Ufdjrw

Is there any way I can eliminate the "null" string of an editing text brought from a JSONObject response? and just show the empty EditText.

He did it in the following way.

 if (jsonResponse.getString(DataManager.Name).equals("null")
 edtName.setText("");
 else

 edtName.setText(jsonResponse.getString(usersDataInfo.getNombre()));

 

But when the field comes with information, it enters the instruction again and removes the information.

JSON

 "ID": 23,
 "NOMBRE": null,
 "APELLIDOPATERNO": null,
 "APELLIDOMATERNO": null,
 "TELEFONO": null,
 "CELULAR": null,
 "NACIMIENTO": null,
 "SEXO": null,
 "USUARIOID": 7

Use the method isNull() to check for null value.

i.e:

if (jsonResponse.isNull("NOMBRE")) 
 edtName.setText("")
 else 
 edtName.setText(jsonResponse.getString("NOMBRE"))

or in case your returning someting, simply:

jsonResponse.isNull("CELULAR") ? (return someting) : (return another thing)

I've created a sample and for me it's working, take a look :

public class MainActivity extends AppCompatActivity 

 private EditText etEjemplo;
 @Override
 protected void onCreate(Bundle savedInstanceState) 
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);

 etEjemplo = findViewById(R.id.etEjemplo);

 String json = "n" +
 "t"ID": 23,n" +
 "t"NOMBRE": null,n" +
 "t"APELLIDOPATERNO": null,n" +
 "t"APELLIDOMATERNO": null,n" +
 "t"TELEFONO": null,n" +
 "t"CELULAR": null,n" +
 "t"NACIMIENTO": null,n" +
 "t"SEXO": null,n" +
 "t"USUARIOID": 7n" +
 "";

 try 
 JSONObject jObj = new JSONObject(json);
 String nombre = jObj.getString("NOMBRE");
 //You can use jObj.isNull("NOMBRE") instead
 if(nombre.equals("null"))
 etEjemplo.setText("");
 
 else
 etEjemplo.setText(nombre);
 
 //One line case 
 //etEjemplo.setText(nombre.equals("null") ? "" : nombre);
 //or
 //etEjemplo.setText(jObj.isNull("NOMBRE") ? "" : nombre);
 catch (JSONException e) 
 e.printStackTrace();