1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 package com.example.android.leanback; 15 16 import android.content.Intent; 17 import android.os.Bundle; 18 import android.support.v17.leanback.widget.ArrayObjectAdapter; 19 import android.support.v17.leanback.widget.HeaderItem; 20 import android.support.v17.leanback.widget.ImageCardView; 21 import android.support.v17.leanback.widget.ListRow; 22 import android.support.v17.leanback.widget.ListRowPresenter; 23 import android.support.v17.leanback.widget.OnItemViewClickedListener; 24 import android.support.v17.leanback.widget.OnItemViewSelectedListener; 25 import android.support.v17.leanback.widget.Presenter; 26 import android.support.v17.leanback.widget.Row; 27 import android.support.v17.leanback.widget.RowPresenter; 28 import android.support.v17.leanback.widget.TitleHelper; 29 import android.support.v4.app.ActivityOptionsCompat; 30 import android.util.Log; 31 32 public class RowsFragment extends android.support.v17.leanback.app.RowsFragment { 33 34 private static final String TAG = "leanback.RowsFragment"; 35 36 private static final int NUM_ROWS = 10; 37 // Row heights default to wrap content 38 private static final boolean USE_FIXED_ROW_HEIGHT = false; 39 40 private ArrayObjectAdapter mRowsAdapter; 41 private TitleHelper mTitleHelper; 42 setTitleHelper(TitleHelper titleHelper)43 public void setTitleHelper(TitleHelper titleHelper) { 44 mTitleHelper = titleHelper; 45 } 46 47 @Override onCreate(Bundle savedInstanceState)48 public void onCreate(Bundle savedInstanceState) { 49 Log.i(TAG, "onCreate"); 50 super.onCreate(savedInstanceState); 51 52 setupRows(); 53 setOnItemViewClickedListener(new ItemViewClickedListener()); 54 setOnItemViewSelectedListener(new OnItemViewSelectedListener() { 55 @Override 56 public void onItemSelected(Presenter.ViewHolder itemViewHolder, Object item, 57 RowPresenter.ViewHolder rowViewHolder, Row row) { 58 Log.i(TAG, "onItemSelected: " + item + " row " + row); 59 if (mTitleHelper != null) { 60 mTitleHelper.showTitle(getAdapter() == null || getAdapter().size() == 0 || 61 getAdapter().get(0) == row); 62 } 63 } 64 }); 65 } 66 setupRows()67 private void setupRows() { 68 ListRowPresenter lrp = new ListRowPresenter(); 69 70 // For good performance, it's important to use a single instance of 71 // a card presenter for all rows using that presenter. 72 final CardPresenter cardPresenter = new CardPresenter(); 73 74 if (USE_FIXED_ROW_HEIGHT) { 75 lrp.setRowHeight(cardPresenter.getRowHeight(getActivity())); 76 lrp.setExpandedRowHeight(cardPresenter.getExpandedRowHeight(getActivity())); 77 } 78 79 mRowsAdapter = new ArrayObjectAdapter(lrp); 80 81 for (int i = 0; i < NUM_ROWS; ++i) { 82 ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(cardPresenter); 83 listRowAdapter.add(new PhotoItem("Hello world", R.drawable.gallery_photo_1)); 84 listRowAdapter.add(new PhotoItem("This is a test", R.drawable.gallery_photo_2)); 85 listRowAdapter.add(new PhotoItem("Android TV", R.drawable.gallery_photo_3)); 86 listRowAdapter.add(new PhotoItem("Leanback", R.drawable.gallery_photo_4)); 87 listRowAdapter.add(new PhotoItem("Hello world", R.drawable.gallery_photo_5)); 88 listRowAdapter.add(new PhotoItem("This is a test", R.drawable.gallery_photo_6)); 89 listRowAdapter.add(new PhotoItem("Android TV", R.drawable.gallery_photo_7)); 90 listRowAdapter.add(new PhotoItem("Leanback", R.drawable.gallery_photo_8)); 91 HeaderItem header = new HeaderItem(i, "Row " + i); 92 mRowsAdapter.add(new ListRow(header, listRowAdapter)); 93 } 94 95 setAdapter(mRowsAdapter); 96 } 97 98 private final class ItemViewClickedListener implements OnItemViewClickedListener { 99 @Override onItemClicked(Presenter.ViewHolder itemViewHolder, Object item, RowPresenter.ViewHolder rowViewHolder, Row row)100 public void onItemClicked(Presenter.ViewHolder itemViewHolder, Object item, 101 RowPresenter.ViewHolder rowViewHolder, Row row) { 102 Intent intent = new Intent(getActivity(), DetailsActivity.class); 103 intent.putExtra(DetailsActivity.EXTRA_ITEM, (PhotoItem) item); 104 105 Bundle bundle = ActivityOptionsCompat.makeSceneTransitionAnimation( 106 getActivity(), 107 ((ImageCardView)itemViewHolder.view).getMainImageView(), 108 DetailsActivity.SHARED_ELEMENT_NAME).toBundle(); 109 getActivity().startActivity(intent, bundle); 110 } 111 } 112 } 113