我使用下面的代碼在iPad應用程序上使用ARC,彈出窗口在屏幕上閃爍,但不保留。 我做錯了什麼? 請幫助ARC上的UIPopover
- (IBAction)photoLibraryAction:(id)sender
{
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
[imagePicker setDelegate:self];
UIPopoverController *pop1 = [[UIPopoverController alloc] initWithContentViewController:imagePicker];
[pop1 setDelegate:self];
[pop1 presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
[pop1 setPopoverContentSize:CGSizeMake(320, 400)];
}
if ([pop1 isPopoverVisible])
{
// Popover is not visible
[pop1 dismissPopoverAnimated:YES];
}
}
'if'是什麼? – Ali