android - Getting an "Unresolved reference" error for an editText id in main activity

Question

I have just started Android Development with a basic app which takes the username and display in Toast but came across an error in the main activity. It says "Unresolved references: editName". I tried making the app again, manually importing editText widget and changing the id name but nothing works. It would be great if someone can tell me what's going wrong. ScreenShot of the code with error underlined with red..... Module build.... Project build

Answer 1

I'll show you the example in Java.

You must create a variable in your activity class

EditText editName;

then you must override the onCreate() method of the Activity class:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    editName = (EditText) findViewById(R.id.editName);
}

overriding the onCreate() you can take a reference to your EditText.