自定義view屬性

1.在values下建立 attr.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="MyTextView">
        <attr name="myIcon" format="reference"/>
    </declare-styleable>
</resources>
           

2.布局中使用該view

3. 拿到自定義屬性的值

TypedArray typedArray  = context.getTheme().obtainStyledAttributes(attrs, R.styleable.MyTextView, 0, 0);
        try {
            int id =typedArray.getResourceId(R.styleable.MyTextView_myIcon,0);
            if (id!=0){
                Drawable clearDraw = ContextCompat.getDrawable(getContext(),id);
                //拿到就可以設定背景之類的
            }
        } finally {
            typedArray.recycle();
        }