态):
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/ic_send_white_48dp" android:state_focused="true"/>
<item android:drawable="@drawable/ic_send_white_48dp" android:state_pressed="true"/>
<item>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<corners android:radius="4dp" />
<solid android:color="@color/action_bar" />
</shape>
</item>
<item>
<bitmap android:src="@drawable/ic_send_black_48dp" />
</item>
</layer-list>
</item>
</selector>