[英]Delegate method is not calling in the Tableview
iPadApp:我有兩個班TimeTableViewController
和MLCViewController
創造了一個協議MLCViewController
和協議,我想在調用TimeTableViewController
。 但是delegate(protocol)
方法未在TimeTableViewController
調用。
這是我的代碼……。
在MLCViewController.h中
//created protocol
@protocol MLCCancelDelegate;
@protocol MLCCancelDelegate <NSObject>
@optional
-(void)CancelMLCSession;
@end
@property(nonatomic,weak)id <MLCCancelDelegate>Mlcdelegate;
MLCViewController.m
//Which is written in a UIAlertView Delegate method
switch (buttonIndex) {
case 0:
{
if (self.Mlcdelegate && [self.Mlcdelegate respondsToSelector:@selector(CancelMLCSession)])
{
[self.Mlcdelegate CancelMLCSession];
}
break;
}
default:
break;
}
}
在TimeTableViewController.m中
//ViewDidLoad
self.fifthViewController=[[MLCViewController alloc]init];
fifthViewController.Mlcdelegate = self;
//-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
UIStoryboard* storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
UIViewController* vc = [storyboard instantiateViewControllerWithIdentifier:@"MLCNote"];
pc = [[UIPopoverController alloc] initWithContentViewController:vc];
pc.delegate = self;
[pc presentPopoverFromRect:rect inView:collectionData
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
//Iam calling that delegate method like
-(void)CancelMLCSession{
NSLog(@"cancelling");
}
試穿
self. before fifthViewController.Mlcdelegate = self;
嘗試這個,
UIStoryboard* storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
MLCViewController* vc = (MLCViewController *)[storyboard instantiateViewControllerWithIdentifier:@"MLCNote"];
vc.Mlcdelegate = self;
self.fifthViewController = vc;
//rest stuff
添加此代碼
UIStoryboard* storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
self.fifthViewController = [storyboard instantiateViewControllerWithIdentifier:@"MLCNote"];
pc = [[UIPopoverController alloc] initWithContentViewController:self.fifthViewController];
pc.delegate = self;
self.fifthViewController.Mlcdelegate=self;
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