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.app.Fragment; 17 import android.content.Intent; 18 import android.os.Bundle; 19 import android.os.Handler; 20 import android.util.Log; 21 import android.view.LayoutInflater; 22 import android.view.View; 23 import android.view.ViewGroup; 24 25 import androidx.core.app.ActivityOptionsCompat; 26 import androidx.core.content.res.ResourcesCompat; 27 import androidx.leanback.app.GuidedStepFragment; 28 import androidx.leanback.app.RowsFragment; 29 import androidx.leanback.widget.ArrayObjectAdapter; 30 import androidx.leanback.widget.DividerRow; 31 import androidx.leanback.widget.HeaderItem; 32 import androidx.leanback.widget.ImageCardView; 33 import androidx.leanback.widget.ListRow; 34 import androidx.leanback.widget.ListRowPresenter; 35 import androidx.leanback.widget.OnItemViewClickedListener; 36 import androidx.leanback.widget.OnItemViewSelectedListener; 37 import androidx.leanback.widget.PageRow; 38 import androidx.leanback.widget.Presenter; 39 import androidx.leanback.widget.Row; 40 import androidx.leanback.widget.RowPresenter; 41 import androidx.leanback.widget.SectionRow; 42 43 public class BrowseFragment extends androidx.leanback.app.BrowseFragment { 44 private static final String TAG = "leanback.BrowseFragment"; 45 46 private static final boolean TEST_ENTRANCE_TRANSITION = true; 47 private static final int NUM_ROWS = 8; 48 private static final long HEADER_ID1 = 1001; 49 private static final long HEADER_ID2 = 1002; 50 private static final long HEADER_ID3 = 1003; 51 52 private ArrayObjectAdapter mRowsAdapter; 53 private BackgroundHelper mBackgroundHelper; 54 55 // For good performance, it's important to use a single instance of 56 // a card presenter for all rows using that presenter. 57 final CardPresenter mCardPresenter = new CardPresenter(); 58 final CardPresenter mCardPresenter2 = new CardPresenter(R.style.MyImageCardViewTheme); 59 60 public BrowseFragment() { 61 getMainFragmentRegistry().registerFragment(PageRow.class, new PageRowFragmentFactory()); 62 } 63 64 @Override 65 public void onCreate(Bundle savedInstanceState) { 66 Log.i(TAG, "onCreate"); 67 super.onCreate(savedInstanceState); 68 69 mBackgroundHelper = new BackgroundHelper(getActivity()); 70 mBackgroundHelper.attachToWindow(); 71 72 setBadgeDrawable(ResourcesCompat.getDrawable(getActivity().getResources(), 73 R.drawable.ic_title, getActivity().getTheme())); 74 setTitle("Leanback Sample App"); 75 setHeadersState(HEADERS_ENABLED); 76 setOnSearchClickedListener(new View.OnClickListener() { 77 @Override 78 public void onClick(View view) { 79 Intent intent = new Intent(getActivity(), SearchActivity.class); 80 startActivity(intent); 81 } 82 }); 83 84 setOnItemViewClickedListener(new ItemViewClickedListener()); 85 setOnItemViewSelectedListener(new OnItemViewSelectedListener() { 86 @Override 87 public void onItemSelected(Presenter.ViewHolder itemViewHolder, Object item, 88 RowPresenter.ViewHolder rowViewHolder, Row row) { 89 Log.i(TAG, "onItemSelected: " + item + " row " + row); 90 91 updateBackgroundToSelection(); 92 } 93 }); 94 setBrowseTransitionListener(new BrowseTransitionListener() { 95 @Override 96 public void onHeadersTransitionStop(boolean withHeaders) { 97 updateBackgroundToSelection(); 98 } 99 }); 100 if (TEST_ENTRANCE_TRANSITION) { 101 // don't run entrance transition if fragment is restored. 