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I want to put logged username in text view in navigationview header in MainActivity but the app crachs i did in layout and it works but in the header of navigationview it crachs how to solve the problem?

What I have tried:

I tried this code:

//Login button 
public void openMainActivity() {
		Intent intent = new Intent(this, MainActivity.class);
		 intent.putExtra("username", txt_username.getText().toString());

MainActivity :
// Hello user textview
    txt_welcomeUser = (TextView) findViewById(;
    Bundle extras = getIntent().getExtras();
    String username = null;
    if(extras != null){
        username = extras.getString("username");
        txt_welcomeUser.setText("WELCOME: " + username);
Updated 21-May-23 15:34pm
Richard MacCutchan 12-May-23 4:16am    
The same code in both parts of your question but no details of what actually happens in the main activity. You need to use the debugger to see what results you are getting in both sections of code.
brahim farhat (AAD) 16-May-23 20:02pm    
What happend the App crachs
brahim farhat (AAD) 16-May-23 20:03pm    
It works in layout but in header of navigationview it crachs
brahim farhat (AAD) 16-May-23 20:08pm    
I edited the question
Richard MacCutchan 17-May-23 4:02am    
That is the same code as in the original question, and we still have no idea what happens when you riun it. As I suggested four days ago, you need to use the debugger to see what is going on. At a wild guess it is possible that txt_username has never been initialised.

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