flutter assertion_error ai_generated true

AssertionError: 'file:///...' is not a valid URI

ID: flutter/invalid-uri-assertion

Also available as: JSON · Markdown · 中文
92%Fix Rate
82%Confidence
1Evidence
2023-04-20First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.0.0 active — — —
3.7.0 active — — —
3.16.0 active — — —

Root Cause

Using a malformed URI string (e.g., missing scheme or double slashes) when constructing a Uri object.

generic

中文

在构造 Uri 对象时使用了格式错误的 URI 字符串（例如缺少方案或双斜杠）。

Official Documentation

https://api.dart.dev/stable/dart-core/Uri-class.html

Workarounds

  1. 95% success Use Uri.file() to create file URIs correctly from a file path. 
    Use Uri.file() to create file URIs correctly from a file path.
  2. 85% success Validate and sanitize the URI string before parsing with Uri.parse(). 
    Validate and sanitize the URI string before parsing with Uri.parse().
  3. 90% success Use path_provider to get correct paths and then convert to URI. 
    Use path_provider to get correct paths and then convert to URI.

中文步骤

  1. Use Uri.file() to create file URIs correctly from a file path.
  2. Validate and sanitize the URI string before parsing with Uri.parse().
  3. Use path_provider to get correct paths and then convert to URI.

Dead Ends

Common approaches that don't work:

  1. 40% fail

    Does not address the root cause of missing or malformed scheme (e.g., 'file:///path' vs 'file:///C:/path').

  2. 35% fail

    Uri.parse requires absolute URIs; relative paths cause assertion errors.

  3. 25% fail

    Without a scheme, the URI is invalid; the platform may misinterpret the path.