102 if (savedInstanceState == null) { 103 prepareEntranceTransition(); 104 } 105 } 106 107 // simulates in a real world use case data being loaded two seconds later 108 new Handler().postDelayed(new Runnable() { 109 @Override 110 public void run() { 111 setupRows(); 112 loadData(); 113 startEntranceTransition(); 114 } 115 }, 2000); 116 } 117 118 @Override 119 public void onStart() { 120 super.onStart(); 121 updateBackgroundToSelection(); 122 } 123 124 void updateBackgroundToSelection() { 125 if (!isShowingHeaders()) { 126 RowPresenter.ViewHolder rowViewHolder = getSelectedRowViewHolder(); 127 Object item = rowViewHolder == null ? null : rowViewHolder.getSelectedItem(); 128 if (item != null) { 129 mBackgroundHelper.setBackground(((PhotoItem) item).getImageResourceId()); 130 } else { 131 mBackgroundHelper.clearDrawable(); 132 } 133 } else { 134 mBackgroundHelper.clearDrawable(); 135 } 136 } 137 138 @Override 139 public View onCreateView( 140 LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 141 return super.onCreateView(inflater, container, savedInstanceState); 142 } 143 144 private void setupRows() { 145 ListRowPresenter listRowPresenter = new ListRowPresenter(); 146 listRowPresenter.setNumRows(1); 147 mRowsAdapter = new ArrayObjectAdapter(listRowPresenter); 148 } 149 150 private void loadData() { 151 int i = 0; 152 153 mRowsAdapter.add(new PageRow(new HeaderItem(HEADER_ID1, "Page Row 0"))); 154 mRowsAdapter.add(new DividerRow()); 155 156 mRowsAdapter.add(new SectionRow(new HeaderItem("section 0"))); 157 for (; i < NUM_ROWS; ++i) { 158 HeaderItem headerItem = new HeaderItem(i, "Row " + i); 159 headerItem.setDescription("Description for Row "+i); 160 mRowsAdapter.add(new ListRow(headerItem, createListRowAdapter(i))); 161 } 162 163 mRowsAdapter.add(new DividerRow()); 164 mRowsAdapter.add(new PageRow(new HeaderItem(HEADER_ID2, "Page Row 1"))); 165 166 mRowsAdapter.add(new PageRow(new HeaderItem(HEADER_ID3, "Page Row 2"))); 167 setAdapter(mRowsAdapter); 168 } 169 170 private ArrayObjectAdapter createListRowAdapter(int i) { 171 ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter((i & 1) == 0 ? 172 mCardPresenter : mCardPresenter2); 173 listRowAdapter.add(new PhotoItem( 174 "Hello world", 175 R.drawable.gallery_photo_1)); 176 listRowAdapter.add(new PhotoItem( 177 "This is a test", 178 "Only a test", 179 R.drawable.gallery_photo_2)); 180 listRowAdapter.add(new PhotoItem( 181 "Android TV", 182 "by Google", 183 R.drawable.gallery_photo_3)); 184 listRowAdapter.add(new PhotoItem( 185 "Leanback", 186 R.drawable.gallery_photo_4)); 187 listRowAdapter.add(new PhotoItem( 188 "GuidedStep (Slide left/right)", 189 R.drawable.gallery_photo_5)); 190 listRowAdapter.add(new PhotoItem( 191 "GuidedStep (Slide bottom up)", 192 "Open GuidedStepFragment", 193 R.drawable.gallery_photo_6)); 194 listRowAdapter.add(new PhotoItem( 195 "Android TV", 196 "open RowsActivity", 197 R.drawable.gallery_photo_7)); 198 listRowAdapter.add(new PhotoItem( 199 "Leanback", 200 "open BrowseActivity", 201 R.drawable.gallery_photo_8)); 202 listRowAdapter.add(new PhotoItem( 203 "Hello world", 204 R.drawable.gallery_photo_1)); 205 listRowAdapter.add(new PhotoItem( 206 "This is a test", 207 "Only a test", 208 R.drawable.gallery_photo_2)); 209 listRowAdapter.add(new PhotoItem( 210 "Android TV", 211 "by Google", 212 R.drawable.gallery_photo_3)); 213 listRowAdapter.add(new PhotoItem( 214 "Leanback", 215 R.drawable.gallery_photo_4)); 216 return listRowAdapter; 217 } 218 219 private final class ItemViewClickedListener implements OnItemViewClickedListener { 220 @Override 221 public void onItemClicked(Presenter.ViewHolder itemViewHolder, Object item, 222 RowPresenter.ViewHolder rowViewHolder, Row row) { 223 224 