Question

我在.h文件中声明了NSString。然后我在ViewDidload内分配一个值。在我的didSelectRowatIndex事件中，想要将该值分配给先前Viewcontroller中的另一个字符串。

·H

`

 NSString *strWifiId;

 NSArray *arrstrWifiId;`

`
- （void）viewDidLoad {

        arrstrWifiId=[arrWorkflow valueForKey:@"WFID"];

        strWifiId=[NSString stringWithFormat:@"%@",[arrstrWifiId objectAtIndex:0] ];
 }

`

 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

NSArray *array = [self.navigationController viewControllers];

NSLog(@"navi array count ----- %d",[array count]);


UITableViewCell *selectedCell=[tableView cellForRowAtIndexPath:indexPath];




for (UIViewController* viewController in self.navigationController.viewControllers) {


    if ([viewController isKindOfClass:[SendTimeChangeRequestViewController class]] ) {


        SendTimeChangeRequestViewController *groupViewController = (SendTimeChangeRequestViewController*)viewController;


        [groupViewController.btnwrkflwFirstApprove setTitle:selectedCell.textLabel.text forState:UIControlStateNormal];


        groupViewController.pWorkFlowID=strWifiId;

        NSLog(@"WFID---- %@",groupViewController.pWorkFlowID);
        //NSLog(@"CELL TAG----- %@",groupViewController.pAuthEmployeeCode);


        [self.navigationController popToViewController:groupViewController animated:YES];
    }
}

`

这里NSLog打印一些垃圾值。为什么我能解决这个问题？

由于

Answer 1

您拥有从您负责发布的initWithFormat返回的对象，但您不拥有从stringWithFormat返回的返回自动释放字符串的对象，因此不需要释放它（如果你想拥有它，你必须保留它。）

因此，要解决您的问题，请尝试分配您的值，

- (void)viewDidLoad {

        arrstrWifiId=[arrWorkflow valueForKey:@"WFID"];

        strWifiId=[[NSString alloc] initWithFormat:@"%@",[arrstrWifiId objectAtIndex:0] ];
 }

无法访问viewdidload之外的NSString

1 个答案: