Question

我的应用程序包含2个视图。 MainView和ResultsView。 MainView包含需要填充的UITextField，然后如果触摸了某个按钮，则视图将更改为ResultsView。下面是处理该问题的代码的多汁部分。

// In CallerIDAppDelegate.h
@class MainViewController;
@class ResultsViewController;

@interface CallerIDAppDelegate : NSObject <UIApplicationDelegate> {
    UIWindow *window;

    IBOutlet MainViewController *mainViewController;
    IBOutlet ResultsViewController *resultsViewController;

    NSString *phoneNumber;

   NSMutableArray *parsingResults;

   BOOL isSearchingForSaved;
}
[...]

// In CallerIDAppDelegate.m
[...]
- (void)applicationDidFinishLaunching:(UIApplication *)application {
    /* Set up and display MainView */
    MainViewController *mainController = [[MainViewController alloc]    initWithNibName:@"MainView" bundle:[NSBundle mainBundle]];
    self.mainViewController = mainController;
    [window addSubview:mainController.view];

    // Override point for customization after application launch
    [window makeKeyAndVisible];
}

-(void)switchViews{
    if(self.resultsViewController == nil){
        ResultsViewController *resultsController = [[ResultsViewController alloc] initWithNibName:@"ResultsViewController" bundle:nil];
        self.resultsViewController = resultsController;
        [resultsController release];
    }

    if(self.mainViewController.view.superview == nil){
        [resultsViewController.view removeFromSuperview];
        [window insertSubview:mainViewController.view atIndex:0];
    } else {
        [mainViewController.view removeFromSuperview];
        [window insertSubview:resultsViewController.view atIndex:0];
    }
}

现在在ResultsView我有一个包含一些内容的tableview。我想要做的是，当选择该表视图中的一行时，我想调用ABUnknownPersonViewController，以便用户可以将联系人保存到地址簿。

所以在ResultsViewController.m：

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    [...]
    ABUnknownPersonViewController *unknownPersonView = [[[ABUnknownPersonViewController alloc] init] autorelease];

    [unknownPersonView setUnknownPersonViewDelegate:self];

    [unknownPersonView setDisplayedPerson:personRecord];
    [unknownPersonView setAllowsAddingToAddressBook:YES];

    UINavigationController *navigationController = [[[UINavigationController alloc] initWithRootViewController:unknownPersonView] autorelease];


    [self presentModalViewController:navigationController animated:YES];
}

- (void)unknownPersonViewController:(ABUnknownPersonViewController *)unknownPersonView didResolveToPerson:(ABRecordRef)person {
    CallerIDAppDelegate *delegate = (CallerIDAppDelegate *)[[UIApplication sharedApplication] delegate];
    DLog("Called!");
    [self dismissModalViewControllerAnimated:YES]; //caused crash

    // Caused crash too
    //[delegate.resultsViewController dismissModalViewControllerAnimate:YES]; 
}

选择行时，ABUnknownPersonViewController会正确显示。它还包含通过personRecord发送的所有正确信息，并在按下“添加到联系人”按钮时将联系人正确保存在地址簿中。但是，当在最后一步按下完成（或取消）按钮时，它崩溃了很糟糕！

问题是，我无法从调试器中理解任何内容，因为在启动时，它会说“加载43453堆栈帧......”，我停止了哪个程序。堆栈跟踪的顶部是：

[CALayer sublayers];

然后有很多的

[UIView(Hierarchy) _makeSubtreePerformSelector:withObject:withObject:copySublayers:]

请赐教。我确信这可能是一个有点愚蠢的事情，我做错了。我一直在努力解决这个问题，但我做不到。：（

Answer 1

修复它.....确实很愚蠢。

应该是：

- (void)unknownPersonViewController:(ABUnknownPersonViewController *)unknownPersonView didResolveToPerson:(ABRecordRef)person {
CallerIDAppDelegate *delegate = (CallerIDAppDelegate *)[[UIApplication sharedApplication] delegate];
DLog("Called!");
[unknownPersonView dismissModalViewControllerAnimated:YES];

}

解雇ABUnknownPersonViewController的问题。在解雇时显示正常但应用程序崩溃

1 个答案: