Fix NullPointerException in onBackPressed()

[sonalyadav1]

Description (required)

Fixes #6214

What changes did you make and why?

• Fixed a NullPointerException crash in MainActivity.kt caused by contributionsFragment being null.
• Added null checks to prevent app crashes when pressing the back button on the Contributions tab.

Tests performed (required)

Tested {BetaDebug} on {VIVO V 25} with API level {34}.

Screenshots (for UI changes only)

Screenrecording_20250315_202828.mp4

[github-actions]

✅ Generated APK variants!

• 🤖 Download betaDebugAPK
• 🤖 Download prodDebugAPK

[nicolas-raoul]

That fixes the crash, thanks! 🙂

[nicolas-raoul]

Hi Sonal,

We have zero candidates so far for this summer's Outreachy internship:

https://www.outreachy.org/outreachy-june-2025-internship-cohort/communities/wikimedia/#improve-the-nearby-feature-of-the-wikimedia-common

If you are interested, please do not hesitate to apply.
About Outreachy and how it works: https://www.outreachy.org

[sonalyadav1]

@nicolas-raoul Thank you for sharing this opportunity! I was really interested in applying for the Outreachy internship, but unfortunately, my initial application was not approved.

I wanted to ask if there is any way to reapply or another process to still be considered for Outreachy this round. I’m very eager to contribute to the Nearby feature improvement project and would appreciate any guidance on how I might proceed.

Looking forward to your advice.

[nicolas-raoul]

Understood, thanks for the fast reply!
That's sad to hear. I am actually quite new to Outreachy, and have no information about appeals... 😓

[misaochan]

Hey @sonalyadav1 , sorry to hear that. :( We're not very familiar with the admin side of things, but you can contact the org admins for Wikimedia or the Outreachy organizers mailing list, and hopefully they might be able to help you?

If you have any questions, please contact your community coordinators Gopa Vasanth <gopavasanth1999@gmail.com>, "debt (deb tankersley)" <dtankersley@wikimedia.org>, Mahfuza Humayra Mohona <mhmohona@gmail.com>, L Goto <lgoto@wikimedia.org>. Also, you can always reach out to the Outreachy organizers at <organizers@outreachy.org> for support.

[sonalyadav1]

Thank you for your response and for sharing these contacts! I’ll reach out to them to understand if there’s any way I can still be considered for Outreachy this round.

[sonalyadav1]

@nicolas-raoul and @misaochan I wanted to update you that my Outreachy application has been approved! Thank you so much for your guidance and for encouraging me to apply.

[misaochan]

@nicolas-raoul and @misaochan I wanted to update you that my Outreachy application has been approved! Thank you so much for your guidance and for encouraging me to apply.

That's fantastic news! :) Feel free to submit your contributions through the Outreachy portal whenever you can, the deadline is 15 April I believe.

[nicolas-raoul]

Fantastic indeed!

As you know, relevant information is available here: #6237

If any information is missing or if you have any question, please ask on that page, it might help potential other applicants too. :-)