[Bug] Not allowed to load local resource for Android

[tabachuk]

I'm trying to set an Android local resource as an image source in Html, but I get this error in console:

Could you please explain me what I need to do to resolve this? I'm using MAUI Preview 8 with Blazor.

[mattleibow]

This looks like Blazor? @Eilon is this maybe just the path is not valid? Usually the path is like sdcard/0/emulated/data or something...

[Eilon]

Does Android allow directly displaying storage resources in the WKWebView? I thought it had to be in Android Assets? I wonder if this works in a regular WebView. We might be accidentally blocking this.

@tabachuk can you share more info about your code, such as how you are creating the WebView, and what the HTML source looks like?

[tabachuk]

@Eilon do you mean MAUI Blazor? I followed this repo.
All code concerned with MAUI Blazor configuration I copied from it.

[Eilon]

@tabachuk got it thank you. Then you added something like <img src="file:///sdcard/0.jpg" /> to one of the .razor files? Can you show the exact HTML that you added?

[tabachuk]

@Eilon yes. Here is the instance of HTML code:
<img id="cropImage" src="@(ViewModel.Photo.Source)" />
Where ViewModel.Photo.Source is the file path to an image, which I get from camera or gallery. I also tried to use file:///sdcard/0.jpg instead, but it still doesn't work. Exactly the same code I used in Blazor Mobile Bindings and it worked both on simulators and real devices. At one moment it stopped to work on my phone, but I didn't dig into this problem.

[Eilon]

@tabachuk great thank you for the details. We might be accidentally blocking certain web requests, so I'll investigate this.

[maptz]

Hi, I'm seeing this problem on Windows too using MAUI Blazor.

An image tag with an src that points to a file:/// does not load with the "Not allowed to load local resource" error.

Would be great to know a workaround for this? For e.g. is there a way of creating routing a server request in MAUI Blazor, ie use an HTTP client to call some local route which serves up raw image bytes?

[shimingsg]

verified repro with VS 17.2.0 Preview 2.0 [32228.609.main] on Windows

[vhj1995]

verified repro with VS 17.2.0 Preview 2.0 [32228.609.main] on Windows

Hi, I am Glad you verified it. I too hit the same thing. Any idea on when a fix would publish?

[ghost]

We've moved this issue to the Future milestone. This means that it is not going to be worked on for the coming release. We will reassess the issue following the current release and consider this item at that time.

[vhj1995]

@mkArtakMSFT

Thank you.

When will next release be published?

How frequently are new releases is published in general? I need to have some expectations in terms of when apps can use local resources, in particular saving to local disk.

We've moved this issue to the Future milestone. This means that it is not going to be worked on for the coming release. We will reassess the issue following the current release and consider this item at that time.

[Eilon]

@vhj1995 it means that it won't be fixed for the first release of MAUI, which is in Q2 of this year. The next version after that is I think not finalized, but probably at the end of this year (Q4).

[mkArtakMSFT]

This issue will be resolved as part of dotnet/aspnetcore#30290