Java tutorial
/* * 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.tvleanback2.ui; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.media.MediaMetadata; import android.media.session.MediaController; import android.media.session.PlaybackState; import android.os.Bundle; import android.os.Handler; import android.support.annotation.NonNull; import android.support.v17.leanback.widget.AbstractDetailsDescriptionPresenter; import android.support.v17.leanback.widget.Action; import android.support.v17.leanback.widget.ArrayObjectAdapter; import android.support.v17.leanback.widget.ClassPresenterSelector; import android.support.v17.leanback.widget.ControlButtonPresenterSelector; import android.support.v17.leanback.widget.HeaderItem; import android.support.v17.leanback.widget.ImageCardView; import android.support.v17.leanback.widget.ListRow; import android.support.v17.leanback.widget.ListRowPresenter; import android.support.v17.leanback.widget.OnActionClickedListener; import android.support.v17.leanback.widget.OnItemViewClickedListener; import android.support.v17.leanback.widget.OnItemViewSelectedListener; import android.support.v17.leanback.widget.PlaybackControlsRow; import android.support.v17.leanback.widget.PlaybackControlsRow.ClosedCaptioningAction; import android.support.v17.leanback.widget.PlaybackControlsRow.FastForwardAction; import android.support.v17.leanback.widget.PlaybackControlsRow.HighQualityAction; import android.support.v17.leanback.widget.PlaybackControlsRow.MoreActions; import android.support.v17.leanback.widget.PlaybackControlsRow.PlayPauseAction; import android.support.v17.leanback.widget.PlaybackControlsRow.RepeatAction; import android.support.v17.leanback.widget.PlaybackControlsRow.RewindAction; import android.support.v17.leanback.widget.PlaybackControlsRow.ShuffleAction; import android.support.v17.leanback.widget.PlaybackControlsRow.SkipNextAction; import android.support.v17.leanback.widget.PlaybackControlsRow.SkipPreviousAction; import android.support.v17.leanback.widget.PlaybackControlsRow.ThumbsDownAction; import android.support.v17.leanback.widget.PlaybackControlsRow.ThumbsUpAction; import android.support.v17.leanback.widget.PlaybackControlsRowPresenter; import android.support.v17.leanback.widget.Presenter; import android.support.v17.leanback.widget.Row; import android.support.v17.leanback.widget.RowPresenter; import android.support.v4.app.ActivityOptionsCompat; import android.util.Log; import com.bumptech.glide.Glide; import com.bumptech.glide.load.resource.drawable.GlideDrawable; import com.bumptech.glide.request.animation.GlideAnimation; import com.bumptech.glide.request.target.SimpleTarget; import com.example.android.tvleanback2.R; import com.example.android.tvleanback2.data.VideoProvider; import com.example.android.tvleanback2.model.Movie; import com.example.android.tvleanback2.presenter.CardPresenter; import java.util.Timer; import java.util.TimerTask; /* * The PlaybackOverlayFragment class handles the Fragment associated with displaying the UI for the * media controls such as play / pause / skip forward / skip backward etc. * * The UI is updated through events that it receives from its MediaController */ public class PlaybackOverlayFragment extends android.support.v17.leanback.app.PlaybackOverlayFragment { private static final String TAG = "PlaybackOverlayFragment"; private static final boolean SHOW_DETAIL = true; private static final boolean HIDE_MORE_ACTIONS = false; private static final int BACKGROUND_TYPE = PlaybackOverlayFragment.BG_LIGHT; private static final int CARD_WIDTH = 150; private static final int CARD_HEIGHT = 240; private static final int DEFAULT_UPDATE_PERIOD = 1000; private static final int UPDATE_PERIOD = 16; private static final int SIMULATED_BUFFERED_TIME = 10000; private static final int CLICK_TRACKING_DELAY = 1000; private static final int INITIAL_SPEED = 10000; private final Handler mClickTrackingHandler = new Handler(); private ArrayObjectAdapter mRowsAdapter; private ArrayObjectAdapter