EditText.getText().toString() error [duplicate]

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EditText.getText().toString() error [duplicate]



This question already has an answer here:



there is this code I'm working with, and the log shows that there is an error that terminates the app like


Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference
at com.example.amuna.project1.addWord.confirmBtnClicked(addWord.java:25)



and the code is


import android.content.SharedPreferences;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class addWord extends AppCompatActivity
EditText wordEdit, defEdit;
Button confirmButton;
@Override
public void onCreate(Bundle savedInstanceState)
wordEdit=(EditText)findViewById(R.id.wordAdd);
defEdit=(EditText)findViewById(R.id.defAdd);
confirmButton=findViewById(R.id.confirmBtn);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_word);

public void confirmBtnClicked(View v)
SharedPreferences pref = getSharedPreferences("pref", MODE_PRIVATE);
SharedPreferences.Editor editor = pref.edit();
String newWord = wordEdit.getText().toString();
String newDef = defEdit.getText().toString();
editor.putString("word", newWord);
editor.putString("def", newDef);
editor.commit();





please help! It's String newWord = wordEdit.getText().toString(); that has an error, and please notice me if I have anything more wrong. Thanks!



This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.





Did you debug and verify that wordEdit in fact is being initialized to a non null reference?
– Tim Biegeleisen
Aug 6 at 2:08


wordEdit





you need to bind your views after setContentView(..)
– MRah
Aug 6 at 2:09




1 Answer
1



You should set the content view, by calling setContentView(R.layout.activity_add_word);, before wordEdit=(EditText)findViewById(R.id.wordAdd);. Change the code as follows:


setContentView(R.layout.activity_add_word);


wordEdit=(EditText)findViewById(R.id.wordAdd);


@Override
public void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_word);
wordEdit=(EditText)findViewById(R.id.wordAdd);
defEdit=(EditText)findViewById(R.id.defAdd);
confirmButton=findViewById(R.id.confirmBtn);






Okay, I'll try that!
– 이정민
Aug 6 at 2:15





Thanks! I think it worked! The app doesn't quit any more!
– 이정민
Aug 6 at 2:17





@이정민 great! Remember to mark answer as accepted so that others can benefit too
– Sagar
Aug 6 at 2:42





And one more thing, remember to call super just after the method name.
– meditat
Aug 6 at 2:45


super





Ok, I just marked your answer and Thank you again! It works very well!
– 이정민
Aug 6 at 3:25


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