objective c - iOS: Changing the background image on tap gesture -


i have tap gesture set , when tap in simulator nslog fires, i'm sure it's hitting it:

@implementation coolcontroller  - (void)viewdidload {     [super viewdidload];     ...      uitapgesturerecognizer *backgroundtaprecognizer = [[uitapgesturerecognizer alloc] initwithtarget:self action:@selector(backgroundtapped)];     backgroundtaprecognizer.numberoftapsrequired = 2;     [self.view addgesturerecognizer:backgroundtaprecognizer]; }  - (void) backgroundtapped {     nslog(@"cool"); // <-- fires when tap twice     [self.view setbackgroundcolor:[uicolor colorwithpatternimage:[uiimage imagenamed:@"table-2"]]]; }

however, image in background doesn't change. need call method update ui?

try this

  • (void) backgroundtapped: (id)sender

-

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