update demo page (#1585)

bltcn

2024-04-03 c1a492a96e6d78ea4dbad63a51aa9065780e1287

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<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <stroke android:width="1dp" android:color="#000000" />
    <padding android:left="5dp" android:top="5dp" android:right="5dp" android:bottom="5dp" />
</shape>