samples/SupportLeanbackShowcase/app/src/main/java/android/support/v17/leanback/supportleanbackshowcase/MainFragment.java - platform/frameworks/support - Git at Google

 /*
  * Copyright (C) 2015 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 android.support.v17.leanback.supportleanbackshowcase;

 import android.app.Fragment;
 import android.content.Intent;
 import android.graphics.Color;
 import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.os.Handler;
 import android.support.v17.leanback.app.BackgroundManager;
 import android.support.v17.leanback.app.BrowseFragment;
 import android.support.v17.leanback.supportleanbackshowcase.cards.models.Card;
 import android.support.v17.leanback.supportleanbackshowcase.cards.models.CardRow;
 import android.support.v17.leanback.supportleanbackshowcase.cards.presenters.CardPresenterSelector;
 import android.support.v17.leanback.widget.ArrayObjectAdapter;
 import android.support.v17.leanback.widget.ListRow;
 import android.support.v17.leanback.widget.ListRowPresenter;
 import android.support.v17.leanback.widget.OnItemViewClickedListener;
 import android.support.v17.leanback.widget.OnItemViewSelectedListener;
 import android.support.v17.leanback.widget.Presenter;
 import android.support.v17.leanback.widget.PresenterSelector;
 import android.support.v17.leanback.widget.Row;
 import android.support.v17.leanback.widget.RowPresenter;
 import android.util.DisplayMetrics;
 import android.util.Log;

 import com.google.gson.Gson;
 import com.squareup.picasso.Picasso;
 import com.squareup.picasso.Target;

 import java.net.URI;
 import java.util.Timer;
 import java.util.TimerTask;


 public class MainFragment extends BrowseFragment {

     public static final String VIDEO_SURFACE_FRAGMENT_TAG = "VIDEO_SURFACE";
     private static final String TAG = "MainFragment";
     private static final int BACKGROUND_UPDATE_DELAY = 300;
     private static final int DEFAULT_BACKGROUND_IMAGE = R.drawable.default_background;
     private final Handler mHandler = new Handler();
     private ArrayObjectAdapter mRowsAdapter;
     private Target mBackgroundTarget;
     private Timer mBackgroundTimer;
     private URI mBackgroundURI;
     private BackgroundManager mBackgroundManager;
     private DisplayMetrics mMetrics;

     @Override public void onActivityCreated(Bundle savedInstanceState) {
         if (Constants.LOCAL_LOGD) Log.d(TAG, "onActivityCreated");
         super.onActivityCreated(savedInstanceState);

         setupBackgroundManager();
         setupUIElements();
         setupRowAdapter();
         setupEventListeners();
     }

     @Override public void onDestroy() {
         super.onDestroy();
         if (null != mBackgroundTimer) {
             if (Constants.LOCAL_LOGD) Log.d(TAG, "onDestroy: " + mBackgroundTimer.toString());
             mBackgroundTimer.cancel();
         }
     }

     private void setupRowAdapter() {
         mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());
         createRows();
         setAdapter(mRowsAdapter);
     }

     private void createRows() {
         String json = Utils
                 .inputStreamToString(getResources().openRawResource(R.raw.cards_launcher));
         CardRow[] rows = new Gson().fromJson(json, CardRow[].class);
         for (CardRow row : rows) {
             mRowsAdapter.add(createCardRow(row));
         }
     }

     private ListRow createCardRow(CardRow cardRow) {
         PresenterSelector presenterSelector = new CardPresenterSelector(getActivity());
         ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(presenterSelector);
         for (Card card : cardRow.getCards()) {
             listRowAdapter.add(card);
         }
         return new ListRow(listRowAdapter);
     }

     private void setupBackgroundManager() {
         mBackgroundManager = BackgroundManager.getInstance(getActivity());
         mBackgroundManager.setThemeDrawableResourceId(DEFAULT_BACKGROUND_IMAGE);
         mBackgroundManager.attach(getActivity().getWindow());

         mBackgroundTarget = new PicassoBackgroundManagerTarget(mBackgroundManager);
         mMetrics = new DisplayMetrics();
         getActivity().getWindowManager().getDefaultDisplay().getMetrics(mMetrics);
         getView().setBackgroundResource(R.drawable.bg_living_room_wide);
         //updateBackgroundImage(R.drawable.bg_living_room_wide);
     }

     private void setupUIElements() {
         setTitle(getString(R.string.browse_title));
         setBadgeDrawable(getResources().getDrawable(R.drawable.title_android_tv, null));
         setHeadersState(HEADERS_DISABLED);
         setHeadersTransitionOnBackEnabled(false);
         setBrandColor(getResources().getColor(R.color.fastlane_background));
     }

