Broken RU encoding in specific document

[ava5412]

Steps:
0. get ComPdf Android 2.2.2

1. open MO issue RU text.pdf
2. review texts

Actual result
RU letters not displayed

Expected result
like

Note
(probably, it works in ComPdf Android 2.0.1...)

[youna12345]

Hi @ava5412 , sorry for the late reply. We truly appreciate your feedback.

The sample document uses the Times New Roman font series, but since the PDF file does not embed this font and the mobile system does not have it pre-installed, the related text cannot be displayed properly. This issue also exists in version v2.0.1.

To resolve this, you can manually import the Times New Roman font and set it as the default font by referring to the following code. We sincerely apologize for the inconvenience and will continue to optimize font support.

// First, copy the Times New Roman.ttf file to the filesDir directory
String ttfPath = new File(getFilesDir(), "Times New Roman.ttf").getAbsolutePath();  
CPDFSdk.setDefaultFontPath(this, ttfPath);  
CPDFSdk.useDefaultFont(true);  
CPDFSdk.init(this, "your compdfkit license", true);

[youna12345]

Hi @ava5412 , I would like to ask if there is a solution to your problem. If it is solved, I will close the issue.

[Rumyantsev-office]

Hi @youna12345
This solution creates other problems:

1. Times New Roman font cannot be used freely due to license.
2. After applying these solutions, compatibility with PDF test files is broken.
3. The file cannot be fully saved for further printing using saveFontSubset, some lines are lost.

[youna12345]

Hi @ava5412 , sorry for the late reply. We truly appreciate your feedback.
We are investigating this issue and will contact you as soon as there is progress.

[youna12345]

Hello @Rumyantsev-office , I sincerely apologize for the long delay in responding.
Regarding the issue where Russian text does not display properly in the PDF file you provided — currently, the only solution remains the one we previously suggested. Using any of the following font files should allow Russian text to render correctly:

• Arial.ttf
• Times New Roman.ttf
• DroidSansFallback.ttf

Here is a sample implementation:

// Example: using Times New Roman font
String ttfPath = new File(getFilesDir(), "Times New Roman.ttf").getAbsolutePath();  
CPDFSdk.setDefaultFontPath(this, ttfPath);  
CPDFSdk.useDefaultFont(true);  
CPDFSdk.init(this, "your compdfkit license", true);

Additionally, in my testing, when fontSubset = true is set during the save() operation, the Russian text in the saved document displays correctly even without explicitly calling setDefaultFontPath or useDefaultFont.

fonts.zip