flutter module_error ai_generated true

MissingPluginException: No implementation found for method getBatteryLevel on channel com.example.battery

ID: flutter/platform-channel-method-not-implemented

Also available as: JSON · Markdown · 中文
88%Fix Rate
85%Confidence
1Evidence
2024-02-15First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
Flutter 3.22 active — — —
Dart 3.4 active — — —
Android SDK 34 active — — —
iOS 17 active — — —

Root Cause

The native platform plugin does not register the expected method handler for the given channel, often due to missing plugin registration or incorrect method name.

generic

中文

原生平台插件未为指定通道注册预期的方法处理器，通常是由于缺少插件注册或方法名称错误。

Official Documentation

https://docs.flutter.dev/platform-integration/platform-channels

Workarounds

  1. 85% success Ensure the plugin's native code registers the method channel. For Android, check MainActivity.kt: GeneratedPluginRegistrant.registerWith(flutterEngine). For iOS, check AppDelegate.swift: GeneratedPluginRegistrant.register(with: self). 
    Ensure the plugin's native code registers the method channel. For Android, check MainActivity.kt: GeneratedPluginRegistrant.registerWith(flutterEngine). For iOS, check AppDelegate.swift: GeneratedPluginRegistrant.register(with: self).
  2. 90% success Run 'flutter clean' and 'flutter pub get' to reset build cache and regenerate registrant files. 
    Run 'flutter clean' and 'flutter pub get' to reset build cache and regenerate registrant files.
  3. 75% success Verify the method name in the native handler matches exactly what Flutter calls (case-sensitive). 
    Verify the method name in the native handler matches exactly what Flutter calls (case-sensitive).

中文步骤

  1. 确保插件的原生代码注册了方法通道。对于 Android，检查 MainActivity.kt：GeneratedPluginRegistrant.registerWith(flutterEngine)。对于 iOS，检查 AppDelegate.swift：GeneratedPluginRegistrant.register(with: self)。
  2. 运行 'flutter clean' 和 'flutter pub get' 以重置构建缓存并重新生成注册文件。
  3. 验证原生处理程序中的方法名称与 Flutter 调用的完全匹配（区分大小写）。

Dead Ends

Common approaches that don't work:

  1. Rebuilding the entire app without cleaning caches 40% fail

    Stale build artifacts may still reference old plugin registrations; a clean build is needed.

  2. Manually editing generated plugin registrant files 70% fail

    Registrant files are auto-generated and overwritten on rebuild; manual edits are lost.

  3. Adding the plugin again in pubspec.yaml without checking native setup 50% fail

    The plugin is already declared; the issue is in native code registration, not Dart dependency.