確定PickerView值IBAction爲按

Question

後，我有一個iOS的UiPicker與我的期望值工作，當一個新的選項與下面的代碼選擇可以檢測：

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component { 

    NSString *aCompany = [arrayColour objectAtIndex:[pickerView selectedRowInComponent:0]]; 

    UIAlertView *alert = [[UIAlertView alloc] 
          initWithTitle:@"Picked:" 
          message:aCompany 
          delegate:nil 
          cancelButtonTitle:@"Okay" 
          otherButtonTitles:nil]; 

    [alert show]; 


} 

我的問題是如何獲取最新從按下一個按鈕，這樣以後選擇器：

- (IBAction)DoneButton:(id)sender { 



    UIAlertView *alert = [[UIAlertView alloc] 
          initWithTitle:@"Picked:" 
          message:aCompany 
          delegate:nil 
          cancelButtonTitle:@"Okay" 
          otherButtonTitles:nil]; 

    [alert show]; 

} 

Answer 1

設置您pickerView作爲IBOutlet（和鏈路使用IB），那麼你可以訪問它的didSelectRow之外。

@property (nonatomic) IBOutlet UIPickerView *myPickerView; 

然後你可以用下面一行在DoneButton：

NSString *aCompany = [arrayColour objectAtIndex:[self.myPickerView selectedRowInComponent:0]];