In most of the applications user wants suggestions from a ListView/Source while typing in an editable text field. For that particular thing we have two different editable TextViews which provide a drop down menu.

1. AutoCompleteTextView only offers the suggestions automatically about the whole sentence, from which user can easily choose a prefered item.

   //Initializing AutoCompleteTextView and ListView
   acTextView=(AutoCompleteTextView)findViewById(R.id.acTextView);
   lvListDisplay=(ListView)findViewById(R.id.lvListDisplay);
   
   
   //Adapter works as a communication channel between UI components and the datasource that fill data into the UI Components.
   final ArrayAdapter<String> adapter=new ArrayAdapter<String>(HomeScreenActivity.this,android.R.layout.simple_list_item_1,datasource);
       lvListDisplay.setAdapter(adapter);
       acTextView.setAdapter(adapter);
   acTextView.setThreshold(1);
   

2. MultiAutoCompleteTextView make ease to the user by offering suggestion automatically for every token used in the sentence.

   //Initialize MultiAutoCompleteTextView
   macTextView=(MultiAutoCompleteTextView)findViewById(R.id.macTextView);
   
   
   //Finally attaching adapter to the MultiAutoCompleteTextView
       macTextView.setAdapter(adapter);
       macTextView.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());
   macTextView.setThreshold(1);