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Android Animations and Transitions The Transitions Framework Transitioning Back and Forth

In the Activity below, we want to enable a transition back and forth between two scenes when a button is clicked. Note t

can you please help with this whole challenge i am lost

public class MainActivity extends Activity {

    protected TransitionManager mTransitionManager;
    protected Scene mScene1;
    protected Scene mScene2;
    protected Scene mCurrentScene;
    protected TransitionSet mForwardSet;
    protected TransitionSet mBackwardSet;

    // Some code omitted for brevity

    public void onButtonClicked(View view) {
        if (mCurrentScene == mScene2) {
            mCurrentScene = mScene1;
        else {
            mCurrentScene = mScene2;


    protected void setupTransitions() {
        // These methods are setting up scenes and transitions sets like in the video

        // Start here!


1 Answer

Rares Conea
Rares Conea
Courses Plus Student 15,000 Points

Add below "Start here!" : mTransitionManager = new TransitionManager(); mTransitionManager.setTransition(mScene1, mScene2, mForwardSet); mTransitionManager.setTransition(mScene2, mScene1, mBackwardSet); mScene1.enter(); Add at the end of onButtonClicked: mTransitionManager.transitionTo(mCurrentScene);