Nagesh Susarla | 372eb5f | 2014-11-07 16:18:29 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package com.example.android.musicservicedemo; |
| 17 | |
| 18 | import android.app.Fragment; |
| 19 | import android.content.ComponentName; |
| 20 | import android.content.Context; |
| 21 | import android.media.browse.MediaBrowser; |
| 22 | import android.media.session.MediaController; |
| 23 | import android.os.Bundle; |
| 24 | import android.util.Log; |
| 25 | import android.view.LayoutInflater; |
| 26 | import android.view.View; |
| 27 | import android.view.ViewGroup; |
| 28 | import android.widget.AdapterView; |
| 29 | import android.widget.ArrayAdapter; |
| 30 | import android.widget.ImageView; |
| 31 | import android.widget.ListView; |
| 32 | import android.widget.TextView; |
| 33 | import android.widget.Toast; |
| 34 | |
| 35 | import com.example.android.musicservicedemo.utils.LogHelper; |
| 36 | |
| 37 | import java.util.ArrayList; |
| 38 | import java.util.List; |
| 39 | |
| 40 | /** |
| 41 | * A Fragment that lists all the various browsable queues available |
| 42 | * from a {@link android.service.media.MediaBrowserService}. |
| 43 | * <p/> |
| 44 | * It uses a {@link MediaBrowser} to connect to the {@link MusicService}. Once connected, |
| 45 | * the fragment subscribes to get all the children. All {@link MediaBrowser.MediaItem}'s |
| 46 | * that can be browsed are shown in a ListView. |
| 47 | */ |
| 48 | public class BrowseFragment extends Fragment { |
| 49 | |
| 50 | private static final String TAG = BrowseFragment.class.getSimpleName(); |
| 51 | |
| 52 | public static final String ARG_MEDIA_ID = "media_id"; |
| 53 | |
| 54 | public static interface FragmentDataHelper { |
| 55 | void onMediaItemSelected(MediaBrowser.MediaItem item); |
| 56 | } |
| 57 | |
| 58 | // The mediaId to be used for subscribing for children using the MediaBrowser. |
| 59 | private String mMediaId; |
| 60 | |
| 61 | private MediaBrowser mMediaBrowser; |
| 62 | private BrowseAdapter mBrowserAdapter; |
| 63 | |
| 64 | private MediaBrowser.SubscriptionCallback mSubscriptionCallback = new MediaBrowser.SubscriptionCallback() { |
| 65 | |
| 66 | @Override |
| 67 | public void onChildrenLoaded(String parentId, List<MediaBrowser.MediaItem> children) { |
| 68 | mBrowserAdapter.clear(); |
| 69 | mBrowserAdapter.notifyDataSetInvalidated(); |
| 70 | for (MediaBrowser.MediaItem item : children) { |
Nagesh Susarla | 372eb5f | 2014-11-07 16:18:29 -0800 | [diff] [blame] | 71 | mBrowserAdapter.add(item); |
| 72 | } |
| 73 | mBrowserAdapter.notifyDataSetChanged(); |
| 74 | } |
| 75 | |
| 76 | @Override |
| 77 | public void onError(String id) { |
| 78 | Toast.makeText(getActivity(), R.string.error_loading_media, |
| 79 | Toast.LENGTH_LONG).show(); |
| 80 | } |
| 81 | }; |
| 82 | |
| 83 | private MediaBrowser.ConnectionCallback mConnectionCallback = |
| 84 | new MediaBrowser.ConnectionCallback() { |
| 85 | @Override |
| 86 | public void onConnected() { |
| 87 | LogHelper.d(TAG, "onConnected: session token " + mMediaBrowser.getSessionToken()); |
| 88 | |
| 89 | if (mMediaId == null) { |
| 90 | mMediaId = mMediaBrowser.getRoot(); |
| 91 | } |
| 92 | mMediaBrowser.subscribe(mMediaId, mSubscriptionCallback); |
Nagesh Susarla | 236b66b | 2014-11-10 16:33:43 -0800 | [diff] [blame] | 93 | if (mMediaBrowser.getSessionToken() == null) { |
| 94 | throw new IllegalArgumentException("No Session token"); |
| 95 | } |
Nagesh Susarla | 372eb5f | 2014-11-07 16:18:29 -0800 | [diff] [blame] | 96 | MediaController mediaController = new MediaController(getActivity(), |
| 97 | mMediaBrowser.getSessionToken()); |
| 98 | getActivity().setMediaController(mediaController); |
| 99 | } |
| 100 | |
| 101 | @Override |
| 102 | public void onConnectionFailed() { |
| 103 | LogHelper.d(TAG, "onConnectionFailed"); |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | public void onConnectionSuspended() { |
| 108 | LogHelper.d(TAG, "onConnectionSuspended"); |
| 109 | getActivity().setMediaController(null); |
| 110 | } |
| 111 | }; |
| 112 | |
