Question

我有一个UIPickerView，有5个不同的对象，还有一个按钮。当我按下按钮时，我想转到下一个ViewController。

例如：当我在Options中选择UIPickerView并按下按钮时，我想转到OptionsViewController ...我尝试使用switchCase，但它对我不起作用。在switchCase里面，我把：

        [self performSegueWithIdentifier:@"goToOptions" sender:nil];

我现在的问题是：如何连接viewcontrollers以及如何调用此viewcontroller开关？

完整的switchCase是：

  switch (rowSelected) {
            case Start_Game:
                [self performSegueWithIdentifier:@"goToGame" sender:sender];
                break;
            case Scores:
                [self performSegueWithIdentifier:@"goToScores" sender:sender];
                break;
            case How_To_Play:
                [self performSegueWithIdentifier:@"goToHTP" sender:sender];
                break;
            case Options:
                [self performSegueWithIdentifier:@"goToOptions" sender:sender];
                break;
            case About:
                [self performSegueWithIdentifier:@"goToAbout" sender:sender];
                break;
            default:
                break;

Answer 1

做这样的事......

-(IBAction)btnClickMethod:(id)sender
{
    NSString *identifier;
    switch(cases)

       case 0:
           identifier=@"abc";  //set this identifier as per your case and condition
           break;

       case 1:
           identifier=@"def"; //set this identifier as per your case and condition
           break;

       default
           identifier=@"ghi" //set this identifier as per your case and condition
           break;

     [self performSegueWithIdentifier:identifier sender:sender];
}


- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    // Make sure your segue name in storyboard is the same as this line
    if ([[segue identifier] isEqualToString:@"abc"])
    {
        // Get reference to the destination view controller
        YourViewController *vc = [segue destinationViewController];

        // Pass any objects to the view controller here, like...
        [vc setMyObjectHere:object];
    }
if ([[segue identifier] isEqualToString:@"def"])
    {
        // Get reference to the destination view controller
        YourViewController *vc = [segue destinationViewController];

        // Pass any objects to the view controller here, like...
        [vc setMyObjectHere:object];
    }

等......取决于开关中的案例数

使用开关盒执行不同的segue

1 个答案: