为什么UISearchBar在UISearchBarDelegate添加UISearchBar时不调用UISearchBar？

Question

我已经设置了UISearchBar的委托，但是为什么它在操作UISearchBarDelegate时不调用hospitalSearchBar。

TestViewController.h

#import "TestViewController.h"

@interface TestViewController : UIViewController<UISearchBarDelegate>

- (IBAction)buttonClick:(id)sender;

@end

TestViewController.m

#import "TestViewController.h"

@implementation TestViewController

- (IBAction)buttonClick:(id)sender
{
        UISearchBar *hospitalSearchBar = [[UISearchBar alloc] init];
        [hospitalSearchBar setDelegate:self];
        [hospitalSearchBar setShowsSearchResultsButton:YES];
        UIPickerView *hospitalPickerview = [[UIPickerView alloc] init];
        MAlertView *alert = [[MAlertView alloc] initWithTitle:@"" message:nil delegate:self cancelButtonTitle:@"提交" otherButtonTitles:@"cancel", nil];
        [alert addSearchBar:hospitalSearchBar placeHolder:@"Key Word"];
        [alert addPickerView:hospitalPickerView];
        [alert setDelegate:self];
        [alert show];
}

- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar{return YES;}

- (BOOL)searchBar:(UISearchBar *)searchBar shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text{return YES;}

- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar{[self endEditing:YES];}

@end

Answer 1

您的代码给了我错误:)

不过，我的观点是，您要在一个delegate self) (带有delegate self)的子类)中添加UISearchBar。

因此，在MAlertView中实现委托，您就可以在MAlertView类中检测到UISearchBar委托。

如果没有修复，请提供我的MAlertView类的全部实现细节。