我的一个用户报告他的设备 iPhone 3GS 发生了崩溃。相同类型的其他设备未报告类似行为。他给我发了一个崩溃日志,根据阅读它,我不知道如何继续。我希望我没有错误地解释崩溃日志,但看起来我的操作还没有被调用。
这就是我创建和设置 UIBarButtonItem 的方式:
- (void)viewDidLoad {
[super viewDidLoad];
UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(addLog:)];
self.navigationItem.rightBarButtonItem = addButton;
[addButton release];
}
这是我的操作方法:
- (IBAction)addLog:(id)sender {
MyViewController *myController = [[MyViewController alloc] initWithNibName:@"MyNib" bundle:nil];
UINavigationController *subNavigationController = [[UINavigationController alloc] initWithRootViewController: myController];
[self presentModalViewController:subNavigationController animated:YES];
[myController release];
[subNavigationController release];
}
这是崩溃日志:
异常类型:EXC_CRASH (SIGABRT) 异常代码:0x00000000、0x00000000Crashed 线程:0 线程 0 崩溃: 0 libSystem.B.dylib 0x0007e98c __kill + 81 libSystem.B.dylib 0x0007e97c 杀死 + 4 2 libSystem.B.dylib 0x0007e96e 提高 + 10 3 libSystem.B.dylib 0x0009361a 中止 + 34 4 我的应用程序 0x000042e8 0x1000 + 13032 5 CoreFoundation 0x00058ede-[NSObject performSelector:withObject:withObject:] + 18 6 UIKit 0x0004205e-[UIApplication sendAction:to:from:forEvent:] + 78 7 UIKit 0x00094d4e-[UIBarButtonItem(内部)_sendAction:withEvent:] + 86 8 CoreFoundation 0x00058ede-[NSObject performSelector:withObject:withObject:] + 18 9 UIKit 0x0004205e-[UIApplication sendAction:to:from:forEvent:] + 78 10 UIKit 0x00041ffe-[UIApplication sendAction:toTarget:fromSender:forEvent:] + 26 11 UIKit 0x00041fd0-[UIControl sendAction:to:forEvent:] + 32 12 UIKit 0x00041d2a-[UIControl(内部)_sendActionsForEvents:withEvent:] + 350 13 UIKit 0x0004263e-[UIControl touchesEnded:withEvent:] + 330 14 UIKit 0x00041656-[UIWindow_sendTouchesForEvent:] + 318 15 UIKit 0x00041032 -[UIWindow 发送事件:] + 74