mPrimaryActionsAdapter; private ArrayObjectAdapter mSecondaryActionsAdapter; private ClosedCaptioningAction mClosedCaptioningAction; private FastForwardAction mFastForwardAction; private HighQualityAction mHighQualityAction; private MoreActions mMoreActions; private PlayPauseAction mPlayPauseAction; private RepeatAction mRepeatAction; private RewindAction mRewindAction; private ShuffleAction mShuffleAction; private SkipNextAction mSkipNextAction; private SkipPreviousAction mSkipPreviousAction; private ThumbsDownAction mThumbsDownAction; private ThumbsUpAction mThumbsUpAction; private PlaybackControlsRow mPlaybackControlsRow; private Handler mHandler; private Runnable mRunnable; private Movie mSelectedMovie; private int mFfwRwdSpeed = INITIAL_SPEED; private Timer mClickTrackingTimer; private int mClickCount; private MediaController mMediaController; private final MediaController.Callback mMediaControllerCallback = new MediaControllerCallback(); @Override public void onCreate(Bundle savedInstanceState) { Log.i(TAG, "onCreate"); super.onCreate(savedInstanceState); mSelectedMovie = getActivity().getIntent().getParcelableExtra(MovieDetailsActivity.MOVIE); VideoProvider.setQueue(mSelectedMovie); mHandler = new Handler(); setBackgroundType(BACKGROUND_TYPE); setFadingEnabled(false); setupRows(); setOnItemViewSelectedListener(new OnItemViewSelectedListener() { @Override public void onItemSelected(Presenter.ViewHolder itemViewHolder, Object item, RowPresenter.ViewHolder rowViewHolder, Row row) { Log.i(TAG, "onItemSelected: " + item + " row " + row); } }); setOnItemViewClickedListener(new ItemViewClickedListener()); } @Override public void onAttach(Context context) { super.onAttach(context); Activity activity = (Activity) context; mMediaController = activity.getMediaController(); Log.d(TAG, "register callback of mediaController"); mMediaController.registerCallback(mMediaControllerCallback); } @Override public void onStop() { stopProgressAutomation(); mRowsAdapter = null; super.onStop(); } @Override public void onDetach() { if (mMediaController != null) { Log.d(TAG, "unregister callback of mediaController"); mMediaController.unregisterCallback(mMediaControllerCallback); } super.onDetach(); } private void setupRows() { ClassPresenterSelector ps = new ClassPresenterSelector(); PlaybackControlsRowPresenter playbackControlsRowPresenter; if (SHOW_DETAIL) { playbackControlsRowPresenter = new PlaybackControlsRowPresenter(new DescriptionPresenter()); } else { playbackControlsRowPresenter = new PlaybackControlsRowPresenter(); } playbackControlsRowPresenter.setOnActionClickedListener(new OnActionClickedListener() { public void onActionClicked(Action action) { if (action.getId() == mPlayPauseAction.getId()) { togglePlayback(mPlayPauseAction.getIndex() == PlayPauseAction.PLAY); } else if (action.getId() == mSkipNextAction.getId()) { next(); } else if (action.getId() == mSkipPreviousAction.getId()) { prev(); } else if (action.getId() == mFastForwardAction.getId()) { fastForward(); } else if (action.getId() == mRewindAction.getId()) { fastRewind(); } if (action instanceof PlaybackControlsRow.MultiAction) { notifyChanged(action); } } }); playbackControlsRowPresenter.setSecondaryActionsHidden(HIDE_MORE_ACTIONS); ps.addClassPresenter(PlaybackControlsRow.class, playbackControlsRowPresenter); ps.addClassPresenter(ListRow.class, new ListRowPresenter()); mRowsAdapter = new ArrayObjectAdapter(ps); addPlaybackControlsRow(); // addOtherRows(); // // setAdapter(mRowsAdapter); } private void togglePlayback(boolean playPause) { if (playPause) { mMediaController.getTransportControls().play(); } else { mMediaController.getTransportControls().pause(); } } private void addPlaybackControlsRow() { if (SHOW_DETAIL) { mPlaybackControlsRow = new PlaybackControlsRow(mSelectedMovie); } else { mPlaybackControlsRow = new PlaybackControlsRow(); } mRowsAdapter.add(mPlaybackControlsRow); updatePlaybackRow(); ControlButtonPresenterSelector presenterSelector = new