package android.transition;
import android.animation.Animator;
import android.animation.ObjectAnimator;
import android.view.View;
import android.view.ViewGroup;
public class Rotate extends Transition {
private static final String PROPNAME_ROTATION = "android:rotate:rotation";
@Override
public void captureStartValues(TransitionValues transitionValues) {
transitionValues.values.put(PROPNAME_ROTATION, transitionValues.view.getRotation());
}
@Override
public void captureEndValues(TransitionValues transitionValues) {
transitionValues.values.put(PROPNAME_ROTATION, transitionValues.view.getRotation());
}
@Override
public Animator createAnimator(ViewGroup sceneRoot, TransitionValues startValues,
TransitionValues endValues) {
if (startValues == null || endValues == null) {
return null;
}
final View view = endValues.view;
float startRotation = (Float) startValues.values.get(PROPNAME_ROTATION);
float endRotation = (Float) endValues.values.get(PROPNAME_ROTATION);
if (startRotation != endRotation) {
view.setRotation(startRotation);
return ObjectAnimator.ofFloat(view, View.ROTATION,
startRotation, endRotation);
}
return null;
}
}