请合并最新代码，优化绑定信息

xm

2020-05-08 6bca8fcd37a48808a0b9c9342fc1be0adddfece6

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<?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>