Intent intent; 225 Bundle bundle; 226 if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_6) { 227 GuidedStepFragment.add(getFragmentManager(), 228 new GuidedStepHalfScreenActivity.FirstStepFragment(), 229 R.id.lb_guidedstep_host); 230 return; 231 } else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_5) { 232 GuidedStepFragment.add(getFragmentManager(), 233 new GuidedStepActivity.FirstStepFragment(), R.id.lb_guidedstep_host); 234 return; 235 } else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_8) { 236 intent = new Intent(getActivity(), BrowseActivity.class); 237 bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity()) 238 .toBundle(); 239 } else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_7) { 240 intent = new Intent(getActivity(), RowsActivity.class); 241 bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity()) 242 .toBundle(); 243 } else { 244 intent = new Intent(getActivity(), DetailsActivity.class); 245 intent.putExtra(DetailsActivity.EXTRA_ITEM, (PhotoItem) item); 246 bundle = ActivityOptionsCompat.makeSceneTransitionAnimation( 247 getActivity(), 248 ((ImageCardView) itemViewHolder.view).getMainImageView(), 249 DetailsActivity.SHARED_ELEMENT_NAME).toBundle(); 250 } 251 getActivity().startActivity(intent, bundle); 252 } 253 } 254 255 public static class PageRowFragmentFactory extends FragmentFactory { 256 257 @Override 258 public Fragment createFragment(Object rowObj) { 259 Row row = (Row) rowObj; 260 if (row.getHeaderItem().getId() == HEADER_ID1) { 261 return new SampleRowsFragment(); 262 } else if (row.getHeaderItem().getId() == HEADER_ID2) { 263 return new SampleRowsFragment(); 264 } else if (row.getHeaderItem().getId() == HEADER_ID3) { 265 return new SampleFragment(); 266 } 267 268 return null; 269 } 270 } 271 272 public static class SampleRowsFragment extends RowsFragment { 273 final CardPresenter mCardPresenter = new CardPresenter(); 274 final CardPresenter mCardPresenter2 = new CardPresenter(R.style.MyImageCardViewTheme); 275 276 void loadFragmentData() { 277 ArrayObjectAdapter adapter = new ArrayObjectAdapter(new ListRowPresenter()); 278 for (int i = 0; i < 4; i++) { 279 ListRow row = new ListRow(new HeaderItem("Row " + i), createListRowAdapter(i)); 280 adapter.add(row); 281 } 282 if (getMainFragmentAdapter() != null) { 283 getMainFragmentAdapter().getFragmentHost() 284 .notifyDataReady(getMainFragmentAdapter()); 285 } 286 setAdapter(adapter); 287 } 288 289 public SampleRowsFragment() { 290 // simulates late data loading: 291 new Handler().postDelayed(new Runnable() { 292 @Override 293 public void run() { 294 loadFragmentData(); 295 } 296 }, 500); 297 298 setOnItemViewClickedListener(new OnItemViewClickedListener() { 299 @Override 300 public void onItemClicked( 301 Presenter.ViewHolder itemViewHolder, 302 Object item, 303 RowPresenter.ViewHolder rowViewHolder, 304 Row row) { 305 Intent intent; 306 Bundle bundle; 307 if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_6) { 308 GuidedStepFragment.add(getActivity().getFragmentManager(), 309 new GuidedStepHalfScreenActivity.FirstStepFragment(), 310 R.id.lb_guidedstep_host); 311 return; 312 } else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_5) { 313 GuidedStepFragment.add(getActivity().getFragmentManager(), 314 new GuidedStepActivity.FirstStepFragment(), R.id.lb_guidedstep_host); 315 return; 316 } else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_8) { 317 intent = new Intent(getActivity(), BrowseActivity.class); 318 bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity()) 319 .toBundle(); 320 } else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_7) { 321 intent = new Intent(getActivity(), RowsActivity.class); 322 bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity()) 323 .toBundle(); 324 } else { 325 intent = new Intent(getActivity(), DetailsActivity.class); 326 intent.putExtra(DetailsActivity.EXTRA_ITEM, (PhotoItem) item); 327 bundle = ActivityOptionsCompat.makeSceneTransitionAnimation( 328 getActivity(), 329 ((ImageCardView) itemViewHolder.view).getMainImageView(), 330 DetailsActivity.SHARED_ELEMENT_NAME).toBundle(); 331 } 332 getActivity().startActivity(intent, bundle); 333 } 334 }); 335 } 336 337 private ArrayObjectAdapter createListRowAdapter(int i) { 338 ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter((i & 1) == 0 ? 339 mCardPresenter : mCardPresenter2); 340 listRowAdapter.add(new PhotoItem( 341 "Hello world", 342 R.drawable.gallery_photo_1)); 343 listRowAdapter.add(new PhotoItem( 344 "This is a test", 345 "Only a test", 346 R.drawable.gallery_photo_2)); 347 listRowAdapter.add(new PhotoItem( 348 "Android TV", 349 "by Google", 350 R.drawable.gallery_photo_3)); 351 listRowAdapter.add(new PhotoItem( 352 "Leanback", 353 R.drawable.gallery_photo_4)); 354 listRowAdapter.add(new PhotoItem( 355 "GuidedStep (Slide left/right)", 356 R.drawable.gallery_photo_5)); 357 listRowAdapter.add(new PhotoItem( 358 "GuidedStep (Slide bottom up)", 359 "Open GuidedStepFragment", 360 R.drawable.gallery_photo_6)); 361 listRowAdapter.add(new PhotoItem( 362 "Android TV", 363 "open RowsActivity", 364 R.drawable.gallery_photo_7)); 365 listRowAdapter.add(new PhotoItem( 366 "Leanback", 367 "open BrowseActivity", 368 R.drawable.gallery_photo_8)); 369 return listRowAdapter; 370 } 371 } 372 373 public static class PageFragmentAdapterImpl extends MainFragmentAdapter<SampleFragment> { 374 375 public PageFragmentAdapterImpl(SampleFragment fragment) { 376 super(fragment); 377 setScalingEnabled(true); 378 } 379 380 @Override 381 public void setEntranceTransitionState(boolean state) { 382 getFragment().setEntranceTransitionState(state); 383 } 384 } 385 386 public static class SampleFragment extends Fragment implements MainFragmentAdapterProvider { 387 388 final PageFragmentAdapterImpl mMainFragmentAdapter = new PageFragmentAdapterImpl(this); 389 390 public void setEntranceTransitionState(boolean state) { 391 final View view = getView(); 392 int visibility = state ? View.VISIBLE : View.INVISIBLE; 393 view.findViewById(R.id.tv1).setVisibility(visibility); 394 view.findViewById(R.id.tv2).setVisibility(visibility); 395 view.findViewById(R.id.tv3).setVisibility(visibility); 396 } 397 398 @Override 399 public View onCreateView( 400 final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 401 View view = inflater.inflate(R.layout.page_fragment, container, false); 402 view.findViewById(R.id.tv1).setOnClickListener(new View.OnClickListener() { 403 @Override 404 public void onClick(View view) { 405 Intent intent = new Intent(inflater.getContext(), GuidedStepActivity.class); 406 startActivity(intent); 407 } 408 }); 409 410 return view; 411 } 412 413 @Override 414 public void onViewCreated(View view, Bundle savedInstanceState) { 415 // static layout has view and data ready immediately 416 mMainFragmentAdapter.getFragmentHost().notifyViewCreated(mMainFragmentAdapter); 417 mMainFragmentAdapter.getFragmentHost().notifyDataReady(mMainFragmentAdapter); 418 } 419 420 @Override 421 public MainFragmentAdapter getMainFragmentAdapter() { 422 return mMainFragmentAdapter; 423 } 424 } 425 } 426
