6
MPMoviePlayerController成功播放airPlay，當我進入主屏幕並且應用程序在後臺時。但是當我雙擊主頁按鈕時，應用程序崩潰。這發生在iOS 5上，但不是在4.3上。MPMoviePlayerController在後臺播放airPlay，雙擊主頁按鈕時崩潰
要排除其他代碼，我創建了一個新的空項目，只執行按鈕按下時的代碼。
moviePlayerController = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL URLWithString:@"http://devimages.apple.com/iphone/samples/bipbop/gear1/prog_index.m3u8"]];
NSError *setCategoryError = nil;
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: &setCategoryError];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(moviePlaybackComplete:)
name:MPMoviePlayerPlaybackDidFinishNotification
object:moviePlayerController];
[moviePlayerController setMovieSourceType:MPMovieSourceTypeStreaming];
[self addObservers];
[self.delegate addSubview:moviePlayerController.view];
if([moviePlayerController respondsToSelector:@selector(setAllowsAirPlay:)])
{
[moviePlayerController setAllowsAirPlay:YES];
}
moviePlayerController.fullscreen = YES;
moviePlayerController.scalingMode = MPMovieScalingModeAspectFit;
[moviePlayerController prepareToPlay];
[moviePlayerController play];
在控制檯中我得到的崩潰以下的輸出：
Jan 27 12:08:01 unknown mediaserverd[295] <Error>: <<<<FIGSERVER>>>> FigPlayerRemoteServer_KillAndForceCrashReport: RPCTimeout message received to terminate [295] with reason 'fig rpc timeout -- FigSharedRemote_VolumeCategoryForAudioCategory'
Jan 27 12:08:01 unknown ReportCrash[308] <Notice>: MS:Notice: Installing: (null) [ReportCrash] (675.00)
Jan 27 12:08:01 unknown ReportCrash[308] <Error>: Saved crashreport to /Library/Logs/CrashReporter/mediaserverd-2012-01-27-120801.plist using uid: 0 gid: 0, synthetic_euid: 0 egid: 0
Jan 27 12:08:01 unknown mediaserverd[295] <Error>: <<<<FIGSERVER>>>> FigPlayerRemoteServer_KillAndForceCrashReport: RPCTimeout message received; stackshot generated
Jan 27 12:08:01 unknown mediaserverd[295] <Error>: <<<<FIGSERVER>>>> FigPlayerRemoteServer_KillAndForceCrashReport: TERMINATING our process [295]
Jan 27 12:08:02 unknown com.apple.launchd[1] <Notice>: (com.apple.mediaserverd) Exited: Killed: 9
Jan 27 12:08:02 unknown mediaserverd[310] <Notice>: MS:Notice: Installing: com.apple.mediaserverd [mediaserverd] (675.00)
Jan 27 12:08:02 unknown kernel[0] <Debug>: Sandbox: ignoring builtin profile for platform app: /usr/sbin/mediaserverd
Jan 27 12:08:02 unknown kernel[0] <Debug>: Sandbox: ignoring builtin profile for platform app: /usr/sbin/mediaserverd
Jan 27 12:08:03 unknown mediaserverd[310] <Error>: 12:08:03.383370 com.apple.AVConference: /SourceCache/GameKitServices/GameKitServices-344.3/AVConference.subproj/Sources/AVConferenceServer.m:1862: AVConferenceServerStart aborting - device doesn't support conferencing
，並在crashreport：
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x00000000, 0x00000000
Crashed Thread: 0
Last Exception Backtrace:
0 CoreFoundation 0x33bab8bf 0x33af2000 + 759999
1 libobjc.A.dylib 0x31bcd1e5 0x31bc4000 + 37349
2 AVFoundation 0x374f6cb5 -[AVPlayerItem _attachToPlayer:forImmediateEnqueueing:shouldAppendItem:] + 341
3 AVFoundation 0x374e71f7 -[AVPlayer _insertPlaybackItemOfItem:inPlayerQueueAfterPlaybackItemOfItem:] + 43
4 AVFoundation 0x374eebf3 __-[AVPlayer _attachItem:andPerformOperation:withObject:]_block_invoke_2 + 1099
5 libdispatch.dylib 0x3641cd55 0x3641c000 + 3413
6 libdispatch.dylib 0x36427e8d 0x3641c000 + 48781
7 CoreFoundation 0x33b7e2dd 0x33af2000 + 574173
8 CoreFoundation 0x33b014dd 0x33af2000 + 62685
9 CoreFoundation 0x33b013a5 0x33af2000 + 62373
10 GraphicsServices 0x31f56fcd 0x31f53000 + 16333
11 UIKit 0x36d57743 0x36d26000 + 202563
12 AirplayTest 0x00002e45 main (main.m:16)
13 AirplayTest 0x00002dd4 start + 40
任何線索可能是什麼問題？
我有同樣的問題。它不會每次都發生，通常如果我在此期間啓動其他應用程序。我認爲這是由於MPMoviePlayerController的視圖的父視圖在設備需要更多資源時被錯誤地卸載造成的 – reddersky 2012-02-03 18:19:46
當它進入後臺時是否有任何代碼正在運行？ – Bot 2012-02-21 17:21:16
也有這個崩潰，你修好了嗎？ – 2012-09-03 12:55:03