How do I update my static context value saved from shared preferences?

Question

I am planning to implement an easter egg to change my API through an alertdialog, but currently after I change my url endpoint and submit it it saves it in shared preferences, but next time i save it, it does save it in shared preferences ,but doesn't reflect in the app. How do I make it such that every single time i change it ,it applies to my apiendpoint as expected:

Alertdialog which triggers on 5 taps:

    myimage.setOnClickListener(new View.OnClickListener() {
                  @Override
                  public void onClick(View v) {
                      long time= System.currentTimeMillis();


                      //if it is the first time, or if it has been more than 3 seconds since the first tap ( so it is like a new try), we reset everything
                      if (startMillis==0 || (time-startMillis> 3000) ) {
                          startMillis=time;
                          count=1;
                      }
                      //it is not the first, and it has been  less than 3 seconds since the first
                      else{ //  time-startMillis< 3000
                          count++;
                      }

                      if (count==5) {
                          final AlertDialog dialogBuilder = new AlertDialog.Builder(LoginActivity.this).create();
                          LayoutInflater inflater = LoginActivity.this.getLayoutInflater();
                          View dialogView = inflater.inflate(R.layout.custom_dialog, null);

                          final EditText editText = (EditText) dialogView.findViewById(R.id.edt_comment);
                          Button submitButton = (Button) dialogView.findViewById(R.id.buttonSubmit);
                          Button cancelButton = (Button) dialogView.findViewById(R.id.buttonCancel);
                          Button resetButton = (Button) dialogView.findViewById(R.id.buttonReset);
                          editText.setTextColor(getResources().getColor(R.color.black,null));
                          if(SharedPreferencesHelper.getSomeStringValue(getApplicationContext()) != null) {
                              editText.setText( SharedPreferencesHelper.getSomeStringValue(getApplicationContext()));
                          }

                          cancelButton.setOnClickListener(new View.OnClickListener() {
                              @Override
                              public void onClick(View view) {

                                  dialogBuilder.dismiss();
                              }
                          });
                          submitButton.setOnClickListener(new View.OnClickListener() {
                              @Override
                              public void onClick(View view) {
                                  //save the endpoint value in shared preferences
SharedPreferencesHelper.setSomeStringValue(getApplicationContext(),editText.getText().toString());


                                  dialogBuilder.dismiss();
                              }
                          });
                          resetButton.setOnClickListener(new View.OnClickListener() {
                              @Override
                              public void onClick(View v) {
                                  SharedPreferencesHelper.setSomeStringValue(getApplicationContext(),BuildConfig.BASE_URL);

                                  dialogBuilder.dismiss();

                              }
                          });

                          dialogBuilder.setView(dialogView);
                          dialogBuilder.setCanceledOnTouchOutside(false);
                          dialogBuilder.show();
                      }
                  }



        });

Here's my sharedpreferenceshelper:

public class SharedPreferencesHelper {

    private static final String APP_SETTINGS = "APP_SETTINGS";


    // properties
    private static final String SOME_STRING_VALUE = "SOME_STRING_VALUE";
    // other properties...


    private SharedPreferencesHelper() {}

    private static SharedPreferences getSharedPreferences(Context context) {
        return context.getSharedPreferences(APP_SETTINGS, Context.MODE_PRIVATE);
    }

    public static String getSomeStringValue(Context context) {
        return getSharedPreferences(context).getString(SOME_STRING_VALUE , null);
    }

    public static void setSomeStringValue(Context context, String newValue) {
        final SharedPreferences.Editor editor = getSharedPreferences(context).edit();
        editor.putString(SOME_STRING_VALUE , newValue);
        editor.apply();
    }

}

Finally, here's my Apiendpoint class:

final class ApiEndPoint {
 private static String NEW_URL = SharedPreferencesHelper.getSomeStringValue(MyApp.getAppContext());
    static final String ENDPOINT_SERVER_LOGIN = NEW_URL
            + "/service-myverification-link/v1/link/verify";

    private ApiEndPoint() {
        // This class is not publicly instantiable
    }
}

For the code above, I was wondering how do i make the NEW_URL link more dynamic, seems like its sticking to the value saved first time and does not change after. I need to keep this link static due to :

 @Override
    public Single<LoginResponse> doServerLoginApiCall(LoginRequest request) {
            return Rx2AndroidNetworking.post(ApiEndPoint.ENDPOINT_SERVER_LOGIN)
                    .doNotCacheResponse()
                    .addBodyParameter(request)
                    .build()
                    .getObjectSingle(LoginResponse.class);

    }

Any idea, how I can fix this so I can update the link in NEW_URL every single time that it sticks to the new value instead of the value stored the first time?

try editor.commit(), maybe you are saving and retrieving values very fast, hence it is not properly being saved inside the preference file. — Abdul Aziz, Apr 26 '19 at 11:48

score 0 · Answer 1 · answered Apr 20 '19 at 17:27

0

You will need to use the onSharedPreferenceChangeListener

 SharedPreferencesHelper.getSharedPreferences(context).registerOnSharedPreferenceChangeListener(
  new SharedPreferences.OnSharedPreferenceChangeListener() {
    public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
       if(key.equals("SOME_STRING_VALUE")){
          NEW_URL = prefs.getString("SOME_STRING_VALUE" , null);
       }
  }
});

answered Apr 20 '19 at 17:27

Tiago Oliveira

1,582
1
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where do i place this, in my activity onresume? i have new_url only defined in apiendpoint, how would it work? – Apr 21 '19 at 00:37

score 0 · Answer 2 · answered Apr 26 '19 at 12:59

Why don't you send the Url as a parameter every time:

@Override
    public Single<LoginResponse> doServerLoginApiCall(LoginRequest request, String url) {
            return Rx2AndroidNetworking.post(url)
                    .doNotCacheResponse()
                    .addBodyParameter(request)
                    .build()
                    .getObjectSingle(LoginResponse.class);
    }

Method call:

doServerLoginApiCall(request, SharedPreferencesHelper.getSomeStringValue(getApplicationContext()) + ENDPOINT);

How do I update my static context value saved from shared preferences?

2 Answers2