Problem with the display of Cyrillic characters in a pdf with lib itext

Question

In the PDF document, you need to display the text in Russian. Many ways were used, but the result is the same - instead of letters "krazyabry". The text in English is displayed as intended.

Used:

• Android JDK + Kotlin

• iText 7.2.5

Name of font assets is const

const val fontName = "roboto.ttf"

Screenshot of assets folder

The font is added at creation

return@map PdfTextFormField
  .createText(outputDoc, it.wrapper, it.type.fieldName, it.v, font, 10f)
  .setJustification(1)

Output

Try #1

protected val font: PdfFont by lazy {
  val asset = context.assets.open(fontName).readBytes()
  return@lazy PdfFontFactory.createFont(asset, PdfEncodings.IDENTITY_H, PdfFontFactory.EmbeddingStrategy.FORCE_EMBEDDED)
}

Result: no crash, no russian symbols

Try #2

protected val font: PdfFont by lazy {
    val asset = context.assets.open(fontName).readBytes()
    return@lazy PdfFontFactory.createFont(asset, PdfEncodings.CP1250, PdfFontFactory.EmbeddingStrategy.FORCE_EMBEDDED)
  }

Result: no crash, no russian symbols

Try #3

protected val font: PdfFont by lazy {
    val asset = context.assets.open(fontName).readBytes()
    return@lazy PdfFontFactory.createFont(asset, "Cp1251", PdfFontFactory.EmbeddingStrategy.FORCE_EMBEDDED)
  }

Result: no crash, no russian symbols

Try #4

protected val font: PdfFont by lazy {
    return@lazy PdfFontFactory.createFont("/assets/arial.ttf", PdfEncodings.IDENTITY_H, PdfFontFactory.EmbeddingStrategy.FORCE_EMBEDDED)
}

Result: no crash, no russian symbols

Try #5

protected val font: PdfFont by lazy {
    return@lazy PdfFontFactory.createFont("/assets/arial.ttf", PdfEncodings.IDENTITY_H, PdfFontFactory.EmbeddingStrategy.FORCE_EMBEDDED)
}

Result: no crash, no russian symbols

Try #6

protected val font: PdfFont by lazy {
    return@lazy PdfFontFactory.createFont("/assets/arial.ttf", "Cp1251", PdfFontFactory.EmbeddingStrategy.FORCE_EMBEDDED)
}

Result: no crash, no russian symbols

Try #7

protected val font: PdfFont by lazy {
        return@lazy PdfFontFactory.createFont( "/system/fonts/Comic.ttf", PdfEncodings.UNICODE_BIG_UNMARKED, PdfFontFactory.EmbeddingStrategy.FORCE_EMBEDDED)
}

Result: java.io.IOException: /system/fonts/Comic.ttf not found as file or resource

Try #8

protected val font: PdfFont by lazy {
        return@lazy PdfFontFactory.createFont( "/system/fonts/Roboto-Regular.ttf", PdfEncodings.IDENTITY_H, PdfFontFactory.EmbeddingStrategy.FORCE_EMBEDDED)
}

Result: no crash, no russian symbols

Try with encodoing: UTF8, UNICODBIG (error), UNICODEBIG_UNMARKED (error)
error: java.lang.ArrayIndexOutOfBoundsException: length=128; index=128

Answer 1

Have you tried this? You need a font that has the relevant glyphs and arialuni.ttf is one of them:

protected val font: PdfFont by lazy {
    return@lazy PdfFontFactory.createFont("/assets/arialuni.ttf", PdfEncodings.IDENTITY_H, PdfFontFactory.EmbeddingStrategy.FORCE_EMBEDDED)
}

Just make sure to find the right font file (.ttf file)