如何在iOS中将UIPickerView文本颜色更改为白色

问题描述：

我想知道是否有人知道如何将UIPickerView文本颜色更改为白色。我的代码如下：如何在iOS中将UIPickerView文本颜色更改为白色

代码：

(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component 
{ 

    [self.pickerView setValue:[UIColor whiteColor] forKey:@"textColor"]; 

}

任何想法？

- （UIView的*）pickerView：（UIPickerView *）pickerView viewForRow：（NSInteger）row forComponent：（NSInteger）component reusingView：（UIView *）view { UILabel * label = [[UILabel alloc] initWithFrame：CGRectMake（0，0，pickerView.frame.size.width，44）]; label.backgroundColor = [UIColor clearColor]; label.textColor = [UIColor WhiteColor]; label.font = [UIFont fontWithName：@“HelveticaNeue-Bold”size：18]; label.text = [NSString stringWithFormat：@“％c”，65 + row]; // ASCII 65是“A” 返回标签; } 明白了谢谢 – Nimmy

答

使用此代码

- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view 
{ 
    UILabel *tView = (UILabel*)view; 
    if (!tView) 
    { 
     tView = [[UILabel alloc] init]; 
     [tView setTextColor:[UIColor whiteColor]]; 
     [tView setFont:[UIFont fontWithName:@"font-name-here" size:15]]; 
     [tView setTextAlignment:NSTextAlignmentCenter]; 
    } 
    // Fill the label text here 
    return tView; 
}

答

有一个委托方法：

- (NSAttributedString *)pickerView:(UIPickerView *)pickerView attributedTitleForRow:(NSInteger)row forComponent:(NSInteger)component 
{ 
    NSString *title = @"sample title"; 
    NSAttributedString *attString = [[NSAttributedString alloc] initWithString:title attributes:@{NSForegroundColorAttributeName:[UIColor whiteColor]}]; 

return attString; 

}

答

有一个委托方法，通过它可以实现期望的输出。

的Objective-C：

- (NSAttributedString *)pickerView:(UIPickerView *)pickerView attributedTitleForRow:(NSInteger)row forComponent:(NSInteger)component 
{ 
    NSString *strTitle = @"YourTitle"; 
    NSAttributedString *attString = [[NSAttributedString alloc] initWithString:strTitle attributes:@{NSForegroundColorAttributeName:[UIColor whiteColor]}]; 

    return attString; 

}

斯威夫特：

func pickerView(pickerView: UIPickerView, attributedTitleForRow row: Int, forComponent component: Int) -> NSAttributedString? { 

    let strTitle = "YourTitle" 
    let attString = NSAttributedString(string: strTitle, attributes: [NSForegroundColorAttributeName : UIColor.whiteColor()]) 
    return attString 
}

希望这将帮助你:)

如何在iOS中将UIPickerView文本颜色更改为白色

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