Android: NullPointerException: Attempt to invoke virtual method 'boolean

Question

I am getting the following error:

*E/AndroidRuntime: FATAL EXCEPTION: main
     Process: xxx.mxxxa.xxx, PID: 10610
    java.lang.NullPointerException: Attempt to invoke virtual method 'boolean    java.lang.String.contains(java.lang.CharSequence)' on a null object reference*

on the following lines:

public void onLoadResource (WebView view, String url) {

                if (datingView.getUrl().contains("messages.php") && datingView.getUrl().contains("messages.php" +
                        "")){
                    bannerReklam.setVisibility(View.GONE);
                }else if (datingView.getUrl().contains("upgrade.php") && datingView.getUrl().contains("upgrade.php" +
                        "")){
                    bannerReklam.setVisibility(View.GONE);
                }else if (datingView.getUrl().contains("index.php") && datingView.getUrl().contains("index.php" +
                        "")){
                    bannerReklam.setVisibility(View.GONE);
                }else if (datingView.getUrl().contains("join.php") && datingView.getUrl().contains("join.php" +
                        "") ){
                    bannerReklam.setVisibility(View.GONE);

                }else{

                    bannerReklam.setVisibility(View.VISIBLE);
                }

                // if url contains string androidexample
                // Then show progress  Dialog
                if (progressDialog == null && url.contains("instasquare")
                        ) {

                    // in standard case YourActivity.this
                    progressDialog = new ProgressDialog(arkadasBulMain.this);
                    progressDialog.setMessage("Loading...");
                    progressDialog.show();
                }
            }

This problem causes the application to stop. This error occurs for versions below android 9.0.

And what about the error is unclear? – Tyler Nov 13 '19 at 18:49 — Tyler, Nov 13 '19 at 18:49

score 0 · Accepted Answer · answered Nov 13 '19 at 18:52

0

In some cases datingView.getUrl() return null. First try to check null and then try to search item using contains. For Example:

String datingUrl = datingView.getUrl();

if(datingUrl != null && datingUrl.contains("messages.php"))

answered Nov 13 '19 at 18:52

Md. Asaduzzaman

14,963
2
34
46

do I need to make this query for each row? – enver K Nov 14 '19 at 06:30
No, first check null and if it is null then skip rest of the operation – Md. Asaduzzaman Nov 14 '19 at 08:41

Android: NullPointerException: Attempt to invoke virtual method 'boolean

1 Answers1