How can I know which button Index of UIAlertView is clicked when I use UIWebview to make a call

Question

I am able to generate an alert allowing the user to make a call using a UIWebView with this code:

UIWebView *webV= [[UIWebView alloc] init];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"tel:1834563578"]];
[webV loadRequest:request];

However, when I use UIWebView to make a call, the system presents an alert. I want to know which button index the user selected. I don't know how to retrieve the index of the option the user chooses in the alert.

Answer 1

Just for iOS10+.

You can detect a call in UIWebViewDelegate:

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
    if ([request.URL.absoluteString hasPrefix:@"tel:"]) {
        // make a call

        // this method is available in iOS10
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:phoneNumber] 
                                           options:nil 
                                           completionHandler:^(BOOL success) {
            // if success is NO, user tap cancel button, or other
            NSLog(@"%d", success);
        }];

        return NO; // the default view will not show
    }
    return YES;
}

Set up UIWebView:

UIWebView *webV= [[UIWebView alloc] init];
webV.delegate = self;
NSURLRequest *request = [NSURLRequest requestWithURL: [NSURL URLWithString:@"tel:1834563578"]];
[webV loadRequest: request];

By this, you will know which button tapped depend on success in completionHandler.