UITextField

目录
  1.1 设置返回键样式
  1.2 设置边框样式
  1.3 一键删除
  1.4 密文
  1.5 添加左右视图
  1.6 监听键盘出现
  1.7 放弃第一响应者
  1.8 数字键盘
  1.9 手机号验证
  1.10 return键点击

1.1 设置返回键样式

textField.returnKeyType=UIReturnKeyDone;

1.2 设置边框样式

textField.borderStyle=UITextBorderStyleRoundedRect;

1.3 一键删除

textField.clearButtonMode=UITextFieldViewModeAlways;

1.4 密文

textField.secureTextEntry=NO;

1.5 添加左右视图

UIImage *image=[UIImage imageNamed:@"account_candou"];

UIImageView *imageview=[[UIImageView alloc]initWithFrame:CGRectMake(0,0 ,
 50, 50)];

imageview.image=image;

textField.leftView=imageview;

textField.leftViewMode=UITextFieldViewModeAlways;

1.6 监听键盘出现

1.出现

[[NSNotificationCenter defaultCenter] addObserver:self 
selector:@selector(keyboardWillShow:) 
name:UIKeyboardWillShowNotification object:nil];

2.消失

[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillHidden:) 
name:UIKeyboardWillHideNotification object:nil];

3.实现方法

- (void)keyboardWillShow:(NSNotificationCenter *)noti{
    
    self.tableView.frame = CGRectMake(0, 0, 
    SCREEN_WIDTH, SCREEN_HEIGHT - 280);
    
}

- (void)keyboardWillHidden:(NSNotificationCenter *)noti{
    
    self.tableView.frame = CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
    
}

1.7 放弃第一响应者

- (BOOL)textFieldShouldReturn:(UITextField *)textField;
{
[textField resignFirstResponder];

return YES;

}

1.8 数字键盘

textField.keyboardType = UIKeyboardTypePhonePad;

1.9 手机号验证

记得写代理

- (BOOL)textField:(UITextField*)textField 
shouldChangeCharactersInRange:(NSRange)range 
            replacementString:(NSString*)string {
    NSCharacterSet *cs;
    
    cs = [[NSCharacterSet characterSetWithCharactersInString:@"0123456789"] 
    invertedSet];
    
    NSString*filtered = [[string componentsSeparatedByCharactersInSet:cs]
                        componentsJoinedByString:@""];
    
    BOOL basicTest = [string isEqualToString:filtered];
    
    if(!basicTest) {
        
        return NO;
        
    }
    
    NSString *temp = [textField.text 
                stringByReplacingCharactersInRange:range 
                                        withString:string];
    
    if (temp.length > 11) {
        
        return NO;
        
    }
    
    return YES;
    
}

1.10 return键点击

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

    return YES;

}