navigationController：willShowViewController：動畫：問題

Question

我的應用程序現在是comatible只與iOS 7和iOS 8，我有這種方法的一個問題：

-(void)navigationController:(UINavigationController *)navigationController 
    willShowViewController:(UIViewController *)viewController 
    animated:(BOOL)animated 
{ 
    ... 
} 

這只是叫的iOS 7，文檔不要t說thas在iOS 8中不推薦使用。有什麼不對，有什麼想法？

我使用的Xcode 6.0.1版（6A317）在小牛

我在另一個類中聲明委託：

ABPeoplePickerNavigationController *contactos = [[ABPeoplePickerNavigationController alloc] init]; 
contactos.displayedProperties = [NSArray arrayWithObject:[NSNumber numberWithInt:kABPersonPhoneProperty]]; 

// Delegate 
pickerDelegate = [[PickerDelegate alloc] init]; 
contactos.peoplePickerDelegate = pickerDelegate; 
contactos.topViewController.navigationController.delegate = pickerDelegate; 

其中PickerDelegate.h：

#import <Foundation/Foundation.h> 
#import <AddressBook/AddressBook.h> 
#import <AddressBookUI/AddressBookUI.h> 

@interface PickerDelegate : NSObject <UINavigationControllerDelegate, ABPeoplePickerNavigationControllerDelegate, ABPersonViewControllerDelegate, ABNewPersonViewControllerDelegate> 
{ 
    ... 
} 

Answer 1

問題是你沒有設置ABPeoplePickerNavigationController的delegate（UINavigationControllerDelegate）。您正在設置其pickerDelegate（ABPeoplePickerNavigationControllerDelegate），但這不是一回事。