在線音樂播放器單例

.h文件裏面

<span style="font-size:18px;">#import <Foundation/Foundation.h>
@class AVPlayer;
#define kLocalURL 1
#define kOnLineURL 2
//播放模式
enum {
	AVPlayerOrderLoop = 0,
    AVPlayerRandomLoop = 1,
    AVPlayerSingleLoop = 2,
    AVPlayerListLoop = 3
};
typedef NSInteger AVPlayerLoopStatus;
@interface MusicsPlayer : NSObject
//播放模式
@property(nonatomic,assign)AVPlayerLoopStatus AVPlayerLoopState;
//播放器
@property(nonatomic,retain)AVPlayer *musicPlayer;
@property(nonatomic,assign)NSInteger URLState;
@property(nonatomic,retain)UIImage *picture;
@property(nonatomic,copy)NSString *songName;
@property(nonatomic,copy)NSString *duration;
@property(nonatomic,copy)NSString *singerName;
//當前播放歌曲下標
@property(nonatomic,assign)NSInteger index;
//當前時間
@property(nonatomic,copy)NSString *currentTime;
//當前進程
@property(nonatomic,assign)NSInteger progress;
//總時間
@property(nonatomic,assign)NSInteger totalTimeValue;

//播放列表數據存放數組
@property(nonatomic,retain)NSMutableArray *PlayerListArray;
//單例
+(MusicsPlayer *)shareMusic;

-(void)playWithString:(NSString *)URLSting;
//停止播放
-(void)stop;
//暫停
-(void)pause;
//下一曲
-(void)nextSong;
//上一曲
-(void)frontSong;
//得到播放列表數組
-(void)getDataToPlayerListArrayWithSongListArray:(NSMutableArray *)songListArray;
@end</span>

.m文件

<span style="font-size:18px;">#import "MusicsPlayer.h"
#import "AudioPlayModel.h"
#import <AVFoundation/AVFoundation.h>
#define kSingleLoop 0

@interface MusicsPlayer()
{
    
    AVPlayerItem *_musicItem;
    NSURL *_url;
    NSData *_data;
    BOOL _playingState;
}
@end
@implementation MusicsPlayer
-(void)dealloc{
    [_url release];
    [_picture release];
    [_songName release];
    [_singerName release];
    [_duration release];
    [_currentTime release];
    [super dealloc];
}
static MusicsPlayer *musicPlayer = nil;
+(MusicsPlayer *)shareMusic
{
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        musicPlayer = [[MusicsPlayer alloc] init];
    });
    return musicPlayer;
}
-(void)playWithString:(NSString *)URLSting
{
    //沒有stop,先暫停,再釋放
    [self.musicPlayer pause];
    self.musicPlayer = nil;
    self.currentTime = nil;
    self.picture = nil;
    if (URLSting) {
        [[NSNotificationCenter defaultCenter] postNotificationName:@"URLSting" object:nil];
        _url = [NSURL URLWithString:URLSting];
        if (!_url) {
            _url = [NSURL fileURLWithPath:URLSting];
        }
        _musicItem = [AVPlayerItem playerItemWithURL:_url];
        self.musicPlayer = [[[AVPlayer alloc] initWithPlayerItem:_musicItem] autorelease];
        [self.musicPlayer play];
        
        [_musicItem addObserver:self forKeyPath:@"loadedTimeRanges" options:NSKeyValueObservingOptionNew 
              | NSKeyValueObservingOptionOld context:nil];
        //播放狀態
        [_musicItem addObserver:self forKeyPath:@"status" options:NSKeyValueObservingOptionNew | 
                 NSKeyValueObservingOptionOld context:nil];
        //監測是否播放完(AVPlayerItemDidPlayToEndTimeNotification)
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(AutoNextSong) 
            name:@"AVPlayerItemDidPlayToEndTimeNotification" object:_musicItem];
        CMTime interval = CMTimeMake(1, 1);
        //歌曲播放進程
        [self.musicPlayer addPeriodicTimeObserverForInterval:interval queue:dispatch_get_main_queue()
                usingBlock:^(CMTime time) {
            if (self.musicPlayer.rate == 1) {
                _playingState = YES;
            }else{
                _playingState = NO;
            }
            //將CMTime轉換爲秒(給slider賦值)
            NSInteger currentTime = CMTimeGetSeconds(_musicItem.currentTime);
            self.progress = currentTime;
            //將NSInteger(進程Progress)轉換爲時間字符串
            self.currentTime = [self getCurrentTimeWithValue:currentTime];
            //獲取文件總時長
            self.totalTimeValue = CMTimeGetSeconds(_musicItem.duration);
            //轉換爲字符串
            self.duration = [self getCurrentTimeWithValue:self.totalTimeValue];
            [[NSNotificationCenter defaultCenter] postNotificationName:@"currentTime" object:nil];
        }];
    }
    
