prebuilts/androidtv/leanback/app/src/main/java/com/example/android/leanback/VerticalGridFragment.java

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package com.example.android.leanback;

import java.util.*;

import android.content.Intent;
import android.os.Bundle;
import android.support.v17.leanback.widget.ArrayObjectAdapter;
import android.support.v17.leanback.widget.OnItemClickedListener;
import android.support.v17.leanback.widget.OnItemSelectedListener;
import android.support.v17.leanback.widget.Row;
import android.support.v17.leanback.widget.VerticalGridPresenter;
import android.util.Log;

/*
 * VerticalGridFragment shows a grid of videos
 */
public class VerticalGridFragment extends android.support.v17.leanback.app.VerticalGridFragment {
    private static final String TAG = "VerticalGridFragment";

    private static final int NUM_COLUMNS = 5;

    private ArrayObjectAdapter mAdapter;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        Log.i(TAG, "onCreate");
        super.onCreate(savedInstanceState);

        setTitle(getString(R.string.vertical_grid_title));

        setupFragment();
    }

    private void setupFragment() {
        VerticalGridPresenter gridPresenter = new VerticalGridPresenter();
        gridPresenter.setNumberOfColumns(NUM_COLUMNS);
        setGridPresenter(gridPresenter);

        mAdapter = new ArrayObjectAdapter(new CardPresenter());

        long seed = System.nanoTime();

        HashMap<String, List<Movie>> movies = VideoProvider.getMovieList();

        for (Map.Entry<String, List<Movie>> entry : movies.entrySet())
        {
            List<Movie> list = entry.getValue();
            Collections.shuffle(list, new Random(seed));
            for (int j = 0; j < list.size(); j++) {
                mAdapter.add(list.get(j));
            }
        }

        setAdapter(mAdapter);

        setOnItemSelectedListener(new OnItemSelectedListener() {
            @Override
            public void onItemSelected(Object item, Row row) {
            }
        });

        setOnItemClickedListener(new OnItemClickedListener() {
            @Override
            public void onItemClicked(Object item, Row row) {
                if (item instanceof Movie) {
                    Movie movie = (Movie) item;
                    Intent intent = new Intent(getActivity(), DetailsActivity.class);
                    intent.putExtra(getString(R.string.movie), movie);
                    startActivity(intent);
                }
            }
        });

    }

}