BrowseFragment.java revision 5f15bc26bec463ef6ece44e8c90d5c63988ae16b 
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 */
14package com.example.android.leanback;
15
16import android.app.Fragment;
17import android.content.Intent;
18import android.os.Bundle;
19import android.os.Handler;
20import android.support.v17.leanback.app.GuidedStepFragment;
21import android.support.v17.leanback.app.RowsFragment;
22import android.support.v17.leanback.widget.ArrayObjectAdapter;
23import android.support.v17.leanback.widget.DividerRow;
24import android.support.v17.leanback.widget.HeaderItem;
25import android.support.v17.leanback.widget.ImageCardView;
26import android.support.v17.leanback.widget.ListRow;
27import android.support.v17.leanback.widget.ListRowPresenter;
28import android.support.v17.leanback.widget.OnItemViewClickedListener;
29import android.support.v17.leanback.widget.OnItemViewSelectedListener;
30import android.support.v17.leanback.widget.PageRow;
31import android.support.v17.leanback.widget.Presenter;
32import android.support.v17.leanback.widget.Row;
33import android.support.v17.leanback.widget.RowPresenter;
34import android.support.v17.leanback.widget.SectionRow;
35import android.support.v4.app.ActivityOptionsCompat;
36import android.util.Log;
37import android.view.LayoutInflater;
38import android.view.View;
39import android.view.ViewGroup;
40
41public class BrowseFragment extends android.support.v17.leanback.app.BrowseFragment {
42    private static final String TAG = "leanback.BrowseFragment";
43
44    private static final boolean TEST_ENTRANCE_TRANSITION = true;
45    private static final int NUM_ROWS = 8;
46    private static final long HEADER_ID1 = 1001;
47    private static final long HEADER_ID2 = 1002;
48    private static final long HEADER_ID3 = 1003;
49
50    private ArrayObjectAdapter mRowsAdapter;
51    private BackgroundHelper mBackgroundHelper = new BackgroundHelper();
52
53    // For good performance, it's important to use a single instance of
54    // a card presenter for all rows using that presenter.
55    final CardPresenter mCardPresenter = new CardPresenter();
56    final CardPresenter mCardPresenter2 = new CardPresenter(R.style.MyImageCardViewTheme);
57
58    public BrowseFragment() {
59        getMainFragmentRegistry().registerFragment(PageRow.class, new PageRowFragmentFactory());
60    }
61
62    @Override
63    public void onCreate(Bundle savedInstanceState) {
64        Log.i(TAG, "onCreate");
65        super.onCreate(savedInstanceState);
66
67        setBadgeDrawable(getActivity().getResources().getDrawable(R.drawable.ic_title));
68        setTitle("Leanback Sample App");
69        setHeadersState(HEADERS_ENABLED);
70        setupRows();
71        setOnSearchClickedListener(new View.OnClickListener() {
72            @Override
73            public void onClick(View view) {
74                Intent intent = new Intent(getActivity(), SearchActivity.class);
75                startActivity(intent);
76            }
77        });
78
79        setOnItemViewClickedListener(new ItemViewClickedListener());
80        setOnItemViewSelectedListener(new OnItemViewSelectedListener() {
81            @Override
82            public void onItemSelected(Presenter.ViewHolder itemViewHolder, Object item,
83                    RowPresenter.ViewHolder rowViewHolder, Row row) {
84                Log.i(TAG, "onItemSelected: " + item + " row " + row);
85
86                if (isShowingHeaders()) {
87                    mBackgroundHelper.setBackground(getActivity(), null);
88                } else if (item instanceof PhotoItem) {
89                    mBackgroundHelper.setBackground(
90                            getActivity(), ((PhotoItem) item).getImageResourceId());
91                }
92            }
93        });
94        if (TEST_ENTRANCE_TRANSITION) {
95            // don't run entrance transition if fragment is restored.
96            if (savedInstanceState == null) {
97                prepareEntranceTransition();
98            }
99        }
100
101        // simulates in a real world use case  data being loaded two seconds later
102        new Handler().postDelayed(new Runnable() {
103            public void run() {
104                loadData();
105                startEntranceTransition();
106            }
107        }, 2000);
108    }
109
110    @Override
111    public View onCreateView(
112            LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
113        return super.onCreateView(inflater, container, savedInstanceState);
114    }
115
116    private void setupRows() {
117        ListRowPresenter listRowPresenter = new ListRowPresenter();
118        listRowPresenter.setNumRows(2);
119        mRowsAdapter = new ArrayObjectAdapter(listRowPresenter);
120        setAdapter(mRowsAdapter);
121    }
122
123    private void loadData() {
124        int i = 0;
125
126        mRowsAdapter.add(new PageRow(new HeaderItem(HEADER_ID1, "Page Row 0")));
127        mRowsAdapter.add(new DividerRow());
128
129        mRowsAdapter.add(new SectionRow(new HeaderItem("section 0")));
130        for (; i < NUM_ROWS; ++i) {
131            mRowsAdapter.add(new ListRow(new HeaderItem(i, "Row " + i), createListRowAdapter(i)));
132        }
133
134        mRowsAdapter.add(new DividerRow());
135        mRowsAdapter.add(new PageRow(new HeaderItem(HEADER_ID2, "Page Row 1")));
136
137        mRowsAdapter.add(new PageRow(new HeaderItem(HEADER_ID3, "Page Row 2")));
138    }
139
140    private ArrayObjectAdapter createListRowAdapter(int i) {
141        ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter((i & 1) == 0 ?
