com.github.barteksc:android-pdf-viewer load pdf from base64 android studio code example
Example: com.github.barteksc:pdfviewer-android:1.9.0
<com.github.barteksc.pdfviewer.PDFView
android:id="@+id/pdfView"
android:layout_width="match_parent"
android:layout_height="match_parent"/>