iOS WKWebView 处理自定义URLScheme如tel

设置WKNavigationDelegate代理

 _webView.UIDelegate = self;

WKNavigationDelegate处理方法

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler{
    NSString *reqUrl = [navigationAction.request.URL.absoluteString stringByRemovingPercentEncoding];
    reqUrl = [reqUrl stringByReplacingOccurrencesOfString:@"tell:" withString:@"tel:"];
    __weak typeof(self) weakSelf=self;
    
    if([reqUrl hasPrefix:@"tel"]){
        NSURL *url=[NSURL URLWithString:reqUrl];
        [UIApplication.sharedApplication openURL:url];
        decisionHandler(WKNavigationActionPolicyCancel);
        return;
        
    }
    
    NSLog(@"%@",reqUrl);
    if([UIApplication.sharedApplication canOpenURL:navigationAction.request.URL]){
        if([reqUrl hasPrefix:@"mailto"]){
            NSURL *url=[NSURL URLWithString:reqUrl];
            [UIApplication.sharedApplication openURL:url];
            decisionHandler(WKNavigationActionPolicyCancel);
            return;
        }
    }
    if([navigationAction.request.URL.scheme hasPrefix:@"openApp://"]){
        [UIApplication.sharedApplication openURL:navigationAction.request.URL options:@{} completionHandler:^(BOOL success) {
            if(!success){
                NSString* strMessage = @"没有安装该应用";
                [weakSelf alertMessage:strMessage];
            }
        }];
       decisionHandler(WKNavigationActionPolicyCancel);
        return;
    }
    
    decisionHandler(WKNavigationActionPolicyAllow);
    
}

其中WKNavigationActionPolicyCancel你处理了不用WKWebView操心了，WKNavigationActionPolicyAllow表示你不想处理让WKWebView去处理。