???????

黄学彪

2020-05-11 2e7e5f9af5b32cfe1fc3c6ba40bf7eb984bbd0a4

1
2
3
4
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent">
    <Button android:id="@+id/myButton" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/hello" />
</LinearLayout>