142                mCardPresenter : mCardPresenter2);
143        listRowAdapter.add(new PhotoItem(
144                "Hello world",
145                R.drawable.gallery_photo_1));
146        listRowAdapter.add(new PhotoItem(
147                "This is a test",
148                "Only a test",
149                R.drawable.gallery_photo_2));
150        listRowAdapter.add(new PhotoItem(
151                "Android TV",
152                "by Google",
153                R.drawable.gallery_photo_3));
154        listRowAdapter.add(new PhotoItem(
155                "Leanback",
156                R.drawable.gallery_photo_4));
157        listRowAdapter.add(new PhotoItem(
158                "GuidedStep (Slide left/right)",
159                R.drawable.gallery_photo_5));
160        listRowAdapter.add(new PhotoItem(
161                "GuidedStep (Slide bottom up)",
162                "Open GuidedStepFragment",
163                R.drawable.gallery_photo_6));
164        listRowAdapter.add(new PhotoItem(
165                "Android TV",
166                "open RowsActivity",
167                R.drawable.gallery_photo_7));
168        listRowAdapter.add(new PhotoItem(
169                "Leanback",
170                "open BrowseActivity",
171                R.drawable.gallery_photo_8));
172        listRowAdapter.add(new PhotoItem(
173                "Hello world",
174                R.drawable.gallery_photo_1));
175        listRowAdapter.add(new PhotoItem(
176                "This is a test",
177                "Only a test",
178                R.drawable.gallery_photo_2));
179        listRowAdapter.add(new PhotoItem(
180                "Android TV",
181                "by Google",
182                R.drawable.gallery_photo_3));
183        listRowAdapter.add(new PhotoItem(
184                "Leanback",
185                R.drawable.gallery_photo_4));
186        return listRowAdapter;
187    }
188
189    private final class ItemViewClickedListener implements OnItemViewClickedListener {
190        @Override
191        public void onItemClicked(Presenter.ViewHolder itemViewHolder, Object item,
192                RowPresenter.ViewHolder rowViewHolder, Row row) {
193
194            Intent intent;
195            Bundle bundle;
196            if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_6) {
197                GuidedStepFragment.add(getFragmentManager(),
198                        new GuidedStepHalfScreenActivity.FirstStepFragment(),
199                        R.id.lb_guidedstep_host);
200                return;
201            } else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_5) {
202                GuidedStepFragment.add(getFragmentManager(),
203                        new GuidedStepActivity.FirstStepFragment(), R.id.lb_guidedstep_host);
204                return;
205            } else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_8) {
206                intent = new Intent(getActivity(), BrowseActivity.class);
207                bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity())
208                        .toBundle();
209            } else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_7) {
210                intent = new Intent(getActivity(), RowsActivity.class);
211                bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity())
212                        .toBundle();
213            } else {
214                intent = new Intent(getActivity(), DetailsActivity.class);
215                intent.putExtra(DetailsActivity.EXTRA_ITEM, (PhotoItem) item);
216                bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(
217                        getActivity(),
218                        ((ImageCardView) itemViewHolder.view).getMainImageView(),
219                        DetailsActivity.SHARED_ELEMENT_NAME).toBundle();
220            }
221            getActivity().startActivity(intent, bundle);
222        }
223    }
224
225    public static class PageRowFragmentFactory extends FragmentFactory {
226
227        @Override
228        public Fragment createFragment(Object rowObj) {
229            Row row = (Row) rowObj;
230            if (row.getHeaderItem().getId() == HEADER_ID1) {
231                return new SampleRowsFragment();
232            } else if (row.getHeaderItem().getId() == HEADER_ID2) {
233                return new SampleRowsFragment();
234            } else if (row.getHeaderItem().getId() == HEADER_ID3) {
235                return new SampleFragment();
236            }
237
238            return null;
239        }
240    }
241
242    public static class SampleRowsFragment extends RowsFragment {
243        final CardPresenter mCardPresenter = new CardPresenter();
244        final CardPresenter mCardPresenter2 = new CardPresenter(R.style.MyImageCardViewTheme);
245
246        void loadFragmentData() {
247            ArrayObjectAdapter adapter = (ArrayObjectAdapter) getAdapter();
248            for (int i = 0; i < 4; i++) {
249                ListRow row = new ListRow(new HeaderItem("Row " + i), createListRowAdapter(i));
250                adapter.add(row);
251            }
252            if (getMainFragmentAdapter() != null) {
253                getMainFragmentAdapter().getFragmentHost()
254                        .notifyDataReady(getMainFragmentAdapter());
255            }
256        }
257
258        public SampleRowsFragment() {
259            ArrayObjectAdapter adapter = new ArrayObjectAdapter(new ListRowPresenter());
260            setAdapter(adapter);
261            // simulates late data loading:
262            new Handler().postDelayed(new Runnable() {
263                public void run() {
264                    loadFragmentData();
265                }
266            }, 500);
267
268            setOnItemViewClickedListener(new OnItemViewClickedListener() {
269                @Override
270                public void onItemClicked(
271                        Presenter.ViewHolder itemViewHolder,
272                        Object item,
