John John - 3 months ago 17
iOS Question

Back Button on UIWebView

I'm trying to figure out how to create a back button that allows the user to go back one page. I read through Apple's Docs (which still go way over my head) and found out that I need to setup the

canGoBack
and
goBack
's. I have tried this, but for some reason it is not working. My
UIWebView
is named
viewWeb
, and I created and attached an outlet to my Back button, named
backButton
, and also tagged it as 1. Here is my code that I wrote in the View Controller:

// Back button:
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 1) {

[_backButton addTarget:_viewWeb
action:@selector(goBack)
forControlEvents:UIControlEventTouchDown];

if ([_viewWeb canGoBack]) {

NSLog(@"Back button pressed.");
[_viewWeb goBack];
}
}

else return;
}


Does anyone know what I need to change / add to get this working?

Answer

actionSheet:clickedButtonAtIndex: is for UIActionSheet objects, not UIButton actions.

You should probably write an IBAction method that looks something like this:

- (IBAction)backButtonTapped:(id)sender {
   [_viewWeb goBack];
}

and connect it to the Touch Up Inside action from the button.

You can search for more info on IBAction but that's likely what you want

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