FloatingActionButton.java 文件源码

private void init() {
    defaultPaint = new Paint();
    defaultPaint.setAntiAlias(true);
    defaultPaint.setColor(defaultBgColor);

    focusPaint = new Paint();
    focusPaint.setAntiAlias(true);
    focusPaint.setColor(focusBgcolor);

    icon = BitmapFactory.decodeResource(getResources(), R.drawable.ic_action_new);
    getIconParams();

       mDrawFilter = new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);

       this.setBackgroundResource(0);
}