Android Question [SOLVED] API 30 - Showing Image inside webView not working

mc73 · Nov 4, 2021

Hi, after updating my app to API30, my images inside a webView are not displayed (I get the blank image). Wondering if I'm missing a new permission here.

B4X:

Dim imagePath As String=xui.FileUri(Cache.GetDirectory,myImage)
webView1.LoadHtml($"<HTML><HEAD></HEAD><BODY><IMG SRC="${imagePath}"></BODY></HTML>"$)

In this example, I'm using cache, but same thing happens with using dirInternal.

Computersmith64 · Nov 4, 2021

mc73 said:
Hi, after updating my app to API30, my images inside a webView are not displayed (I get the blank image). Wondering if I'm missing a new permission here.

B4X:

Dim imagePath As String=xui.FileUri(Cache.GetDirectory,myImage) webView1.LoadHtml($"<HTML><HEAD></HEAD><BODY><IMG SRC="${imagePath}"></BODY></HTML>"$)

In this example, I'm using cache, but same thing happens with using dirInternal.

This might point you in the right direction -> https://stackoverflow.com/questions/66072416/webview-on-android-11-not-showing-local-image-files

- Colin.

mc73 · Nov 4, 2021

Computersmith64 said:
This might point you in the right direction -> https://stackoverflow.com/questions/66072416/webview-on-android-11-not-showing-local-image-files

- Colin.

Unfortunately it didn't work (the first suggestion for base 64).
The second suggestion however, worked, and I'm pretty happy for it, thank you!

B4X:

webView1.Initialize("webview1")
Private wvsetttings As WebViewSettings
wvsetttings.setAllowFileAccess(webView1,True)

I'll mark this thread as solved.

Computersmith64 · Nov 4, 2021

mc73 said:
Unfortunately it didn't work (the first suggestion for base 64).
The second suggestion however, worked, and I'm pretty happy for it, thank you!

B4X:

webView1.Initialize("webview1") Private wvsetttings As WebViewSettings wvsetttings.setAllowFileAccess(webView1,True)

I'll mark this thread as solved.

Oh - yeah I was referring to the accepted answer on the thread I posted the link to. Should have been more specific...

- Colin.

Erel · Nov 5, 2021

The simplest way to show a large image is with SimpleMediaManager + ZoomImageView.

mc73 · Nov 10, 2021

Erel said:
The simplest way to show a large image is with SimpleMediaManager + ZoomImageView.

True. However in my case I had to use the webView cause I set it as a container to many different reports. Surely in the near future I'll try to reconstruct my app and get away from the webView, since I see more and more problems with it.

bobbruns · Nov 15, 2022

This change with the upgrade to SDK 29+ caught me. The minute I compiled with SDK31 my app broke. I wanted to load a web page with an image, but you must set:

wvsetttings.setAllowFileAccess(YOURNAMEFORWEBVIEW,True) for SDK >29 for the image tag to work correctly (<img src= xxx.png" alt = "alt">).

I had to use webview here. I am not having any issues with other content, which is created using internal memory and text strings, but the image from an internal file would not load.

Google changed the default setting from true to false apparently as a precaution against fraud. PayPal will not allow their website to be accessed anymore with webviews.

Apple iOS webview is not affected and still works fine.

The library is here:

WebViewSettings

Hi all. Here's a new library that makes it easy to set and get various WebView WebSettings. Note that the official documentation for many of these settings is rather brief, sometimes vague or virtually non-existent! Here is an alphabetical list of all methods with a short description. I've...

www.b4x.com

Of course you can set it back with b4xpages_disappear if you want. I sure would like to hear any other solutions.

Android Question [SOLVED] API 30 - Showing Image inside webView not working

mc73

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