Show blank page in showing pdf via Googler drive in Android webview

Question

I show my pdfs via https://docs.google.com/viewer?embedded=true&url={my pdf link} in WebView. Sometimes my WebView shows a blank page without any error in "onReceivedError" method. Why this blank page show?

Answer 1

Take this as an example.

class PdfViewActivity : AppCompatActivity() {
    private lateinit var activityPdfViewBinding: ActivityPdfViewBinding

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        activityPdfViewBinding = DataBindingUtil.setContentView(this, R.layout.activity_pdf_view)
        val path =  "https://github.github.com/training-kit/downloads/github-git-cheat-sheet.pdf" // Add Your URL here
        loadPdfFromURL(path)
    }

    @SuppressLint("SetJavaScriptEnabled")
    private fun loadPdfFromURL(path: String?) {
        activityPdfViewBinding.webview.settings.loadWithOverviewMode = true
        activityPdfViewBinding.webview.settings.javaScriptEnabled = true
        val url = "https://docs.google.com/gview?embedded=true&url=$path"
        activityPdfViewBinding.webview.loadUrl(url)
    }
}

also, add these lines into onPageFinished method

if (view.getTitle().equals("")) { 
   view.reload();
}