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;
 11int 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 52for (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];
100101102103//    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];
108109110//    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];
115116117118119120//    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];
124125126//    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}
131132133//UiTextField代理事件134 - (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{
135    [nameImage startAnimating];
136return YES;
137}
138139140141//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++;
144if (i%2==0) {
145         password.secureTextEntry = NO;
146     }if (i%2==1) {
147         password.secureTextEntry = YES;
148    }
149150}
151152153//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}
158159160161 - (void)didReceiveMemoryWarning {
162    [super didReceiveMemoryWarning];
163// Dispose of any resources that can be recreated.164}
165166@end