我在做Android的虚拟车速表。 我用的是RotateAnimation（）旋转速度表指针。

I am making a virtual speedometer in android. I use the RotateAnimation() to rotate the speedometer needle.

有没有什么办法让针的旋转过程中的角位置？也就是说，如果将针旋转从0到360度，我想在动画的期间，以显示在各点的针角度。 我用下面的code来进行动画。

Is there any way to get the angular position of the needle during the rotation? That is, if the needle is rotating from 0 to 360 degree, I want to display the needles angle at each point during the period of animation. I use the following code to perform the animation.

RotateAnimation rpmNeedleDeflection = new RotateAnimation(-32, 213, (float) 135, needle.getHeight()/2);
rpmNeedleDeflection.setDuration(1500);
rpmNeedleDeflection.setFillAfter(true);
needle.startAnimation(rpmNeedleDeflection);
needle.refreshDrawableState();

任何帮助，请... 先谢谢了。

Any help please... Thanks in advance.

推荐答案

您可以尝试重写applyTransformation

you may try to override applyTransformation

    RotateAnimation rpmNeedleDeflection = new RotateAnimation(fromDegrees, toDegrees, ...){
                protected void applyTransformation(float interpolatedTime,Transformation t) {
                    float currentDegree = fromDegrees+(toDegrees-fromDegrees)*interpolatedTime;
                    super.applyTransformation(interpolatedTime, t);
                };

            }