@interface ViewController ()web
@endapp
@implementation ViewController框架
(void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.ide
//三个UILabel
UILabel *nameLabel = [[UILabel alloc]initWithFrame:CGRectMake(10, 60, 80, 37)];
nameLabel.font = [UIFont systemFontOfSize:15];
nameLabel.text = @"用 户 名:";
nameLabel.backgroundColor = [UIColor clearColor];
nameLabel.textAlignment = NSTextAlignmentLeft;
nameLabel.numberOfLines = 2; //用于设置UILabel中文本的行数
[self.view addSubview:nameLabel];
[nameLabel release];字体
UILabel *newPasswordLabel = [[UILabel alloc]initWithFrame:CGRectMake(10, 60+40, 80, 37)];
newPasswordLabel.font = [UIFont systemFontOfSize:15];
newPasswordLabel.text = @"密 码：";
newPasswordLabel.backgroundColor = [UIColor clearColor];
newPasswordLabel.textAlignment = NSTextAlignmentLeft;
[self.view addSubview:newPasswordLabel];
[newPasswordLabel release];优化
UILabel *oncePasswordLabel = [[UILabel alloc]initWithFrame:CGRectMake(10, 60+40*2, 80, 37)];
oncePasswordLabel.font = [UIFont systemFontOfSize:15];
oncePasswordLabel.text = @"确认密码:";
oncePasswordLabel.backgroundColor = [UIColor clearColor];
oncePasswordLabel.textAlignment = NSTextAlignmentLeft;
[self.view addSubview:oncePasswordLabel];
[oncePasswordLabel release];指针
//三个输入框
UITextField *nameTextField = [[UITextField alloc]initWithFrame:CGRectMake(90, 60, 210, 30)];
nameTextField.placeholder = @"请输入用户名";
nameTextField.tag = 1;
[nameTextField setSecureTextEntry:NO];
nameTextField.font = [UIFont systemFontOfSize:14];
nameTextField.delegate = self;
nameTextField.backgroundColor = [UIColor clearColor];
nameTextField.borderStyle = UITextBorderStyleRoundedRect;
[self.view addSubview:nameTextField];
[nameTextField release];code
UITextField *passwordTextField = [[UITextField alloc]initWithFrame:CGRectMake(90, 60+40, 210, 30)];
passwordTextField.placeholder = @"至少6位数字";
passwordTextField.tag = 2;
[passwordTextField setSecureTextEntry:YES];
passwordTextField.font = [UIFont systemFontOfSize:14];
passwordTextField.delegate = self;
passwordTextField.backgroundColor = [UIColor clearColor];
passwordTextField.borderStyle = UITextBorderStyleRoundedRect;
passwordTextField.keyboardType = UIKeyboardTypeNumberPad;
[self.view addSubview:passwordTextField];
[passwordTextField release];orm
UITextField *onceNewPasswordTextField = [[UITextField alloc]initWithFrame:CGRectMake(90, 60+40*2, 210, 30)];
onceNewPasswordTextField.placeholder = @"请再次输入密码";
onceNewPasswordTextField.tag = 3;
onceNewPasswordTextField.font = [UIFont systemFontOfSize:14];
[onceNewPasswordTextField setSecureTextEntry:YES];
onceNewPasswordTextField.delegate = self;
onceNewPasswordTextField.backgroundColor = [UIColor clearColor];
onceNewPasswordTextField.borderStyle = UITextBorderStyleRoundedRect;
onceNewPasswordTextField.keyboardType = UIKeyboardTypeNumberPad;
[self.view addSubview:onceNewPasswordTextField];
[onceNewPasswordTextField release];继承
UIButton confirmButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
