loading PDFs into the android webview

Question

in my android application I have to load PDFs in the server into a webview. according to a stack-overflow question I used Google DOC view in loading it. but my problem is some times it does not show the file in the webview while in another instance it displays quite well. I can't figure out the problem. but the code appears to be OK. my code segment is as below.

WebViewLable.getSettings().setJavaScriptEnabled(true);    
    WebViewLable.getSettings().setLoadWithOverviewMode(true);
    WebViewLable.getSettings().setUseWideViewPort(true);  

    fullURL=GoogleDOCview+"https://livefarmer.com/labels/"+itemURL;
    WebViewLable.loadUrl(fullURL);

}

private class Callback extends WebViewClient {
    @Override
    public boolean shouldOverrideUrlLoading(
            WebView view, String url) {
        return(false);
    }
}

and my webview is as below.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/app_bg_black"
    android:orientation="vertical" >

    <include
        android:id="@+id/nav_bar"
        android:layout_width="fill_parent"
        layout="@layout/nav_bar" />


    <WebView
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/webViewLable"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:focusable="true"
        android:focusableInTouchMode="true"
        android:windowSoftInputMode="adjustResize" />

</LinearLayout>

this is the logcat output when it not showing the pdf.

enter image description here

this is the logcat output when it showing the pdf in the webview.

enter image description here

So whats the wrong with my code. how can I fix this. Thanks and regards!

What is `WebViewLable`? Is this even real code? What is `GoogleDOCview`, and what is `itemURL`? — jww, Aug 27 '14 at 09:39
yep. this is a real code. from which I'm working on now. So I can't post whole code as it's not belongs to me. **WebViewLable** is my webview. the PDFs I'm loading are taking from a server. and **itemURL** is the URL of those and **GoogleDOCview** is Google Document Viewer. — Samantha Withanage, Aug 27 '14 at 09:49

score 2 · Accepted Answer · answered Aug 27 '14 at 09:07

2

String PdfUrl = "http://pdfexample.com/abcd.pdf";
String url = "http://docs.google.com/gview?embedded=true&url=" + PdfUrl;
Log.i(TAG, "PDF URL : " + url);
webView.getSettings().setJavaScriptEnabled(true); 
webView.loadUrl(url);

try this

answered Aug 27 '14 at 09:07

Vaishali Sutariya

5,093
30
32

1

some times it display, some times it doesn't. – Samantha Withanage Aug 27 '14 at 09:12
no it always display it,, please try this code only dear – Vaishali Sutariya Aug 27 '14 at 09:18
no dear. it's not always working. those PDFs contains only two to three pages. and it still works the same. – Samantha Withanage Aug 27 '14 at 09:51
1

do you have any idea on this problem.... ????? some times it loads PDFs properly. but I couldn't track the error. it shows no error messages in log-cat. – Samantha Withanage Aug 27 '14 at 10:02
after taking some time big pdf is load or not ? – Vaishali Sutariya Aug 27 '14 at 10:08
no dear. in my case I have to use small PDFs, in most cases contains only two to three pages. so it's appears to be that's not the problem. and I added the logcats in two instances. :) – Samantha Withanage Aug 27 '14 at 10:13
please remove WebViewLable.getSettings().setLoadWithOverviewMode(true); WebViewLable.getSettings().setUseWideViewPort(true); – Vaishali Sutariya Aug 27 '14 at 10:15
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/60070/discussion-between-vaishali-and-samantha-withanage). – Vaishali Sutariya Aug 27 '14 at 10:15
did it. but same outcome. – Samantha Withanage Aug 27 '14 at 10:16
you got issue still ? – Vaishali Sutariya Aug 27 '14 at 10:18
http://stackoverflow.com/questions/14953604/reading-pdf-from-url-using-pdfviewer-library-in-android-app/14954196#14954196 see this – Vaishali Sutariya Aug 27 '14 at 10:32
2

Hi guys! This thread is quite old, but I'm facing the same problem: sometimes the pdf is not displayed into the webview (and it seems a pretty random behavior) .. did you manage to find a solution? Thanks! – DSoldo Oct 27 '16 at 11:13
Hi, if any one still facing same problem try below solution which working fine https://stackoverflow.com/a/63900835/8265484 – Mayur Dabhi Sep 15 '20 at 11:34

score 0 · Answer 2 · answered Jun 07 '19 at 10:47

The way I have managed to resolve the above is by checking the content height after the WebView has finished loading and if its value is 0, it then attempts to reload the url.

        myWebView.setWebViewClient(new WebViewClient() {
            @Override
            public void onPageFinished(WebView view, String url) {
                super.onPageFinished(view, url);
                if (view.getContentHeight() == 0) view.loadUrl(url);
            }
        });

loading PDFs into the android webview

2 Answers2

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