应用程序在首次使用UIImagePickerController时崩溃

Question

我正在尝试在我的应用程序中使用UIImagePickerController，并在第一次提示访问相册后发生崩溃。这是崩溃错误：

[PUUIAlbumListViewController requiresAuth]：无法识别的选择器发送到实例0xd6a18b0

我无法在任何地方找到任何对此错误的引用。有人有任何线索吗？谢谢！

-(void)showPicker
{    
    self.imagePicker = [[UIImagePickerController alloc]init];
    self.imagePicker.delegate = self;
    self.imagePicker.allowsEditing = NO;
    self.imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    self.imagePicker.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypePhotoLibrary];


    self.imagePicker.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
    [self presentViewController:self.imagePicker animated:YES completion:nil];    
}




*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[PUUIAlbumListViewController requiresAuth]: unrecognized selector sent to instance 0xd1587d0'
*** First throw call stack:
(
    0   CoreFoundation                      0x03bcb5e4 __exceptionPreprocess + 180
    1   libobjc.A.dylib                     0x0394e8b6 objc_exception_throw + 44
    2   CoreFoundation                      0x03c68903 -[NSObject(NSObject) doesNotRecognizeSelector:] + 275
    3   CoreFoundation                      0x03bbb90b ___forwarding___ + 1019
    4   CoreFoundation                      0x03bbb4ee _CF_forwarding_prep_0 + 14
    5   MyApp Mobile                      0x000042e8 -[MyAppDelegate applicationDidBecomeActive:] + 2989
    6   UIKit                               0x027afef4 -[UIApplication _stopDeactivatingForReason:] + 329
    7   UIKit                               0x027b5afb _alertItemStateChanged + 81
    8   CoreFoundation                      0x03c27733 __CFNotificationCenterAddObserver_block_invoke + 163
    9   CoreFoundation                      0x03c27524 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 20
    10  CoreFoundation                       0x03c277fd ____CFXNotificationPostToken_block_invoke + 173
    11  CoreFoundation                      0x03b8a1c0 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 16
    12  CoreFoundation                      0x03b533f9 __CFRunLoopDoBlocks + 361
    13  CoreFoundation                      0x03b71843 __CFRunLoopRun + 2355
    14  CoreFoundation                      0x03b70ac3 CFRunLoopRunSpecific + 467
    15  CoreFoundation                      0x03b708db CFRunLoopRunInMode + 123
    16  GraphicsServices                    0x0477f9e2 GSEventRunModal + 192
    17  GraphicsServices                    0x0477f809 GSEventRun + 104
    18  UIKit                               0x027b6d3b UIApplicationMain + 1225
    19  MyApp                      0x00166361 main + 264
    20  libdyld.dylib                       0x0431e725 start + 0
)
libc++abi.dylib: terminating with uncaught exception of type NSException

Answer 1

看起来崩溃直接与UIImagePickerController无关，但是当在self.navigationController.visibleViewController上调用选择器而没有检查visibileViewController是否响应选择器时，在applicationDidBecomeActive的appdelegate中发生了崩溃。

Answer 2

您的代码正在寻找一个方法：您的类中的requiresAuth：PUUIAlbumListViewController。它不在那里。对丢失的方法进行编码或删除对它的调用。