/
TrackSelectionDialog.java
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/
TrackSelectionDialog.java
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/*
* Copyright (C) 2019 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.google.android.exoplayer2.demo;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.res.Resources;
import android.os.Bundle;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatDialog;
import androidx.fragment.app.DialogFragment;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentPagerAdapter;
import androidx.viewpager.widget.ViewPager;
import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.Player;
import com.google.android.exoplayer2.Tracks;
import com.google.android.exoplayer2.source.TrackGroup;
import com.google.android.exoplayer2.trackselection.TrackSelectionOverride;
import com.google.android.exoplayer2.trackselection.TrackSelectionParameters;
import com.google.android.exoplayer2.ui.TrackSelectionView;
import com.google.android.material.tabs.TabLayout;
import com.google.common.collect.ImmutableList;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Dialog to select tracks.
*
* @deprecated com.google.android.exoplayer2 is deprecated. Please migrate to androidx.media3 (which
* contains the same ExoPlayer code). See <a
* href="https://developer.android.com/guide/topics/media/media3/getting-started/migration-guide">the
* migration guide</a> for more details, including a script to help with the migration.
*/
@Deprecated
public final class TrackSelectionDialog extends DialogFragment {
/** Called when tracks are selected. */
public interface TrackSelectionListener {
/**
* Called when tracks are selected.
*
* @param trackSelectionParameters A {@link TrackSelectionParameters} representing the selected
* tracks. Any manual selections are defined by {@link
* TrackSelectionParameters#disabledTrackTypes} and {@link
* TrackSelectionParameters#overrides}.
*/
void onTracksSelected(TrackSelectionParameters trackSelectionParameters);
}
public static final ImmutableList<Integer> SUPPORTED_TRACK_TYPES =
ImmutableList.of(C.TRACK_TYPE_VIDEO, C.TRACK_TYPE_AUDIO, C.TRACK_TYPE_TEXT);
private final SparseArray<TrackSelectionViewFragment> tabFragments;
private final ArrayList<Integer> tabTrackTypes;
private int titleId;
private DialogInterface.OnClickListener onClickListener;
private DialogInterface.OnDismissListener onDismissListener;
/**
* Returns whether a track selection dialog will have content to display if initialized with the
* specified {@link Player}.
*/
public static boolean willHaveContent(Player player) {
return willHaveContent(player.getCurrentTracks());
}
/**
* Returns whether a track selection dialog will have content to display if initialized with the
* specified {@link Tracks}.
*/
public static boolean willHaveContent(Tracks tracks) {
for (Tracks.Group trackGroup : tracks.getGroups()) {
if (SUPPORTED_TRACK_TYPES.contains(trackGroup.getType())) {
return true;
}
}
return false;
}
/**
* Creates a dialog for a given {@link Player}, whose parameters will be automatically updated
* when tracks are selected.
*
* @param player The {@link Player}.
* @param onDismissListener A {@link DialogInterface.OnDismissListener} to call when the dialog is
* dismissed.
*/
public static TrackSelectionDialog createForPlayer(
Player player, DialogInterface.OnDismissListener onDismissListener) {
return createForTracksAndParameters(
R.string.track_selection_title,
player.getCurrentTracks(),
player.getTrackSelectionParameters(),
/* allowAdaptiveSelections= */ true,
/* allowMultipleOverrides= */ false,
player::setTrackSelectionParameters,
onDismissListener);
}
/**
* Creates a dialog for given {@link Tracks} and {@link TrackSelectionParameters}.
*
* @param titleId The resource id of the dialog title.
* @param tracks The {@link Tracks} describing the tracks to display.
* @param trackSelectionParameters The initial {@link TrackSelectionParameters}.
* @param allowAdaptiveSelections Whether adaptive selections (consisting of more than one track)
* can be made.
* @param allowMultipleOverrides Whether tracks from multiple track groups can be selected.
* @param trackSelectionListener Called when tracks are selected.
* @param onDismissListener {@link DialogInterface.OnDismissListener} called when the dialog is
* dismissed.
