uri.getHost() can be null if the user clicks on mailto: links and phone numbers

app/src/main/java/com/example/app/MyWebViewClient.java

@@ -9,7 +9,8 @@ public class MyWebViewClient extends WebViewClient {
 
     @Override
     public boolean shouldOverrideUrlLoading(WebView view, String url) {
-        if (Uri.parse(url).getHost().endsWith("example.com")) {
+        Uri uri = Uri.parse(url);
+        if (uri.getHost() != null && uri.getHost().contains("example.com")) {
             return false;
         }