http://www.mamicode.com/info-detail-514151.html
由于Xcode6之后,默认创建storyboard而非xib文件,而作为初学,了解xib的加载原理很重要,所以,需要创建一个没有storyboard的项目
选择 Single View Application , 点击Next
不需要选择core data,填好信息后,点击next,然后点击create
将storyboard和launchscreen扔进废纸篓
删除info.plist文件中Main storyboard file base name和Launch screen interface file base name两个属性
点击next,然后Save as “HelloWorldView”点击Create
从object library中拖出一个Lable,再拖出一个button形成下面图即可
创建视图和控制器的关联,Xcode默认创建了ViewController.h和ViewController.m文件,所以就不用自己创建了
点击列表中的File‘s Owner,按command+option+3 打开 Identity Inspector,修改Custom Class中的Class为ViewController
选定Lable视图同时按住control键拖到ViewController.h的@interface与@end中间会弹出菜单,按照下图填写内容,然后回车创建输出口
创建button的动作方法也是选定视图并按住controll键拖到辅助编辑区
创建好关联后,ViewController.h的代码变为:
1 #import <UIKit/UIKit.h> 2 3 @interface ViewController : UIViewController 4 @property (weak, nonatomic) IBOutlet UILabel *helloLable; 5 - (IBAction)helloButton:(UIButton *)sender; 6 7 @end
点击xib列表中的File‘s Owner,然后按command+option+6 打开Connection Inspector查看输出口和动作的关联,将View与ViewController从UIViewController中继承的view属性进行关联
关联好的连接检查器如下所示
1 #import "ViewController.h" 2 3 @interface ViewController () 4 5 @end 6 7 @implementation ViewController 8 9 - (void)viewDidLoad { 10 [super viewDidLoad]; 11 // Do any additional setup after loading the view, typically from a nib. 12 13 } 14 15 - (void)didReceiveMemoryWarning { 16 [super didReceiveMemoryWarning]; 17 // Dispose of any resources that can be recreated. 18 } 19 20 - (IBAction)helloButton:(UIButton *)senhder { 21 self.helloLable.frame = CGRectMake(10, 50, 300, 40); 22 self.helloLable.text = @"Hello World!"; 23 } 24 @end
8. 修改AppDelegate.m 文件
在Xcode默认创建的AppDelegate.h文件中已存在以下代码:
1 #import <UIKit/UIKit.h> 2 3 @interface AppDelegate : UIResponder <UIApplicationDelegate> 4 5 @property (strong, nonatomic) UIWindow *window; 6 7 @end
Xcode默认为应用委托创建了window的属性,打开AppDlegate.m文件,引入ViewController.h
重写AppDlegate.m文件的- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions方法
其他代码不作修改,代码如下
1 #import "AppDelegate.h" 2 #import "ViewController.h" 3 @interface AppDelegate () 4 5 @end 6 7 @implementation AppDelegate 8 9 10 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { 11 // Override point for customization after application launch. 12 //创建window 13 self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; 14 //创建ViewController实例 15 ViewController *viewController = [[ViewController alloc] initWithNibName:@"HelloWorldView" bundle:nil]; 16 //设置window根视图控制器 17 self.window.rootViewController = viewController; 18 self.window.backgroundColor = [UIColor whiteColor]; 19 [self.window makeKeyAndVisible]; 20 return YES; 21 }
command+R
初学iOS很多内容不正确的,请批评指出,谢谢