Question

所以我有 AppDelegate 方法尝试在 ViewController 方法中设置对象。我的 AppDelegate 如下所示：

    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad)
    {
    //Grab a reference to the UISplitViewController
    UISplitViewController *splitViewController = (UISplitViewController *)self.window.rootViewController;

    PatientDetailViewController* patientDetailViewController = [splitViewController.viewControllers lastObject];
    splitViewController.delegate = patientDetailViewController;


    //Grab a reference to the masterviewcontroller and get the first patient in the list.
    UINavigationController *patientNavController = [splitViewController.viewControllers objectAtIndex:0];
    PatientMasterTableViewController *patientMasterViewController = (PatientMasterTableViewController *)[patientNavController topViewController];

    Patient* firstPatient = [[patientMasterViewController patientArray] objectAtIndex:0];

    //Set it as the detailviews patient.
    [patientDetailViewController setPatient:firstPatient];

    //Set the detail's as the left's delegate.
    patientMasterViewController.delegate = patientDetailViewController;
    }

return YES;
}

并且设置对象的方法如下所示：

-(void)setPatient:(Patient *)patient
{

if (![self.patient isEqual:patient])
    {
    self.patient = patient;

    //Update the UI to reflect the new patient selected from the list.
    [self refreshUI];
    }
}

我遇到的问题是setPatient方法将被停止调用，直到程序崩溃并且我不知道为什么。任何人都可以对此有所了解吗？

Answer 1

此：

-(void)setPatient:(Patient *)patient
{
if (![self.patient isEqual:patient])
    {
    self.patient = patient;

    //Update the UI to reflect the new patient selected from the list.
    [self refreshUI];
    }
}

应该是：

-(void)setPatient:(Patient *)patient
{
    _patient = patient;
    [self refreshUI];
}

App委托重复调用方法

1 个答案: