作者：韩俊强 未经允许，请勿转载！
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声明：UILTView 指：UILabel 和 UITextField 的复合
#import "AppDelegate.h"
@interface AppDelegate ()<</span>UITextFieldDelegate>
@end
@implementation AppDelegate
- (void)dealloc{
self.window = nil;
[super dealloc];
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions {
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]autorelease];
//主视图
UIView *contenView = [[UIView alloc]initWithFrame:[UIScreen mainScreen].bounds];
contenView.tag = 300;
contenView.backgroundColor = [UIColor brownColor];
[self.window addSubview:contenView];
[contenView release];
//数据源：是用来提供数据
//label上的数据
NSArray *texts = @[@"用户名",@"密码",@"确认密码",@"手机号",@"邮箱"];
//textField上的数据
NSArray *placegolds = @[@"请输入用户名",@"请输入密码",@"请再次确认密码",@"请输入手机号",@"请输入邮箱"];
———————————————————————————————————————
for循环布局：
for (int i = 0; i <</span> 5; i ++) {
UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(20, 40 + 50 *i, 60, 30)];
label.backgroundColor = [UIColor greenColor];
label.text = texts[i];
label.layer.cornerRadius = 10;//切圆角
label.layer.masksToBounds = YES;
label.tag = 100 + i;
label.font = [UIFont boldSystemFontOfSize:15];
label.textAlignment = NSTextAlignmentCenter;//居中对齐
[contenView addSubview:label];
[label release];
UITextField *field = [[UITextField alloc]initWithFrame:CGRectMake(100, 40 + 50 * i, 200,30)];
field.placeholder = placegolds[i];//输入提示内容
field.borderStyle = UITextBorderStyleRoundedRect;
field.backgroundColor = [UIColor cyanColor];
field.tag = 200 + i;
//添加代理
field.delegate =self;
[contenView addSubview:field];
[field release];
if (1 == i || 2 == i) {
field.secureTextEntry = YES;//加密框显示
}
if (3 == i ) {
field.keyboardType = UIKeyboardTypeNumberPad;//显示数字键盘
}
}
——————————————————————————————————
//登录
UIButton *loginBotton = [UIButton buttonWithType:UIButtonTypeSystem];
loginBotton.frame = CGRectMake(40, 300, 100, 30);
loginBotton.backgroundColor = [UIColor yellowColor];
[loginBotton setTitle:@"登录" forState:UIControlStateNormal];
[contenView addSubview:loginBotton];
//注册
UIButton *signBotton = [UIButton buttonWithType:UIButtonTypeSystem];
signBotton.frame = CGRectMake(180, 300, 100, 30);
signBotton.backgroundColor = [UIColor yellowColor];
[signBotton setTitle:@"注册" forState:UIControlStateNormal];
[contenView addSubview:signBotton];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
=================================================
//点击空白回收键盘
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
//获取父视图
UIView *contenView = [self.window viewWithTag:300];
for (int i = 0; i <</span> 5; i ++ ) {
UITextField *field = (UITextField *)[contenView viewWithTag:200 + i];
[field resignFirstResponder];
}
}
//textField 点return回收键盘
- (BOOL)textFieldShouldReturn:(UITextField *)textField;{
[textField resignFirstResponder];
return YES;
}
例子：对上例题优化
建立LTView子类，继承自UIView
LTView.h
#import
@interface LTView : UIView
@property (nonatomic,retain)UILabel *label;
@property (nonatomic,retain)UITextField *field;
@end
LTView.m
@implementation LTView
//释放LT
- (void)dealloc{
self.label = nil;
self.field = nil;
[super dealloc];
}
//重写父类的初始化方法
- (instancetype)initWithFrame:(CGRect)frame{
if (self = [super initWithFrame:frame]) {
[self p_setup]; //调用封装
}
return self;
}
//封装成一个方法建议用_label，因为用seif.容易和后面的CGRectMake（self.）混淆
- (void)p_setup{
_label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, self.frame.size.width / 2,self.frame.size.height)];
// _label.backgroundColor = [UIColor blueColor];
[self addSubview:_label];
[_label release];
_field = [[UITextField alloc]initWithFrame:CGRectMake(self.frame.size.width / 2, 0,self.frame.size.width / 2, self.frame.size.height)];
// _field.backgroundColor = [UIColor cyanColor];
[self addSubview:_field];
[_field release];
}
UIView *contenView = [[UIView alloc]initWithFrame:[UIScreen mainScreen].bounds];
contenView.tag = 300;
contenView.backgroundColor = [UIColor whiteColor];
[self.window addSubview:contenView];
[contenView release];
//=============================================
AppDelegate.m
记得引入子类头文件 #import "LTView.h"
//数据源：是用来提供数据
//label上的数据
NSArray *texts = @[@"用户名",@"密码",@"确认密码",@"手机号",@"邮箱"];
//textField上的数据
NSArray *placegolds = @[@"请输入用户名",@"请输入密码",@"请再次确认密码",@"请输入手机号",@"请输入邮箱"];
// {(20,40 + 50*i),(280,30)}
//我们管我们自己定义的控件叫做自定义复合视图，因为系统没有为我们提供需要的控件；
for (int i = 0; i <</span> 5; i ++) {
LTView *view = [[LTView alloc]initWithFrame:CGRectMake(20, 40 + 50 * i, 280, 30)];
//给label赋值
view.label.text =texts[i];
//给field赋值
view.field.placeholder = placegolds[i];
//设置代理
view.field.delegate = self;
//给view设置tag值
view.tag = 200 + i;
view.backgroundColor = [UIColor whiteColor];
[contenView addSubview:view];
[view release];
} //登录
UIButton *loginBotton = [UIButton buttonWithType:UIButtonTypeSystem];
loginBotton.frame = CGRectMake(40, 300, 100, 30);
loginBotton.backgroundColor = [UIColor yellowColor];
[loginBotton setTitle:@"登录" forState:UIControlStateNormal];
[contenView addSubview:loginBotton];
//注册
UIButton *signBotton = [UIButton buttonWithType:UIButtonTypeSystem];
signBotton.frame = CGRectMake(180, 300, 100, 30);
signBotton.backgroundColor = [UIColor yellowColor];
[signBotton setTitle:@"注册" forState:UIControlStateNormal];
[contenView addSubview:signBotton];
————————————————————————————
//重写点击空白回收键盘
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
// //获取父视图
UIView *contenView = [self.window viewWithTag:300];
for (int i = 0; i <</span> 5; i ++) {
//此时contentView 上的控件是我们自定义出来的LTView，所以根据Tag取出控件应该转换为LTView类型
LTView *view = (LTView *)[contenView viewWithTag:200 + i];
[view.field resignFirstResponder];
}
}
—————————————————————————————
//点击return收回键盘
- (BOOL)textFieldShouldReturn:(UITextField *)textField;{
[textField resignFirstResponder];
return YES;
}
回到本节知识汇总：http://blog.sina.com.cn/s/blog_814ecfa90102vvb0.html
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