Android ActivityOptions.makeSceneTransitionAnimation doesn't seem to exist

Question

Android L introduced a new animations feature: animating between similar Views in different activities. It's documented here.

I've tried to use ActivityOptions.makeSceneTransitionAnimation, but it doesn't seem to be visible in the SDK (or in the jar at all), so I tried using reflection, and it returns a null value.

Has anyone else got it working?

Cleanser

Say, does the support library have this cool feature? – Misplay

Answer 1

Okay, I got it working.

It seems like setting the value in styles.xml is completely ignored for now.

You'll need to do this in each Activity's onCreate till that's fixed

getWindow().requestFeature(Window.FEATURE_CONTENT_TRANSITIONS);
Transition transition = // load transition here.
getWindow().setSharedElementEnterTransition(transition);
getWindow().setSharedElementExitTransition(transition);

As per the same bug ViewAnimationUtils has, you'll see errors in Android Studio, it'll compile and run fine though.

Cleanser

Yeah it's a bug that android-l components are shown in android studio as errors but run without any problem. I created an issue for that & they already fixed it yesterday. They will bring an update soon :) – Jaenicke

Can u please share the code for loading the transition..? I can't find a full code example of shared element transitions done in activity.. – Chiles

How can you make it work with Listview ? @Cleanser – Fetterlock

@Chiles TransitionInflater.from(context).inflateTransition(R.transition.your_transition)); – Tortuous

Answer 2

We can got it working with theme config for v21. Put these items into res/values-v21/styles.xml

 <item name="android:windowContentTransitions">true</item>
 <item name="android:windowAllowEnterTransitionOverlap">true</item>
 <item name="android:windowAllowReturnTransitionOverlap">true</item>

Janusfaced

In which file did you define the above values? res/values/styles.xml? or res/values-v21/styles.xml? or somewhere else? – Voluptuous

res/values-v21/styles.xml – Janusfaced

the third one is meant to be: <item name="android:windowAllowReturnTransitionOverlap">true</item> – Shaina

Answer 3

Here is something work with 5.0 sdk got after 10/17/14.

But not sure what is the expected behavior if enable window content transitions and called setEnterTransition/setExitTransition in both mainActivity and secondActivity. If they are different (e.g one choose Explode and other choose Slide), which one would be applied?

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        /*
        To enable window content transitions in your code instead, call the Window.requestFeature() method:
         */
        getWindow().requestFeature(android.view.Window.FEATURE_CONTENT_TRANSITIONS);
        Transition ts = new Explode();  //Slide(); //Explode();

        ts.setStartDelay(2000);
        ts.setDuration(5000);

        /*
        If you have set an enter transition for the second activity,
        the transition is also activated when the activity starts.
         */

        getWindow().setEnterTransition(ts);
        getWindow().setExitTransition(ts);


        setContentView(R.layout.activity_main_view);
        if (savedInstanceState == null) {
            getFragmentManager().beginTransaction()
                    .add(R.id.container, mainViewFragment.newInstance())
                    .commit();
        }
    }

    public void launchSecondActivity() {

            /*
            If you enable transitions and set an exit transition for an activity,
            the transition is activated when you launch another activity as follows:
             */

            Intent listIntent = new Intent(this, secondActivity.class);
            startActivity(intent, ActivityOptions.makeSceneTransitionAnimation(this).toBundle());

        }

}

//===

public class secondActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        ///
        getWindow().requestFeature(android.view.Window.FEATURE_CONTENT_TRANSITIONS);
        Transition ts = new Slide();  //Slide(); //Explode();

        ts.setDuration(3000);

        getWindow().setEnterTransition(ts);
        getWindow().setExitTransition(ts);

        ///

        setContentView(R.layout.activity_scene_transition);
        if (savedInstanceState == null) {
            getFragmentManager().beginTransaction()
                    .add(R.id.container, new PlaceholderFragment())
                    .commit();
        }
    }

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