iOS.UIKit.09.UINavigationBar
一、点击UINavigationBar中的UIBarButtonItem,改变UILabel中的文本,如图01,02,03
图01图02图03
二、项目步骤:
1、选择Simple View Aplication,取名cq.40.UINavigationBar,如图04
图04
2、Main.storyboard,如图05
3、CQ40ViewController.h
#import <UIKit/UIKit.h> @interface CQ40ViewController : UIViewController @property (weak,nonatomic) IBOutlet UILabel *label; - (IBAction)save:(id)sender; - (IBAction)add:(id)sender; @end
4、CQ40ViewController.m
#import "CQ40ViewController.h" @interface CQ40ViewController () @end @implementation CQ40ViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (IBAction)save:(id)sender { self.label.text = @"click Save"; } - (IBAction)add:(id)sender { self.label.text = @"click Add"; } @end
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