Pdf sometimes not loading with google embedded viewer on Android - android

I am using the google docs pdf embedded viewer in my android app to display my pdfs. Sometimes the viewer doesn't load my file even though most of the time it does and it's pretty random when it doesn't.
I generate the url with "https://docs.google.com/viewer?embedded=true&url=" + myUrl.
And after that I load the webview :
showLoader()
web_view.settings.javaScriptEnabled = true
web_view.clearCache(true)
web_view.webViewClient = object : WebViewClient() {
override fun onPageFinished(view: WebView?, url: String?) {
hideLoader()
}
override fun shouldOverrideUrlLoading(view: WebView?, request: WebResourceRequest?): Boolean {
web_view.loadUrl(url)
return true
}
override fun onReceivedSslError(view: WebView, handler: SslErrorHandler, error: SslError) {
println("before handler")
handler.proceed()
println("after handler")
}
}
web_view.loadUrl(url)
I tried to proceed if I encounter any sslError, to override urlLoading but none of this resolved my problem.
To test here is one of the url which doesn't always load :
http://docdif.fr.grpleg.com/general/MEDIAGRP/NP-FT-GT/LE10061AA.pdf
One thing I tried too is show the url when display on my app and when it doesn't load on my viewer it blocks too on my navigator. But if I reload the page it does charge.
Any idea what the bug might be?

Try this:
public void onPageFinished(WebView view, String url) {
if (view.getTitle().equals(""))
view.reload();
}
I hope that it can help you!

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Code:
#SuppressLint("SetJavaScriptEnabled")
private fun initWebview(url: String){
val ws = webView.settings
ws.javaScriptEnabled = true
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#Suppress("OverridingDeprecatedMember")
override fun shouldOverrideUrlLoading(view: WebView, url: String): Boolean {
view.loadUrl(url)
return false
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I have added internet-permissions and I also used the WebViewClient.onPageFinished method to check whether the page has loaded which turns out it did. JavaScript is also enabled for my WebView.
The code I use to set up my web view
webView.webChromeClient = KeplerWebChromeClient(progressBar)
webView.webViewClient = keplerWebViewClient
webView.settings.javaScriptEnabled = true
webView.settings.useWideViewPort = true
webView.settings.loadWithOverviewMode = true
webView.settings.setSupportZoom(true)
webView.settings.setSupportMultipleWindows(true)
webView.scrollBarStyle = View.SCROLLBARS_INSIDE_OVERLAY
webView.setBackgroundColor(Color.WHITE)
I am using KeplerWebChromeClient to display web page loading progress.
keplerWebViewClient is an object of WebViewClient class which I use to load webpages and to track for whether the webpage has finished loading or not.
And I must mention that this issue doesn't always arise. Sometimes when I run my app, the WebView does work and it does load and display the web page correctly and other times it doesn't. I have found the below stated logcat entries to be unique to when the web page isn't displayed.
E/chromium: [ERROR:tile_manager.cc(778)] WARNING: tile memory limits exceeded, some content may not draw
[ERROR:tile_manager.cc(778)] WARNING: tile memory limits exceeded, some content may not draw
E/chromium: [ERROR:tile_manager.cc(778)] WARNING: tile memory limits exceeded, some content may not draw
E/chromium: [ERROR:tile_manager.cc(778)] WARNING: tile memory limits exceeded, some content may not draw
What is the issue here and how do I fix it? Thanks in advance.
Edit:
I cleared all the app data from my phone and then I restarted my app. After doing so, everything was working just fine. I was able to browse using the WebView but after using the app a few more times i.e. closing and opening it, the problem reappeared. Clearing all data solves the problem temporarily. What aid can this be in solving the problem?
I have to try and it's working fine for me.
private fun setupWebView(url: String) {
webView.settings.javaScriptEnabled = true
webView.settings.domStorageEnabled = true
webView.settings.setPluginState(WebSettings.PluginState.ON);
webView.settings.allowFileAccess = true;
webView.webViewClient = WebClient()
webView.webChromeClient = CustomWebChromeClient()
webView.loadUrl(url)
}
private inner class WebClient : WebViewClient() {
override fun onPageStarted(view: WebView, url: String, favicon: Bitmap?) {
super.onPageStarted(view, url, favicon)
}
override fun onPageCommitVisible(view: WebView, url: String) {
super.onPageCommitVisible(view, url)
}
override fun shouldOverrideUrlLoading(
view: WebView,
url: String
): Boolean {
view.loadUrl(url)
return true
}
override fun onPageFinished(view: WebView, url: String) {
super.onPageFinished(view, url)
}
}
private inner class CustomWebChromeClient : WebChromeClient() {
override fun onJsAlert(
view: WebView,
url: String,
message: String,
result: JsResult
): Boolean {
return false
}
}
I hope it's work for you!

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override fun shouldOverrideUrlLoading(view: WebView, url: String): Boolean {
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// InternalWebviewFragment external (non mydomain) urls will be dispatched to an external browser
CLog.v("InternalWebviewFragment.getSimpleWebViewClientUrlLoading().shouldOverrideUrlLoadingOLD() isNotmydomain url: $url")
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}
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// mydomain urls should load fine in the webview
view?.loadUrl(url)
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}
// for APIs 24+
override fun shouldOverrideUrlLoading(
view: WebView?,
request: WebResourceRequest?
): Boolean {
if (!request?.url.toString().contains("mydomain")) {
// InternalWebviewFragment external (non mydomain) urls will be dispatched to an external browser
CLog.v("InternalWebviewFragment.getSimpleWebViewClientUrlLoading().shouldOverrideUrlLoading2() isNotmydomain url: ${request?.url.toString()}")
val i = Intent(Intent.ACTION_VIEW, Uri.parse(request?.url.toString()))
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}
CLog.v("InternalWebviewFragment.getSimpleWebViewClientUrlLoading().shouldOverrideUrlLoading() ismydomain url: $url")
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view?.loadUrl(request?.url.toString())
return super.shouldOverrideUrlLoading(view, request)
}

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class JavaScriptTokenSubstractInterface {
#JavascriptInterface
#SuppressWarnings("unused")
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Log.d("","html shown is loading and not the result.")
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}
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Below Code might resolve your issue
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