Is there any way to change color of sub-string programmatically in Android?

Question

I have a string resource

<string name="redesign_password_pattern">Your password must contain the following:\n\t&#8226; A minimum of 8 characters\n\t&#8226; At least 1 capital letter\n\t&#8226; At least 1 small letter\n\t&#8226; At least 1 number\n\t&#8226; At least 1 of the following special characters: !, @, #, $, *</string>

When i set this string to a TextView, it looks like this

If the password entered by user contains a number, i want to change color of "At least 1 number" from the text and so on.

can it be achieved this way or do i need to follow another way?

So far, i tried the following way, but i don't know how to write start and end values for the string resource.

SpannableString spannableString =  new SpannableString(getString(R.string.redesign_password_pattern));
spannableString.setSpan(new ForegroundColorSpan(GREEN), 101, 130, 0);
pswFormat.setText(spannableString);

And i don't want to write 6 different TextViews. Please help me to find a way.

Thanks in advance.

Maybe [this](https://stackoverflow.com/questions/4032676/how-can-i-change-the-color-of-a-part-of-a-textview) can help you — Tamir Abutbul, Apr 19 '19 at 14:27

Sultan Mahmud · Answer 1 · 2019-04-19T15:54:23.400

0

Try this way:

<string name="hello_world_test">Your password must contain the following:\n\t&#8226;
  <font color= "#F44336" name="1">A minimum of 8 characters\n\t&#8226;</font>
  <font color= "#008577" name="2">At least 1 capital letter\n\t&#8226; </font>
  <font color= "#CDDC39" name="3">At least 1 small letter\n\t&#8226;</font>
  <font color= "#008577" name="4">At least 1 number\n\t&#8226;</font>
  <font color="#9C27B0"  name="5">At least 1 of the following special characters: !, @, #, $, *</font></string>

tv.setText(Html.fromHtml(getResources().getString(R.string.hello_world_test)));

edited Apr 19 '19 at 15:54

answered Apr 19 '19 at 14:30

Sultan Mahmud

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I wanted to change the color of sub-string programmatically. – Praveen Apr 19 '19 at 15:36
then put the string resource on local string variable and call it like tv.setText(Html.fromHtml(source); – Sultan Mahmud Apr 19 '19 at 15:40
Please understand the problem first. – Praveen Apr 19 '19 at 15:42
@Praveen Check my updated code. I think now you can understand. – Sultan Mahmud Apr 19 '19 at 15:55

score 0 · Answer 2 · answered Apr 19 '19 at 14:35

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Yes, there is another way. Format the String with html's font-color property then pass it to the method Html.fromHtml(text)

 String text = "<font color=#cc0029>A minimum of 8 characters</font> <font color=#ffcc00>At least 1 capital letter</font>";
 yourtextview.setText(Html.fromHtml(text));

answered Apr 19 '19 at 14:35

Ivan Abakumov

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I wanted to change the color programmatically. – Praveen Apr 19 '19 at 15:37

score 0 · Accepted Answer · answered Apr 19 '19 at 14:37

0

Your code is fine, you are only missing the start and end and the color:

spannableString.setSpan(new ForegroundColorSpan(Color.GREEN), 130, 147, 0);

answered Apr 19 '19 at 14:37

forpas

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Is there any way to change color of sub-string programmatically in Android?

3 Answers3