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 17 package com.example.android.musicbrowserdemo; 18 19 import android.content.Context; 20 import android.content.ComponentName; 21 import android.content.Intent; 22 import android.content.pm.PackageManager; 23 import android.content.pm.ResolveInfo; 24 import android.media.browse.MediaBrowser; 25 import android.service.media.MediaBrowserService; 26 import android.os.Bundle; 27 import android.net.Uri; 28 import android.support.v4.app.FragmentActivity; 29 import android.support.v4.app.FragmentTransaction; 30 import android.support.v4.app.ListFragment; 31 import android.util.Log; 32 import android.view.LayoutInflater; 33 import android.view.View; 34 import android.view.ViewGroup; 35 import android.widget.BaseAdapter; 36 import android.widget.ListView; 37 import android.widget.TextView; 38 39 import java.util.ArrayList; 40 import java.util.List; 41 42 public class BrowserListFragment extends ListFragment { 43 private static final String TAG = "BrowserListFragment"; 44 45 // Hints 46 public static final String HINT_DISPLAY = "com.example.android.musicbrowserdemo.DISPLAY"; 47 48 // For args 49 public static final String ARG_COMPONENT = "component"; 50 public static final String ARG_ID = "uri"; 51 52 private Adapter mAdapter; 53 private List<Item> mItems = new ArrayList(); 54 private ComponentName mComponent; 55 private String mNodeId; 56 private MediaBrowser mBrowser; 57 58 private static class Item { 59 final MediaBrowser.MediaItem media; 60 61 Item(MediaBrowser.MediaItem m) { 62 this.media = m; 63 } 64 } 65 66 public BrowserListFragment() { 67 } 68 69 @Override 70 public void onActivityCreated(Bundle savedInstanceState) { 71 super.onActivityCreated(savedInstanceState); 72 Log.d(TAG, "onActivityCreated -- " + hashCode()); 73 mAdapter = new Adapter(); 74 setListAdapter(mAdapter); 75 76 // Get our arguments 77 final Bundle args = getArguments(); 78 mComponent = args.getParcelable(ARG_COMPONENT); 79 mNodeId = args.getString(ARG_ID); 80 81 // A hint about who we are, so the service can customize the results if it wants to. 82 final Bundle rootHints = new Bundle(); 83 rootHints.putBoolean(HINT_DISPLAY, true); 84 85 mBrowser = new MediaBrowser(getActivity(), mComponent, mConnectionCallbacks, rootHints); 86 } 87 88 @Override 89 public void onStart() { 90 super.onStart(); 91 mBrowser.connect(); 92 } 93 94 @Override 95 public void onStop() { 96 super.onStop(); 97 mBrowser.disconnect(); 98 } 99 100 @Override 101 public void onListItemClick(ListView l, View v, int position, long id) { 102 final Item item = mItems.get(position); 103 104 Log.i("BrowserListFragment", "Item clicked: " + position + " -- " 105 + mAdapter.getItem(position).media.getDescription().getIconUri()); 106 107 final BrowserListFragment fragment = new BrowserListFragment(); 108 109 final Bundle args = new Bundle(); 110 args.putParcelable(BrowserListFragment.ARG_COMPONENT, mComponent); 111 args.putParcelable(BrowserListFragment.ARG_ID, item.media.getDescription().getIconUri()); 112 fragment.setArguments(args); 113 114 getFragmentManager().beginTransaction() 115 .replace(android.R.id.content, fragment) 116 .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN) 117 .addToBackStack(null) 118 .commit(); 119 120 } 121 122 final MediaBrowser.ConnectionCallback mConnectionCallbacks 123 = new MediaBrowser.ConnectionCallback() { 124 @Override 125 public void onConnected() { 126 Log.d(TAG, "mConnectionCallbacks.onConnected"); 127 if (mNodeId == null) { 128 mNodeId = mBrowser.getRoot(); 129 } 130 mBrowser.subscribe(mNodeId, new MediaBrowser.SubscriptionCallback() { 131 @Override 132 public void onChildrenLoaded(String parentId, 133 List<MediaBrowser.MediaItem> children) { 134 Log.d(TAG, "onChildrenLoaded parentId=" + parentId 135 + " children= " + children); 136 mItems.clear(); 137 final int N = children.size(); 138 for (int i=0; i<N; i++) { 139 mItems.add(new Item(children.get(i))); 140 } 141 mAdapter.notifyDataSetChanged(); 142 } 143 144 @Override 145 public void onError(String parentId) { 146 Log.d(TAG, "onError parentId=" + parentId); 147 } 148 }); 149 } 150 151 @Override 152 public void onConnectionSuspended() { 153 Log.d(TAG, "mConnectionCallbacks.onConnectionSuspended"); 154 } 155 156 @Override 157 public void onConnectionFailed() { 158 Log.d(TAG, "mConnectionCallbacks.onConnectionFailed"); 159 } 160 }; 161 162 private class Adapter extends BaseAdapter { 163 private final LayoutInflater mInflater; 164 165 Adapter() { 166 super(); 167 168 final Context context = getActivity(); 169 mInflater = LayoutInflater.from(context); 170 } 171 172 @Override 173 public int getCount() { 174 return mItems.size(); 175 } 176 177 @Override 178 public Item getItem(int position) { 179 return mItems.get(position); 180 } 181 182 @Override 183 public long getItemId(int position) { 184 return position; 185 } 186 187 @Override 188 public int getItemViewType(int position) { 189 return 1; 190 } 191 192 @Override 193 public View getView(int position, View convertView, ViewGroup parent) { 194 if (convertView == null) { 195 convertView = mInflater.inflate(android.R.layout.simple_list_item_1, parent, false); 196 } 197 198 final TextView tv = (TextView)convertView; 199 final Item item = mItems.get(position); 200 tv.setText(item.media.getDescription().getTitle()); 201 202 return convertView; 203 } 204 205 @Override 206 public int getViewTypeCount() { 207 return 1; 208 } 209 } 210 } 211 212 213
