遇到了这个问题,然后查找了 Stackoverflow 下面是问题,然后还有Stackoverflow上面的回答:Stackoverflow
Here is all my code :
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
UIBarButtonItem *leftItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pushTableViewController:)];
self.navigationItem.leftBarButtonItem = leftItem;
}
- (void)pushTableViewController:(id)sender {
TableViewController *tableViewController = [[TableViewController alloc]init];
[self.navigationController pushViewController:tableViewController animated:YES];
}
The TableViewController code is:
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
UIBarButtonItem *myMessageButton = [[UIBarButtonItem alloc] initWithTitle:@"back" style:UIBarButtonItemStylePlain target:self action:@selector(myMessageButtonClicked:)];
self.navigationItem.leftBarButtonItem = myMessageButton;
UITableView *scrollTableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) style:UITableViewStylePlain];
scrollTableView.delegate = self;
scrollTableView.dataSource = self;
[self.view addSubview:scrollTableView];
}
- (void)myMessageButtonClicked:(id)sender
{
[self.navigationController popViewControllerAnimated:YES];
}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
}
Just use the most simplest way to use UITableView
,and implement scrollViewDidScroll
when I scroll the UITableView
to the bottom and then popViewControllerAnimated
i got crash. is this BUG of IOS? or where did i go wrong?
比较认同的答案:
The problem is,tableview try to access
scrollViewDidScroll
delegate method during the time of animating viewController. so after reaching scroll at bottom, setdatasourceanddelegateas Nil before popViewController.
