Win8Search.java 文件源码

private void init() {
    mPaint = new Paint();
    mPaint.setStyle(Paint.Style.STROKE); // 设置为空心
    mPaint.setStrokeWidth(15); // 宽度
    mPaint.setColor(Color.RED); // 颜色
    mPaint.setStrokeCap(Paint.Cap.ROUND); // 设置画笔为园笔
    mPaint.setAntiAlias(true); // 抗锯齿
    mPath = new Path(); // 路径
    RectF rect = new RectF(-100, -100, 100, 100); // 测定圆弧的范围
    mPath.addArc(rect, -90, 359.9f); // 设置路径范围，起始角度，终止角度
    mPathMeasure = new PathMeasure(mPath, false); // 初始化要截取的路径

    valueAnimator = ValueAnimator.ofFloat(0f, 1f).setDuration(2500);
    valueAnimator.setRepeatCount(ValueAnimator.INFINITE); // 设置动画播放模式
    valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(ValueAnimator animation) {
            animationValue = (float) animation.getAnimatedValue();
            invalidate();
        }
    });
    valueAnimator.start();
}