WKWebView could not access local javascript files

Question

Jeff_Lu OP

Created 2w

Replies 5

Boosts 0

Views 1.6k

Participants 3

We are experiencing an issue after Xcode 26.0 to load local javascript files to WKWebView to render our own design.

it used to work well, however after Xcode 26.0, when

[self.webView loadFileURL:fileURL allowingReadAccessToURL:accessURL];

it returns [PID=1514] WebProcessProxy::hasAssumedReadAccessToURL(3198190): no access

self.webRootPath = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:CHAT_VIEW_WEB_ROOT];

NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error = nil;

if (! [fileManager fileExistsAtPath:self.webRootPath]){
	[fileManager createDirectoryAtPath:self.webRootPath withIntermediateDirectories:NO attributes:nil error:&error];
}
NSURL *accessURL = [NSURL fileURLWithPath:self.webRootPath];

Not sure how to assign access permission to WKWebView.

Any help much appreciated.

Answered by pvollan in 880719022

Hi,

If this is still reproducing, could you file a feedback report, and possibly attach a demo Xcode project that is reproducing the issue?

Boost

Answer 1

Jeff_Lu OP

2w

here is error signature:

start setting access permission file:///var/mobile/Containers/Data/Application/9044BAAF-5152-4C71-A3BA-5292C6FEED70/Documents/cv_webroot/CM_chat_view_base.html with accessURL file:///var/mobile/Containers/Data/Application/9044BAAF-5152-4C71-A3BA-5292C6FEED70/Documents/cv_webroot/ 0x12c0d40c0 - [PID=1514] WebProcessProxy::hasAssumedReadAccessToURL(3198190): no access complete setting access permission file:///var/mobile/Containers/Data/Application/9044BAAF-5152-4C71-A3BA-5292C6FEED70/Documents/cv_webroot/CM_chat_view_base.html with accessURL file:///var/mobile/Containers/Data/Application/9044BAAF-5152-4C71-A3BA-5292C6FEED70/Documents/cv_webroot/

0

Answer 2

pvollan OP

1w

Hi,

Could you try resolving symlinks in accessURL? This can be done with the realpath function.

0

Answer 3

pvollan OP

1w

Accepted Answer

Hi,

If this is still reproducing, could you file a feedback report, and possibly attach a demo Xcode project that is reproducing the issue?

0

Answer 4

Jeff_Lu OP

1w

Thanks Apple, I filed DTS ticket, and get the solution from Apple Engineer. It is resolved.

0

Answer 5

Jeff_Lu OP

1d

On my end, it was due to call

[self.webView loadFileURL:fileURL allowingReadAccessToURL:accessURL]; multiple times, even though it was worked on earlier version.

here is the response from Apple side

The loadFileURL:allowingReadAccessToURL: call should be made only once, after all the resource files have been copied. The CSS and image files don't need to be loaded individually — they will be loaded automatically by the HTML when it references them, because your accessURL grants WKWebView read access to the entire cv_webroot directory. Here is what the corrected flow should look like:

hope this helps.

1