findviewbyid returns null in a dialog

Question

I have a custom dialog and when I try to get the value of an EditText it returns null.

This line returns null

EditText et = (EditText)findViewById(R.id.username_edit); 

Here is the code in its entirety.

protected Dialog onCreateDialog(int id) {     switch (id) {     case DIALOG_TEXT_ENTRY:         LayoutInflater factory = LayoutInflater.from(this);         final View textEntryView = factory.inflate(R.layout.alert_dialog_text_entry, null);         return new AlertDialog.Builder(TicTacToe.this)             //.setIconAttribute(android.R.attr.alertDialogIcon)             .setTitle(getTitleText())             .setView(textEntryView)             .setPositiveButton("JOIN GAME", new DialogInterface.OnClickListener() {                 public void onClick(DialogInterface dialog, int whichButton) {                     try                     {                         EditText et = (EditText)findViewById(R.id.username_edit);                             playerName = et.getText().toString();                     }                     catch (Exception e)                     {                     }                 }             })             .create();     }     return null; } 

Answer 1

In my case: First I must call the

dialog.show(),

and only after it I was able to use

dialog.findviewById(R.id.myID).

If I missed to call the show(), than I got a null back with findViewByID.