h5的拨打电话代码是
移动WEB页面JS一键拨打号码咨询功能UIWebView加载的h5，可以调用；但是WKWebView就是不行，找了半天，最后解决，在WKWebView的WKNavigationDelegate代理方法处理，
代码如下：/ 处理拨打电话以及Url跳转等等
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
NSURL *URL = navigationAction.request.URL;
NSString *scheme = [URL scheme];
if ([scheme isEqualToString:@"tel"]) {
NSString *resourceSpecifier = [URL resourceSpecifier];
NSString *callPhone = [NSString stringWithFormat:@"telprompt://%@", resourceSpecifier];
/// 防止iOS 10及其之后，拨打电话系统弹出框延迟出现
dispatch_async(dispatch_get_global_queue(0, 0), ^{
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:callPhone]];
});
}
decisionHandler(WKNavigationActionPolicyAllow);
}
