UI总结-UIViewController
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];
}
