CODEWITHSUNDEEP
androidxmlstring-formatting
Thomas W Chen
Thomas W Chen

Reputation: 423

Bold characters in string.xml are not shown on screen

In my string.xml file, I have something like this:

<string name="example_string"><b>This</b> is a <b>%1$s</b></string>

And then I placed it into a TextView:

textView.setText(getString(R.string.example_string, "good question"));

The "good question" argument that I passed to the getString() method is not shown in bold. Even the word "This" is not shown in bold! What's the reason for this and how to solve it?

=========================================================================

I know how to use Html.fromHtml(), but this method does not support inserting a string to the place holder that I have defined in the string resource. If you are trying to tell me that Html.fromHtml() exists, please DO NOT REPLY...

Upvotes: 15

Views: 13665

Answers (7)

MSI Abu Zafar Newton
MSI Abu Zafar Newton

Reputation: 682

In kotlin:
binding.titleTextView.text = HtmlCompat.fromHtml("This is a " + "<b>" + "your_string" + "</b>",HtmlCompat.FROM_HTML_MODE_LEGACY)

Upvotes: 0

j2emanue
j2emanue

Reputation: 62549

i've had success using getText instead of getString. It seems to maintain styling.

from the docs:

You can use either getString(int) or getText(int) to retrieve a string. getText(int) retains any rich text styling applied to the string.

Upvotes: 11

Thomas W Chen
Thomas W Chen

Reputation: 423

So after a day of search, I found the desired answer on Android Developers website! The Link to the page is here: https://developer.android.com/guide/topics/resources/string-resource.html

Sometimes you may want to create a styled text resource that is also used as a format string. Normally, this won't work because the String.format(String, Object...) method will strip all the style information from the string. The work-around to this is to write the HTML tags with escaped entities, which are then recovered with fromHtml(String), after the formatting takes place.

Basicaly, the change that I would make based on my original question is to replace the bracket "<" with the HTML tag for that, which is "&lt" + ";" (Type them together in your xml file! I had to separate them because StackOverflow will diplay the tag as the bracket itself.) For more detailed explanation, please see the Styling with HTML markup section from the website that I posted above.

Upvotes: 25

BarmanInfo
BarmanInfo

Reputation: 392

use this... it will working.

/**
 * Makes a substring of a string bold.
 * @param text          Full text
 * @param textToBold    Text you want to make bold
 * @return              String with bold substring
 */

public static SpannableStringBuilder makeSectionOfTextBold(String text, String textToBold){

    SpannableStringBuilder builder=new SpannableStringBuilder();

    if(textToBold.length() > 0 && !textToBold.trim().equals("")){

        //for counting start/end indexes
        String testText = text.toLowerCase(Locale.US);
        String testTextToBold = textToBold.toLowerCase(Locale.US);
        int startingIndex = testText.indexOf(testTextToBold);
        int endingIndex = startingIndex + testTextToBold.length();
        //for counting start/end indexes

        if(startingIndex < 0 || endingIndex <0){
            return builder.append(text);
        }
        else if(startingIndex >= 0 && endingIndex >=0){

            builder.append(text);
            builder.setSpan(new StyleSpan(Typeface.BOLD), startingIndex, endingIndex, 0);
        }
    }else{
        return builder.append(text);
    }

    return builder;

Upvotes: -1

biddulph.r
biddulph.r

Reputation: 5266

You need to format the text using Html.fromHtml or using a SpannableString.

Html.fromHtml example:

textView.setText(Html.fromHtml(getString(R.string.example_string, "good question")));

Edit:

If you're having trouble passing the tags through, its because it needs to be escaped by CDATA.

eg. <string name="example_string">This is a <![CDATA[<b>%1$s</b>]]></string>

Upvotes: 7

Vinoth
Vinoth

Reputation: 9754

Do like this below

String boldText = "Hello"+"<b>" + "StackOverflow" + "</b>";
textView.setText(Html.fromHtml(boldText));

Now your text look like this : Hello StackOverflow

See this link

Upvotes: 1

Uttam Panchasara
Uttam Panchasara

Reputation: 5865

Try this ..

String myString = "This is a " + "<b>" + "your_string" + "</b>"; 
textview.setText(Html.fromHtml(myString));

for more see here

Upvotes: 1

Related Questions