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Quick guide to quick autocomplete textview

Tue, 12/20/2011 - 14:55 | by balazs.nemeth
SDK Version: 
M3

This demo shows how to speed up the original autocomplete textview assuming that we can work with ordered data.

Let's prepare a simple test environment, which demostrate the difference between the two versions. Then let's generate a few thousand test data, and create two textviews from which we will speed up the second one.

  1. public class Main extends Activity {
  2.         AutoCompleteTextView mAutoCompleteTextViewOriginal;
  3.         AutoCompleteTextView mAutoCompleteTextViewQuick;
  4.  
  5.         @Override
  6.         public void onCreate(Bundle savedInstanceState) {
  7.                 super.onCreate(savedInstanceState);
  8.                 setContentView(R.layout.main);
  9.                
  10.                 String[] values =  createLongSortedStringArray(4);
  11.        
  12.                 mAutoCompleteTextViewOriginal = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextViewOriginal);
  13.                 ArrayAdapter<String> originalAdapter = new ArrayAdapter<String>(this, R.layout.autocomplete_listitem, values);
  14.                 mAutoCompleteTextViewOriginal.setAdapter(originalAdapter);

How to draw multiline text to canvas easily

Tue, 08/16/2011 - 08:41 | by tamas
SDK Version: 
M3

There are situations where you have to use a Canvas. What do you do if you have more text than you can properly display?
The problem is, that if you want multiline text on canvas, with the drawText method, you would have to measure how much space a single line of text would take up, and also compare it to the width of the screen, and draw each line separately.
Read more to check my solution.

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