MaterialProgressDrawable.java 文件源码

public Ring(Callback callback) {
    this.mCallback = callback;
    this.mPaint.setStrokeCap(Cap.SQUARE);
    this.mPaint.setAntiAlias(true);
    this.mPaint.setStyle(Style.STROKE);
    this.mArrowPaint.setStyle(Style.FILL);
    this.mArrowPaint.setAntiAlias(true);
}