如何更改UIPickerView中每个组件的宽度？

Question

如何更改每个组件的宽度UIPickerView？

Answer 1

pickerView:widthForComponent:在picker的委托中实现方法,并从中返回每个组件的适当宽度.例如

- (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component{
      switch (component){
           case 0: 
                return 100.0f;
           case 1: 
                return 60.0f;
     }
      return 0;
}