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ChangeScroll.javaAPI DocAndroid 5.1 API2991Thu Mar 12 22:22:10 GMT 2015android.transition

ChangeScroll

public class ChangeScroll extends android.transition.Transition
This transition captures the scroll properties of targets before and after the scene change and animates any changes.
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Fields Summary
private static final String
PROPNAME_SCROLL_X
private static final String
PROPNAME_SCROLL_Y
Constructors Summary
public ChangeScroll()
public ChangeScroll(android.content.Context context, android.util.AttributeSet attrs)

        super(context, attrs);
Methods Summary
public voidcaptureEndValues(android.transition.TransitionValues transitionValues)

        captureValues(transitionValues);
public voidcaptureStartValues(android.transition.TransitionValues transitionValues)

        captureValues(transitionValues);
private voidcaptureValues(android.transition.TransitionValues transitionValues)

        transitionValues.values.put(PROPNAME_SCROLL_X, transitionValues.view.getScrollX());
        transitionValues.values.put(PROPNAME_SCROLL_Y, transitionValues.view.getScrollY());
public android.animation.AnimatorcreateAnimator(android.view.ViewGroup sceneRoot, android.transition.TransitionValues startValues, android.transition.TransitionValues endValues)

        if (startValues == null || endValues == null) {
            return null;
        }
        final View view = endValues.view;
        int startX = (Integer) startValues.values.get(PROPNAME_SCROLL_X);
        int endX = (Integer) endValues.values.get(PROPNAME_SCROLL_X);
        int startY = (Integer) startValues.values.get(PROPNAME_SCROLL_Y);
        int endY = (Integer) endValues.values.get(PROPNAME_SCROLL_Y);
        Animator scrollXAnimator = null;
        Animator scrollYAnimator = null;
        if (startX != endX) {
            view.setScrollX(startX);
            scrollXAnimator = ObjectAnimator.ofInt(view, "scrollX", startX, endX);
        }
        if (startY != endY) {
            view.setScrollY(startY);
            scrollYAnimator = ObjectAnimator.ofInt(view, "scrollY", startY, endY);
        }
        return TransitionUtils.mergeAnimators(scrollXAnimator, scrollYAnimator);