UIView UILabel UITextFiled UIButton UIControlView UIAlertView

##UIResponder

- (BOOL)resignFirstResponder;

###UIView

- (instancetype)initWithFrame:(CGRect)frame; 创建

backgroundColor 底色 [UIColor clearColor]

alpha 透明度

tag 查找值

###UILabel 

UIView的子类

label.textAlignment =NSTextAlignmentCenter;  //居中

label.font = [UIFontsystemFontOfSize:26];    //字号

center 中心 

frame 框架

numberOfLines 行数

layer.borderWidth 边框宽度

layer.cornerRadius 圆角

(BOOL)layer.masksToBounds 去掉超出边框范围的

    // 断行模式

    label1.lineBreakMode = NSLineBreakByTruncatingTail;

    label1.shadowColor = [UIColor blackColor];

    label1.shadowOffset = CGSizeMake(2, 1);

###UIButton

tintColor 标题颜色

- (NSString *)titleForState:(UIControlState)state; // 名字

+ (id)buttonWithType:(UIButtonType)buttonType;     // 便利构造器

- (void)addTarget:(id)target action:(SEL)action forControlEvents:(UIControlEvents)controlEvents; // 继承自UIControl

###UITextField

    textfield.text =@"你傻啊";// 内容

    textfield.textColor = [UIColorbrownColor]; // 颜色

    textfield.placeholder =@"请输入账号";//预设定

    textfield.keyboardType =  UIKeyboardTypeNumberPad;

    textfield.returnKeyType = UIReturnKeySearch;

    textfield.clearsOnBeginEditing =YES; // 编译开始前清空

    textfield.clearButtonMode =UITextFieldViewModeAlways;//清除键

    textfield.inputAccessoryView = view;// 广告

    

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

    NSLog(@"测试按钮");

    [textField resignFirstResponder];

    return YES;

}

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

    NSLog(@"测试清除按钮");

    [textField resignFirstResponder];

    return YES;

}

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

   if (textField.frame.origin.y >HEIGHT / 2) {

       CGFloat height = textField.center.y -HEIGHT / 2;

       self.view.center =CGPointMake(self.view.center.x,self.view.center.y  - height);

       NSLog(@"%g", textField.frame.origin.y);

    }

    return YES;

}

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

   if (textField.frame.origin.y >HEIGHT / 2) {

       CGFloat height = textField.center.y -HEIGHT / 2;

       self.view.center =CGPointMake(self.view.center.x,self.view.center.y + height);

       NSLog(@"%g", textField.frame.origin.y);

    }

    return YES;

}

###UIControlView

主页

 -------------------------------------------------------------------  

    RootViewController *rootVC = [[RootViewControlleralloc] init];

    self.window.rootViewController = rootVC;

    [rootVCrelease];

 -------------------------------------------------------------------

第二页

----------------------------------------------------------------------------

    SecondViewController *senondVC = [[SecondViewController alloc] init];

    [senondVC setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];

    [self presentViewController:senondVC animated:YES completion:^{}];

    [senondVC release];

 --------------------------------------------------------------------------

回主页

 -------------------------------------------------------------------

    [selfdismissViewControllerAnimated:YEScompletion:^{}];

 -------------------------------------------------------------------

###UIAlertView

UIAlertView *warning = [[UIAlertViewalloc] initWithTitle:@"warning"message:@"账号密码错误"delegate:selfcancelButtonTitle:@"重新输入"otherButtonTitles:@"找回密码",nil]; // 创建

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex; //点的谁,点的哪个

- (void)show;

###UITimer

 UITimer *time = [NSTimertimerWithTimeInterval:0.2target:selfselector:@selector(changeTimeAtTime)userInfo:nilrepeats:YES];//建

[[NSRunLoopcurrentRunLoop] addTimer:timeforMode:NSDefaultRunLoopMode];// 加入进程

[self.timesetFireDate:[NSDatedistantFuture]];//暂停

[self.timesetFireDate:[NSDatedate]];启动