Error "Cannot resolve Symbol editText" in Android Studio MyFirstApp tutorial

user_4360527 0
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I'm new to Android Studio and Android development. So I was following the tutorial given by developer.android.com and I'm having an error in this line : EditText editText = (EditText) findViewById(R.id.editText); The error is saying that : cannot find symbol variable editText .

This is part of my code :

import android.os.Bundle;
import android.widget.EditText;


public class MainActivity extends AppCompatActivity {
   
    public void sendMessage(View view){
        EditText editText = (EditText) findViewById(R.id.editText);
        String message = editText.getText().toString();

    }
}
mobile-application android
6 Answers

I had the same issue as you OP. I went back to the activity_main.xml and noticed the ID was different somehow in the top right corner under attributes for the Text box. Changed the ID back and reran the app and no issues/

user_146027240

The reason is that you need to write editTextTextPersonName2 instead of editText to match the definition in activity_main.xml:

android:id="@+id/editTextTextPersonName2"

The code shall thus be as follows:

public void sendMessage(View view) 
{
    Intent intent = new Intent(this, DisplayMessageActivity.class);
    EditText editText = (EditText) findViewById(R.id.editTextTextPersonName2);
    String message = editText.getText().toString();
    intent.putExtra(EXTRA_MESSAGE, message);
    startActivity(intent);
}
user_146080760

R.id.editTextTextPersonName2 cause problem. You can try R.id.editText and follow the recommendation mentioned by others by adding android:id="@+id/editText" in activity_main.xml

user_146541320
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