一位用户报告我的应用程序在点击电子邮件按钮后立即崩溃。但是我无法在同一规格的设备上重现问题。
附加崩溃日志。我在reportVC.m中调用[self presentModalViewController:controller animated:YES];。控制器是MFMailComposeViewController的一个实例。
Incident Identifier: 4A06DE9B-178C-43C2-AE23-D8C7EEED7831
CrashReporter Key: 8b802dcda2f9dfd70003b0bedceac04ef79730f0
Hardware Model: iPad3,6
Process: ATracker [5610]
Path: /var/mobile/Applications/ACABBAE7-C701-48AD-9DAC-9B4C0ABD3CFF/ATracker.app/ATracker
Identifier: ATracker
Version: ??? (???)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2013-07-15 18:42:30.776 +0100
OS Version: iOS 6.1.3 (10B329)
Report Version: 104
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Crashed Thread: 0
Last Exception Backtrace:
0 CoreFoundation 0x3286c3e2 __exceptionPreprocess + 158
1 libobjc.A.dylib 0x3a70695e objc_exception_throw + 26
2 UIKit 0x34767118 -[UIViewController presentViewController:withTransition:completion:] + 3764
3 UIKit 0x34888d9e -[UIViewController presentModalViewController:animated:] + 26
4 ATracker 0x0007fac2 -[ReportVC sendEmail:] (ReportVC.m:1936)
5 UIKit 0x34766082 -[UIApplication sendAction:to:from:forEvent:] + 66
6 UIKit 0x34766036 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 26
7 UIKit 0x34766010 -[UIControl sendAction:to:forEvent:] + 40
8 UIKit 0x347658c6 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 498
9 UIKit 0x34765db4 -[UIControl touchesEnded:withEvent:] + 484
10 UIKit 0x3468e5f4 -[UIWindow _sendTouchesForEvent:] + 520
11 UIKit 0x3467b8dc -[UIApplication sendEvent:] + 376
12 UIKit 0x3467b1ea _UIApplicationHandleEvent + 6194
13 GraphicsServices 0x3636f5f2 _PurpleEventCallback + 586
14 GraphicsServices 0x3636f222 PurpleEventCallback + 30
15 CoreFoundation 0x328413e2 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 30
16 CoreFoundation 0x32841386 __CFRunLoopDoSource1 + 134
17 CoreFoundation 0x3284020a __CFRunLoopRun + 1378
18 CoreFoundation 0x327b3238 CFRunLoopRunSpecific + 352
19 CoreFoundation 0x327b30c4 CFRunLoopRunInMode + 100
20 GraphicsServices 0x3636e336 GSEventRunModal + 70
21 UIKit 0x346cf2b4 UIApplicationMain + 1116
22 ATracker 0x00044fe6 main (main.m:16)
23 ATracker 0x00044f9c start + 36
感谢任何想法或提示！
答案 0 :(得分：8)
应检测设备canSendMail
[MFMailComposeViewController canSendMail]
返回false。