MPMoviePlayerController 堆栈溢出

Question

我正在尝试在一个相当简单的 iPhone 应用程序中使用 MPMoviePlayerController 。基本布局是与 UIWindow xib 文件关联的 UIApplicationDelegate。在 applicationDidFinishLaunching 方法中，我尝试使用以下代码播放电影：

// Path to the movie
NSString *path = [[NSBundle mainBundle] pathForResource:@"logoscreen" ofType:@"m4v"];      
movieURL = [NSURL fileURLWithPath:path];

// Setup the player
moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:movieURL];

// Use the new 3.2 style API  
moviePlayer.controlStyle = MPMovieControlStyleNone;  
moviePlayer.shouldAutoplay = YES;  
[window addSubview:moviePlayer.view];  

[moviePlayer setFullscreen:YES animated:YES];  

执行此代码时，我收到“EXC_BAD_ACCESS”错误，并且 GDB 加载了一个巨大的堆栈（使用“_makeSubtreePerformSelector”）方法重复数千次：

#6633   0x34b0cb0c in -[UIView(Hierarchy)         _makeSubtreePerformSelector:withObject:withObject:copySublayers:]
#6634   0x34b0cb0c in -[UIView(Hierarchy) _makeSubtreePerformSelector:withObject:withObject:copySublayers:]
#6635   0x34b0cb0c in -[UIView(Hierarchy) _makeSubtreePerformSelector:withObject:withObject:copySublayers:]
#6636   0x34b0cb0c in -[UIView(Hierarchy) _makeSubtreePerformSelector:withObject:withObject:copySublayers:]
#6637   0x34b0c9c4 in -[UIView(Hierarchy) _makeSubtreePerformSelector:withObject:]
#6638   0x34b0c790 in -[UIView(Internal) _addSubview:positioned:relativeTo:]
#6639   0x34b0c408 in -[UIView(Hierarchy) addSubview:]
#6640   0x33f81928 in -[MPInlineVideoViewController _transitionToFullscreenAnimated:]
#6641   0x33f7df5c in -[MPInlineVideoViewController setFullscreen:animated:]
#6642   0x33f05998 in -[MPMoviePlayerControllerNew setFullscreen:animated:]
#6643   0x33f059cc in -[MPMoviePlayerControllerNew setFullscreen:]
#6644   0x33f06b2c in -[MPMoviePlayerController setFullscreen:]
#6645   0x00002ab0 in -[GiyapLiteAppDelegate playMovie:] at GiyapLiteAppDelegate.m:67
#6646   0x000028a2 in -[GiyapLiteAppDelegate applicationDidFinishLaunching:] at GiyapLiteAppDelegate.m:38
#6647   0x34b16154 in -[UIApplication _callInitializationDelegatesForURL:payload:suspended:]
#6648   0x34cc46d4 in -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:]
#6649   0x34b7f7c0 in -[UIApplication handleEvent:withNewEvent:]
#6650   0x34b7eebc in -[UIApplication sendEvent:]
#6651   0x34b7e7f0 in _UIApplicationHandleEvent
#6652   0x33910ee4 in PurpleEventCallback
#6653   0x322352b2 in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__
#6654   0x322371dc in __CFRunLoopDoSource1
#6655   0x32238194 in __CFRunLoopRun
#6656   0x321df0c2 in CFRunLoopRunSpecific
#6657   0x321defd0 in CFRunLoopRunInMode
#6658   0x34b0ab20 in -[UIApplication _run]
#6659   0x34b08fc0 in UIApplicationMain
#6660   0x000026f8 in main at main.m:14

值得注意的是，如果我尝试基于单击事件播放电影的代码，它几乎就像应用程序尚未完成与窗口有关的“连接”操作。以前有人遇到过这样的事情吗？

Answer 1

也许您应该尝试将 animated 设置为 No。