应用程序在 iOS 5、iOS 6 上运行，但在 iOS 7 上崩溃答案

【问题标题】：App running on iOS 5, iOS 6, but crashing on iOS 7应用程序在 iOS 5、iOS 6 上运行，但在 iOS 7 上崩溃
【发布时间】：2013-11-13 21:21:52
【问题描述】：

我们已经在应用商店提交了该应用，并获得了批准。但是一天后我们发现它在 iOS 5 和 6 上运行良好，但在 iOS7 上却崩溃了。

以下是崩溃日志。

Nov 14 01:45:16 Mys-iPhone AchMyieveCard[4871] <Warning>: Successfully received the test notification!
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: Remove User
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: Hide the Progress Bar1
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: Hide waiting view
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: Hide the Progress Bar2
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>:   view did dis appear
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: MainNavController :: setMyToolbar
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: Menu Name = My Cards
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: MCPClient :: Method to prepare URL with provided url parameter values
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: Key : lastName                      
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: Value : Cunningham
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: key lastName, value Cunningham
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: Key : ssn4                          
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: Value : 2123
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: key ssn4, value 2123
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: Key : zipCode                       MyNov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: Value : 12345
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: key zipCode, value 12345
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: Prepared URL after appending parameters lastName=Cunningham&ssn4=2123&zipCode=12345
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: Hidden  ---  0
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: View Controllers = (
        "<UINavigationController: 0x16557a40>",
        "<UINavigationController: 0x165cd7b0>",
        "<UINavigationController: 0x165d6490>",
        "<UINavigationController: 0x165d89e0>"
    )
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>: View will appear
Nov 14 01:45:16 Mys-iPhone MyApp[4871] <Warning>:  --- >>>>>   hasEnteredInAppFirstTime ::: 1
Nov 14 01:45:16 Mys-iPhone ReportCrash[4877] <Notice>: ReportCrash acting against PID 4871
Nov 14 01:45:16 Mys-iPhone ReportCrash[4877] <Notice>: Formulating crash report for process MyApp[4871]
Nov 14 01:45:16 Mys-iPhone com.apple.launchd[1] (UIKitApplication:com.i2cinc.MyApp[0xbb1c][4871]) <Warning>: (UIKitApplication:com.i2cinc.MyApp[0xbb1c]) Job appears to have crashed: Segmentation fault: 11
Nov 14 01:45:16 Mys-iPhone backboardd[28] <Warning>: Application 'UIKitApplication:com.i2cinc.MyApp[0xbb1c]' exited abnormally with signal 11: Segmentation fault: 11
Nov 14 01:45:16 Mys-iPhone ReportCrash[4877] <Notice>: Saved crashreport to /var/mobile/Library/Logs/CrashReporter/MyApp_2013-11-14-014516_Mys-iPhone.plist using uid: 0 gid: 0, synthetic_euid: 501 egid: 0
Nov 14 01:45:25 Mys-iPhone mstreamd[4878] <Notice>: (Note ) mstreamd: mstreamd starting up.
Nov 14 01:45:25 Mys-iPhone mstreamd[4878] <Notice>: (Note ) PS: Media stream daemon starting...
Nov 14 01:45:26 Mys-iPhone awdd[4879] <Error>: CoreLocation: CLClient is deprecated. Will be obsolete soon.
Nov 14 01:45:36 Mys-iPhone routined[34] <Notice>: CoreLocation: </System/Library/LocationBundles/Routine.bundle> woken up by Core Location
Nov 14 01:45:36 Mys-iPhone kernel[0] <Debug>: 154088.182708 wlan.A[27556] AppleBCMWLANNetManager::updateLinkQualityMetrics(): Report LQM to User Land 100, fAverageRSSI -69
Nov 14 01:45:36 Mys-iPhone backboardd[28] <Warning>: Launch Services: Registering unknown app identifier /System/Library/LocationBundles/Routine.bundle failed
Nov 14 01:45:36 Mys-iPhone backboardd[28] <Warning>: Launch Services: Unable to find app identifier /System/Library/LocationBundles/Routine.bundle
Nov 14 01:45:36 Mys-iPhone SpringBoard[33] <Warning>: Unknown application display identifier /System/Library/LocationBundles/Routine.bundle.

代码

 NSLog(@"View will appear");
        NSLog(@" --- >>>>>   hasEnteredInAppFirstTime ::: %u", [mClient hasEnteredInAppFirstTime]);
        if([mClient hasEnteredInAppFirstTime]) {
            mClient.hasEnteredInAppFirstTime = NO;

            NSLog(@"Default Screen %@", mClient.defaultScreen);
            if([mClient defaultScreen] == (id)[NSNull null] || [mClient defaultScreen].length == 0 ) {

                NSLog(@"Default screen is nil, going to load dashboard");
                [mClient setUPProgressHUDForView:self.view withLable:@"Generating Dashboard" andMessage:@"Please Wait.."];
                for(UIView *subview in [self.scrollView subviews]) {
                    [subview removeFromSuperview];
                }
                NSLog(@"-->    :::  Going to change here");
                [self generateDashboard];
            } else {
                NSLog(@"Going to push default screen : %@", mClient.defaultScreen);
                //[mClient setUPProgressHUDForView:self.view withLable:@"Loading Default Screen" andMessage:@"Please Wait.."];
                [self pushDefaultScreen:mClient.defaultScreen];
            }
        }

请帮助我，让我知道问题出在哪里、为什么会崩溃以及解决方案是什么。

【问题讨论】：

这些NSLogs 来自生产（应用商店版本）吗？还是发展？
这些是表单制作应用
在生产代码中使用NSLogs 是一种不好的做法。阅读stackoverflow.com/questions/300673/…
如果hasEnteredInAppFirstTime 是TRUE 你永远不会到达NSLog(@"Default Screen %@", mClient.defaultScreen);，因为这条线没有被注销。你确定你甚至进入了这个If statement。我认为您的问题不在这里。
你没有提供崩溃日志，你提供了控制台日志。

标签： ios iphone objective-c crash ios7

【解决方案1】：

你正在改变一个数组，因为你改变它：

for(UIView *subview in [self.scrollView subviews]) {
   [subview removeFromSuperview];
}

您应该复制子视图数组，并将消息发送到其中的每个对象：

NSArray *oldSubviews = [self.scrollView.subviews copy];
for(UIView *subview in oldSubviews) {
   [subview removeFromSuperview];
}

【讨论】：

【解决方案2】：

我正在访问 移动客户端默认屏幕 另一个类的属性。并且在 defaultScreen 中设置值时，我没有使用这个带有属性名称的运算符。这在 iOS6 中运行良好，但在 iOS7 中导致崩溃。

mClient 中的上一行代码： defaultScreen = @"网名";

新代码： this.defaultScreen = @"网名";

现在崩溃已修复。 :-)

【讨论】：