本文实例为大家分享了iOS实现音乐的后台播放，以及播放时，可以控制其暂停，下一首等操作，以及锁屏图片歌曲名等的显示
此实例需要真机调试，效果图如下：
工程下载：github工程下载
实现步骤：
1、首先修改info.plist
2、其次引入两个需要的框架
#import <AVFoundation/AVFoundation.h> #import <MediaPlayer/MediaPlayer.h>
3、设置播放器及后台播放
- (void)viewDidLoad {
[super viewDidLoad];
// 设置后台播放
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
// 设置播放器
NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"那些花儿" ofType:@"mp3"] ];
_player = [[AVPlayer alloc] initWithURL:url];
[_player play];
_isPlayingNow = YES;
//后台播放显示信息设置
[self setPlayingInfo];
}
#pragma mark - 接收方法的设置
- (void)remoteControlReceivedWithEvent:(UIEvent *)event {
if (event.type == UIEventTypeRemoteControl) { //判断是否为远程控制
switch (event.subtype) {
case UIEventSubtypeRemoteControlPlay:
if (!_isPlayingNow) {
[_player play];
}
_isPlayingNow = !_isPlayingNow;
break;
case UIEventSubtypeRemoteControlPause:
if (_isPlayingNow) {
[_player pause];
}
_isPlayingNow = !_isPlayingNow;
break;
case UIEventSubtypeRemoteControlNextTrack:
NSLog(@"下一首");
break;
case UIEventSubtypeRemoteControlPreviousTrack:
NSLog(@"上一首 ");
break;
default:
break;
}
}
}
4、设置后台播放时显示的东西，例如歌曲名字，图片等
- (void)setPlayingInfo {
// <MediaPlayer/MediaPlayer.h>
MPMediaItemArtwork *artWork = [[MPMediaItemArtwork alloc] initWithImage:[UIImage imageNamed:@"pushu.jpg"]];
NSDictionary *dic = @{MPMediaItemPropertyTitle:@"那些花儿",
MPMediaItemPropertyArtist:@"朴树",
MPMediaItemPropertyArtwork:artWork
};
[[MPNowPlayingInfoCenter defaultCenter] setNowPlayingInfo:dic];
}
5、远程控制设置
- (void)viewDidAppear:(BOOL)animated {
// 接受远程控制
[self becomeFirstResponder];
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
}
- (void)viewDidDisappear:(BOOL)animated {
// 取消远程控制
[self resignFirstResponder];
[[UIApplication sharedApplication] endReceivingRemoteControlEvents];
}
