ios－UITextField详解

来源：互联网发布：bilibili直播软件 mac 编辑：程序博客网时间：2024/06/02 20:58

转：http://blog.sina.com.cn/s/blog_6d43c0f9010124p0.html

os－UITextField详解

UITextField*emailTextField

//实例话TextField对象

emailTextField = [[UITextField alloc] initWithFrame:CGRectMake(100,50,200,30)];

//默认text内容位为空，此句很重要，因为如果不做说明的话，对一个指向nil的指针发送任何消失都不会有响应

emailTextField.text= @"";

//占位符，当输入框输入文字时站位符消失

emailTextField.placeholder= @"请输入用户名";

//TextField样式

emailTextField.borderStyle= UITextBorderStyleLine;

//输入文字在框中垂直位置的居中

emailTextField.contentVerticalAlignment=UIControlContentVerticalAlignmentCenter;

//点击输入框弹出的键盘样式

emailTextField.keyboardType= UIKeyboardTypeEmailAddress;

//输入文字的大小

emailTextField.font= [UIFont systemFontOfSize:18.0];

//输入的文字自动加密，变为。。。。

emailTextField.secureTextEntry= YES;

//输入自动纠正功能，主要应用在英文输入上面

emailTextField.autocorrectionType =UITextAutocorrectionTypeYes;

//输入的字母全部大写模式

emailTextField.autocapitalizationType =UITextAutocapitalizationTypeAllCharacters;

[self.viewaddSubview:emailTextField];

[emailTextField release];

//改变内容前调用

-(BOOL)textField:(UITextField *)textFieldshouldChangeCharactersInRange:(NSRange)rangereplacementString:(NSString*)string{

// NSLog(@"%@",textField.text);

return YES;

}

//将要编辑时调用

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

[UIViewbeginAnimations:nil context:nil];

[UIViewsetAnimationDuration:0.25];

self.view.frame =CGRectMake(0,0-225, 320, 460);

[UIViewcommitAnimations];

return YES;

}

//将要完成编辑时调用

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

[UIViewbeginAnimations:nil context:nil];

[UIViewsetAnimationDuration:0.25];

self.view.frame =CGRectMake(0,0,320, 460);

[UIViewcommitAnimations];

return YES;

}

//点击return按钮时调用

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

NSLog(@"abc");

return YES;

}

//touch事件，

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{

//当textField不再是第一监听者时键盘关闭

[textFieldresignFirstResponder];

}

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