How to prepare curve translate animation for android?

Question

There are 4 types of animations in android - rotate, alpha,scale and translate. I want to prepare curved translate animation.

Is it possible.?

Answer 1

What Android version do you use? Since API level 11 you can use custom Animators which can easily implement your curve translation.

If you use a version below that there is afaik only the possibility to manually concatenate multiple linear translations using the translate animation and setting animation listeners

EDIT:

Example:

View view;
animator = ValueAnimator.ofFloat(0, 1); // values from 0 to 1
animator.setDuration(5000); // 5 seconds duration from 0 to 1
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener()
{
    @Override
    public void onAnimationUpdate(ValueAnimator animation) {
        float value = ((Float) (animation.getAnimatedValue()))
                    .floatValue();
        // Set translation of your view here. Position can be calculated
        // out of value. This code should move the view in a half circle.
        view.setTranslationX((float)(200.0 * Math.sin(value*Math.PI)));
        view.setTranslationY((float)(200.0 * Math.cos(value*Math.PI)));
    }
});

I hope it works. Just copied & pasted (and shortened and changed) the code from one of my apps.