---恢复内容开始---app
因为Xcode6以后,默认建立storyboard而非xib文件,而做为初学,了解xib的加载原理很重要,因此,须要建立一个没有storyboard的项目编辑器
选择 Single View Application , 点击Nextide
不须要选择core data,填好信息后,点击next,而后点击createatom
将storyboard和launchscreen扔进废纸篓spa
删除info.plist文件中Main storyboard file base name和Launch screen interface file base name两个属性3d
点击next,而后Save as “HelloWorldView”点击Createcode
从object library中拖出一个Lable,再拖出一个button造成下面图便可blog
建立视图和控制器的关联,Xcode默认建立了ViewController.h和ViewController.m文件,因此就不用本身建立了继承
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ViewControllerit
点击中间的两个圈,打开辅助编辑器
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,而后回车建立输出口
建立button的动做方法也是选定视图并按住controll键拖到辅助编辑区
建立好关联后,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,而后按command+option+6 打开Connection Inspector查看输出口和动做的关联,将View与ViewController从UIViewController中继承的view属性进行关联
关联好的链接检查器以下所示
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默认建立的AppDelegate.h文件中已存在如下代码:
1 #import <UIKit/UIKit.h> 2 3 @interface AppDelegate : UIResponder <UIApplicationDelegate> 4 5 @property (strong, nonatomic) UIWindow *window; 6 7 @end
Xcode默认为应用委托建立了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
其余代码不做修改,代码以下
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 //建立window 13 self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; 14 //建立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不少内容不正确的,请批评指出,谢谢