ControlButtonPresenterSelector(); mPrimaryActionsAdapter = new ArrayObjectAdapter(presenterSelector); mSecondaryActionsAdapter = new ArrayObjectAdapter(presenterSelector); mPlaybackControlsRow.setPrimaryActionsAdapter(mPrimaryActionsAdapter); mPlaybackControlsRow.setSecondaryActionsAdapter(mSecondaryActionsAdapter); Activity activity = getActivity(); mPlayPauseAction = new PlayPauseAction(activity); mRepeatAction = new RepeatAction(activity); mThumbsUpAction = new ThumbsUpAction(activity); mThumbsDownAction = new ThumbsDownAction(activity); mShuffleAction = new ShuffleAction(activity); mSkipNextAction = new SkipNextAction(activity); mSkipPreviousAction = new SkipPreviousAction(activity); mFastForwardAction = new FastForwardAction(activity); mRewindAction = new RewindAction(activity); mHighQualityAction = new HighQualityAction(activity); mClosedCaptioningAction = new ClosedCaptioningAction(activity); mMoreActions = new MoreActions(activity); // Add main controls to primary adapter. mPrimaryActionsAdapter.add(mSkipPreviousAction); mPrimaryActionsAdapter.add(mRewindAction); mPrimaryActionsAdapter.add(mPlayPauseAction); mPrimaryActionsAdapter.add(mFastForwardAction); mPrimaryActionsAdapter.add(mSkipNextAction); // Add rest of controls to secondary adapter. mSecondaryActionsAdapter.add(mThumbsUpAction); mSecondaryActionsAdapter.add(mRepeatAction); mSecondaryActionsAdapter.add(mShuffleAction); mSecondaryActionsAdapter.add(mThumbsDownAction); mSecondaryActionsAdapter.add(mHighQualityAction); mSecondaryActionsAdapter.add(mClosedCaptioningAction); mSecondaryActionsAdapter.add(mMoreActions); } private void notifyChanged(Action action) { int index = mPrimaryActionsAdapter.indexOf(action); if (index >= 0) { mPrimaryActionsAdapter.notifyArrayItemRangeChanged(index, 1); } else { index = mSecondaryActionsAdapter.indexOf(action); if (index >= 0) { mSecondaryActionsAdapter.notifyArrayItemRangeChanged(index, 1); } } } private void updatePlaybackRow() { mPlaybackControlsRow.setCurrentTime(0); mPlaybackControlsRow.setBufferedProgress(0); mRowsAdapter.notifyArrayItemRangeChanged(0, 1); } private void updateMovieView(String title, String studio, String cardImageUrl, long duration) { if (mPlaybackControlsRow.getItem() != null) { Movie item = (Movie) mPlaybackControlsRow.getItem(); item.setTitle(title); item.setStudio(studio); } mPlaybackControlsRow.setTotalTime((int) duration); // Show the video card image if there is enough room in the UI for it. // If you have many primary actions, you may not have enough room. updateVideoImage(cardImageUrl); } private void addOtherRows() { ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(new CardPresenter()); for (Movie movie : VideoProvider.getCurrentQueue()) { listRowAdapter.add(movie); } HeaderItem header = new HeaderItem(0, getString(R.string.related_movies)); mRowsAdapter.add(new ListRow(header, listRowAdapter)); } private int getUpdatePeriod() { // if (getView() == null || mPlaybackControlsRow.getTotalTime() <= 0) { return DEFAULT_UPDATE_PERIOD; // } // return Math.max(UPDATE_PERIOD, mPlaybackControlsRow.getTotalTime() / getView().getWidth()); } private void startProgressAutomation() { if (mRunnable == null) { mRunnable = new Runnable() { @Override public void run() { int updatePeriod = getUpdatePeriod(); int currentTime = mPlaybackControlsRow.getCurrentTime() + updatePeriod; int totalTime = mPlaybackControlsRow.getTotalTime(); mPlaybackControlsRow.setCurrentTime(currentTime); mPlaybackControlsRow.setBufferedProgress(currentTime + SIMULATED_BUFFERED_TIME); if (totalTime > 0 && totalTime <= currentTime) { stopProgressAutomation(); next(); } else { mHandler.postDelayed(this, updatePeriod); } } }; mHandler.postDelayed(mRunnable, getUpdatePeriod()); } } private void next() { mMediaController.getTransportControls().skipToNext(); } private void prev() { mMediaController.getTransportControls().skipToPrevious(); } private void fastForward() { startClickTrackingTimer(); mMediaController.getTransportControls().fastForward(); } private void