Individual line spacing for each line

Question

Is it possible to define individual line spacings for each text line of a TextView?

Example:

TextView tv = new TextView(context);
tv.set         


        

Answer 1

Android 10 (API 29) added LineHeightSpan.Standard to do set an absolute line height. If you need backward compatibility, use the following implementation which I based on LineHeightSpan.Standard:

private static class AbsoluteHeightSpan implements LineHeightSpan {
    private final int _height;

    AbsoluteHeightSpan(int height) {
        _height = height;
    }

    @Override
    public void chooseHeight(CharSequence text, int start, int end, int spanstartv, int v, FontMetricsInt fm) {
        final int originHeight = fm.descent - fm.ascent;
        // If original height is not positive, do nothing
        if (originHeight <= 0)
            return;
        final float ratio = _height * 1.0f / originHeight;
        fm.descent = Math.round(fm.descent * ratio);
        fm.ascent = fm.descent - _height;
    }
}