| 113 | public static BrowseFragment newInstance(String mediaId) { |
| 114 | Bundle args = new Bundle(); |
| 115 | args.putString(ARG_MEDIA_ID, mediaId); |
| 116 | BrowseFragment fragment = new BrowseFragment(); |
| 117 | fragment.setArguments(args); |
| 118 | return fragment; |
| 119 | } |
| 120 | |
| 121 | @Override |
| 122 | public View onCreateView(LayoutInflater inflater, ViewGroup container, |
| 123 | Bundle savedInstanceState) { |
| 124 | View rootView = inflater.inflate(R.layout.fragment_list, container, false); |
| 125 | |
| 126 | mBrowserAdapter = new BrowseAdapter(getActivity()); |
| 127 | |
| 128 | View controls = rootView.findViewById(R.id.controls); |
| 129 | controls.setVisibility(View.GONE); |
| 130 | |
| 131 | ListView listView = (ListView) rootView.findViewById(R.id.list_view); |
| 132 | listView.setAdapter(mBrowserAdapter); |
| 133 | listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { |
| 134 | @Override |
| 135 | public void onItemClick(AdapterView<?> parent, View view, int position, long id) { |
| 136 | MediaBrowser.MediaItem item = mBrowserAdapter.getItem(position); |
| 137 | try { |
| 138 | FragmentDataHelper listener = (FragmentDataHelper) getActivity(); |
| 139 | listener.onMediaItemSelected(item); |
| 140 | } catch (ClassCastException ex) { |
| 141 | Log.e(TAG, "Exception trying to cast to FragmentDataHelper", ex); |
| 142 | } |
| 143 | } |
| 144 | }); |
| 145 | |
| 146 | Bundle args = getArguments(); |
| 147 | mMediaId = args.getString(ARG_MEDIA_ID, null); |
| 148 | |
| 149 | mMediaBrowser = new MediaBrowser(getActivity(), |
| 150 | new ComponentName(getActivity(), MusicService.class), |
| 151 | mConnectionCallback, null); |
| 152 | |
| 153 | return rootView; |
| 154 | } |
| 155 | |
| 156 | @Override |
| 157 | public void onStart() { |
| 158 | super.onStart(); |
| 159 | mMediaBrowser.connect(); |
| 160 | } |
| 161 | |
| 162 | @Override |
| 163 | public void onStop() { |
| 164 | super.onStop(); |
| 165 | mMediaBrowser.disconnect(); |
| 166 | } |
| 167 | |
| 168 | // An adapter for showing the list of browsed MediaItem's |
| 169 | private static class BrowseAdapter extends ArrayAdapter<MediaBrowser.MediaItem> { |
| 170 | |
| 171 | public BrowseAdapter(Context context) { |
Nagesh Susarla | 236b66b | 2014-11-10 16:33:43 -0800 | [diff] [blame] | 172 | super(context, R.layout.media_list_item, new ArrayList<MediaBrowser.MediaItem>()); |
Nagesh Susarla | 372eb5f | 2014-11-07 16:18:29 -0800 | [diff] [blame] | 173 | } |
| 174 | |
| 175 | static class ViewHolder { |
| 176 | ImageView mImageView; |
| 177 | TextView mTitleView; |
| 178 | TextView mDescriptionView; |
| 179 | } |
| 180 | |
| 181 | @Override |
| 182 | public View getView(int position, View convertView, ViewGroup parent) { |
| 183 | |
| 184 | ViewHolder holder; |
| 185 | |
| 186 | if (convertView == null) { |
| 187 | convertView = LayoutInflater.from(getContext()) |
Nagesh Susarla | 236b66b | 2014-11-10 16:33:43 -0800 | [diff] [blame] | 188 | .inflate(R.layout.media_list_item, parent, false); |
Nagesh Susarla | 372eb5f | 2014-11-07 16:18:29 -0800 | [diff] [blame] | 189 | holder = new ViewHolder(); |
| 190 | holder.mImageView = (ImageView) convertView.findViewById(R.id.play_eq); |
| 191 | holder.mImageView.setVisibility(View.GONE); |
| 192 | holder.mTitleView = (TextView) convertView.findViewById(R.id.title); |
| 193 | holder.mDescriptionView = (TextView) convertView.findViewById(R.id.description); |
| 194 | convertView.setTag(holder); |
| 195 | } else { |
| 196 | holder = (ViewHolder) convertView.getTag(); |
| 197 | } |
| 198 | |
| 199 | MediaBrowser.MediaItem item = getItem(position); |
| 200 | holder.mTitleView.setText(item.getDescription().getTitle()); |
| 201 | holder.mDescriptionView.setText(item.getDescription().getDescription()); |
| 202 | if (item.isPlayable()) { |
| 203 | holder.mImageView.setImageDrawable( |
| 204 | getContext().getDrawable(R.drawable.ic_play_arrow_white_24dp)); |
| 205 | holder.mImageView.setVisibility(View.VISIBLE); |
| 206 | } |
| 207 | return convertView; |
| 208 | } |
| 209 | } |
| 210 | } |