custom delegate method not call - ios

Question

i have first display start_game screen than after when i click button that time display popupview using xib.in xib class i have create delegate method.when i close the popupview that time call delegate method but not calling
here is my delegate class
.h File
#import
#protocol digbuttonalertdelegate;
#interface digbuttonalert : UIViewController
#property (weak, nonatomic) IBOutlet UIImageView *bg_image;
#property (weak, nonatomic) IBOutlet UILabel *lbl_title;
#property (nonatomic, weak) id<digbuttonalertdelegate> delegate;
#end
#protocol digbuttonalertdelegate <NSObject>
#optional
-(void)digalertclose;
#end
.m File
#import "digbuttonalert.h"
#import "suggestion_alert.h"
#import "UIViewController+CWPopup.h"
#import "zoom_alert.h"
#interface digbuttonalert ()
{
bool status;
}
#end
#implementation digbuttonalert
- (void)viewDidLoad {
[super viewDidLoad];
status=0;
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapDetected)];
singleTap.numberOfTapsRequired = 1;
[self.bg_image setUserInteractionEnabled:YES];
[self.bg_image addGestureRecognizer:singleTap];
// Do any additional setup after loading the view from its nib.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)close:(id)sender {
}
-(void)tapDetected{
NSLog(#"single Tap on imageview");
if(status==0)
{
self.lbl_title.text=#"As you walk you will discover the hidden map.This circle will show your progress.";
status=1;
}
else
{
[self dismissViewControllerAnimated:YES completion:nil];
if ([self.delegate respondsToSelector:#selector(digalertclose)]) {
[self.delegate digalertclose];
}
}
}
here this class i want to call method
#import "digbuttonalert.h"
#interface start_games () <MJSecondPopupDelegate,digbuttonalertdelegate>
{
- (void)viewDidLoad {
digbuttonalert *next=[[digbuttonalert alloc]init];
next.delegate=self;
next.modalTransitionStyle=UIWebPaginationModeRightToLeft;
next.modalPresentationStyle=17;
[self presentViewController:next animated:YES completion:nil];
}
- (void)digalertclose
{
[self StartTimer];
[[NSUserDefaults standardUserDefaults]setObject:#"false" forKey:#"alertstatus"];
}

Answer 1

Change .m file with below :
#protocol digbuttonalertdelegate <NSObject>
#optional
-(void)digalertclose;
#end
#interface digbuttonalert : UIViewController
#property (weak, nonatomic) IBOutlet UIImageView *bg_image;
#property (weak, nonatomic) IBOutlet UILabel *lbl_title;
#property (nonatomic, weak) id<digbuttonalertdelegate> delegate;
#end
And follow basic tutorial steps : enter link description here

Answer 2

Please implement digalertclose delegate in start_games controller like this
-(void)digalertclose {
}
You make digalertclose optional thats why crash does not occur if you remove optional keyword from digbuttonalertdelegate protocol you can see that there will be a crash because you try to fire a delegate but does not implement it.

Answer 3

In your digbuttonalert.h protocol is defined twice.
There is no #end for the interface.
Should be something like
ClassA.h
#protocol YourProtocol <NSObject>
#optional
-(void)yourProtocolOptionalMethod
#end
#interface ClassA.h
#property (weak, nonatomic) id <YourProtocol> delegate;
#end
ClassA.m
-(void) someClassAMethod {
[self.delegate yourProtocolOptionalMethod];
}
ClassB.h
#import "ClassA.h"
#interface ClassB <YourProtocol>
#end
ClassB.m
-(void) someClassBMethod {
ClassA *classA = [ClassA alloc] init];
classA.delegate = self;
}
After setting the delegate now when you will call the delegate from ClassA then it will trigger the protocol implemented method in ClassB
-(void)yourProtocolOptionalMethod {
NSlog(#"");
}

Answer 4

On your class , you need to declare the delegate like this:
#interface YourViewController () < digbuttonalertdelegate >