android - Is there any example about Spanned and Spannable text

Question

I'm struggling with using EditText and Spannable text object, These days, I've read API documents around ten times, even I'm not certain that I understand correctly. So I'm looking for a kind of example which show me how to utilize EditText and Spannable.

Answer 1

Since you don't specify what you can't grasp from the API it's hard to answer your questions (short answer: rewrite your question to a specific questions rather than a general one).

A typical Spannable-example is something like this to turn selected text in an EditText into Italic:

Spannable str = mBodyText.getText(); 
if(mBodyText.getSelectionEnd() > mBodyText.getSelectionStart()) 
  str.setSpan(new StyleSpan(android.graphics.Typeface.ITALIC),  
                      mBodyText.getSelectionStart(), mBodyText.getSelectionEnd(),  
                      Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
else
  str.setSpan(new StyleSpan(android.graphics.Typeface.ITALIC),
              mBodyText.getSelectionEnd(),
              mBodyText.getSelectionStart(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

This is cut and pasted from something else, so your direct-pastability might have suffered, but it at least shows a working example of a Spannable (in this case a StyleSpan). In the API you can find the other types of Spans (notably ImageSpan, which is a common questions among newly converted droiders).