Android ApiDemos example resolution (99): Views-& gt; Auto Complete-& gt

In this example. screen Top, 2. screen Bottom, 3. scroll introduces the usage of AutoCompleteTextView. The difference is that the Layout position in AutoCompleteTextView is different. You can see that the AutoCompleteTextView automatically selects a proper position for the prompt Dialog Box Based on its location to be displayed on the screen.

When Google is used for search, the Google search item will automatically give related prompts as the user inputs. The AutoCompleteTextView class provides similar functions. When you input AutoCompleteTextView, autoCompleteTextView displays a prompt list for users to choose from. You can use the Back key to cancel this prompt box at any time.

The content of the prompt box comes from a Data Adapter. You can set threshold to indicate that the prompt box appears after the user has entered more than a few characters.

In this example, add a country name in the prompt box:

[Java]
ArrayAdapter <String> adapter = new ArrayAdapter <String> (this,
Android. R. layout. simple_dropdown_item_1line,
COUNTRIES );
AutoCompleteTextView textView
= (AutoCompleteTextView) findViewById (R. id. edit );
TextView. setAdapter (adapter );
 
...
Static final String [] COUNTRIES = new String [] {
"Afghanistan", "Albania", "Algeria", "American Samoa ",
"Andorra", "Angola", "Anguilla", "Antarctica ",
"Antigua and Barbuda", "Argentina "..

ArrayAdapter <String> adapter = new ArrayAdapter <String> (this,
Android. R. layout. simple_dropdown_item_1line,
COUNTRIES );
AutoCompleteTextView textView
= (AutoCompleteTextView) findViewById (R. id. edit );
TextView. setAdapter (adapter );

...
Static final String [] COUNTRIES = new String [] {
"Afghanistan", "Albania", "Algeria", "American Samoa ",
"Andorra", "Angola", "Anguilla", "Antarctica ",
"Antigua and Barbuda", "Argentina "..

In this example, the AutoCompleteTextView is located at the top of the screen. You can see the position displayed in the prompt box:

 
Author: mapdigit