UIPopoverController

Question

I would open a tableview pressing a button. I made several attempts, according to this scheme:

- (IBAction)menuContext:(id)sender {
    //ViewController2 *xx = [[ViewController2 alloc] init];
    //ViewControllerXXX *xx = [[ViewControllerXXX alloc] init];
    ViewController2 *xx = [[ApplicationModel sharedInstance] getView2];

    UIPopoverController *over = [[UIPopoverController alloc] initWithContentViewController:xx];

    [over setDelegate: (id) self];

    [over presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated: YES];

}

but just clicks the button the program crashes ...
ViewController2 is a subclass of UITableViewController. I can use it on the popover? thanks

Answer 1

我想您没有设置按钮的选择器。请确保已完成选择（或者），您可能会将选择器设置为返回nil参数的方法