纯代码-QQ登陆练习

//
// LWTViewController.m
//  纯代码-QQ登陆
//
//  Created by apple on 14-5-21.
//  Copyright (c) 2014年 lwt. All rights reserved.
//

#import "LWTViewController.h"

#define KLabelX 40
#define KTextFieldX 100

#define KLabelWidth 40
#define KTextFieldWidth 150
#define kButtonWidth 60

#define KHeight 25


@interface LWTViewController ()

// qq号码和密码属性
@property (nonatomic, strong) UITextField *QQNumber;
@property (nonatomic, strong) UITextField *QQPassword;


@end

@implementation LWTViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    // 用户名
    [self createLable:40.0 andText:@"QQ"];
    // 输入框
    self.QQNumber = [self createTextField:40.0 andText:@"请输入QQ"];
    // 数字键盘
    self.QQNumber.keyboardType = UIKeyboardTypeNumberPad;
    
    // 密码
    [self createLable:80.0 andText:@"密码"];
    // 输入框
    self.QQPassword = [self createTextField:80.0 andText:@"请输入密码"];
    // 密码隐文
    self.QQPassword.secureTextEntry = YES;
    
    // 创建登陆按钮
    CGFloat btnX = (self.view.frame.size.width - kButtonWidth) / 2;
    UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(btnX, 120, kButtonWidth, KHeight)];
    // 设置文本
    [btn setTitle:@"登陆" forState:UIControlStateNormal];
    [btn setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
    
    // 设置背景颜色
    [btn setBackgroundColor:[UIColor whiteColor]];
    
    // 设置点击按钮事件
    [btn addTarget:self action:@selector(btnClick) forControlEvents:UIControlEventTouchUpInside];
    
    [self.view addSubview:btn];
    
}

/** 创建UILabel */
- (void)createLable:(CGFloat)y andText:(NSString *)text
{
    // 创建UILabel
    UILabel *label = [[UILabel alloc] init];
    // 位置
    label.frame = CGRectMake( KLabelX, y, KLabelWidth, KHeight);
    // 文本
    label.text = text;
    // 设置居中
    label.textAlignment = NSTextAlignmentCenter;
    
    [self.view addSubview:label];
}

/** 创建UITextField */
- (UITextField *)createTextField : (CGFloat)y andText:(NSString *)placeholder
{
    // 创建UITextField
    UITextField *textField = [[UITextField alloc] init];
    // 位置
    textField.frame = CGRectMake(KTextFieldX, y, KTextFieldWidth, KHeight);
    // 边框
    textField.borderStyle = UITextBorderStyleRoundedRect;
    // 默认文本
    textField.placeholder = placeholder;
    
    [self.view addSubview:textField];
    
    return textField;
}

- (void)btnClick
{
    NSLog(@"QQ ：%@,密码 ：%@", self.QQNumber.text, self.QQPassword.text);
    [self.view endEditing:YES];
}

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

@end