Speedview animation not working with float, but works with int.

[SgtPrinsen]

I feel like I'm doing something silly but I can't figure it out. When I use int, this code works fine and will animate the speedview between the different values with a one second interval. When I use float, the speedview sits at 0 and then at 5 seconds, it it will animate to the last value in the array (in the below example, 5f). Any idea?

This works

int[] intArray = {10,20,15,25,5};
final ValueAnimator anim = ValueAnimator.ofInt(intArray);
anim.addUpdateListener(animation -> {
int value = (int) anim.getAnimatedValue();
speedView.speedTo(value, 1000L);
});
anim.setDuration(5000).start();

This doesn't

float[] floatArray = {10f, 20f, 15f, 25f, 5f}; final ValueAnimator anim = ValueAnimator.ofFloat(floatArray); anim.addUpdateListener(animation -> { float value = (float) anim.getAnimatedValue()); speedView.speedTo(value, 1000L); }); anim.setDuration(5000).start();

[anastr]

Hi @SgtPrinsen,

When you're using Int, the ValueAnimator has only 5 values to jump into. While in float it has an unlimited number of values. And in both cases, you're trying to set a new speed value with animation. Which means (in the float animator) you will start a new animation for every millisecond.

You can try to set the speed value to the speedometer immediately without animation by using the setSpeedAt function to see I mean.

[SgtPrinsen]

Thanks for the quick response! What do you mean by float has an unlimited number of values? In my float array I only gave it the 5 float values, same as int. So with five values in the array and the animator duration set to 5000ms, I'd expect the ValueAnimator to start an animation every 1000ms.

[anastr]

For a float animator, you will get as a value while the animation is running a lot of decimal numbers between each 2 values from your array. For example if your array is something like {10f, 20f, 15f, 25f, 5f} and you start the animator with a 5 seconds duration, for the first second the values you will get is something like [10.01, 10.03, 10.12, ..., 20] and so on.

[SgtPrinsen]

Sorry I'm having a tough time understanding, but even if it has a lot of values over that second [10.01 -> 20] as long as it ends at 20, why doesn't the speedView move to 20 at the end of a second?

[anastr]

As I mentioned previously, the speedTo function also starts running an animator. Try to use the setSpeedAt function instead.

[SgtPrinsen]

setSpeedAt works! Thanks for your help on this!