Path Anim

mPath = new Path();
        mPath.moveTo(POINT0[0], POINT0[1]);
        mPath.lineTo(POINT1[0], POINT1[1]);
        mPath.cubicTo(POINT1[0], POINT1[1], POINT2[0], POINT2[1],POINT3[0], POINT3[1]);//贝塞尔曲线
        mPath.lineTo(POINT4[0], POINT4[1]);
        mPath.cubicTo(POINT4[0], POINT4[1], POINT5[0], POINT5[1],POINT6[0], POINT6[1]);
        
mPathMeasure = new PathMeasure(mPath, true);//true 执行一次
mCurrentPosition = setPoint((float)POINT0[0],(float)POINT0[1]);


@Override
protected void onDraw(Canvas canvas) {
      // 绘制对应目标
	    canvas.drawBitmap(bmp, mCurrentPosition[0], mCurrentPosition[1], mPaint);
}

// 开启路径动画
	    public void startPathAnim(long duration) {
	    	if(mPathMeasure==null){
	    		return;
	    	}
	        // 0 － getLength()
	        ValueAnimator valueAnimator = ValueAnimator.ofFloat(0, mPathMeasure.getLength());
	        Log.i(TAG, "---------------measure length = " + mPathMeasure.getLength());
	        valueAnimator.setDuration(duration);
	        valueAnimator.setRepeatCount(valueAnimator.INFINITE);
	        // 减速插值器
	        valueAnimator.setInterpolator(new DecelerateInterpolator());
	        valueAnimator.addUpdateListener(new AnimatorUpdateListener() {

	            @Override
	            public void onAnimationUpdate(ValueAnimator animation) {
	                float value = (Float) animation.getAnimatedValue();
	                // 获取当前点坐标封装到mCurrentPosition
	                mPathMeasure.getPosTan(value, mCurrentPosition, null);
	                postInvalidate();
	            }
	        });
	        valueAnimator.start();
	    }