App - Unable to scroll the PDF attachment with 2 pages (pay on 22/6)

[isagoico]

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Expected Result:

User should be able to view the whole document.

Actual Result:

User is unable to scroll the PDF file.

Action Performed:

1. Launch the app
2. Log in with any account and select any user
3. Click on add attachment
4. Upload a PDF with minimum 2 pages
5. Click on the PDF preview and scroll pages

Workaround:

No workaround found.

Platform:

Where is this issue occurring?

Web
iOS
Android ✔️
Desktop App
Mobile Web

Version Number: 1.0.58-0

Logs: https://stackoverflow.com/c/expensify/questions/4856

Notes/Photos/Videos:

Bug5093686_Screen_Recording_20210531-135522_Expensifycash.mp4

Expensify/Expensify Issue URL:

Upwork posting

[MelvinBot]

Triggered auto assignment to @Gonals (Engineering), see https://stackoverflow.com/c/expensify/questions/4319 for more details.

[Gonals]

Changing to weekly and sending to the pool!

[isagoico]

Issue reproducible today during KI retests

[MelvinBot]

Triggered auto assignment to @bfitzexpensify (External), see https://stackoverflow.com/c/expensify/questions/8582 for more details.

[rdjuric]

Proposal

We use react-native-modal for our Modals. In this library, there's a known issue where using a ScrollView inside a swipeable Modal causes that Modal to ignore the scroll movement (react-native-modal/react-native-modal#236).

Our PDF component (from react-native-pdf) is a ScrollView. So when we try to use it inside our Modal component we run into the issue mentioned above.

The workarounds mentioned in that issue involve wrapping the content of our ScrollView inside a TouchableOpacity or a View with a custom lifecycle for the gesture responder. In our case, since the ScrollView is added by a library, this would require a patch to the library.

I think a better solution would be to make our PDF Modals not swipeable. It's already the case that our PDF Modals can't be closed by swiping (since the swipe movements are captured by the PDF), so making it not swipeable would fix the bug without changing any other behavior.

A good way to do this would be creating a new MODAL_TYPE in /src/styles/getModalStyles.js, for our PDF Modals. It would be the same as the current one, but without the swipeDirection.

[MelvinBot]

Triggered auto assignment to @iwiznia (Exported), see https://stackoverflow.com/c/expensify/questions/7972 for more details.

[iwiznia]

@rdjuric that proposal sounds good (assuming it actually works 😄 )
@bfitzexpensify can you hire in upwork?

[rdjuric]

@iwiznia Cool! I went ahead and made a PR #3487

[isagoico]

Issue reproducible today during KI retests

[bfitzexpensify]

Reopening so I remember to pay this out in seven days if there are no regressions.

[bfitzexpensify]

Done!