Android String.format（）意外崩溃

Question

I am having a strange crash/error that happened without changing anything. I am using Volley for network requests and i have a separate class with my URL end points.

I am using MY_REQUEST_URL + myparam=%s as the link and in the volley request i am using String.format(EndPoints.MY_REQUEST_URL, myparameter) and when I run this request in my app, it crashes (see the log below).

What is even stranger is that i am using the same type of requests in the same app and they all work fine except this and another one.

MyClass code:

public class MyClass extends Fragment{
// other declarations
ArrayList<JSONObject> data;
View view 

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    view = inflater.inflate(R.layout.fragment_myclass, null);

    // initializing lots of views
    data = new ArrayList<JSONObject>();
    String userid = Utils.getStringFromPreferences(getActivity(), Utils.VAR_USERID); // this is a custom method of getting from shared preferences, it is static in my custom Utils class
    getData(userid);

    return view;
  }

  //different methods

  //getData Method
   private void getData(String userid) {
    String url = String.format(EndPoints.URL_MY_REQUEST_URL, userid);
    Log.d("request url debug", url);

    StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    // Result handling

                    Log.e("data", response);
                    if (!response.equals("") || response != null) {
                        try {
                            // response handling


                        } catch (JSONException e) {
                            // e.printStackTrace();

                        }
                    } else {
                    }
                }

            }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            System.out.println("Something went wrong!");
            error.printStackTrace();

        }
    });
    stringRequest.setRetryPolicy(new DefaultRetryPolicy(
            10000,
            DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
            DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
    // Add the request to the queue - i have a custom class for this, used in every network request that works fine 
    VolleyRequestQue.getInstance(InsuitBusiness.getContext()).addToRequestQueue(stringRequest);
} 

}

This is the Endpoints class:

public class Endpoints {
public static String MY_MAIN_URL = "https://www.myweb.com/"

public static String MY_REQUEST_URL = MY_MAIN_URL + "scripts/getData.php?userid=%s"
// the rest of the class is all the same like stringname = MY_MAIN_URL + "phpscript.php?parameter=%s"

}

This is the error log:

 Caused by: java.util.MissingFormatArgumentException: Format specifier '%s'
            at java.util.Formatter.format(Formatter.java:2490)
            at java.util.Formatter.format(Formatter.java:2426)
            at java.lang.String.format(String.java:2626)
            at com.myapp.myapp.MyClass.getData(MyClass.java:1220)
            at com.myapp.myapp.MyClass$getDataAsync.doInBackground(MyClass.java:1208)
            at com.myapp.myapp.MyClass$getDataAsync.doInBackground(MyClass.java:1204)
            at android.os.AsyncTask$2.call(AsyncTask.java:304)

Answer 1

MY_MAIN_URL which was supposed to have as value: " https://www.myweb.com/ " i was mistakenly giving another value which contained "%s" and this is how i got the exception and the crash.

For future people having the same problem just make sure there aren't more "%s" in the link, Log the link in the debugger and see how it shows up.

Thanks to everyone for their time.