1.默认文本
_loginTextField.placeholder = @"QQ号/手机";
2.设置边框
_loginTextField.borderStyle = UITextBorderStyleRoundedRect;
typedef enum {
UITextBorderStyleNone,
UITextBorderStyleLine,
UITextBorderStyleBezel,
UITextBorderStyleRoundedRect
} UITextBorderStyle;
3.设置键盘类型
_loginTextField.keyboardType = UIKeyboardTypeDefault;
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;
4.更改键盘下方的ruturn
_loginTextField.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;
5.小叉叉
_loginTextField.clearButtonMode = UITextFieldViewModeWhileEditing;
6.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;
7.再次编辑就清空
text.clearsOnBeginEditing = YES;
8.UITextFieldViewMode
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;
9.键盘外观
textView.keyboardAppearance=UIKeyboardAppearanceDefault；
typedef enum {
UIKeyboardAppearanceDefault， 默认外观，浅灰色
UIKeyboardAppearanceAlert， 深灰 石墨色
} UIReturnKeyType;
10.左边小图，放大镜或者解锁图案
UIImage * image = [UIImage imageNamed:@"search"];
UIImageView * imageview =[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 30, 30)];
imageview.image = image;
_loginTextField.leftView = imageview;
_loginTextField.leftViewMode = UITextFieldViewModeAlways;//放大镜一直出现
11.return键隐藏键盘
-(BOOL)textFieldShouldReturn:(UITextField *)textField{
//点击textField为第一响应者，键盘弹出
//取消textField第一响应者
[textField resignFirstResponder];
//[textField becomeFirstResponder];
return YES;
}
12.设置代理(状态改变回调相应的方法)
_loginTextField.delegate =self;
定义了一套代理用来监听控件的状态变化
@interface ViewController : UIViewController<UITextFieldDelegate>