UITextField的简单使用

关于UITextField的简单实用和注释

 1 - (void)viewDidLoad {
 2     [super viewDidLoad];
 3
 4 //    self.view.backgroundColor = [UIColor grayColor];
 5
 6     //输入框默认为全透明
 7     //不管frame多大，默认输入框高度为30
 8     UITextField *textfield1 = [[UITextField alloc] initWithFrame:CGRectMake(100, 100, 200, 30)];
 9     //设置边框类型，默认为无边框
10     textfield1.borderStyle = UITextBorderStyleLine;
11     //设置背景颜色，默认为透明色
12     textfield1.backgroundColor = [UIColor orangeColor];
13
14     [self.view addSubview:textfield1];
15
16
17     //设置居中
18     textfield1.textAlignment = NSTextAlignmentCenter;
19     //设置密码显示形式
20 //    textfield1.secureTextEntry = YES;
21
22     //设置键盘类型
23     textfield1.keyboardType = UIKeyboardTypeEmailAddress;
24
25     //设置清除按钮合适显示
26     textfield1.clearButtonMode = UITextFieldViewModeWhileEditing;
27
28     //关闭首字母大写
29     textfield1.autocapitalizationType = UITextAutocapitalizationTypeNone;
30     //输入框为空时的提示文字
31     textfield1.placeholder = @"请输入您的帐号";
32
33     textfield1.text = @"hahha";
34     //设置文本字体
35     textfield1.font = [UIFont systemFontOfSize:11];
36     //设置代理
37     textfield1.delegate = self;
38 //    self.ibTextField.delegate = self;
39
40     textfield1.tag = 100;
41 //    self.ibTextField.tag = 200;
42     /*
43      使用代理方法：
44      1.遵从协议
45      2.设置代理
46      3.实现协议方法
47
48      */
49
50
51 }
52
53 #define mark  textFeildDelegate
54 //开始编辑
55 - (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{
56
57     NSLog(@"j将要开始编辑,%ld",textField.tag);
58     //决定你的textField是否可以编辑
59     return YES;
60 }
61 - (void)textFieldDidBeginEditing:(UITextField *)textField{
62     NSLog(@"开始编辑");
63
64 }
65 - (BOOL)textFieldShouldEndEditing:(UITextField *)textField{
66
67     NSLog(@"将要结束编辑");
68     return YES;
69
70 }
71
72 - (void)textFieldDidEndEditing:(UITextField *)textField{
73
74     NSLog(@"结束编辑");
75 }
76 //点击清除按钮的时候调用
77 - (BOOL)textFieldShouldClear:(UITextField *)textField{
78     NSLog(@"clear");
79     return YES;
80 }
81 //点击键盘return时调用
82 - (BOOL)textFieldShouldReturn:(UITextField *)textField{
83     NSLog(@"return");
84     //取消第一响应者，收起键盘
85     [textField resignFirstResponder];
86     return YES;
87 }