后台音乐播放

步骤1:

info.plist文件中添加:Required background modes字段，里面的item 值选择:App plays audio or streams audio/video using AirPlay

步骤二:

在Appdelegate.m中：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

 //后台播放音乐 步骤二:

    {

        

        AVAudioSession *session = [AVAudioSession sharedInstance];

        NSError *setCategoryError = nil;

        [session setCategory:AVAudioSessionCategoryPlayback error:&setCategoryError];

        NSError *activationError = nil;

        [session setActive:YES error:&activationError];

    }

｝