}
//播放玩,自動下一曲
-(void)AutoNextSong
{
    //移除觀察者
    [[NSNotificationCenter defaultCenter] removeObserver:self name:@"AVPlayerItemDidPlayToEndTimeNotification"
         object:nil];
    if (self.PlayerListArray) {
        //順序
        if (self.AVPlayerLoopState == AVPlayerOrderLoop) {
            if (self.index == self.PlayerListArray.count - 1) {
                
            }else{
                AudioPlayModel *adoModel = self.PlayerListArray[++self.index][0];
                self.songName = adoModel.song_name;
                self.singerName = adoModel.singer_name;
                self.duration = adoModel.duration;
                [self playWithString:adoModel.url];
            }
        }
        //隨機
        if (self.AVPlayerLoopState == AVPlayerRandomLoop) {
            NSInteger randomNum = arc4random()%(self.PlayerListArray.count - 1 + 1);
            AudioPlayModel *adoModel = self.PlayerListArray[randomNum][0];
            self.songName = adoModel.song_name;
            self.singerName = adoModel.singer_name;
            self.duration = adoModel.duration;
            [self playWithString:adoModel.url];
        }
        //單曲
        if (self.AVPlayerLoopState == AVPlayerSingleLoop) {
            AudioPlayModel *adoModel = self.PlayerListArray[self.index][0];
            self.songName = adoModel.song_name;
            self.singerName = adoModel.singer_name;
            self.duration = adoModel.duration;
            [self playWithString:adoModel.url];
        }
        //循環
        if (self.AVPlayerLoopState == AVPlayerListLoop) {
            if (self.index == self.PlayerListArray.count - 1) {
                self.index = 0;
                AudioPlayModel *adoModel = self.PlayerListArray[self.index][0];
                self.songName = adoModel.song_name;
                self.singerName = adoModel.singer_name;
                self.duration = adoModel.duration;
                [self playWithString:adoModel.url];
            }else{
                AudioPlayModel *adoModel = self.PlayerListArray[++self.index][0];
                self.songName = adoModel.song_name;
                self.singerName = adoModel.singer_name;
                self.duration = adoModel.duration;
                [self playWithString:adoModel.url];
            }
        }
        
    }
}

-(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)
    change context:(void *)context
{
    
    if ([keyPath isEqualToString:@"status"]) {

        if (_musicItem.status == AVPlayerItemStatusReadyToPlay) {
            
        }
        if (_musicItem.status == AVPlayerItemStatusUnknown) {
            
        }
        if (_musicItem.status == AVPlayerItemStatusFailed) {
            
        }
    }else if([keyPath isEqualToString:@"loadedTimeRanges"]){

    }

    
}
//停止播放
-(void)stop
{
    if (_musicPlayer) {
        _musicPlayer = nil;
    }
}
//暫停
-(void)pause
{
    if (_playingState == YES) {
        [_musicPlayer pause];
    }else{
        [_musicPlayer play];
    }
}
//下一曲
-(void)nextSong
{
    if (_musicPlayer) {
        [_musicPlayer pause];
        _musicPlayer = nil;
    }
    if (self.PlayerListArray) {
        if (self.index == self.PlayerListArray.count - 1) {
        }else{
            AudioPlayModel *adoModel = self.PlayerListArray[++self.index][0];
            self.songName = adoModel.song_name;
            self.singerName = adoModel.singer_name;
            self.duration = adoModel.duration;
            [self playWithString:adoModel.url];
        }
    }
}
//上一曲
-(void)frontSong
{
    if (_musicPlayer) {
        [_musicPlayer pause];
        _musicPlayer = nil;
    }
    //確定數組不爲空
    if (self.PlayerListArray) {
        if (self.index == 0) {
            //等於零的時候不能上一曲
            AudioPlayModel *adoModel = self.PlayerListArray[self.index][0];
            self.songName = adoModel.song_name;
            self.singerName = adoModel.singer_name;
            self.duration = adoModel.duration;
            [self playWithString:adoModel.url];
        }else{
            AudioPlayModel *adoModel = self.PlayerListArray[--self.index][0];
            self.songName = adoModel.song_name;
            self.singerName = adoModel.singer_name;
            self.duration = adoModel.duration;
            [self playWithString:adoModel.url];
        }
    }
}
//將時間字符串轉換爲秒
-(NSInteger)getTimeWithString:(NSString *)duration
{
    NSArray *arr = [duration componentsSeparatedByString:@":"];
    NSInteger secend = [arr[0] intValue] * 60 + [arr[1] intValue];
    return secend;
}
//將秒轉換爲時間字符串
-(NSString *)getCurrentTimeWithValue:(NSInteger )sender
{
    NSString *currentTime = [NSString stringWithFormat:@"%d:%d",sender/60,sender%60];
    return currentTime;
}
//得到播放列表數組
-(void)getDataToPlayerListArrayWithSongListArray:(NSMutableArray *)songListArray
{
    self.PlayerListArray = nil;
    self.PlayerListArray = [NSMutableArray arrayWithArray:songListArray];
}
@end</span>