Ios 目标-C-带performSegueWithIdentifier的推送NSArray

我这里有一段代码：

if(isLocationTag == YES)
    {
        NSArray *isLocationTagArray = [self getLocationInfo:Name];

        if(isLocationTagArray == nil)
        {

            UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Message" message:@"There is an issue with the location tag." preferredStyle:UIAlertControllerStyleAlert];

            UIAlertAction* ok = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:nil];
            [alertController addAction:ok];

            [self presentViewController:alertController animated:YES completion:nil];

            ScannerMessage.text = @"READY TO SCAN";
            ScannerMessage.backgroundColor = [UIColor greenColor];

        }
        else
        {
            [self performSegueWithIdentifier: @"SegueIdentifier" sender: self];
        }
    }

我要做的是用

performsguewithidentifier

我添加了以下方法：

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

    if([[segue identifier] isEqualToString:@"SegueIdentifier"])
    {
        ListViewController *myVC = [segue destinationViewController];
    }

}

---

但是如何传递NSArray？

将

isLocationTagArray

设置为模块级变量。然后将一个属性添加到您的

ListViewController

，该属性可以接受

NSArray

那你就可以这么做了

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

    if([[segue identifier] isEqualToString:@"SegueIdentifier"])
    {
        ListViewController *myVC = [segue destinationViewController];
        myVC.dataArray = isLocationTagArray
    }

 }

---

您必须在目标VC（ListViewController）中定义一个属性，然后在prepareForSegue中进行设置。大概是这样的：

ListViewController.h

@property (strong,nonatomic) NSArray* theParamenterArray;

然后在你的准备格中：

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

    if([[segue identifier] isEqualToString:@"SegueIdentifier"])
    {
        ListViewController *myVC = [segue destinationViewController];
        myVC.theParamenterArray = isLocationTagArray;
    }
}

---

这是使用脚本在VCs之间交换所有数据的标准方式。

您可以将您的

NSArray作为发送方传递：

...
[self performSegueWithIdentifier: @"SegueIdentifier" sender: isLocationTagArray];
...
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

    if ([segue.identifier isEqualToString:@"SegueIdentifier"]) {
        ListViewController *myVC = [segue destinationViewController];
        if ([sender isKindOfClass: [NSArray class]]) {
            myVC.dataArray = (NSArray *) sender;
        }
    }

 }