我可以在内部选择器中使用图层列表吗？

Question

我有以下drawables

<!-- button_shape.xml -->
<?xml version="1.0" encoding="utf-8"?>

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="false">
        <shape android:shape="rectangle">
            <corners android:radius="3dp"/>
            <solid android:color="#006600" />
        </shape>
    </item>

    <item android:state_pressed="true">
        <shape android:shape="rectangle">
            <corners android:radius="3dp"/>
            <solid android:color="#003300" />
        </shape>
    </item>
</selector>

和

<!-- button_shape_shadowed.xml -->
<?xml version="1.0" encoding="utf-8"?>

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <corners android:radius="5dp"/>
            <solid android:color="#D0D0D0"/>
        </shape>
    </item>
    <item>
        <inset
            android:drawable="@drawable/button_shape"
            android:insetBottom="5dp"
            android:insetLeft="5dp"
            android:insetRight="5dp"
            android:insetTop="5dp">
        </inset>
    </item>
</layer-list>

有没有办法将它们合并为一个？我的主要问题是我不能有selector内心inset.由于button_shape.xml没有在其他地方使用,我不想无缘无故地创建额外的文件.

Answer 1

多谢你们!以下工作正常,即使Android Studio抱怨selector内部不允许这样做inset.

<?xml version="1.0" encoding="utf-8"?>

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <corners android:radius="5dp"/>
            <solid android:color="#D0D0D0"/>
        </shape>
    </item>
    <item>
        <inset android:insetBottom="2dp">
            <selector>
                <item android:state_pressed="false">
                    <shape android:shape="rectangle">
                        <corners android:radius="3dp"/>
                        <solid android:color="#006600" />
                    </shape>
                </item>

                <item android:state_pressed="true">
                    <shape android:shape="rectangle">
                        <corners android:radius="3dp"/>
                        <solid android:color="#003300" />
                    </shape>
                </item>
            </selector>
        </inset>
    </item>
</layer-list>