Hero Transitions not working Android Lollipop

问题:

I tried to make animations/transitions between activities but I couldn't make it perfect and good. And I couldn't find any helping guide. Can you tell me how to create an ActivityOptions tranistion, like this: http://3.bp.blogspot.com/-dadidlU3muU/VE6og4Ra_BI/AAAAAAAAA8E/uVCWrYMetGI/s400/herotransition.gif

Step by step? Thanks.

回答1:

You need two shared elements:

1. The card (the entire card) from the list view will be shared and mapped to the root view of the detail view activity. You can transition that with a ChangeBounds.
2. The ImageView from the list view will be shared and mapped to the ImageView in the detail view activity. You can use a TransitionSet with both ChangeBounds and ChangeImageTransform.

That means that your activity options will look something like this:

ActivityOptions.makeSceneTransition(YourActivity.this, Pair.create(yourCardViewInstance, "cardView"), Pair.create(yourImageViewInstance, "imageView")

Finally, make sure that the views in your second activity have transition names that match those in your ActivityOptions. E.g.

<FrameLayout
    android:transitionName="cardView">
    <ImageView
      android:transitionName="ImageView">
...