纯代码-QQ登陆练习

  1 //
  2 // LWTViewController.m
  3 //  纯代码-QQ登陆
  4 //
  5 //  Created by apple on 14-5-21.
  6 //  Copyright (c) 2014年 lwt. All rights reserved.
  7 //
  8 
  9 #import "LWTViewController.h"
 10 
 11 #define KLabelX 40
 12 #define KTextFieldX 100
 13 
 14 #define KLabelWidth 40
 15 #define KTextFieldWidth 150
 16 #define kButtonWidth 60
 17 
 18 #define KHeight 25
 19 
 20 
 21 @interface LWTViewController ()
 22 
 23 // qq号码和密码属性
 24 @property (nonatomic, strong) UITextField *QQNumber;
 25 @property (nonatomic, strong) UITextField *QQPassword;
 26 
 27 
 28 @end
 29 
 30 @implementation LWTViewController
 31 
 32 - (void)viewDidLoad
 33 {
 34     [super viewDidLoad];
 35     // Do any additional setup after loading the view, typically from a nib.
 36     
 37     // 用户名
 38     [self createLable:40.0 andText:@"QQ"];
 39     // 输入框
 40     self.QQNumber = [self createTextField:40.0 andText:@"请输入QQ"];
 41     // 数字键盘
 42     self.QQNumber.keyboardType = UIKeyboardTypeNumberPad;
 43     
 44     // 密码
 45     [self createLable:80.0 andText:@"密码"];
 46     // 输入框
 47     self.QQPassword = [self createTextField:80.0 andText:@"请输入密码"];
 48     // 密码隐文
 49     self.QQPassword.secureTextEntry = YES;
 50     
 51     // 创建登陆按钮
 52     CGFloat btnX = (self.view.frame.size.width - kButtonWidth) / 2;
 53     UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(btnX, 120, kButtonWidth, KHeight)];
 54     // 设置文本
 55     [btn setTitle:@"登陆" forState:UIControlStateNormal];
 56     [btn setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
 57     
 58     // 设置背景颜色
 59     [btn setBackgroundColor:[UIColor whiteColor]];
 60     
 61     // 设置点击按钮事件
 62     [btn addTarget:self action:@selector(btnClick) forControlEvents:UIControlEventTouchUpInside];
 63     
 64     [self.view addSubview:btn];
 65     
 66 }
 67 
 68 /** 创建UILabel */
 69 - (void)createLable:(CGFloat)y andText:(NSString *)text
 70 {
 71     // 创建UILabel
 72     UILabel *label = [[UILabel alloc] init];
 73     // 位置
 74     label.frame = CGRectMake( KLabelX, y, KLabelWidth, KHeight);
 75     // 文本
 76     label.text = text;
 77     // 设置居中
 78     label.textAlignment = NSTextAlignmentCenter;
 79     
 80     [self.view addSubview:label];
 81 }
 82 
 83 /** 创建UITextField */
 84 - (UITextField *)createTextField : (CGFloat)y andText:(NSString *)placeholder
 85 {
 86     // 创建UITextField
 87     UITextField *textField = [[UITextField alloc] init];
 88     // 位置
 89     textField.frame = CGRectMake(KTextFieldX, y, KTextFieldWidth, KHeight);
 90     // 边框
 91     textField.borderStyle = UITextBorderStyleRoundedRect;
 92     // 默认文本
 93     textField.placeholder = placeholder;
 94     
 95     [self.view addSubview:textField];
 96     
 97     return textField;
 98 }
 99 
100 - (void)btnClick
101 {
102     NSLog(@"QQ ：%@,密码 ：%@", self.QQNumber.text, self.QQPassword.text);
103     [self.view endEditing:YES];
104 }
105 
106 - (void)didReceiveMemoryWarning
107 {
108     [super didReceiveMemoryWarning];
109     // Dispose of any resources that can be recreated.
110 }
111 
112 @end