*/
public static TrackSelectionDialog createForTracksAndParameters(
int titleId,
Tracks tracks,
TrackSelectionParameters trackSelectionParameters,
boolean allowAdaptiveSelections,
boolean allowMultipleOverrides,
TrackSelectionListener trackSelectionListener,
DialogInterface.OnDismissListener onDismissListener) {
TrackSelectionDialog trackSelectionDialog = new TrackSelectionDialog();
trackSelectionDialog.init(
tracks,
trackSelectionParameters,
titleId,
allowAdaptiveSelections,
allowMultipleOverrides,
/* onClickListener= */ (dialog, which) -> {
TrackSelectionParameters.Builder builder = trackSelectionParameters.buildUpon();
for (int i = 0; i < SUPPORTED_TRACK_TYPES.size(); i++) {
int trackType = SUPPORTED_TRACK_TYPES.get(i);
builder.setTrackTypeDisabled(trackType, trackSelectionDialog.getIsDisabled(trackType));
builder.clearOverridesOfType(trackType);
Map<TrackGroup, TrackSelectionOverride> overrides =
trackSelectionDialog.getOverrides(trackType);
for (TrackSelectionOverride override : overrides.values()) {
builder.addOverride(override);
}
}
trackSelectionListener.onTracksSelected(builder.build());
},
onDismissListener);
return trackSelectionDialog;
}
public TrackSelectionDialog() {
tabFragments = new SparseArray<>();
tabTrackTypes = new ArrayList<>();
// Retain instance across activity re-creation to prevent losing access to init data.
setRetainInstance(true);
}
private void init(
Tracks tracks,
TrackSelectionParameters trackSelectionParameters,
int titleId,
boolean allowAdaptiveSelections,
boolean allowMultipleOverrides,
DialogInterface.OnClickListener onClickListener,
DialogInterface.OnDismissListener onDismissListener) {
this.titleId = titleId;
this.onClickListener = onClickListener;
this.onDismissListener = onDismissListener;
for (int i = 0; i < SUPPORTED_TRACK_TYPES.size(); i++) {
@C.TrackType int trackType = SUPPORTED_TRACK_TYPES.get(i);
ArrayList<Tracks.Group> trackGroups = new ArrayList<>();
for (Tracks.Group trackGroup : tracks.getGroups()) {
if (trackGroup.getType() == trackType) {
trackGroups.add(trackGroup);
}
}
if (!trackGroups.isEmpty()) {
TrackSelectionViewFragment tabFragment = new TrackSelectionViewFragment();
tabFragment.init(
trackGroups,
trackSelectionParameters.disabledTrackTypes.contains(trackType),
trackSelectionParameters.overrides,
allowAdaptiveSelections,
allowMultipleOverrides);
tabFragments.put(trackType, tabFragment);
tabTrackTypes.add(trackType);
}
}
}
/**
* Returns whether the disabled option is selected for the specified track type.
*
* @param trackType The track type.
* @return Whether the disabled option is selected for the track type.
*/
public boolean getIsDisabled(int trackType) {
TrackSelectionViewFragment trackView = tabFragments.get(trackType);
return trackView != null && trackView.isDisabled;
}
/**
* Returns the selected track overrides for the specified track type.
*
* @param trackType The track type.
* @return The track overrides for the track type.
*/
public Map<TrackGroup, TrackSelectionOverride> getOverrides(int trackType) {
TrackSelectionViewFragment trackView = tabFragments.get(trackType);
return trackView == null ? Collections.emptyMap() : trackView.overrides;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// We need to own the view to let tab layout work correctly on all API levels. We can't use
// AlertDialog because it owns the view itself, so we use AppCompatDialog instead, themed using
// the AlertDialog theme overlay with force-enabled title.
