如何在iOS 7中更改UIPickerView中的文本字体？ [英] How can I change text font in UIPickerView in iOS 7?

问题描述

我可以改变我的字体颜色，但我也需要改变字体大小，我怎么能做到这一点？这里是我的代码chaning的颜色，

pre $ NS $分配的字符串pickerView：（UIPickerView *）pickerView的归档的行数：（NSInteger）行forComponent：（NSInteger）组件{
NSString * title = _currencyName [row];
NSAttributedString * attString = [[NSAttributedString alloc] initWithString：title属性：@ {NSForegroundColorAttributeName：[UIColor whiteColor]}];

return attString;

$ / code $ / $ p

更新：这是行不通的：

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

解决方案

   - （ UIView *）pickerView：（UIPickerView *）pickerView viewForRow：（NSInteger）row forComponent：（NSInteger）组件reusingView：（UIView *）view 
 {
 UILabel * tView =（UILabel *）view; 
 if（！tView）
 {
 tView = [[UILabel alloc] init]; 
 [tView setFont：[UIFont fontWithName：@Helveticasize：14]]; 
 // [tView setTextAlignment：UITextAlignmentLeft]; 
 tView.numberOfLines = 3; 
} 
 //在这里填写标签文本
 tView.text = [wishvalues objectAtIndex：row]; 
返回tView; 
} 
  

I was able to change my font color but I also need to change font size, how can I accomplish that? Here's my code for chaning the color,

 - (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: this didn't work:

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

解决方案

- (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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