获取ios本地乐库音乐MPMediaPickerController

一.通过弹出控制器，获取本地音乐列表，然后播放。该方法类似于UIImagePickerController。

导入MediaPlayer.framework框架。

1 -(void)musicInit{
2     //创建播放器控制器
3     MPMediaPickerController *mpc = [[MPMediaPickerController alloc] initWithMediaTypes:MPMediaTypeAnyAudio];
4     //设置代理
5     mpc.delegate = self;
6     [self presentViewController:mpc animated:YES completion:nil];
7 }

实现代理<MPMediaPickerControllerDelegate>，及其两个方法：

 1 #pragma mark - Delegate
 2 //选中后调用 
 3 - (void)mediaPicker:(MPMediaPickerController *)mediaPicker didPickMediaItems:(MPMediaItemCollection *)mediaItemCollection{
 4     NSArray *items = mediaItemCollection.items;
 5     MPMediaItem *item = [items objectAtIndex:0];
 6     NSString *name = [item valueForProperty:MPMediaItemPropertyTitle];
 7     NSLog(@"name= %@",name);
 8     MPMediaItemArtwork *artwork = [item valueForProperty:MPMediaItemPropertyArtwork];
 9     UIImage *image = [artwork imageWithSize:CGSizeMake(100, 100)];//获取图片
10     //  MPMediaItemPropertyPlaybackDuration     总时间的属性名称
11     
12 //     MPMusicPlayerController *mpc = [MPMusicPlayerController iPodMusicPlayer];    //调用ipod播放器
13     MPMusicPlayerController *mpc = [MPMusicPlayerController applicationMusicPlayer];
14     //设置播放集合
15     [mpc setQueueWithItemCollection:mediaItemCollection];
16     [mpc play];
17     
18     [self dismissViewControllerAnimated:YES completion:nil];
19 }
20 //点击取消时回调
21 - (void)mediaPickerDidCancel:(MPMediaPickerController *)mediaPicker{
22     [self dismissViewControllerAnimated:YES completion:nil];
23 }

二. 仅获取本地音乐的列表

导入MediaPlayer.framework框架。

1 #import <UIKit/UIKit.h>
2 #import <MediaPlayer/MediaPlayer.h>
3 
4 @interface MusicListTableViewController : UITableViewController
5 
6 @property (nonatomic,retain) NSMutableArray *items;         //存放本地歌曲
7 @property (nonatomic,retain) MPMusicPlayerController *mpc;  //播放器对象
8 
9 @end

 1 - (void)viewDidLoad
 2 {
 3     [super viewDidLoad];
 4 
 5     self.items = [NSMutableArray array];
 6     //监听歌曲播放完成的通知
 7     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reload) name:MPMusicPlayerControllerNowPlayingItemDidChangeNotification object:nil];
 8     [self initMusicItems];
 9 }
10 
11 - (void)didReceiveMemoryWarning
12 {
13     [super didReceiveMemoryWarning];
14     // Dispose of any resources that can be recreated.
15 }
16 
17 #pragma mark - Private Method
18 -(void)initMusicItems{
19     //获得query，用于请求本地歌曲集合
20     MPMediaQuery *query = [MPMediaQuery songsQuery];
21     //循环获取得到query获得的集合
22     for (MPMediaItemCollection *conllection in query.collections) {
23         //MPMediaItem为歌曲项，包含歌曲信息
24         for (MPMediaItem *item in conllection.items) {
25             [self.items addObject:item];
26         }
27     }
28     //通过歌曲items数组创建一个collection
29     MPMediaItemCollection *mic = [[MPMediaItemCollection alloc] initWithItems:self.items];
30     //获得应用播放器
31     self.mpc = [MPMusicPlayerController applicationMusicPlayer];
32     //开启播放通知，不开启，不会发送歌曲完成，音量改变的通知
33     [self.mpc beginGeneratingPlaybackNotifications];
34     //设置播放的集合
35     [self.mpc setQueueWithItemCollection:mic];
36 }
37 
38 -(void)reload{
39     //音乐播放完成刷新table
40     [self.tableView reloadData];
41 }
42 
43 #pragma mark - Table view data source
44 
45 
46 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
47 {
48     return self.items.count;
49 }
50 
51 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
52 {
53     static NSString *CellIdentifier = @"MusicCellIdentifier";
54     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
55     
56     
57     MPMediaItem *item = self.items[indexPath.row];
58     //获得专辑对象
59     MPMediaItemArtwork *artwork = [item valueForProperty:MPMediaItemPropertyArtwork];
60     //专辑封面 
61     UIImage *img = [artwork imageWithSize:CGSizeMake(100, 100)];
62     if (!img) {
63         img = [UIImage imageNamed:@"musicImage.png"];
64     }
65     cell.imageView.image = img;
66     cell.textLabel.text = [item valueForProperty:MPMediaItemPropertyTitle];         //歌曲名称
67     cell.detailTextLabel.text = [item valueForProperty:MPMediaItemPropertyArtist];  //歌手名称
68     if (self.mpc.nowPlayingItem == self.items[indexPath.row]) {
69         cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
70     }else{
71         cell.accessoryType = UITableViewCellAccessoryNone;
72     }
73     
74     
75     return cell;
76 }
77 
78 
79 
80 #pragma mark - Table view delegate
81 
82 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
83 {
84     [self.tableView deselectRowAtIndexPath:indexPath animated:NO];
85     //设置播放选中的歌曲
86     [self.mpc setNowPlayingItem:self.items[indexPath.row]];     
87     [self.mpc play];
88     
89     [self.tableView reloadData];
90 }