[BUG] Content is not displayed in viewpagers when swiping back to a tab containing a PdfRendererView

[nordfalk]

📝 Describe the Bug

When using a viewpager content is lost when coming back to a PDF view.

Reason:
You are releasing resurces in PdfRendererView.onDetachedFromWindow() but you are not re-aquiring the resurces in the corresponding onAttachedFromWindow(), and therefore your component doesent work inside a viewpager.

Read more here:
https://stackoverflow.com/questions/42126105/android-view-onattachedtowindow-and-ondetachedfromwindow-when-are-they-calle

📖 Library Version

• PDF Viewer Version: v2.3.7.
  The bug is not present in v2.3.6 - see v2.3.6...v2.3.7

Specifically, I think it happens because you clear the adapter here:

🖼️ Screenshots/Videos

Using implementation("io.github.afreakyelf:Pdf-Viewer:2.3.7"), first display reveals the PDF

navigating to other tab and back again the PDF content is lost:

🖼️ Screenshots/Videos of the same code using v2.3.6

navigating to other tab and back again the PDF content is intact:

[github-actions]

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