NavigationalTransitionActivity.java

package com.github.takahirom.materialelement.pattern.transition;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.content.Intent;
import android.graphics.ColorMatrixColorFilter;
import android.os.Bundle;
import android.support.design.widget.CollapsingToolbarLayout;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.ActivityOptionsCompat;
import android.support.v4.view.ViewCompat;
import android.support.v4.view.animation.FastOutSlowInInterpolator;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.DividerItemDecoration;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.transition.Transition;
import android.view.View;
import android.widget.ImageView;

import com.github.takahirom.materialelement.MaterialElementActivity;
import com.github.takahirom.materialelement.R;
import com.github.takahirom.materialelement.animation.ObservableColorMatrix;
import com.github.takahirom.materialelement.animation.OnetimeViewTreeObserver;
import com.github.takahirom.materialelement.animation.transition.TransitionUtils;
import com.github.takahirom.materialelement.main.ImplementationItem;
import com.github.takahirom.materialelement.util.ThemeUtil;

public class NavigationalTransitionActivity extends MaterialElementActivity {

    public final static String RESULT_EXTRA_ITEM_ID = "RESULT_EXTRA_ITEM_ID";
    public static final String INTENT_EXTRA_ITEM = "item";
    private ImplementationItem item;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_navigational_transition);
        item = getIntent().getParcelableExtra(INTENT_EXTRA_ITEM);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        setupViews();
    }

    public void setupViews() {
        final CollapsingToolbarLayout collapsingToolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
        TransitionUtils.setSharedElementEnterTransitionEndListenerCompat(getWindow(), new TransitionUtils.OnSharedElementEnterTransitionEndListener() {
            @Override
            public void onEnd(Transition transition) {
                collapsingToolbarLayout.setTitleEnabled(true);
                collapsingToolbarLayout.setTitle(item.title);

                // FIXME: recycler view breaks AppbarLayout
                setupRecyclerView();
            }
        });

        final ImageView imageView = (ImageView) findViewById(R.id.detail_image);
//        collapsingToolbarLayout.setExpandedTitleColor(ContextCompat.getColor(DurationAndEasingActivity.this, android.R.color.white));

        imageView.setImageResource(item.imageRes);

    }

    private void setupRecyclerView() {
        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
        recyclerView.setVisibility(View.VISIBLE);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        recyclerView.setAdapter(new RecyclerViewAdapter(new RecyclerViewAdapter.OnItemClickListener() {
            @Override
            public void onClick(int position, View view) {
                Intent intent = new Intent(NavigationalTransitionActivity.this, ChildActivity.class);
                String elementName = getString(R.string.transition_name_navigational_transition);
                ActivityOptionsCompat activityOptionsCompat = ActivityOptionsCompat.makeSceneTransitionAnimation(NavigationalTransitionActivity.this, view, elementName);
                startActivity(intent, activityOptionsCompat.toBundle());
            }
        }));
        recyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));
    }


    @Override
    public void onBackPressed() {
        setResultAndFinish();
    }


    void setResultAndFinish() {
        final Intent resultData = new Intent();
        resultData.putExtra(RESULT_EXTRA_ITEM_ID, item.itemId);
        setResult(RESULT_OK, resultData);
        ActivityCompat.finishAfterTransition(this);
    }

}