Android EditText + set some words in colour

问题:

I create EditText boxes dynamically, depending on what is pulled back from the database.

Ie.

            final EditText textV = new EditText(this);
            textV.setText(monEntry);

Is there anyway to set some of the text in the EditText to one colour and another bit to another without using a subString()? Thanks alot if anybody can help!

回答1:

Yes, you can have different colors in different places of the text if you are using SpannableString. Example:

SpannableString text = new SpannableString("Lorem ipsum dolor sit amet");  
final EditText textV = new EditText(this);
// make "Lorem" (characters 0 to 5) red  
textV.setSpan(new ForegroundColorSpan(Color.RED), 0, 5, 0);  
textV.setText(text, BufferType.SPANNABLE);

or you can use html code as below::

textV.setText(Html.fromHtml(html text having 1 in red 2 in green and so on));

There's a more complete example here.

Javadoc for SpannableString

回答2:

public class MainActivity extends Activity implements TextWatcher {

    EditText txt1,txt2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        txt1=(EditText) findViewById(R.id.editText1);
        txt2=(EditText) findViewById(R.id.editText2);
        txt2.setText(getResources().getString(R.string.str));
        txt1.addTextChangedListener(this);

    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count,
            int after) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        // TODO Auto-generated method stub
         String string = getResources().getString(R.string.str);
        // String string1=string.toLowerCase();
         try{
                String withHighLightedText = string.replaceAll(s.toString(), "<font color='yellow'>"+s.toString()+"</font>");
                txt2.setText(Html.fromHtml(withHighLightedText), TextView.BufferType.SPANNABLE);
                }catch(Exception ex){

                }

    }

    @Override
    public void afterTextChanged(Editable s) {
        // TODO Auto-generated method stub

    }
}