如何在iOS 7中更改UIPickerView中的文本字体？

我能够改变我的字体颜色，但我也需要改变字体大小，我该怎么做到这一点？这里是我的chaning颜色代码，如何在iOS 7中更改UIPickerView中的文本字体？

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

    return attString; 
}

UPDATE：这并不工作：

NSAttributedString *attString = [[NSAttributedString alloc] initWithString:title attributes:@{NSForegroundColorAttributeName:[UIColor whiteColor], NSFontAttributeName: [UIFont fontWithName:@"HelveticaNeue-Light" size:40]}];

来源

2013-12-20 user3121912

- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view 
{ 
    UILabel* tView = (UILabel*)view; 
    if (!tView) 
    { 
     tView = [[UILabel alloc] init]; 
     [tView setFont:[UIFont fontWithName:@"Helvetica" size:14]]; 
     //[tView setTextAlignment:UITextAlignmentLeft]; 
     tView.numberOfLines=3; 
    } 
    // Fill the label text here 
    tView.text=[wishvalues objectAtIndex:row]; 
    return tView; 
}

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2013-12-20 07:45:34 mak

我认为你必须在你的attributes列表中添加NSFontAttributeName，你可以使用类方法fontWithName:size:的UIFont

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2013-12-20 07:43:56 zbMax

我尝试过，不工作：NSAttributedString * attString = [[NSAttributedString的alloc] initWithString：标题属性：@ {NSForegroundColorAttributeName：[的UIColor whiteColor] NSFontAttributeName：[UIFont fontWithName：@“HelveticaNeue-Light”size：40]}]; – user3121912

你有什么想法吗？ – user3121912

对不起，我的错。 NSFontAttributeName适用于一系列文本。所以你必须添加类似'[attString addAttribute：NSFontAttributeName value：/ *你的字体* /范围：NSMakeRange（0，attString.length）];' – zbMax

您需要实现pickerView:viewForRow:forComponent:reusingView:方法选择器的委托

- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view{ 
    UILabel* lbl = (UILabel*)view; 
    // Customise Font 
    if (lbl == nil) { 
      //label size 
      CGRect frame = CGRectMake(0.0, 0.0, 70, 30); 

      lbl = [[UILabel alloc] initWithFrame:frame]; 

      [lbl setTextAlignment:UITextAlignmentLeft]; 

      [lbl setBackgroundColor:[UIColor clearColor]]; 
      //here you can play with fonts 
      [lbl setFont:[UIFont fontWithName:@"Times New Roman" size:14.0]]; 

    } 
     //picker view array is the datasource 
    [lbl setText:[pickerViewArray objectAtIndex:row]]; 


     return lbl; 
}

来源

2013-12-20 07:43:59 the1pawan

您可以使用下面的代码来设置pickerview的字体..

- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view { 
    UILabel *tView = (UILabel *)view; 
    if (!tView){ 
     tView = [[UILabel alloc] init]; 
     [tView setFont:[UIFont .....]];//set font 
      // Setup label properties - frame, font, colors etc 
      ... 
    } 
    // Fill the label text here 
    ... 
    return tView; 
}

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2013-12-20 08:03:14

工作就像我的魅力... upvoted！ – NSPratik

这里的雨燕版本上iOS8上进行了测试：

更新在斯威夫特iOS8上，你可以将它添加到您的代表：

func pickerView(pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusingView view: UIView!) -> UIView { 

    var pickerLabel = view as? UILabel; 

    if (pickerLabel == nil) 
    { 
     pickerLabel = UILabel() 

     pickerLabel?.font = UIFont(name: "Montserrat", size: 16) 
     pickerLabel?.textAlignment = NSTextAlignment.Center 
    } 

    pickerLabel?.text = fetchLabelForRowNumber(row) 

    return pickerLabel!; 
}

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2015-07-19 11:18:32

感谢@Richard Bown

这对Swift来说会更好吗？

func pickerView(pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusingView view: UIView?) -> UIView { 
     if let titleLabel = view as? UILabel { 
      titleLabel.text = "Your Text" 
      return titleLabel 
     } else { 
      let titleLabel = UILabel() 
      titleLabel.font = UIFont.boldSystemFontOfSize(16)//Font you want here 
      titleLabel.textAlignment = NSTextAlignment.Center 
      titleLabel.text = "Your Text" 
      return titleLabel 
     } 
    }

来源

2016-01-19 11:00:39

let textLabel = view as? UILabel ?? { 
    let label = UILabel() 
    label.font = UIFont.boldSystemFontOfSize(16) 
    label.textAlignment = .Center 
    return label 
}() 
textLabel.text = Array(componentDataSources[component].keys)[row] 
return textLabel

来源

2016-08-10 16:39:15

更新了夫特4：

public func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView { 
    let label = view as? UILabel ?? UILabel() 
    label.font = .systemFont(ofSize: 16) 
    label.textColor = .white 
    label.textAlignment = .center 
    label.text = text(for: row, for: component) 
    return label 
}

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2017-12-21 05:46:17

如何在iOS 7中更改UIPickerView中的文本字体？

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