IOS开发－UI学习－UITextField的具体属性及用法

  1 //制作登陆界面
  2 #import "ViewController.h"
  3 
  4 @interface ViewController (){
  5     
  6 //定义全局变量（控件）
  7     UITextField *username;
  8     UITextField *password;
  9     UIButton *resignbutton;
 10     UIButton *loginbutton;
 11     int i;
 12     NSMutableArray *imagearray;
 13     UIImageView *nameImage;
 14 }
 15 @end
 16 
 17 @implementation ViewController
 18 
 19 - (void)viewDidLoad {
 20     [super viewDidLoad];
 21     
 22 //    获取屏幕分辨率
 23     CGRect rect = [[UIScreen mainScreen]bounds];
 24     CGFloat screenw = rect.size.width;
 25     CGFloat screenh = rect.size.height;
 26     
 27 //    初始化密码掩码标志位
 28     i=0;
 29     
 30 // 用户名输入框
 31 //    创建
 32     username = [[UITextField alloc]initWithFrame:CGRectMake(3*screenw/8, 3*screenh/20, 4*screenw/8, screenh/20)];
 33 //    设置边框
 34     [username setBorderStyle:UITextBorderStyleRoundedRect];
 35 //    设置水印提示
 36     username.placeholder = @"请输入用户名：";
 37 //    设置自动联想输入
 38     username.autocorrectionType = UITextAutocorrectionTypeYes;
 39 //    自动联想输入方式设置为根据单词首字母联想
 40     username.autocapitalizationType = UITextAutocapitalizationTypeWords;
 41 //    键盘右下角按键的类型
 42     username.returnKeyType = UIReturnKeyDone;
 43 //    右侧图片设置
 44 //  nameImage.image = [UIImage imageNamed:@"cat_eat0000.jpg"];
 45 //    设置代理
 46     username.delegate = self;
 47 //    设置右侧清除按钮模式
 48     username.clearButtonMode = UITextFieldViewModeWhileEditing;
 49 //    初始化动画素材存放数组
 50     imagearray = [[NSMutableArray alloc]initWithCapacity:40];
 51 //    通过循环为数组装载图片
 52     for (int x=0; x<40; x++) {
 53         [imagearray addObject:[UIImage imageNamed:[NSString stringWithFormat:@"cat_eat00%.2d.jpg",x]]];
 54     }
 55 //    初始化图片位置，大小，由于图片限制在输入框右侧，所用坐标设置为0
 56     nameImage = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 40  , 40)];
 57 //    设置输入框右侧动画图片来源为图片数组
 58     nameImage.animationImages = imagearray;
 59 //    设置动画播放持续时长
 60     nameImage.animationDuration = 2;
 61 //    设置动画重复次数为无限循环
 62     nameImage.animationRepeatCount = 0;
 63     
 64 //    设置输入框右侧图片
 65     username.rightView = nameImage;
 66 //    设置右侧图片模式
 67     password.rightViewMode = UITextFieldViewModeWhileEditing;
 68 //    在启动程序后获取焦点
 69     [username becomeFirstResponder];
 70 //    加载到View上
 71     [self.view addSubview:username];
 72     
 73     
 74 //    密码输入框
 75     password = [[UITextField alloc]initWithFrame:CGRectMake(3*screenw/8, 5*screenh/20, 4*screenw/8, screenh/20)];
 76     [password setBorderStyle:UITextBorderStyleRoundedRect];
 77 //    设置输入提示水印文字
 78     password.placeholder = [NSString stringWithFormat:@"请输入密码："];
 79 //    设置输入掩码
 80     password.secureTextEntry = YES;
 81     username.returnKeyType = UIReturnKeyDone;
 82 //    设置字体和字号
 83     password.font = [UIFont fontWithName:@"Arial" size:20];
 84     
 85     UIImageView *rightImage = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 25, 15)];
 86     rightImage.image = [UIImage imageNamed:@"1"];
 87     password.rightView = rightImage;
 88     password.rightViewMode = UITextFieldViewModeWhileEditing;
 89     [self.view addSubview:password];
 90     
 91     
 92 //    设置密码输入框密码掩码开关的按钮
 93     UIButton *eyebutton = [[UIButton alloc]initWithFrame:CGRectMake(7*screenw/8-1*screenw/16, 5*screenh/20+5, 1*screenw/16, screenh/30)];
 94     eyebutton.backgroundColor = [UIColor whiteColor];
 95 //    eyebutton.alpha = 0;
 96         eyebutton.alpha = 0.1;
 97     
 98     [eyebutton addTarget:self action:@selector(haha:) forControlEvents:UIControlEventTouchUpInside];
 99     [self.view addSubview:eyebutton];
100     
101     
102     
103 //    注册按钮
104     resignbutton = [[UIButton alloc]initWithFrame:CGRectMake(1*screenw/8, 7*screenh/20, 5*screenw/16, screenh/20)];
105     [resignbutton setTitle:@"注册" forState:UIControlStateNormal];
106     resignbutton.backgroundColor = [UIColor colorWithRed:0.461 green:1.000 blue:0.856 alpha:1.000];
107     [self.view addSubview:resignbutton];
108     
109     
110 //    登陆按钮
111     loginbutton = [[UIButton alloc]initWithFrame:CGRectMake(9*screenw/16, 7*screenh/20, 5*screenw/16, screenh/20)];
112     [loginbutton setTitle:@"登陆" forState:UIControlStateNormal];
113     loginbutton.backgroundColor = [UIColor colorWithRed:0.461 green:1.000 blue:0.856 alpha:1.000];
114     [self.view addSubview:loginbutton];
115     
116     
117     
118     
119     
120 //    用户名提示
121     UILabel *usernamelabel =[[UILabel alloc]initWithFrame:CGRectMake(1*screenw/8, 3*screenh/20, 2*screenw/8, screenh/20)];
122     usernamelabel.text = @"用户名：";
123     [self.view addSubview:usernamelabel];
124     
125     
126 //    密码输入提示
127     UILabel *passwordlabel =[[UILabel alloc]initWithFrame:CGRectMake(1*screenw/8, 5*screenh/20, 2*screenw/8, screenh/20)];
128     passwordlabel.text = @"密码：";
129     [self.view addSubview:passwordlabel];
130 }
131 
132 
133 //UiTextField代理事件
134 - (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{
135     [nameImage startAnimating];
136     return YES;
137 }
138 
139 
140 
141 //设置密码输入框密码掩码开关的按钮响应事件
142 -(void)haha:(id)sender{
143     i++;
144     if (i%2==0) {
145         password.secureTextEntry = NO;
146     }if (i%2==1) {
147         password.secureTextEntry = YES;
148     }
149     
150 }
151 
152 
153 //输入完后点击输入框空白处让键盘消失
154 -(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
155     [username resignFirstResponder];
156     [password resignFirstResponder];
157 }
158 
159 
160 
161 - (void)didReceiveMemoryWarning {
162     [super didReceiveMemoryWarning];
163     // Dispose of any resources that can be recreated.
164 }
165 
166 @end