UUicker从NSUserDefaults中选择双值

Question

我是初学者...... 我有NSUserDefaults来获取UIPicker选项和双值来加载UIPicker的选择。

 NSUserDefaults *pickerViewSelectionDefaults = [NSUserDefaults standardUserDefaults];
        [pickerWork selectRow:[pickerViewSelectionDefaults integerForKey:@"pickerSelectionMinWork"] inComponent:0 animated:YES];

double dobMinute = [[NSString stringWithFormat:@"%f", [[minArray objectAtIndex:[pickerWork selectedRowInComponent:0]] floatValue]] doubleValue]*60;

如何将 selectedRowInComponent：替换为 selectRow：inComponent：animated：，因为我遇到此错误：

发送＆＃39;无效＆＃39;到不兼容类型的参数＆＃39; NSUInteger＆＃39; （又名＆＃39; unsigned long＆＃39;）

提前致谢！

Answer 1

变化

  double dobMinute = [[NSString stringWithFormat:@"%f", [[minArray objectAtIndex:[pickerWork selectedRowInComponent:0]] floatValue]] doubleValue]*60;

到

double dobMinute = [pickerViewSelectionDefaults integerForKey:@"pickerSelectionMinWork"]*60;