     private void setupEventListeners() {
         setOnItemViewClickedListener(new ItemViewClickedListener());
         setOnItemViewSelectedListener(new ItemViewSelectedListener());
     }

     protected void updateBackgroundImage(URI uri) {
         // Deactivated until we decide whether to load a background image from an URL or resource. @hahnr
         if (true) return;
         Picasso.with(getActivity()).load(uri.toString())
                .resize(mMetrics.widthPixels, mMetrics.heightPixels).centerCrop()
                .error(DEFAULT_BACKGROUND_IMAGE).into(mBackgroundTarget);
     }

     protected void updateBackgroundImage(Drawable drawable) {
         mBackgroundManager.setDrawable(drawable);
     }

     protected void updateBackgroundImage(int resId) {
         mBackgroundManager.setDrawable(getResources().getDrawable(resId, null));
     }

     private void startBackgroundTimer() {
         if (null != mBackgroundTimer) {
             mBackgroundTimer.cancel();
         }
         mBackgroundTimer = new Timer();
         mBackgroundTimer.schedule(new UpdateBackgroundTask(), BACKGROUND_UPDATE_DELAY);
     }

     private final class ItemViewClickedListener implements OnItemViewClickedListener {

         @Override public void onItemClicked(Presenter.ViewHolder itemViewHolder, Object item,
                                             RowPresenter.ViewHolder rowViewHolder, Row row) {
             Card card = (Card) item;
             int id = card.getId();
             switch (id) {
                 case 0: {
                     updateBackgroundImage(new ColorDrawable(
                             getResources().getColor(R.color.card_examples_background)));
                     Fragment fragment = new CardExampleFragment();
                     getFragmentManager().beginTransaction()
                                         .replace(R.id.fragmentContainer, fragment)
                                         .addToBackStack(null).commit();
                     break;
                 }
                 case 2: {
                     updateBackgroundImage(
                             getResources().getDrawable(R.drawable.background_canyon, null));
                     Fragment fragment = new GridExample();
                     getFragmentManager().beginTransaction()
                                         .replace(R.id.fragmentContainer, fragment)
                                         .addToBackStack(null).commit();
                     break;
                 }
                 case 3: {
                     Intent intent = new Intent(getActivity().getBaseContext(),
                             DetailViewExampleActivity.class);
                     startActivity(intent);
                     break;
                 }
                 case 4: {
                     updateBackgroundImage(
                             getResources().getDrawable(R.drawable.background_canyon, null));
                     Fragment fragment = new VideoConsumptionExampleFragment();
                     getFragmentManager().beginTransaction()
                                         .replace(R.id.fragmentContainer, new VideoSurfaceFragment(),
                                                  VIDEO_SURFACE_FRAGMENT_TAG)
                                         .add(R.id.fragmentContainer, fragment).addToBackStack(null)
                                         .commit();
                     break;
                 }
                 case 5: {
                     updateBackgroundImage(
                             getResources().getDrawable(R.drawable.background_sax, null));
                     Fragment fragment = new MusicConsumptionExampleFragment();
                     getFragmentManager().beginTransaction()
                                         .replace(R.id.fragmentContainer, fragment)
                                         .addToBackStack(null).commit();
                     break;
                 }
                 case 6: {
                     // Let's create a new Wizard for a given Movie. The movie can come from any sort
                     // of data source. To simplify this example we decode it from a JSON source
                     // which might be loaded from a server in a real world example.
                     Intent intent = new Intent(getActivity().getBaseContext(),
                             WizardExampleActivity.class);

                     // Prepare extras which contains the Movie and will be passed to the Activity
                     // which is started through the Intent/.
                     Bundle extras = new Bundle();
                     String json = Utils.inputStreamToString(
                             getResources().openRawResource(R.raw.wizard_example));
                     Movie movie = new Gson().fromJson(json, Movie.class);
                     extras.putSerializable("movie", movie);
                     intent.putExtras(extras);

                     // Finally, start the wizard Activity.
                     startActivity(intent);
                     break;
                 }
                 case 7: {
                     Intent intent = new Intent(getActivity().getBaseContext(),
                             SettingsExampleActivity.class);
                     startActivity(intent);
                     break;
                 }
                 case 8: {
                     Intent intent = new Intent(getActivity().getBaseContext(),
                             DialogExampleActivity.class);
                     startActivity(intent);
                     break;
                 }
                 default:
                     break;
             }
         }
     }

     private final class ItemViewSelectedListener implements OnItemViewSelectedListener {