fastRewind() { startClickTrackingTimer(); mMediaController.getTransportControls().rewind(); } private void stopProgressAutomation() { if (mHandler != null && mRunnable != null) { mHandler.removeCallbacks(mRunnable); mRunnable = null; } } private void updateVideoImage(String uri) { Glide.with(this).load(uri).centerCrop().into(new SimpleTarget<GlideDrawable>(CARD_WIDTH, CARD_HEIGHT) { @Override public void onResourceReady(GlideDrawable resource, GlideAnimation<? super GlideDrawable> glideAnimation) { mPlaybackControlsRow.setImageDrawable(resource); mRowsAdapter.notifyArrayItemRangeChanged(0, mRowsAdapter.size()); } }); } private void startClickTrackingTimer() { if (null != mClickTrackingTimer) { mClickCount++; mClickTrackingTimer.cancel(); } else { mClickCount = 0; mFfwRwdSpeed = INITIAL_SPEED; } mClickTrackingTimer = new Timer(); mClickTrackingTimer.schedule(new UpdateFfwRwdSpeedTask(), CLICK_TRACKING_DELAY); } private static class DescriptionPresenter extends AbstractDetailsDescriptionPresenter { @Override protected void onBindDescription(ViewHolder viewHolder, Object item) { viewHolder.getTitle().setText(((Movie) item).getTitle()); viewHolder.getSubtitle().setText(((Movie) item).getStudio()); } } private class UpdateFfwRwdSpeedTask extends TimerTask { @Override public void run() { mClickTrackingHandler.post(new Runnable() { @Override public void run() { if (mClickCount == 0) { mFfwRwdSpeed = INITIAL_SPEED; } else if (mClickCount == 1) { mFfwRwdSpeed *= 2; } else if (mClickCount >= 2) { mFfwRwdSpeed *= 4; } mClickCount = 0; mClickTrackingTimer = null; } }); } } private final class ItemViewClickedListener implements OnItemViewClickedListener { @Override public void onItemClicked(Presenter.ViewHolder itemViewHolder, Object item, RowPresenter.ViewHolder rowViewHolder, Row row) { if (item instanceof Movie) { Movie movie = (Movie) item; Log.d(TAG, "Item: " + item.toString()); Intent intent = new Intent(getActivity(), PlaybackOverlayActivity.class); intent.putExtra(MovieDetailsActivity.MOVIE, movie); Bundle bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity(), ((ImageCardView) itemViewHolder.view).getMainImageView(), MovieDetailsActivity.SHARED_ELEMENT_NAME).toBundle(); getActivity().startActivity(intent, bundle); } } } private class MediaControllerCallback extends MediaController.Callback { @Override public void onPlaybackStateChanged(@NonNull PlaybackState state) { // The playback state has changed, so update your UI accordingly. // This should not update any media player / state! Log.d(TAG, "Playback state changed: " + state.getState()); int nextState = state.getState(); if (nextState == PlaybackState.STATE_PLAYING) { startProgressAutomation(); setFadingEnabled(true); mPlayPauseAction.setIndex(PlayPauseAction.PAUSE); mPlayPauseAction.setIcon(mPlayPauseAction.getDrawable(PlayPauseAction.PAUSE)); notifyChanged(mPlayPauseAction); } else if (nextState == PlaybackState.STATE_PAUSED) { stopProgressAutomation(); setFadingEnabled(false); mPlayPauseAction.setIndex(PlayPauseAction.PLAY); mPlayPauseAction.setIcon(mPlayPauseAction.getDrawable(PlayPauseAction.PLAY)); notifyChanged(mPlayPauseAction); } else if (nextState == PlaybackState.STATE_SKIPPING_TO_NEXT) { startProgressAutomation(); setFadingEnabled(true); notifyChanged(mSkipNextAction); } else if (nextState == PlaybackState.STATE_SKIPPING_TO_PREVIOUS) { startProgressAutomation(); setFadingEnabled(true); notifyChanged(mSkipPreviousAction); } int currentTime = (int) state.getPosition(); mPlaybackControlsRow.setCurrentTime(currentTime); mPlaybackControlsRow.setBufferedProgress(currentTime + SIMULATED_BUFFERED_TIME); } @Override public void onMetadataChanged(MediaMetadata metadata) { Log.d(TAG, "received update of media metadata"); updateMovieView(metadata.getString(MediaMetadata.METADATA_KEY_DISPLAY_TITLE), metadata.getString(MediaMetadata.METADATA_KEY_DISPLAY_SUBTITLE), metadata.getString(MediaMetadata.METADATA_KEY_DISPLAY_ICON_URI), metadata.getLong(MediaMetadata.METADATA_KEY_DURATION)); } } }