ios - UiPickerView 在其行滚动之前无法工作 ios

Question

我有一个 UIPickerView 。它工作正常。但在滚动行之前它不会选择任何行。

这是我的代码。

 selectProArray = [[NSMutableArray alloc]initWithObjects:@"ABC",
                                                         @"DEF",
                                                         @"IJK",
                                                         nil];

 selectPROPicker = [[UIPickerView alloc]init];
 selectPROPicker.backgroundColor = [UIColor colorWithRed:209.0/255.0 
                                                    green:213.0/255.0 
                                                    blue:219.0/255.0 
                                                    alpha:1];

 -(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
    {
         selectedPickerRow=[selectProArray objectAtIndex:row];
         NSLog(@"SelectedRow=%@",selectedPickerRow);
         rowID = row;
         [selectField resignFirstResponder];
    }

Answer 1

在pickerView中选择一行

picker= [[UIPickerView alloc]init];
[picker selectRow:0 inComponent:0 animated:NO];

要更新 textField 中的值，请为您的 textField 设置委托(delegate)

- (void)textFieldDidBeginEditing:(UITextField *)textField
{
   textField.text = [self.yourArrayName objectAtIndex:[self.yourPickerName selectedRowInComponent:0]];//component index may differ for u
}