I have an image view "stone" and am moving it from its current position to a X,Y position. I want it to move along a curve. Please let me know how I can do that(i have set the min api as 11)
ObjectAnimator moveX = ObjectAnimator.ofFloat(stone, "x", catPos[0] );
ObjectAnimator moveY = ObjectAnimator.ofFloat(stone, "y", catPos[1] );
AnimatorSet as = new AnimatorSet();
as.playTogether(moveX, moveY);
as.start();
The answer by Budius seems perfectly useful to me.
Here are the animator objects I use:
Purpose: Move View "view" along Path "path"
Android v21+:
// Animates view changing x, y along path co-ordinates
ValueAnimator pathAnimator = ObjectAnimator.ofFloat(view, "x", "y", path)
Android v11+:
// Animates a float value from 0 to 1
ValueAnimator pathAnimator = ValueAnimator.ofFloat(0.0f, 1.0f);
// This listener onAnimationUpdate will be called during every step in the animation
// Gets called every millisecond in my observation
pathAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
float[] point = new float[2];
@Override
public void onAnimationUpdate(ValueAnimator animation) {
// Gets the animated float fraction
float val = animation.getAnimatedFraction();
// Gets the point at the fractional path length
PathMeasure pathMeasure = new PathMeasure(path, true);
pathMeasure.getPosTan(pathMeasure.getLength() * val, point, null);
// Sets view location to the above point
view.setX(point[0]);
view.setY(point[1]);
}
});
Similar to: Android, move bitmap along a path?
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