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//初始化textfield并设置位置及大小

UITextField *text = [[UITextField alloc]initWithFrame:CGRectMake(20, 20, 130, 30)]

//设置边框样式,只有设置了才会显示边框样式 

text.borderStyle = UITextBorderStyleRoundedRect;

 typedef enum {

UITextBorderStyleNone,

UITextBorderStyleLine,

UITextBorderStyleBezel,

UITextBorderStyleRoundedRect

} UITextBorderStyle;

//设置输入框的背景颜色,此时设置为白色如果使用了自定义的背景图片边框会被忽略掉 

  text.backgroundColor = [UIColor whiteColor];

//设置背景

text.background = [UIImage imageNamed:@"dd.png"];//UITextField 的背景,注意只有UITextBorderStyleNone的时候改属性有效

//设置背景

text.disabledBackground = [UIImage imageNamed:@"cc.png"];

//当输入框没有内容时,水印提示提示内容为password

text.placeholder = @"password";

//设置输入框内容的字体样式和大小

text.font = [UIFont fontWithName:@"Arial" size:20.0f];

//设置字体颜色

text.textColor = [UIColor redColor];

//输入框中是否有个叉号,在什么时候显示,用于一次性删除输入框中的内容

text.clearButtonMode = UITextFieldViewModeAlways;

typedef enum {

UITextFieldViewModeNever, 重不出现

UITextFieldViewModeWhileEditing,编辑时出现

UITextFieldViewModeUnlessEditing, 除了编辑外都出现

UITextFieldViewModeAlways  一直出现

} UITextFieldViewMode;

//输入框中一开始就有的文字

text.text = @"一开始就在输入框的文字";

//每输入一个字符就变成点用语密码输入

text.secureTextEntry = YES;

//是否纠错

text.autocorrectionType = UITextAutocorrectionTypeNo;

typedef enum {

UITextAutocorrectionTypeDefault,默认

UITextAutocorrectionTypeNo,  不自动纠错

UITextAutocorrectionTypeYes, 自动纠错

} UITextAutocorrectionType;

//再次编辑就清空

text.clearsOnBeginEditing = YES;

//内容对齐方式

text.textAlignment = UITextAlignmentLeft;

//内容的垂直对齐方式 UITextField继承自UIControl,此类中有一个属性contentVerticalAlignment

text.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;

//设置为YES时文本会自动缩小以适应文本窗口大小.默认是保持原来大小,而让长文本滚动 

textFied.adjustsFontSizeToFitWidth = YES;

//设置自动缩小显示的最小字体大小

text.minimumFontSize = 20;

//设置键盘的样式

text.keyboardType = UIKeyboardTypeNumberPad;

typedef enum {

UIKeyboardTypeDefault,  默认键盘,支持所有字符

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;

//首字母是否大写

text.autocapitalizationType = UITextAutocapitalizationTypeNone;

typedef enum {

UITextAutocapitalizationTypeNone,不自动大写

UITextAutocapitalizationTypeWords, 单词首字母大写

UITextAutocapitalizationTypeSentences, 句子的首字母大写

UITextAutocapitalizationTypeAllCharacters,所有字母都大写

} UITextAutocapitalizationType;

//return键变成什么键

text.returnKeyType =UIReturnKeyDone;

typedef enum {

UIReturnKeyDefault,默认灰色按钮,标有Return

UIReturnKeyGo,  标有Go的蓝色按钮

UIReturnKeyGoogle,标有Google的蓝色按钮,用语搜索

UIReturnKeyJoin,标有Join的蓝色按钮

UIReturnKeyNext,标有Next的蓝色按钮

UIReturnKeyRoute,标有Route的蓝色按钮

UIReturnKeySearch,标有Search的蓝色按钮

UIReturnKeySend,标有Send的蓝色按钮

UIReturnKeyYahoo,标有Yahoo的蓝色按钮

UIReturnKeyYahoo,标有Yahoo的蓝色按钮

UIReturnKeyEmergencyCall,紧急呼叫按钮

} UIReturnKeyType;

//键盘外观

textView.keyboardAppearance=UIKeyboardAppearanceDefault;

typedef enum {

UIKeyboardAppearanceDefault,默认外观,浅灰色

UIKeyboardAppearanceAlert,   深灰石墨色

} UIReturnKeyType;

//设置代理用于实现协议

text.delegate = self;

//把textfield加到视图中

[self.window addSubview:text];

//最右侧加图片是以下代码 左侧类似

UIImageView *image=[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"right.png"]];

text.rightView=image;

text.rightViewMode = UITextFieldViewModeAlways;

typedef enum {

UITextFieldViewModeNever,

UITextFieldViewModeWhileEditing,

UITextFieldViewModeUnlessEditing,

UITextFieldViewModeAlways

} UITextFieldViewMode;

//按return键键盘往下收 becomeFirstResponder

类要采用UITextFieldDelegate协议

text.delegate = self; 声明text的代理是我,我会去实现把键盘往下收的方法这个方法在UITextFieldDelegate里所以我们要采用UITextFieldDelegate这个协议

– (BOOL)textFieldShouldReturn:(UITextField *)textField

{

[text resignFirstResponder]; //主要是[receiver resignFirstResponder]在哪调用就能把receiver对应的键盘往下收

return YES;

}

界面重写绘制行为

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tj611的专栏

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