[iOS基础控件

 

A.storyboard 控件版

1.label

2.textfield

     a.Keyboard Type

          账号：Number Pad

          密码：Number and Punctuation

     b.Placeholder：提示文字

     c.Clear Button: Appears with editing 清除按钮

     d.Secure Text Entry：密码格式输入

3.button

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UITextField *qqField;
@property (weak, nonatomic) IBOutlet UITextField *pwdField;

- (IBAction)login;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)login {
    NSLog(@"%@ - %@", self.qqField.text, self.pwdField.text);
}
@end

 

B.通过代码创建按钮

@interface ViewController ()

- (void) addLabel;
- (void) addTextField;
- (void) addLoginButton;
- (void) login;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
   
    [self addLabel];
    [self addTextField];
    [self addLoginButton];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void) addLabel {
    UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 45, self.view.frame.size.width, 21)];
    [titleLabel setTextAlignment:NSTextAlignmentCenter];
    titleLabel.text = @"QQ登陆界面2";
    [self.view addSubview:titleLabel];
   
    UILabel *qqLabel = [[UILabel alloc] initWithFrame:CGRectMake(60, 91, 26, 21)];
    qqLabel.text = @"QQ";
    [self.view addSubview:qqLabel];
   
    UILabel *pwdLabel = [[UILabel alloc] initWithFrame:CGRectMake(60, 131, 34, 21)];
    pwdLabel.text = @"密码";
    [self.view addSubview:pwdLabel];
}

- (void) addTextField {
    UITextField *qqField = [[UITextField alloc] initWithFrame:CGRectMake(109, 87, 151, 30)];
    qqField.placeholder = @"请输入QQ账号";
    [qqField setClearButtonMode:UITextFieldViewModeWhileEditing];
    [qqField setKeyboardType:UIKeyboardTypeNumberPad];
    [qqField setBorderStyle:UITextBorderStyleRoundedRect];
    [qqField setTag:1];
    [self.view addSubview:qqField];
   
    UITextField *pwdField = [[UITextField alloc] initWithFrame:CGRectMake(109, 127, 151, 30)];
    pwdField.placeholder = @"请输入QQ密码";
    [pwdField setSecureTextEntry:YES];
    [pwdField setKeyboardType:UIKeyboardTypeNumbersAndPunctuation];
    [pwdField setClearButtonMode:UITextFieldViewModeWhileEditing];
    [pwdField setBorderStyle:UITextBorderStyleRoundedRect];
    [pwdField setTag:2];
    [self.view addSubview:pwdField];
}

- (void) addLoginButton {
    // 注意如果使用UIButtonTypeCustom，默认背景色和titleColor都是是白色，显示不出来
    UIButton *loginButton = [UIButton buttonWithType:UIButtonTypeSystem];
   
    CGRect loginRect = CGRectMake(145, 177, 30, 30);
    loginButton.frame = loginRect;
    [loginButton setTitle:@"登陆" forState:UIControlStateNormal];
    [loginButton addTarget:self action:@selector(login) forControlEvents:UIControlEventTouchUpInside];
   
    [self.view addSubview:loginButton];
}

#pragma mark - action
- (void) login {
    UITextField *qqField = [self.view viewWithTag:1];
    UITextField *pwdField = [self.view viewWithTag:2];
   
    NSLog(@"登陆---->%@ - %@", qqField.text, pwdField.text);
}
@end