UITextField

1、UILabel的基本设置

2、UITextFiel的基本设置

3、设置UITextFiel输入长度的限制

4、弹出提示消息

5、UITextFiel输入时自动隐藏键盘

- (void)LY_Display
{
    UILabel *LY_Label = [[UILabel alloc] initWithFrame:CGRectMake(60, 180, 60, 30)];
    [self.view addSubview:LY_Label];
    LY_Label.backgroundColor = [UIColor clearColor];
    LY_Label.text = @"密   码";
    LY_Label.font= [UIFont fontWithName:@"zapfino" size:(15.0f)]; //字体设置
   

    UITextField *LY_Text = [[UITextField alloc] initWithFrame:CGRectMake(143, 180, 80, 30) ];
    [self.view addSubview:LY_Text];
    LY_Text.backgroundColor = [UIColor whiteColor];
    [LY_Text setBorderStyle:UITextBorderStyleLine];             //边框设置
    LY_Text.placeholder = @"password";                          //默认显示的字
    LY_Text.font = [UIFont fontWithName:@"helvetica" size:12];  //字体和大小设置
    LY_Text.textColor = [UIColor redColor];                     //设置字体的颜色
    LY_Text.clearButtonMode = UITextFieldViewModeWhileEditing;  //清空功能x
    LY_Text.returnKeyType = UIReturnKeyDone;                    //键盘有done
    LY_Text.secureTextEntry = YES;                              //密码输入时
    LY_Text.delegate = self;                                    //托管
    
}

//消息弹出提示
void show(id formatstring)
{
    
    UIAlertView *Point = [[[UIAlertView alloc] initWithTitle:nil message:formatstring delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil] autorelease];
    [Point show];
}

//UITextField输入长度限制
-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    if (range.location >= 8) 
    {
        show(@"密码长度有误");
        return NO;
    }
    return YES;

}

 

//点击软键盘上"Done"这个键，键盘自动隐藏
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textField resignFirstResponder];
    return YES;
}

 

from:http://diandianyangsamllplace.diandian.com/post/2011-08-11/3745463

 

 iPhone UITextField - Change placeholder text color

from:http://stackoverflow.com/questions/1340224/iphone-uitextfield-change-placeholder-text-color

[self.myTextField setValue:[UIColor darkGrayColor]  
                forKeyPath:@"_placeholderLabel.textColor"]; 

 

You can override drawPlaceholderInRect:(CGRect)rect as such to manually render the placeholder text:

-(void) drawPlaceholderInRect:(CGRect)rect { 
    [[UIColor blueColor] setFill]; 
    [[self placeholder] drawInRect:rect withFont:[UIFont systemFontOfSize:16]]; 
}