如何在Android中用射击之星发光效果绘制弧线

Question

我真正想要的是一个动画，一个带有效果的弧线看起来像是从天空落下的流星，你可以看到LG G3上的动画＆＃39;圆形小窗口，每次关闭的情况下，动画在戒指周围发光，查看此视频，来自youtube（你可以在00：18,00：30,01：18,01：29 ......看到它） ：

https://www.youtube.com/watch?v=tEQpYms1bJA

我做了一些搜索，并编写了我的代码（参考this），但绘制弧线的线条看起来很结实，没有我想要的效果，这是我的圆弧绘图代码：

public class SideArcsView extends View{

private Paint mPaint;
private int parentWidth;
private int strokeWidth;
private RectF oval;
private static int INITIAL_LEFT_ARC_START_ANGLE = 225;
private static int INITIAL_RIGHT_ARC_START_ANGLE = 315;
private int startLeftArcAngle = INITIAL_LEFT_ARC_START_ANGLE;
private int startRightArcAngle = INITIAL_RIGHT_ARC_START_ANGLE;
private int arcAngle = 45;

public SideArcsView(Context mContext, int parentWidth) {
    super(mContext);
    this.parentWidth = parentWidth;
    init();
}

private void init() {
    strokeWidth = (12 * parentWidth) / 300;
    initPaint();
    initOval();
}

private void initPaint() {
    mPaint = new Paint();
    mPaint.setColor(Color.WHITE);
    mPaint.setStrokeWidth(strokeWidth);
    mPaint.setStyle(Paint.Style.STROKE);
    mPaint.setAntiAlias(true);
    mPaint.setStrokeCap(Paint.Cap.ROUND);
}

private void initOval() {
    float padding = mPaint.getStrokeWidth() / 2;
    oval = new RectF();
    oval.set(padding, padding, parentWidth - padding, parentWidth - padding);
}

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    drawArcs(canvas);
}

private void drawArcs(Canvas canvas) {
    canvas.drawArc(oval, startLeftArcAngle, arcAngle, false, mPaint);
    canvas.drawArc(oval, startRightArcAngle, -arcAngle, false, mPaint);
}

public void startRotateAnimation() {
    ValueAnimator valueAnimator = ValueAnimator.ofInt(0, 136);
    valueAnimator.setInterpolator(new DecelerateInterpolator());
    valueAnimator.setDuration(2000);
    valueAnimator.setRepeatCount(ValueAnimator.INFINITE);
    valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(ValueAnimator animation) {
            startLeftArcAngle = INITIAL_LEFT_ARC_START_ANGLE - (int) animation.getAnimatedValue();
            startRightArcAngle = INITIAL_RIGHT_ARC_START_ANGLE + (int) animation.getAnimatedValue();
            invalidate();
        }
    });
    valueAnimator.start();
}

public void startResizeDownAnimation() {
    ValueAnimator valueAnimator = ValueAnimator.ofInt(45, 10);
    valueAnimator.setInterpolator(new DecelerateInterpolator());
    valueAnimator.setDuration(2000);
    valueAnimator.setRepeatCount(ValueAnimator.INFINITE);
    valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(ValueAnimator animation) {
            arcAngle = (int) animation.getAnimatedValue();
            invalidate();
        }
    });
    valueAnimator.start();
}

}

看起来像：

有人可以告诉我如何绘制LG G3的发光圈戒指吗？请给我一些建议......