带有AVPlayer的应用程序在启动后播放mp4 interrupt iPod音乐
带有AVPlayer的应用程序在启动后播放mp4 interrupt iPod音乐
提问于 2012-08-18 15:27:22
我的应用程序使用AVPlayer播放mp4，当我的应用程序完成启动时，它会中断iPod音乐，尽管我已经将音频会话设置为允许与其他人在
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
AudioSessionInitialize(NULL, NULL, NULL, NULL);
AudioSessionSetActive(true);
UInt32 sessionCategory = kAudioSessionCategory_AmbientSound;
AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(sessionCategory), &sessionCategory);
UInt32 allowMixWithOthers = true;
AudioSessionSetProperty(kAudioSessionProperty_OverrideCategoryMixWithOthers, sizeof(allowMixWithOthers), &allowMixWithOthers);在视图控制器出现后，我重新启动了iPod音乐，它在我的应用程序上运行良好，没有中断，我的应用程序也不会再中断音乐。
谁知道这个问题能不能解决？我还检查了myapp-info.plist，发现没有阻止中断iPod的属性。
所有的AudioSession方法都不会返回错误。
以下是iPhoneConfigureUtility中的日志：
Aug 20 10:55:54 nova-teki-iPhone audiotest[3510] <Warning>: AudioSessionInitialize status = 0
Aug 20 10:55:55 nova-teki-iPhone kernel[0] <Debug>: ALS: kIOHIDDisplayBrightnessSliderPositionKey=69% (0xb226)
Aug 20 10:55:55 nova-teki-iPhone audiotest[3510] <Warning>: AudioSessionSetActive status = 0
Aug 20 10:55:55 nova-teki-iPhone audiotest[3510] <Warning>: kAudioSessionProperty_AudioCategory status = 0
Aug 20 10:55:55 nova-teki-iPhone audiotest[3510] <Warning>: kAudioSessionProperty_OverrideCategoryMixWithOthers status = 0
Aug 20 10:55:56 nova-teki-iPhone audiotest[3510] <Error>: [10:55:56.005] FigSubtitleSampleCreateFromPropertyList signalled err=50 (kFigCFBadPropertyListErr) (NULL or bad plist) at /SourceCache/EmbeddedCoreMedia/EmbeddedCoreMedia-1033.6/BuildSystem/XcodeProjects/MediaToolbox/../../../Sources/../Prototypes/ClosedCaptions/FigCaptionCommand.c line 762
Aug 20 10:55:56 nova-teki-iPhone audiotest[3510] <Warning>: Application windows are expected to have a root view controller at the end of application launch以下是我的测试程序：
OSStatus status = AudioSessionInitialize(NULL, NULL, NULL, NULL);
status = AudioSessionSetActive(true);
UInt32 sessionCategory = kAudioSessionCategory_AmbientSound;
status = AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(sessionCategory), &sessionCategory);
UInt32 allowMixWithOthers = true;
status = AudioSessionSetProperty(kAudioSessionProperty_OverrideCategoryMixWithOthers, sizeof(allowMixWithOthers), &allowMixWithOthers);
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(itemDidPlayToEndTime:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:nil];
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Override point for customization after application launch.
playerView = [[MoviePlayerView alloc] initWithFrame:self.window.bounds];
AVPlayer *player = [AVPlayer playerWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"sunny" ofType:@"mp4"]]];
player.actionAtItemEnd = AVPlayerActionAtItemEndNone;
[player play];
[(AVPlayerLayer *)playerView.layer setPlayer:player];
[self.window addSubview:playerView];
[playerView release];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;回答 2
Stack Overflow用户
回答已采纳
发布于 2012-08-20 11:21:27
最后，我找出了哪里出了问题。
AudioSessionInitialize(NULL, NULL, NULL, NULL);
UInt32 sessionCategory = kAudioSessionCategory_AmbientSound;
AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(sessionCategory), &sessionCategory);
UInt32 allowMixWithOthers = true;
AudioSessionSetProperty(kAudioSessionProperty_OverrideCategoryMixWithOthers, sizeof(allowMixWithOthers), &allowMixWithOthers);
AudioSessionSetActive(true);必须在AudioSessionSetProperty之后调用AudioSessionSetActive，它现在工作得很好。
Stack Overflow用户
发布于 2014-01-26 18:23:49
在iOS 6/7中，您可以使用AVAudioSession，因为AudioSessionSetProperty已被弃用。
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback withOptions:AVAudioSessionCategoryOptionMixWithOthers error:nil];页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/12016770
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