Help Needed – Error in E-Book App (Spreadsheet → List View Image → PDF Viewer)

Dear Kodular Community,

I am a beginner in Kodular and I need your help to fix an issue I am facing while developing an E-Book test app.

I have a Google Spreadsheet stored in my Drive that contains the book details, cover image URL, and PDF link. My goal is:
(1) To display the book image, title, and subtitle in a List View Image & Text component.
(2) When a user clicks on a list item, the corresponding PDF should open in a preview.

I followed the steps from the YouTube tutorial below, and his app works perfectly, but mine does not. I am getting errors.

YouTube Tutorial:
(1) https://youtu.be/1D62dCzJRIU?si=Qg1-03ziQs0k2S36
(2) https://youtu.be/SNqsxq227uc?si=FrfIfuyAeGY3NqsW

Spreadsheet Link: excel_link_app - Google Sheets

Screenshots:
• Blocks


AIA File:
ebookapp.aia (1.7 MB)

List is showing correctly. But when I click on the list, blank screen opens, pdf is not showing.
Kindly help me identify what I am doing wrong. Thank you in advance!

— Santhosh

Hi dear

Welcome to the Kodular community!

Try this


and

Better explained,

For each element in the CSV list, we add element 5 to the LIST_PDF list, thus obtaining a list of all the links.

When we select an element (the first element is position 0, we add 1 because lists start from 1),
we hide the ListViewer and show the WebViewer,
while if we press the back button, we show the list and hide the WebViewer.

You can also remove the LIST_PDF variable and work like this.

I tried this sir. but still pdf is not showing.


Please help sir

Remove these blocks

immagine

Now its showing sir. Thank you so much. i need one more help. In PDF preview right top popup symbol if we click, it shows login button. If visitors login,


they can access pdf files from their drive also. is there any option to prevent them from signin. Please help.

i saw one trick in a tutorial video. but it is for single pdf. i dont know how to use it in my app which takes links from excel. please help.
video link: https://youtu.be/0Eo4WxKivtc?si=WGBm6kLaMgopg_7-

:scream:

I noticed something that makes me think this YouTuber isn’t really an expert.

Your app takes data from Google Sheets, which is basically Google’s version of “Excel” I don’t quite understand your request.

When viewing files online from Google Drive, the option to log in will always be visible.
You could try downloading them and using an extension to view the PDFs.

Sir, i dont want to give download option or any other access to visitors. they have to open app to see pdfs. thats my goal. please help

I don’t think it’s possible to view the PDF without Google’s bar (since you’re using their PDF viewer).

Add a overlay (any vertical or Horizontal) from top through animation, keep size what it need to hide that login, download, signin bar of PDF viewer, it might resolved.

Nice, inventive solution, but I think it’s legally risky because you’re hiding that the viewing service is provided by Google.

1 Like

As per my knowledge it’s Not risky, the pdf you’re viewing that’s web-viewer and inside web-viewer customisation allowed, so you can hide that part. :slight_smile: actually Play console will ban any app which revealed their url if no internet or any other issue which look alike web, so customisation is allowed, and you can do it.

Sir, in below video a youtuber gave solution. it works for single pdf link. dont know how to use it in my app which takes links from excel.
https://youtu.be/0Eo4WxKivtc?si=WGBm6kLaMgopg_7-

Hmm, I’m not completely convinced :grin:,

but I trust you. So…
immagine
blocks(91)
(Assuming the bar always takes up 56, I haven’t tested it on other devices)

Trust me @RaYzZz, there is no policy voilation to hide that part inside webviewer, mate!.

and @jnana_Bharathi don’t listen much to youtubers just go with this process as we said :

2 Likes

And he’s not really hiding that pop-out button. Screenshot 2025-11-13 192113 he only reloading same Preview link again and again through clock, which seems if anybody click on Screenshot 2025-11-13 192113 button that pdf load again and it’s hiding this part.

Screenshot 2025-11-13 192334