如何从iPhone读取崩溃报告
从beta测试人员那里得到了一份崩溃报告，我很难找到问题的根源。显然，当试图设置UIButton（screenOverlay）时出错了。以下是它在ViewDidLoad中的创建：如何从iPhone读取崩溃报告,iphone,cocoa-touch,stack-trace,Iphone,Cocoa Touch,Stack Trace,从beta测试人员那里得到了一份崩溃报告，我很难找到问题的根源。显然，当试图设置UIButton（screenOverlay）时出错了。以下是它在ViewDidLoad中的创建： UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; button.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height); butto
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
button.backgroundColor = [UIColor blackColor];
button.alpha = 0.0;
button.hidden = YES;
[button addTarget:self.noteView action:@selector(backgroundClicked:) forControlEvents:UIControlEventTouchUpInside];
self.screenOverlay = button;
[self.view addSubview:screenOverlay];
[button release];
Date/Time: 2009-09-04 08:42:05.341 -0700
OS Version: iPhone OS 3.0.1 (7A400)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x80000408
Crashed Thread: 0
Thread 0 Crashed:
0 libobjc.A.dylib 0x30011960 objc_msgSend + 52
1 libobjc.A.dylib 0x3001313c objc_setProperty + 160
2 MyApp 0x00003258 -[ItemizeViewController setScreenOverlay:] (ItemizeViewController.m:24)
3 MyApp 0x00003920 -[ItemizeViewController viewDidLoad] (ItemizeViewController.m:229)
4 UIKit 0x3093d5e4 -[UIViewController view] + 152
5 UIKit 0x30a56d84 -[UIViewController contentScrollView] + 24
6 UIKit 0x30973ee0 -[UINavigationController _startTransition:fromViewController:toViewController:] + 180
7 UIKit 0x30973d90 -[UINavigationController _startDeferredTransitionIfNeeded] + 256
8 UIKit 0x309a7468 -[UINavigationController _popViewControllerWithTransition:allowPoppingLast:] + 400
9 UIKit 0x309a72c8 -[UINavigationController popViewControllerAnimated:] + 32
10 UIKit 0x309a7a0c -[UINavigationController navigationBar:shouldPopItem:] + 132
11 UIKit 0x309a77e8 -[UINavigationBar popNavigationItemAnimated:] + 184
12 UIKit 0x30a3667c -[UINavigationBar _handleMouseUpAtPoint:] + 536
13 UIKit 0x30a34f64 -[UINavigationBar touchesEnded:withEvent:] + 84
14 UIKit 0x309a60d4 -[UIWindow _sendTouchesForEvent:] + 520
15 UIKit 0x309a5464 -[UIWindow sendEvent:] + 108
16 UIKit 0x30936e3c -[UIApplication sendEvent:] + 400
17 UIKit 0x30936874 _UIApplicationHandleEvent + 4336
18 GraphicsServices 0x32046964 PurpleEventCallback + 1028
19 CoreFoundation 0x30254a70 CFRunLoopRunSpecific + 2296
20 CoreFoundation 0x30254164 CFRunLoopRunInMode + 44
21 GraphicsServices 0x3204529c GSEventRunModal + 188
22 UIKit 0x308f0374 -[UIApplication _run] + 552
23 UIKit 0x308eea8c UIApplicationMain + 960
24 MyApp 0x00002090 main (main.m:14)
25 MyApp 0x0000202c start + 44
Thread 1:
0 libSystem.B.dylib 0x31d47158 mach_msg_trap + 20
1 libSystem.B.dylib 0x31d49ed8 mach_msg + 60
2 CoreFoundation 0x3025454e CFRunLoopRunSpecific + 982
3 CoreFoundation 0x30254164 CFRunLoopRunInMode + 44
4 WebCore 0x3588dbc8 RunWebThread(void*) + 412
5 libSystem.B.dylib 0x31d705a0 _pthread_body + 20
Thread 0 crashed with ARM Thread State:
r0: 0x0018e4e0 r1: 0x300991c4 r2: 0x43a00000 r3: 0x00001108
r4: 0x80000408 r5: 0x00000001 r6: 0x00000000 r7: 0x2fffeb94
r8: 0x43a00000 r9: 0x001fc098 r10: 0x301038dc r11: 0x30082134
ip: 0x381fd03c sp: 0x2fffeb74 lr: 0x30013144 pc: 0x30011960
cpsr: 0xa0000010
从上面的代码中，我看到了以下内容
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
然后你调用[button release]，这可能会导致你的问题，你调用的clas方法不会保留对象，因为它是自动释放的，所以你对对象调用release，稍后当它尝试自动释放时，你会遇到崩溃…非常确定这是你的问题…删除[buttom release]你应该没事，从上面的代码来看，这基本上是一个过度发布的问题，我看到了以下几点
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
然后你调用[button release]，这可能会导致你的问题，你调用的clas方法不会保留对象，因为它是自动释放的，所以你对对象调用release，稍后当它尝试自动释放时，你会遇到崩溃…非常确定这是你的问题…删除[buttom release]你应该没问题，这基本上是一个过度发布的问题screenOverlay是如何定义的？如何将其设置为ItemizeViewController的属性？@property（非原子，保留）UIButton*screenOverlay；screenOverlay是如何定义的？如何将其设置为ItemizeViewController的属性？@property（非原子，保留）UIButton*screenOverlay；的确我真傻。奇怪的一个，因为它只崩溃每20左右使用。。。我的大部分过度发布问题都会导致即时爆炸！谢谢你的帮助！的确我真傻。奇怪的一个，因为它只崩溃每20左右使用。。。我的大部分过度发布问题都会导致即时爆炸！谢谢你的帮助！