objective-c - dismissViewControllerAnimated execution has delay

Question

Clicked the tableView in

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

Execute

[self dismissViewControllerAnimated:YES completion:nil];

The current interface will not close immediately and there will be a 3-4s delay. If you click anywhere on the current interface again, it will close immediately.

This problem does not occur when using Button to execute the above code to close it.

Answer 1

I also encountered the exact same problem. It can be solved by adding the following

dispatch_async(dispatch_get_main_queue(), ^{
        [self dismissViewControllerAnimated:NO completion:nil];
    });

I have also printed that the threads are all main threads, but I don’t understand why such a problem occurs
<NSThread: 0x17007a040>{number = 1, name = main}