UI总结-UIViewController

在AppDelegate.m文件中:

#import "AppDelegate.h"

#import "RootViewController.h"

#import "AppDelegate.h"

#import "RootViewController.h"

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

// Override point for customization after application launch.

self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]];

[self.window makeKeyAndVisible];

[_window release];

//就iOS开发来说，UIViewController就最核心的类型之一。而iOS的整个UI开发的核心思想也是MVC的架构，从UIViewController的命名就可以看出它在MVC中所扮演的角色，那就是Controller啦。

//创建一个视图控制器

RootViewController *vc = [[RootViewController alloc]init];

//给window指定一个根试图控制器

self.window.rootViewController = vc;

[vc release];

return YES;

}

在RootViewController.m文件中:

#import "RootViewController.h"

#import "CWCView.h"

@interface RootViewController ()

@end

@implementation RootViewController

// ViewController 的初始化方法

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{

self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

if (self) {

//这个方法即使不调用,在使用的过程中,系统也会自己调用这个方法

//一般在这个方法里面写容器的初始化,比如数组,字典等.

NSLog(@"我被使用了");

}

return self;

}

-(void)loadView{

//当view需要被展示而它却是nil时，viewController会调用该方法，如果代码构建View的话需要重写此方法。

[super loadView];

}

//执行完loadView后继续执行viewDidLoad，loadView时还没有view，而viewDidLoad时view已经创建好了。

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view.

self.view.backgroundColor = [UIColor whiteColor];

[self creatView];

NSLog(@"试图加载完成");

}

-(void)creatView{

UIButton *button1 =[UIButton buttonWithType:UIButtonTypeCustom];

button1 .frame = CGRectMake(100, 100, 100, 100);

button1.backgroundColor = [UIColor blueColor];

[button1 setTitle:@"确定" forState:UIControlStateNormal];

button1.layer.borderWidth = 1;

button1.layer.cornerRadius = 5;

[self.view addSubview:button1];

[button1 addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];

CWCView *myView = [[CWCView alloc]initWithFrame:CGRectMake(0, 50, 100, 100)];

[self.view addSubview:myView];

[myView release];

myView.myLabel.text = @"姓名";

myView.myTextField.placeholder = @"请输入姓名";

}

-(void)click:(UIButton *)button{

NSLog(@"11111");

UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"碉堡了" message:@"是吗" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:@"退出", nil];

alert.alertViewStyle = 3;

[alert show];

[alert release];

}

//根据被点击按钮的索引处理点击事件

-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{

UITextField *text = [alertView textFieldAtIndex:0];

NSLog(@"%@", text.text);

}

写了一个继承UIView的类, .h文件:

#import<UIKit/UIKit.h>

@interface CWCView : UIView

@property(nonatomic, retain)UILabel *myLabel;

@property(nonatomic, retain)UITextField *myTextField;

@end

.m文件:

#import "CWCView.h"

@interface CWCView ()

@end

@implementation CWCView

-(id)initWithFrame:(CGRect)frame{

self = [super initWithFrame:frame];

if (self) {

//在创建view的过程中,完成label和textfield的创建

[self creatView];

}

return self;

}

-(void)creatView{

self.myLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 150, 30)];

self.myLabel.layer.borderWidth = 2;

self.myLabel.layer.cornerRadius = 5;

self.myLabel.textAlignment = 1;

//self本身就是一个试图,所以,直接把空间添加到self上即可

[self addSubview:self.myLabel];

[_myLabel release];

self.myTextField = [[UITextField alloc]initWithFrame:CGRectMake(150, 0, 150, 30)];

self.myTextField.layer.borderWidth = 2;

self.myTextField.layer.cornerRadius = 5;

[self addSubview:self.myTextField];

[_myTextField release];

self.myTextField.clearButtonMode = UITextFieldViewModeAlways;

self.myTextField .delegate = self;

}

-(BOOL)textFieldShouldReturn:(UITextField *)textField{

[textField resignFirstResponder];

return YES;

}

-(void)dealloc{

[_myLabel release];

[_myTextField release];

[super dealloc];

}