ios - Doubble Tapped Gesture Not Working -

i have imageview in imageview displayed images when tapped 2 times on images not proper events.

this method not called.

- (void)doubletapwebview:(uitapgesturerecognizer *)gesture {     nslog(@"double-tap");     // nothing here } 

i tried code

uitapgesturerecognizer *doubletap = [[uitapgesturerecognizer alloc] initwithtarget:self action:@selector(doubletapwebview:)];     doubletap.numberoftapsrequired = 2;     doubletap.delegate = self;     [self.imgview addgesturerecognizer:doubletap];   - (bool)gesturerecognizer:(uigesturerecognizer *)gesturerecognizer shouldrecognizesimultaneouslywithgesturerecognizer:(uigesturerecognizer *)othergesturerecognizer {     return yes; } 

and rest of code

uiscrollview *scrollview=[[uiscrollview alloc]initwithframe:cgrectmake(0, 0, 320, 480)];      [scrollview setpagingenabled:yes];      [scrollview setshowshorizontalscrollindicator:no];      frontscards=[[nsmutablearray alloc]initwithobjects:@"cloub1.png",@"cloub2.png",@"cloub3.png",@"cloub4.png", nil];        for(int m=0; m< [frontscards count];m++)     {      //  int randidx=arc4random()%[frontscards count];          nsstring *imagename=[frontscards objectatindex:m];          nsstring *fullimagename=[nsstring stringwithformat:@"%@",imagename];          int padding=25;         // padding given.          cgrect imageviewframe=cgrectmake(scrollview.frame.size.width*m+padding, scrollview.frame.origin.y, scrollview.frame.size.width-2*padding, scrollview.frame.size.height);          imgview=[[uiimageview alloc]initwithframe:imageviewframe];          [imgview setimage:[uiimage imagenamed:fullimagename]];          [imgview setcontentmode:uiviewcontentmodescaleaspectfill];           [scrollview addsubview:imgview];     }      cgsize scrollviewsize=cgsizemake(scrollview.frame.size.width*[frontscards count], scrollview.frame.size.height);       [scrollview setcontentsize:scrollviewsize];      [self.view addsubview:scrollview]; 

help me out this.thanks in advance.

by default imageview userinteractio false can add line of code.

self.imgview.userinteractionenabled=yes; 

and add uigesturerecognizerdelegate in .h file