iOS：应用程序崩溃“ – [MFMailComposeInternalViewController _notifyCompositionDidFinish]”

概述根据崩溃的人在使用iPad时崩溃.他们收到的崩溃错误是 – [MFMailComposeInternalViewController _notifyCompositionDidFinish]我不知道这是怎么发生的.这是例外 崩溃：com.apple.main-thread EXC_BAD_ACCESS KERN_INVALID_ADDRESS位于0x0000000c 这是原始数据 Thread : 根据崩溃的人在使用iPad时崩溃.他们收到的崩溃错误是 – [MFMailComposeInternalVIEwController _notifyCompositionDIDFinish]我不知道这是怎么发生的.这是例外
崩溃：com.apple.main-thread
EXC_BAD_ACCESS KERN_INVALID_ADDRESS位于0x0000000c

这是原始数据

Thread : Crashed: com.apple.main-thread0  libobjc.A.dylib                0x30fa4f46 objc_msgSend + 51  MessageUI                      0x252e5f01 -[MFMailComposeInternalVIEwController _notifyCompositionDIDFinish] + 4642  CoreFoundation                 0x23524294 __invoking___ + 683  CoreFoundation                 0x23451435 -[NSInvocation invoke] + 3004  libdispatch.dylib              0x314f87bb _dispatch_call_block_and_release + 105  libdispatch.dylib              0x314f87a7 _dispatch_clIEnt_callout + 226  libdispatch.dylib              0x314fbfa3 _dispatch_main_queue_callback_4CF + 7187  CoreFoundation                 0x234e59d1   __CFRUNLOOP_IS_SERviciNG_THE_MAIN_disPATCH_QUEUE__ + 88  CoreFoundation                 0x234e40d1 __CFRunLoopRun + 15129  CoreFoundation                 0x23432211 CFRunLoopRunspecific + 47610 CoreFoundation                 0x23432023 CFRunLoopRunInMode + 10611 GraphiCSServices               0x2a7c20a9 GSEventRunModal + 13612 UIKit                          0x26a3e1d1 UIApplicationMain + 144013 MyApp                          0x0009e7e7 main (main.m:16)

不知道我怎么诊断它.

解决方法 当MFMailComposeInternalVIEwController对象被释放并且MFMailComposeInternalVIEwControllerDelegate被触发时,会发生此崩溃.

确保保留MFMailComposeInternalVIEwController对象,直到委托激活为止,然后您可以安全地关闭MFMailComposeInternalVIEwController对象.

-(voID)mailComposeController:(MFMailComposeVIEwController *)controller dIDFinishWithResult:(MFMailComposeResult)result error:(NSError *)error{    switch (result) {        case MFMailComposeResultCancelled:            break;        case MFMailComposeResultSaved:            break;        case MFMailComposeResultSent:            break;        case MFMailComposeResultFailed:            break;        default:            break;    }    [controller dismissVIEwControllerAnimated:YES completion:nil];}

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