final FrameLayout fl = new FrameLayout(Main.this);
final EditText input = new EditText(Main.this);				 
input.setGravity(Gravity.CENTER);
fl.addView(input, new FrameLayout.LayoutParams(FrameLayout.LayoutParams.FILL_PARENT, FrameLayout.LayoutParams.WRAP_CONTENT));
				input.setText("DefaultMSG");
			input.setOnClickListener(new OnClickListener(){
 
				@Override
				public void onClick(View v) {
 
					if (input.getText().toString().compareTo("Anonymous")==0)
		                {
		                    input.setText("");//here we set text to empty if user tap on the EditText and want 
to modify the text 
 
		                }
 
 
				}});
 
 
 
 
				AlertDialog.Builder builder = new AlertDialog.Builder(Main.this);
//building the custom AlertDialog
 
				builder.setView(fl)
 
				        .setTitle("Enter your name: ")
 
				        .setPositiveButton("OK", new DialogInterface.OnClickListener(){
 
				                @Override
 
				                public void onClick(DialogInterface d, int which) {
				 Intent q=new Intent(Main.this,SinglePlayer.class);
 
				 q.putExtra("keyName",input.getText().toString());
				 startActivity(q); //here i have sent to the next Activity the value that user just entered in the EditText field, and also i have lunched that Activity
				                        d.dismiss();
 
 
 
				                }
 
				        })
 
				        .setNegativeButton("Cancel", new DialogInterface.OnClickListener(){
 
				                @Override
 
				                public void onClick(DialogInterface d, int which) {
 
				                        d.dismiss();
 
				                }
 
				        }).create().show();
 
 
 
 
			}});