Create transition example

transitionEx.java

package com.bisapp.android_animations;

import android.os.Bundle;
import android.transition.ChangeBounds;
import android.transition.Fade;
import android.transition.Scene;
import android.transition.Transition;
import android.transition.TransitionManager;
import android.transition.TransitionSet;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.FrameLayout;

import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;

import org.jetbrains.annotations.NotNull;

public class TransitionExFragment extends Fragment {

    private Scene firstScene;
    private Scene secondScene;
    private FrameLayout sceneRoot;
    private boolean transitionStarted;

    @Override
    public View onCreateView(
            LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState
    ) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_transition, container, false);
    }

    public void onViewCreated(@NonNull final View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        createScene(view);


        final TransitionSet transitionSet = getTransitionSet();

        transitionStarted = false;
        view.findViewById(R.id.goBtn).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                transitionStarted = !transitionStarted;

                if (transitionStarted){
                    TransitionManager.go(secondScene,transitionSet);
                }else {
                    TransitionManager.go(firstScene,transitionSet);
                }

            }
        });


    }

    @NotNull
    private TransitionSet getTransitionSet() {
        final ChangeBounds changeBounds = new ChangeBounds();
        final TransitionSet transitionSet = new TransitionSet();
        transitionSet.addTransition(changeBounds);
        transitionSet.addTransition(new Fade());
        return transitionSet;
    }

    private void createScene(@NonNull View view) {
        // Create the scene root for the scenes in this app
        sceneRoot = view.findViewById(R.id.scene_root);

        // Create the scenes
        firstScene = Scene.getSceneForLayout(sceneRoot,R.layout.first_scene,getContext());
        secondScene = Scene.getSceneForLayout(sceneRoot,R.layout.second_scene,getContext());
    }


}