我已经创建了一个基于视图的应用程序 . 我在视图和两个按钮上放置了一个导航栏 . 按下按钮后,我想更改导航栏的 Headers . 在IB中,我将按钮与相应的动作连接起来 . 调试显示调用了操作,但导航栏的 Headers 未更改 .
请帮忙!
//
// NavBarViewController.h
#import <UIKit/UIKit.h>
@interface NavBarViewController : UIViewController {
}
-(IBAction) clickedOne: (id)sender;
-(IBAction) clickedTwo: (id)sender;
@end
//
// NavBarViewController.m
#import "NavBarViewController.h"
@implementation NavBarViewController
-(IBAction) clickedOne: (id)sender {
self.navigationItem.title = @"1";
}
-(IBAction) clickedTwo: (id)sender {
self.navigationItem.title = @"2";
}
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
}
@end
1 回答
我找到了 . 我使用了UINavgationItem并将IB中的IBOutlet与UINavigationItem连接起来 .