javascript - Cannot prevent Safari's useless action sheet from showing when long pressing a link on WKWebView -

i know accepted answer inject javascript on page:

document.body.style.webkittouchcallout='none'; 

i'm doing injection when page finishes loading:

- (void)webview:(wkwebview *)webview didfinishnavigation:(wknavigation *)navigation {     [_webview evaluatejavascript:@"document.body.style.webkittouchcallout='none';"                completionhandler:^(id result, nserror *error){                     nslog(@"javascript: {%@, %@}", result, error.description);                }]; } 

this leaves me serious issue , second 1 in case though single issue not enough.

1. if page hasn't finished loading , user long presses safari's useless action sheet still appears.

2. on pages iframes action sheet still appears after page has finished loading , javascript has been injected.

any suggestions?