IOS学习 UITextField 属性和代理

来源：互联网发布：矩阵svd分解例子编辑：程序博客网时间：2024/06/08 18:19

@implementation HomeViewController

- (void)viewDidLoad {

[superviewDidLoad];

// Do any additional setup after loading the view.

UITextField *textField = [[UITextFieldalloc]initWithFrame:CGRectMake(self.view.bounds.size.width/2-150,20,300,200)];

textField.backgroundColor = [UIColorcyanColor];

textField.tag =1;

//提示输入内容

textField.placeholder = @"用来提示用户";

//根据宽度改变字体大小

textField.adjustsFontSizeToFitWidth =YES;

//设置自动缩小显示的最小字体大小

textField.minimumFontSize = 16;

//设置清除按钮模式

textField.clearButtonMode =UITextFieldViewModeWhileEditing;

/* 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 */

//设置边框类型

textField.borderStyle =UITextBorderStyleRoundedRect;

/* UITextBorderStyleNone,无边框

UITextBorderStyleLine,有边框

UITextBorderStyleBezel,有边框和阴影

UITextBorderStyleRoundedRect圆角 */

//禁止首字母大写

textField.autocapitalizationType =UITextAutocapitalizationTypeNone;

/* 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*/

//设置键盘类型

textField.keyboardType =UIKeyboardTypeNamePhonePad;

/* 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,*/

//设置return键类型

textField.returnKeyType = UIReturnKeyDone;

/* 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

UIReturnKeyEmergencyCall, 紧急呼叫按钮*/

//键盘外观

textField.keyboardAppearance =UIKeyboardAppearanceDefault;

/* UIKeyboardAppearanceDefault，默认外观，浅灰色

UIKeyboardAppearanceDark

UIKeyboardAppearanceLight

UIKeyboardAppearanceAlert，深灰石墨色*/

//是否安全输入，如果是的，输入内容将为“点”

textField.secureTextEntry = YES;

//输入框的字体大小

textField.font = [UIFontboldSystemFontOfSize:48];

//是否纠错

textField.autocorrectionType =UITextAutocorrectionTypeDefault;

/* UITextAutocorrectionTypeDefault, 默认

UITextAutocorrectionTypeNo, 不自动纠错

UITextAutocorrectionTypeYes, 自动纠错 */

//再次编辑就清空

textField.clearsOnBeginEditing =YES;

//内容的水平对齐方式

textField.textAlignment =NSTextAlignmentLeft;

textField.contentHorizontalAlignment =UIControlContentHorizontalAlignmentCenter;

//内容的垂直对齐方式

textField.contentVerticalAlignment =UIControlContentVerticalAlignmentTop;

// 设置弹出视图（不弹键盘弹图片）

UIImageView * imageView = [[UIImageViewalloc]initWithImage:[UIImageimageNamed:@"tree2"]];

imageView.frame = CGRectMake(0, 100, 320, 330);//（跟位置和宽无关）

textField.inputView = imageView;

//最右侧加图片右视图模式会影响清除按钮模式

UIImageView *image=[[UIImageViewalloc]initWithImage:[UIImageimageNamed:@"money2"]];

textField.rightView=image;

textField.rightViewMode =UITextFieldViewModeAlways;

// 设置左视图

UIView * leftview = [[UIViewalloc]initWithFrame:CGRectMake(0,0,100,100 )];//只有宽度起到了作用

textField.leftView = leftview;

leftview.backgroundColor = [UIColorpurpleColor];

// 要设置左视图模式

textField.leftViewMode =UITextFieldViewModeAlways;

//设置代理

textField.delegate = self;

[self.viewaddSubview:textField];

//成为第一响应者

[textField becomeFirstResponder];

UIButton *btn = [[UIButtonalloc]initWithFrame:CGRectMake(self.view.bounds.size.width/2-50,250,100,40)];

[btn setTitle:@"保存"forState:UIControlStateNormal];

btn.backgroundColor = [UIColorpurpleColor];

[btn addTarget:selfaction:@selector(test)forControlEvents:UIControlEventTouchUpInside];

[self.viewaddSubview:btn];

}

- (void)test{

UITextField *tf = (UITextField *)[self.viewviewWithTag:1];

[tf resignFirstResponder]; //移除键盘

}

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textFiel

{

NSLog(@"textFieldShouldBeginEditing");

returnYES; //如果NO，就失去第一响应了

}

//已经开始调用

- (void)textFieldDidBeginEditing:(UITextField *)textField{

NSLog(@"textFieldDidBeginEditing %@",textField);

}

- (BOOL)textFieldShouldEndEditing:(UITextField *)textField{

NSLog(@"textFieldShouldEndEditing %@",textField);

return YES;

}

//调用结束

- (void)textFieldDidEndEditing:(UITextField *)textField{

NSLog(@"textFieldDidEndEditing");

}

/* 当输入任何字符时，代理调用该方法，如果返回YES则这次输入可以成功，如果返回NO，不能输入成功

range表示光标位置，只有location，length == 0；

string表示这次输入的字符串。 */

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string

{

NSString *str;

NSLog(@"range = %@ string = %@",NSStringFromRange(range),string);

return str.length <10;

//textField.text超过了10个字符，返回NO，不让输入成功。(最多输入10个)

//textField.text输入后不到10个字符，返回YES，使输入成功。

return YES;

}

- (BOOL)textFieldShouldClear:(UITextField *)textField{

returnYES;//表示可以删除，NO，表示不可以删除

}

- (BOOL)textFieldShouldReturn:(UITextField *)textField{

[textField resignFirstResponder]; //失去第一响应

return YES;

}

把textfield或者textview中长按出现的(全选，复制，粘贴) 系统相册等提示语显示成中文

在info.plist中添加Localized resources can be mixed,设置为YES.

在plist写入这句就是获取当前手机的语言

将“Done”改为中文“完成”：

1､修改语言选择：中文

Localization native development region ，设置为：China

2､修改框架IQKeyboardManager

IQUIView+IQKeyboardToolbar.m文件里面，找到这一个，替换成initWIthTitle这个方法
// IQBarButtonItem *doneButton =[[IQBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:target action:doneAction];
IQBarButtonItem *doneButton =[[IQBarButtonItem alloc] initWithTitle:@"完成" style:UIBarButtonItemStyleDone target:target action:doneAction];

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