大锐哥的iOS开发教程(3)用代码实现HelloWorld工程

iOS Dev (3) HelloWorld with codes

• 作者：爱欧艾斯鸟

删除

• 删除 HelloWorldViewController.xib文件
• 删除 HelloWorldViewController.m 中的 viewDidLoad

添加

• 添加 loadView 到 HelloWorldViewController.m
    - (void)loadView
•   {
•       UIView *view =
•           [[UIView alloc] initWithFrame: [UIScreen mainScreen].applicationFrame];
•       self.view = view;
•       UILabel *label2 = [[UILabel alloc] initWithFrame: CGRectMake(0, 110, 150, 100)];
•       label2.text = @"Hello World 2";
•       [self.view addSubview: label2];
•       [label2 release];
•   }
• UIScreen: UIKit.framework component;
• UILabel: UIKit.framework component;
• CGRectMake: CoreGraphics.framework component;

Run it!

(THE END)