confirmButton.frame = CGRectMake(110, 60+403+20, 100, 37);
[confirmButton setTitle:@"肯定" forState:UIControlStateNormal]; //正常情况下button显示的标题
[confirmButton setTitle:@"肯定" forState:UIControlStateHighlighted]; //高亮显示时button的标题
confirmButton.backgroundColor = [UIColor redColor];
[confirmButton addTarget:self action:@selector(confirm:) forControlEvents:UIControlEventTouchUpInside];//button被按下又抬起后发生的事件
//@selector能够理解为"选择子"，selector是一个指针变量，相似于sender。 这里是将method的方法指定给新建的这个confirmButton
[self.view addSubview:confirmButton];
}
//收回键盘
(void)touchesBegan:(NSSet )touches withEvent:(UIEvent )event
{
for (int i = 0; i<4; i++) {
UITextField textField = (UITextField)[self.view viewWithTag:1+i];
[textField resignFirstResponder];
}
}
(void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
二.UILabel
UILabel继承了UIView，它能够设置UIView所支持的属性。
UILabel *label1 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 20.0, 200.0, 50.0)]; //设置Label的位置和大小
//设置显示文字
label1.text = @"用户名";
//设置字体:粗体，正常的是 SystemFontOfSize
label1.font = [UIFont boldSystemFontOfSize:20];
//设置文字颜色
label1.textColor = [UIColor orangeColor];
//设置文字位置
label1.textAlignment = UITextAlignmentRight;
label2.textAlignment = UITextAlignmentCenter;
//设置字体大小适应label宽度
label4.adjustsFontSizeToFitWidth = YES;
//设置label的行数
label5.numberOfLines = 2;
UIlabel.backgroudColor=[UIColor clearColor]; //能够去掉背景色
//设置高亮
label6.highlighted = YES;
label6.highlightedTextColor = [UIColor orangeColor];
//设置阴影
label7.shadowColor = [UIColor redColor];
label7.shadowOffset = CGSizeMake(1.0,1.0);
//设置是否能与用户进行交互
label7.userInteractionEnabled = YES;
//设置label中的文字是否可变，默认值是YES
label3.enabled = NO;
//设置文字过长时的显示格式
label3.lineBreakMode = UILineBreakModeMiddleTruncation;//截去中间
// typedef enum {
// UILineBreakModeWordWrap = 0,
// UILineBreakModeCharacterWrap,
// UILineBreakModeClip,//截去多余部分
// UILineBreakModeHeadTruncation,//截去头部
// UILineBreakModeTailTruncation,//截去尾部
// UILineBreakModeMiddleTruncation,//截去中间
// } UILineBreakMode;
//若是adjustsFontSizeToFitWidth属性设置为YES，这个属性就来控制文本基线的行为
label4.baselineAdjustment = UIBaselineAdjustmentNone;
// typedef enum {
// UIBaselineAdjustmentAlignBaselines,
// UIBaselineAdjustmentAlignCenters,
// UIBaselineAdjustmentNone,
// } UIBaselineAdjustment;
*********在处理密码等隐私类的信息时，可能须要将输入的信息隐藏一下。
//每输入一个字符就变成点 ,用语密码输入
[passwordTextField setSecureTextEntry:YES];
也能够设置文本框关联的键盘，以下：
复制代码
//设置键盘的样式
text.keyboardType = UIKeyboardTypeNumberPad;
typedef enum {
UIKeyboardTypeDefault, //默认键盘，支持全部字符
UIKeyboardTypeASCIICapable, //支持ASCII的默认键盘
UIKeyboardTypeNumbersAndPunctuation, //标准电话键盘，支持＋＊＃字符
UIKeyboardTypeURL, //URL键盘，支持.com按钮 只支持URL字符
UIKeyboardTypeNumberPad, //数字键盘
UIKeyboardTypePhonePad, //电话键盘
UIKeyboardTypeNamePhonePad, //电话键盘，也支持输入人名
UIKeyboardTypeEmailAddress, //用于输入电子 邮件地址的键盘
UIKeyboardTypeDecimalPad, //数字键盘 有数字和小数点
UIKeyboardTypeTwitter, //优化的键盘，方便输入@、#字符
UIKeyboardTypeAlphabet = UIKeyboardTypeASCIICapable,
} UIKeyboardType;
有时须要限制输入文本的长度，这类操做也很是广泛和重要。
