@Nullable
private Animator createAnimation(@NonNull final View view, float startScale, float endScale, @Nullable TransitionValues values) {
final float initialScaleX = view.getScaleX();
final float initialScaleY = view.getScaleY();
float startScaleX = initialScaleX * startScale;
float endScaleX = initialScaleX * endScale;
float startScaleY = initialScaleY * startScale;
float endScaleY = initialScaleY * endScale;
if (values != null) {
Float savedScaleX = (Float) values.values.get(PROPNAME_SCALE_X);
Float savedScaleY = (Float) values.values.get(PROPNAME_SCALE_Y);
// if saved value is not equal initial value it means that previous
// transition was interrupted and in the onTransitionEnd
// we've applied endScale. we should apply proper value to
// continue animation from the interrupted state
if (savedScaleX != null && savedScaleX != initialScaleX) {
startScaleX = savedScaleX;
}
if (savedScaleY != null && savedScaleY != initialScaleY) {
startScaleY = savedScaleY;
}
}
view.setScaleX(startScaleX);
view.setScaleY(startScaleY);
Animator animator = TransitionUtils.mergeAnimators(
ObjectAnimator.ofFloat(view, View.SCALE_X, startScaleX, endScaleX),
ObjectAnimator.ofFloat(view, View.SCALE_Y, startScaleY, endScaleY));
addListener(new TransitionListenerAdapter() {
@Override
public void onTransitionEnd(@NonNull Transition transition) {
view.setScaleX(initialScaleX);
view.setScaleY(initialScaleY);
transition.removeListener(this);
}
});
return animator;
}
@Override
public void onTransitionEnd(Transition transition) {
onSuggestionDismissed();
}
@Override
public void onTransitionStart(Transition transition) {
}
@Override
public void onTransitionCancel(Transition transition) {
}
@Override
public void onTransitionPause(Transition transition) {
}
@Override
public void onTransitionResume(Transition transition) {
}