ios播放聲音中斷後台音樂的問題,ios播放中斷後台
今天遇到一個ios播放聲音中斷後台音樂的問題,在我的app中如果調用AVAudioSession 播放完聲音,背景qq音樂偶爾不能恢複,而網易雲音樂一次都不能恢複播放,研究了一下AVAudioSession ,我之前調用[audioSession setActive:NO error:&err];還有一個方法
/* Set the session active or inactive. Note that activating an audio session is a synchronous (blocking) operation.
Therefore, we recommend that applications not activate their session from a thread where a long blocking operation will be problematic.
Note that this method will throw an exception in apps linked on or after iOS 8 if the session is set inactive while it has running or
paused I/O (e.g. audio queues, players, recorders, converters, remote I/Os, etc.).
*/
- (BOOL)setActive:(BOOL)active error:(NSError **)outError;
- (BOOL)setActive:(BOOL)active withOptions:(AVAudioSessionSetActiveOptions)options error:(NSError **)outError NS_AVAILABLE_IOS(6_0);
而AVAudioSessionSetActiveOptions這個枚舉
/* options for use when calling setActive:withOptions:error:
AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation --
Notify an interrupted app that the interruption has ended and it may resume playback. Only valid on
session deactivation. */
typedef NS_OPTIONS(NSUInteger, AVAudioSessionSetActiveOptions)
{
AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation = 1
} NS_AVAILABLE_IOS(6_0);
注釋的意思是:“通知中斷程式中斷已經結束,可以恢複播放。。。。“,
看來這裡應該是造成播放聲音導致背景qq音樂偶爾不能恢複,而網易雲音樂一次都不能恢複播放的地方
之後改成調用 [[AVAudioSession sharedInstance] setActive:NO withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:nil];果然網易雲音樂也可以恢複了,看了蘋果官方的文章,上面有張圖