Android Webview download file when submit post form

Question

I have a webview in my app that is working fine, i can navigate and submit normal forms, click on href, etc. I have one issue with forms that go to a php file that i use to download file.

The code of the php is:

$indice=$_POST['indice'];
$sql_file="SELECT * FROM files WHERE indice=".$indice;
$file=$connect->query($sql_file);
$row=$file->fetch_assoc();
header("Content-Type: {$row['type']}\n");
header("Content-Disposition: attachment; filename=\"{$row['name']}\"\n");
header("Content-Length: {$row['size']}\n");
echo base64_decode($row['data']);

I try to manage the download with the function:

public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request)

But is not working because is a submit of a form show this function is not executed, it only execute when you click in a href or similar.

With the function "onPageStarted" i can get the url so i know if i submitted the download form but i cant see the post data.

How can i manage the download? In IOS the webclient did automatically and even load the PDF in the webclient.

Best Regards.

with [downloadmanager](https://developer.android.com/reference/android/app/DownloadManager.html) you can manage file downlaod — Mehran Zamani, Mar 04 '17 at 15:45
Possible duplicate of [Download File inside WebView](http://stackoverflow.com/questions/10069050/download-file-inside-webview) — KlevisGjN, Mar 04 '17 at 15:49
I try with a download listener but didnt execute. I debug with a Log.d and never show. So i cant handle with a download listener and dont know why — Roke, Mar 04 '17 at 16:49
Hi, did you ever solve this? I'm battling with it, nearly solved the issue but wondering if you found a simpler way. — Garcon, Jun 04 '20 at 16:20

score -2 · Answer 1 · edited May 23 '17 at 12:00

-2

You just need your php file to download the file when submitting and add download listener to Webview in your application.

Anyway your post is a possible duplicate of the following:

1. Autostart file download after form submission
2. Download File inside WebView

edited May 23 '17 at 12:00

Community

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answered Mar 04 '17 at 15:49

KlevisGjN

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The form works, i try in the chrome client outside my app and works and the document is downloaded so i dont think the problem is in the form or the post submit. – Roke Mar 04 '17 at 16:50
Did you add the permission to write in storage so webview can save the downloaded file in storage? – KlevisGjN Mar 04 '17 at 16:55
Yes, – Roke Mar 04 '17 at 16:57

Android Webview download file when submit post form

1 Answers1