miru-project/miru-app

Type null is not a subtype of type string in typecast

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#333 opened on Jul 12, 2025

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help wanted

Description

Brief summary

Cannot see detailed view of an anime title

Steps to reproduce

  1. Add HiAnime extension (might not be relevant)
  2. Navigate to search tab
  3. Next to HiAnime, click show all
  4. Click on any anime title
  5. Error appears

Additional note: The detailed view of a title works fine if you click on any anime title under HiAnime in the search tab, without going in the show all section.

Miru version

1.8.1

Device

Samsung Galaxy Note 9

Acknowledgements

  • I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.
  • If this is an issue with a extension, I should be opening an issue in the extension repository.

Contributor guide

Tech stack
dartandroid
Domain
frontendmobile
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Basic Dart knowledgeFlutter development setupUnderstanding of null safety
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Investigate the difference in data flow when navigating from the 'show all' section versus directly from the search results. Focus on the widget that handles the transition to the detail view (likely an AnimeDetailScreen). Check if the title's identifier or data is passed correctly and if there are any optional fields that might be null. Look for typecasts to String and add null checks or default values as needed. The error suggests a null value is being cast to String; identify where that cast occurs.