//限制输入文本的长度
UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
// 可以定义的button类型有如下6种，
// typedef enum {
// UIButtonTypeCustom = 0, 自定义风格
// UIButtonTypeRoundedRect, 圆角矩形
// UIButtonTypeDetailDisclosure, 蓝色小箭头按钮，主要作详细说明用
// UIButtonTypeInfoLight, 亮色感叹号
// UIButtonTypeInfoDark, 暗色感叹号
// UIButtonTypeContactAdd, 十字加号按钮
// } UIButtonType;
//给定button在view上的位置
button1.frame = CGRectMake(20, 20, 280, 20);
//button背景色
button1.backgroundColor = [UIColor clearColor];
//设置button填充图片
//[button1 setImage:[UIImage imageNamed:@"btng.png"] forState:UIControlStateNormal];
//设置button标题
[button1 setTitle:@"点击" forState:UIControlStateNormal];
/* forState: 这个参数的做用是定义按钮的文字或图片在何种状态下才会显现*/
//如下是几种状态
// enum {
// UIControlStateNormal = 0, 常规状态显现
// UIControlStateHighlighted = 1 << 0, 高亮状态显现
// UIControlStateDisabled = 1 << 1, 禁用的状态才会显现
// UIControlStateSelected = 1 << 2, 选中状态
// UIControlStateApplication = 0x00FF0000, 当应用程序标志时
// UIControlStateReserved = 0xFF000000 为内部框架预留，能够无论他
// };
/*
* 默认状况下，当按钮高亮的状况下，图像的颜色会被画深一点，若是这下面的这个属性设置为no，
* 那么能够去掉这个功能
*/
button1.adjustsImageWhenHighlighted = NO;
/*跟上面的状况同样，默认状况下，当按钮禁用的时候，图像会被画得深一点，设置NO能够取消设置*/
button1.adjustsImageWhenDisabled = NO;
/* 下面的这个属性设置为yes的状态下，按钮按下会发光*/
button1.showsTouchWhenHighlighted = YES;
/* 给button添加事件，事件有不少种，我会单独开一篇博文介绍它们，下面这个时间的意思是
按下按钮，而且手指离开屏幕的时候触发这个事件，跟web中的click事件同样。
触发了这个事件之后，执行butClick:这个方法，addTarget:self 的意思是说，这个方法在本类中
也能够传入其余类的指针*/
[button1 addTarget:self action:@selector(butClick:) forControlEvents:UIControlEventTouchUpInside];
//显示控件
[self.view addSubview:button1];
单独说明一下：
UIButton confirmButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
confirmButton.frame = CGRectMake(110, 60+403+20, 100, 37);
[confirmButton setTitle:@"肯定" forState:UIControlStateNormal]; //正常情况下button显示的标题
[confirmButton setTitle:@"肯定" forState:UIControlStateHighlighted]; //高亮显示时button的标题
confirmButton.backgroundColor = [UIColor redColor];
[confirmButton addTarget:self action:@selector(confirm:) forControlEvents:UIControlEventTouchUpInside];//button被按下又抬起后发生的事件
//@selector能够理解为"选择子"，selector是一个指针变量，相似于sender。 这里是将method的方法指定给新建的这个confirmButton
[self.view addSubview:confirmButton];
若要设置UIButton的背景图片时：
UIButton confirmButton = [UIButton buttonWithType:UIButtonTypeCustom]; confirmButton.frame = CGRectMake(10, 60, 100, 40); UIImage nextStepImage = [UIImage imageNamed:@"app.png"]; UIImage *nextStepDownImage = [UIImage imageNamed:@"app.png"]; nextStepImage = [nextStepImage resizableImageWithCapInsets:UIEdgeInsetsMake(8, 8, 8, 8)]; nextStepDownImage = [nextStepDownImage resizableImageWithCapInsets:UIEdgeInsetsMake(8, 8, 8, 8)]; [confirmButton setBackgroundImage:nextStepImage forState:UIControlStateNormal]; [confirmButton setBackgroundImage:nextStepDownImage forState:UIControlStateHighlighted]; [confirmButton setTitle:@"肯定" forState:UIControlStateNormal]; [confirmButton addTarget:self action:@selector(confirm:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:confirmButton];