         @Override public void onItemSelected(Presenter.ViewHolder itemViewHolder, Object item,
                                              RowPresenter.ViewHolder rowViewHolder, Row row) {
         }
     }

     private class UpdateBackgroundTask extends TimerTask {

         @Override public void run() {
             mHandler.post(new Runnable() {
                 @Override public void run() {
                     if (mBackgroundURI != null) {
                         updateBackgroundImage(mBackgroundURI);
                     }
                 }
             });
         }
     }
 }
	/*
	* Copyright (C) 2015 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 android.support.v17.leanback.supportleanbackshowcase;

	import android.app.Fragment;
	import android.content.Intent;
	import android.graphics.Color;
	import android.graphics.drawable.ColorDrawable;
	import android.graphics.drawable.Drawable;
	import android.os.Bundle;
	import android.os.Handler;
	import android.support.v17.leanback.app.BackgroundManager;
	import android.support.v17.leanback.app.BrowseFragment;
	import android.support.v17.leanback.supportleanbackshowcase.cards.models.Card;
	import android.support.v17.leanback.supportleanbackshowcase.cards.models.CardRow;
	import android.support.v17.leanback.supportleanbackshowcase.cards.presenters.CardPresenterSelector;
	import android.support.v17.leanback.widget.ArrayObjectAdapter;
	import android.support.v17.leanback.widget.ListRow;
	import android.support.v17.leanback.widget.ListRowPresenter;
	import android.support.v17.leanback.widget.OnItemViewClickedListener;
	import android.support.v17.leanback.widget.OnItemViewSelectedListener;
	import android.support.v17.leanback.widget.Presenter;
	import android.support.v17.leanback.widget.PresenterSelector;
	import android.support.v17.leanback.widget.Row;
	import android.support.v17.leanback.widget.RowPresenter;
	import android.util.DisplayMetrics;
	import android.util.Log;

	import com.google.gson.Gson;
	import com.squareup.picasso.Picasso;
	import com.squareup.picasso.Target;

	import java.net.URI;
	import java.util.Timer;
	import java.util.TimerTask;


	public class MainFragment extends BrowseFragment {

	public static final String VIDEO_SURFACE_FRAGMENT_TAG = "VIDEO_SURFACE";
	private static final String TAG = "MainFragment";
	private static final int BACKGROUND_UPDATE_DELAY = 300;
	private static final int DEFAULT_BACKGROUND_IMAGE = R.drawable.default_background;
	private final Handler mHandler = new Handler();
	private ArrayObjectAdapter mRowsAdapter;
	private Target mBackgroundTarget;
	private Timer mBackgroundTimer;
	private URI mBackgroundURI;
	private BackgroundManager mBackgroundManager;
	private DisplayMetrics mMetrics;

	@Override public void onActivityCreated(Bundle savedInstanceState) {
	if (Constants.LOCAL_LOGD) Log.d(TAG, "onActivityCreated");
	super.onActivityCreated(savedInstanceState);

	setupBackgroundManager();
	setupUIElements();
	setupRowAdapter();
	setupEventListeners();
	}

	@Override public void onDestroy() {
	super.onDestroy();
	if (null != mBackgroundTimer) {
	if (Constants.LOCAL_LOGD) Log.d(TAG, "onDestroy: " + mBackgroundTimer.toString());
	mBackgroundTimer.cancel();
	}
	}

	private void setupRowAdapter() {
	mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());
	createRows();
	setAdapter(mRowsAdapter);
	}

	private void createRows() {
	String json = Utils
	.inputStreamToString(getResources().openRawResource(R.raw.cards_launcher));
	CardRow[] rows = new Gson().fromJson(json, CardRow[].class);
	for (CardRow row : rows) {
	mRowsAdapter.add(createCardRow(row));
	}
	}

	private ListRow createCardRow(CardRow cardRow) {
	PresenterSelector presenterSelector = new CardPresenterSelector(getActivity());
	ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(presenterSelector);
	for (Card card : cardRow.getCards()) {
	listRowAdapter.add(card);
	}
	return new ListRow(listRowAdapter);
	}

	private void setupBackgroundManager() {
	mBackgroundManager = BackgroundManager.getInstance(getActivity());
	mBackgroundManager.setThemeDrawableResourceId(DEFAULT_BACKGROUND_IMAGE);
	mBackgroundManager.attach(getActivity().getWindow());

	mBackgroundTarget = new PicassoBackgroundManagerTarget(mBackgroundManager);
	mMetrics = new DisplayMetrics();
	getActivity().getWindowManager().getDefaultDisplay().getMetrics(mMetrics);
	getView().setBackgroundResource(R.drawable.bg_living_room_wide);
	//updateBackgroundImage(R.drawable.bg_living_room_wide);
	}

	private void setupUIElements() {
	setTitle(getString(R.string.browse_title));
	setBadgeDrawable(getResources().getDrawable(R.drawable.title_android_tv, null));
	setHeadersState(HEADERS_DISABLED);
	setHeadersTransitionOnBackEnabled(false);
	setBrandColor(getResources().getColor(R.color.fastlane_background));
	}

