宽度与高度属性绑定的问题

https://blog.csdn.net/zhuhai__yizhi/article/details/52921374

一、定义绑定视图适配器

@BindingAdapter("android:layout_width")
public static void setLayoutWidth(View view, float width) {
    ViewGroup.LayoutParams params = view.getLayoutParams();
    params.height = (int) width;
    view.setLayoutParams(params);
}

@BindingAdapter("android:layout_height")
public static void setLayoutHeight(View view, float height) {
    ViewGroup.LayoutParams params = view.getLayoutParams();
    params.height = (int) height;
    view.setLayoutParams(params);
}

二、xml绑定
注意两点：1）只能绑定dimen值 2)要绑定default值

        <TextView
            android:layout_width="@{@dimen/text_width, default=@dimen/text_width}"
            android:layout_height="@{@dimen/text_height, default=@dimen/text_height}"
            android:background="#e6e6e6"
            android:gravity="center"
            android:text="my girl!" />