When opening the app from a notification, a loading animation should replace the black screen

[marc-farre]

1. Click on an email notification ("View online" button)
2. The HumHub app opens
3. We see for less than a second the form to enter the HumHub instance URL (renders like a flash)
4. A black screen is shown or a few seconds (sometimes up to 10 seconds)
5. The content is displayed.

Could we replace 3 and 4 with a loading animation? It looks like a bug at the moment.

[marc-farre]

@PrimozRatej Thanks. I don't know why, but on version 1.0.98 on Android 10 I still don't see any loading animation. The screen is still black.

@luke- maybe this issue could be reopened.

[luke-]

FYI, just released 1.0.99

[marc-farre]

With 1.0.99 the animation works (it's very nice!) when the app is already opened.

However, it doesn't solve the black screen.

On a browser, while the page is being loaded, we have an animation on the tab:

But on the mobile app, we only see a black screen.

On this example, the black screen lasts 5 seconds (but sometimes it's longer):

To reproduce:

1. Click on a notification
2. The app displays the instance URL form for a short time
3. The blank screen is shown (as long as the page takes to be loaded)
4. The page is displayed