	private void setupEventListeners() {
	setOnItemViewClickedListener(new ItemViewClickedListener());
	setOnItemViewSelectedListener(new ItemViewSelectedListener());
	}

	protected void updateBackgroundImage(URI uri) {
	// Deactivated until we decide whether to load a background image from an URL or resource. @hahnr
	if (true) return;
	Picasso.with(getActivity()).load(uri.toString())
	.resize(mMetrics.widthPixels, mMetrics.heightPixels).centerCrop()
	.error(DEFAULT_BACKGROUND_IMAGE).into(mBackgroundTarget);
	}

	protected void updateBackgroundImage(Drawable drawable) {
	mBackgroundManager.setDrawable(drawable);
	}

	protected void updateBackgroundImage(int resId) {
	mBackgroundManager.setDrawable(getResources().getDrawable(resId, null));
	}

	private void startBackgroundTimer() {
	if (null != mBackgroundTimer) {
	mBackgroundTimer.cancel();
	}
	mBackgroundTimer = new Timer();
	mBackgroundTimer.schedule(new UpdateBackgroundTask(), BACKGROUND_UPDATE_DELAY);
	}

	private final class ItemViewClickedListener implements OnItemViewClickedListener {

	@Override public void onItemClicked(Presenter.ViewHolder itemViewHolder, Object item,
	RowPresenter.ViewHolder rowViewHolder, Row row) {
	Card card = (Card) item;
	int id = card.getId();
	switch (id) {
	case 0: {
	updateBackgroundImage(new ColorDrawable(
	getResources().getColor(R.color.card_examples_background)));
	Fragment fragment = new CardExampleFragment();
	getFragmentManager().beginTransaction()
	.replace(R.id.fragmentContainer, fragment)
	.addToBackStack(null).commit();
	break;
	}
	case 2: {
	updateBackgroundImage(
	getResources().getDrawable(R.drawable.background_canyon, null));
	Fragment fragment = new GridExample();
	getFragmentManager().beginTransaction()
	.replace(R.id.fragmentContainer, fragment)
	.addToBackStack(null).commit();
	break;
	}
	case 3: {
	Intent intent = new Intent(getActivity().getBaseContext(),
	DetailViewExampleActivity.class);
	startActivity(intent);
	break;
	}
	case 4: {
	updateBackgroundImage(
	getResources().getDrawable(R.drawable.background_canyon, null));
	Fragment fragment = new VideoConsumptionExampleFragment();
	getFragmentManager().beginTransaction()
	.replace(R.id.fragmentContainer, new VideoSurfaceFragment(),
	VIDEO_SURFACE_FRAGMENT_TAG)
	.add(R.id.fragmentContainer, fragment).addToBackStack(null)
	.commit();
	break;
	}
	case 5: {
	updateBackgroundImage(
	getResources().getDrawable(R.drawable.background_sax, null));
	Fragment fragment = new MusicConsumptionExampleFragment();
	getFragmentManager().beginTransaction()
	.replace(R.id.fragmentContainer, fragment)
	.addToBackStack(null).commit();
	break;
	}
	case 6: {
	// Let's create a new Wizard for a given Movie. The movie can come from any sort
	// of data source. To simplify this example we decode it from a JSON source
	// which might be loaded from a server in a real world example.
	Intent intent = new Intent(getActivity().getBaseContext(),
	WizardExampleActivity.class);

	// Prepare extras which contains the Movie and will be passed to the Activity
	// which is started through the Intent/.
	Bundle extras = new Bundle();
	String json = Utils.inputStreamToString(
	getResources().openRawResource(R.raw.wizard_example));
	Movie movie = new Gson().fromJson(json, Movie.class);
	extras.putSerializable("movie", movie);
	intent.putExtras(extras);

	// Finally, start the wizard Activity.
	startActivity(intent);
	break;
	}
	case 7: {
	Intent intent = new Intent(getActivity().getBaseContext(),
	SettingsExampleActivity.class);
	startActivity(intent);
	break;
	}
	case 8: {
	Intent intent = new Intent(getActivity().getBaseContext(),
	DialogExampleActivity.class);
	startActivity(intent);
	break;
	}
	default:
	break;
	}
	}
	}

	private final class ItemViewSelectedListener implements OnItemViewSelectedListener {

	@Override public void onItemSelected(Presenter.ViewHolder itemViewHolder, Object item,
	RowPresenter.ViewHolder rowViewHolder, Row row) {
	}
	}

	private class UpdateBackgroundTask extends TimerTask {

	@Override public void run() {
	mHandler.post(new Runnable() {
	@Override public void run() {
	if (mBackgroundURI != null) {
	updateBackgroundImage(mBackgroundURI);
	}
	}
	});
	}
	}
	}