ios中音乐后台运行方法
1、引入AVFoundation框架中的#import <AVFoundation/AVFoundation.h>,然后在Info.plist文件中添加UIBackgroundModes键值,它包含一个或多个string的值,选择App plays audio or streams audio/video using AirPlay。
2、在加载音乐的界面ViewDidLoad中添加下面代码
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setActive:YES error:nil];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
完整代码演示:
- (void)viewDidLoad
{
//音乐在后台播放
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setActive:YES error:nil];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
NSURL* fileURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"loop.mp3" ofType:nil]];
AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:NULL];
player.numberOfLoops = -1; // Endless(循环播放)
[player play];
}