273                        RowPresenter.ViewHolder rowViewHolder,
274                        Row row) {
275                    Intent intent;
276                    Bundle bundle;
277                    if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_6) {
278                        GuidedStepFragment.add(getActivity().getFragmentManager(),
279                                new GuidedStepHalfScreenActivity.FirstStepFragment(),
280                                R.id.lb_guidedstep_host);
281                        return;
282                    } else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_5) {
283                        GuidedStepFragment.add(getActivity().getFragmentManager(),
284                                new GuidedStepActivity.FirstStepFragment(), R.id.lb_guidedstep_host);
285                        return;
286                    } else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_8) {
287                        intent = new Intent(getActivity(), BrowseActivity.class);
288                        bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity())
289                                .toBundle();
290                    } else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_7) {
291                        intent = new Intent(getActivity(), RowsActivity.class);
292                        bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity())
293                                .toBundle();
294                    } else {
295                        intent = new Intent(getActivity(), DetailsActivity.class);
296                        intent.putExtra(DetailsActivity.EXTRA_ITEM, (PhotoItem) item);
297                        bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(
298                                getActivity(),
299                                ((ImageCardView) itemViewHolder.view).getMainImageView(),
300                                DetailsActivity.SHARED_ELEMENT_NAME).toBundle();
301                    }
302                    getActivity().startActivity(intent, bundle);
303                }
304            });
305        }
306
307        private ArrayObjectAdapter createListRowAdapter(int i) {
308            ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter((i & 1) == 0 ?
309                    mCardPresenter : mCardPresenter2);
310            listRowAdapter.add(new PhotoItem(
311                    "Hello world",
312                    R.drawable.gallery_photo_1));
313            listRowAdapter.add(new PhotoItem(
314                    "This is a test",
315                    "Only a test",
316                    R.drawable.gallery_photo_2));
317            listRowAdapter.add(new PhotoItem(
318                    "Android TV",
319                    "by Google",
320                    R.drawable.gallery_photo_3));
321            listRowAdapter.add(new PhotoItem(
322                    "Leanback",
323                    R.drawable.gallery_photo_4));
324            listRowAdapter.add(new PhotoItem(
325                    "GuidedStep (Slide left/right)",
326                    R.drawable.gallery_photo_5));
327            listRowAdapter.add(new PhotoItem(
328                    "GuidedStep (Slide bottom up)",
329                    "Open GuidedStepFragment",
330                    R.drawable.gallery_photo_6));
331            listRowAdapter.add(new PhotoItem(
332                    "Android TV",
333                    "open RowsActivity",
334                    R.drawable.gallery_photo_7));
335            listRowAdapter.add(new PhotoItem(
336                    "Leanback",
337                    "open BrowseActivity",
338                    R.drawable.gallery_photo_8));
339            return listRowAdapter;
340        }
341    }
342
343    public static class PageFragmentAdapterImpl extends MainFragmentAdapter<SampleFragment> {
344
345        public PageFragmentAdapterImpl(SampleFragment fragment) {
346            super(fragment);
347            setScalingEnabled(true);
348        }
349
350        @Override
351        public void setEntranceTransitionState(boolean state) {
352            getFragment().setEntranceTransitionState(state);
353        }
354    }
355
356    public static class SampleFragment extends Fragment implements MainFragmentAdapterProvider {
357
358        final PageFragmentAdapterImpl mMainFragmentAdapter = new PageFragmentAdapterImpl(this);
359
360        public void setEntranceTransitionState(boolean state) {
361            final View view = getView();
362            int visibility = state ? View.VISIBLE : View.INVISIBLE;
363            view.findViewById(R.id.tv1).setVisibility(visibility);
364            view.findViewById(R.id.tv2).setVisibility(visibility);
365            view.findViewById(R.id.tv3).setVisibility(visibility);
366        }
367
368        @Override
369        public View onCreateView(
370                final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
371            View view = inflater.inflate(R.layout.page_fragment, container, false);
372            view.findViewById(R.id.tv1).setOnClickListener(new View.OnClickListener() {
373                @Override
374                public void onClick(View view) {
375                    Intent intent = new Intent(inflater.getContext(), GuidedStepActivity.class);
376                    startActivity(intent);
377                }
378            });
379
380            return view;
381        }
382
383        @Override
384        public void onViewCreated(View view, Bundle savedInstanceState) {
385            // static layout has view and data ready immediately
386            mMainFragmentAdapter.getFragmentHost().notifyViewCreated(mMainFragmentAdapter);
387            mMainFragmentAdapter.getFragmentHost().notifyDataReady(mMainFragmentAdapter);
388        }
389
390        @Override
391        public MainFragmentAdapter getMainFragmentAdapter() {
392            return mMainFragmentAdapter;
393        }
394    }
395}
396