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Different font size of strings in the same TextView

Posted by: admin November 29, 2017 Leave a comment

Questions:

I have a textView inside with a number (variable) and a string, how can I give the number one size larger than the string?
the code:

TextView size = (TextView)convertView.findViewById(R.id.privarea_list_size);
if (ls.numProducts != null) {
    size.setText(ls.numProducts + " " + mContext.getString(R.string.products));
}

I want ls.numproducts has a size different from the rest of the text. How to do?

Answers:

Use a Spannable String

 String s= "Hello Everyone";
 SpannableString ss1=  new SpannableString(s);
 ss1.setSpan(new RelativeSizeSpan(2f), 0,5, 0); // set size
 ss1.setSpan(new ForegroundColorSpan(Color.RED), 0, 5, 0);// set color
 TextView tv= (TextView) findViewById(R.id.textview);
 tv.setText(ss1); 

Snap shot

enter image description here

You can split string using space and add span to the string you require.

 String s= "Hello Everyone";  
 String[] each = s.split(" ");

Now apply span to the string and add the same to textview.

Questions:
Answers:

Just in case you’re wondering how you can set multiple different sizes in the same textview, but using an absolute size and not a relative one, you can achieve that using AbsoluteSpan instead of a RelativeSpan.

Just get the dimension in pixels of the desired text size

int textSize1 = getResources().getDimensionPixelSize(R.dimen.text_size_1);
int textSize2 = getResources().getDimensionPixelSize(R.dimen.text_size_2);

and then create a new AbsoluteSpan based on the text

String text1 = "Hi";
String text2 = "there";

SpannableString span1 = new SpannableString(text1);
span1.setSpan(new AbsoluteSizeSpan(textSize1), 0, text1.length(), SPAN_INCLUSIVE_INCLUSIVE);

SpannableString span2 = new SpannableString(text2);
span2.setSpan(new AbsoluteSizeSpan(textSize2), 0, text2.length(), SPAN_INCLUSIVE_INCLUSIVE);

// let's put both spans together with a separator and all
CharSequence finalText = TextUtils.concat(span1, " ", span2);

Questions:
Answers:

You can get this done using html string and setting the html to Textview using
txtView.setText(Html.fromHtml("Your html string here"));

For example :

txtView.setText(Html.fromHtml("<html><body><font size=5 color=red>Hello </font> World </body><html>"));`

Questions:
Answers:

Try spannableStringbuilder. Using this we can create string with multiple font sizes.

Questions:
Answers:

Method 1

public static void increaseFontSizeForPath(Spannable spannable, String path, float increaseTime) {
    int startIndexOfPath = spannable.toString().indexOf(path);
    spannable.setSpan(new RelativeSizeSpan(increaseTime), startIndexOfPath,
            startIndexOfPath + path.length(), 0);
}

using

Utils.increaseFontSizeForPath(spannable, "big", 3); // make "big" text bigger 3 time than normal text

enter image description here

Method 2

public static void setFontSizeForPath(Spannable spannable, String path, int fontSizeInPixel) {
    int startIndexOfPath = spannable.toString().indexOf(path);
    spannable.setSpan(new AbsoluteSizeSpan(fontSizeInPixel), startIndexOfPath,
            startIndexOfPath + path.length(), 0);
}

using

Utils.setFontSizeForPath(spannable, "big", (int) textView.getTextSize() + 20); // make "big" text bigger 20px than normal text

enter image description here