AppCompatDialog dialog =
new AppCompatDialog(getActivity(), R.style.TrackSelectionDialogThemeOverlay);
dialog.setTitle(titleId);
return dialog;
}
@Override
public void onDismiss(DialogInterface dialog) {
super.onDismiss(dialog);
onDismissListener.onDismiss(dialog);
}
@Override
public View onCreateView(
LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View dialogView = inflater.inflate(R.layout.track_selection_dialog, container, false);
TabLayout tabLayout = dialogView.findViewById(R.id.track_selection_dialog_tab_layout);
ViewPager viewPager = dialogView.findViewById(R.id.track_selection_dialog_view_pager);
Button cancelButton = dialogView.findViewById(R.id.track_selection_dialog_cancel_button);
Button okButton = dialogView.findViewById(R.id.track_selection_dialog_ok_button);
viewPager.setAdapter(new FragmentAdapter(getChildFragmentManager()));
tabLayout.setupWithViewPager(viewPager);
tabLayout.setVisibility(tabFragments.size() > 1 ? View.VISIBLE : View.GONE);
cancelButton.setOnClickListener(view -> dismiss());
okButton.setOnClickListener(
view -> {
onClickListener.onClick(getDialog(), DialogInterface.BUTTON_POSITIVE);
dismiss();
});
return dialogView;
}
private static String getTrackTypeString(Resources resources, @C.TrackType int trackType) {
switch (trackType) {
case C.TRACK_TYPE_VIDEO:
return resources.getString(R.string.exo_track_selection_title_video);
case C.TRACK_TYPE_AUDIO:
return resources.getString(R.string.exo_track_selection_title_audio);
case C.TRACK_TYPE_TEXT:
return resources.getString(R.string.exo_track_selection_title_text);
default:
throw new IllegalArgumentException();
}
}
private final class FragmentAdapter extends FragmentPagerAdapter {
public FragmentAdapter(FragmentManager fragmentManager) {
super(fragmentManager, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
}
@Override
public Fragment getItem(int position) {
return tabFragments.get(tabTrackTypes.get(position));
}
@Override
public int getCount() {
return tabTrackTypes.size();
}
@Override
public CharSequence getPageTitle(int position) {
return getTrackTypeString(getResources(), tabTrackTypes.get(position));
}
}
/** Fragment to show a track selection in tab of the track selection dialog. */
public static final class TrackSelectionViewFragment extends Fragment
implements TrackSelectionView.TrackSelectionListener {
private List<Tracks.Group> trackGroups;
private boolean allowAdaptiveSelections;
private boolean allowMultipleOverrides;
/* package */ boolean isDisabled;
/* package */ Map<TrackGroup, TrackSelectionOverride> overrides;
public TrackSelectionViewFragment() {
// Retain instance across activity re-creation to prevent losing access to init data.
setRetainInstance(true);
}
public void init(
List<Tracks.Group> trackGroups,
boolean isDisabled,
Map<TrackGroup, TrackSelectionOverride> overrides,
boolean allowAdaptiveSelections,
boolean allowMultipleOverrides) {
this.trackGroups = trackGroups;
this.isDisabled = isDisabled;
this.allowAdaptiveSelections = allowAdaptiveSelections;
this.allowMultipleOverrides = allowMultipleOverrides;
// TrackSelectionView does this filtering internally, but we need to do it here as well to
// handle the case where the TrackSelectionView is never created.
this.overrides =
new HashMap<>(
TrackSelectionView.filterOverrides(overrides, trackGroups, allowMultipleOverrides));
}
@Override
public View onCreateView(
LayoutInflater inflater,
@Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
View rootView =
inflater.inflate(
R.layout.exo_track_selection_dialog, container, /* attachToRoot= */ false);
TrackSelectionView trackSelectionView = rootView.findViewById(R.id.exo_track_selection_view);
trackSelectionView.setShowDisableOption(true);
trackSelectionView.setAllowMultipleOverrides(allowMultipleOverrides);
trackSelectionView.setAllowAdaptiveSelections(allowAdaptiveSelections);
trackSelectionView.init(
trackGroups,
isDisabled,
overrides,
/* trackFormatComparator= */ null,
/* listener= */ this);
return rootView;
}
@Override
public void onTrackSelectionChanged(
boolean isDisabled, Map<TrackGroup, TrackSelectionOverride> overrides) {
this.isDisabled = isDisabled;
this.overrides = overrides;
}
}
}