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

- **ID:** `flutter/platform-channel-method-not-implemented`
- **Domain:** flutter
- **Category:** module_error
- **Verification:** ai_generated
- **Fix Rate:** 88%

## 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.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| Flutter 3.22 | active | — | — |
| Dart 3.4 | active | — | — |
| Android SDK 34 | active | — | — |
| iOS 17 | active | — | — |

## Workarounds

1. **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).** (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).
   ```
2. **Run 'flutter clean' and 'flutter pub get' to reset build cache and regenerate registrant files.** (90% success)
   ```
   Run 'flutter clean' and 'flutter pub get' to reset build cache and regenerate registrant files.
   ```
3. **Verify the method name in the native handler matches exactly what Flutter calls (case-sensitive).** (75% success)
   ```
   Verify the method name in the native handler matches exactly what Flutter calls (case-sensitive).
   ```

## Dead Ends

- **Rebuilding the entire app without cleaning caches** — Stale build artifacts may still reference old plugin registrations; a clean build is needed. (40% fail)
- **Manually editing generated plugin registrant files** — Registrant files are auto-generated and overwritten on rebuild; manual edits are lost. (70% fail)
- **Adding the plugin again in pubspec.yaml without checking native setup** — The plugin is already declared; the issue is in native code registration, not Dart dependency. (50% fail)