How to make a edittext box in a dialog

Question

I am trying to make a edittext box in a dialog box for entering a password. and when I am doing I am not able to do. I am a beginner in it. Please help me in this.

Answer 1

Use Activtiy Context

Replace this

  final EditText input = new EditText(this);

By

  final EditText input = new EditText(MainActivity.this);  
  LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
                        LinearLayout.LayoutParams.MATCH_PARENT,
                        LinearLayout.LayoutParams.MATCH_PARENT);
  input.setLayoutParams(lp);
  alertDialog.setView(input); // uncomment this line