运行应用时出现Error: Uncaught (in promise): plugin_not_installed错误，求解决方案

Hey there, let's work through this frustrating plugin error together! This error almost always means your app is trying to call a Cordova/Capacitor plugin that either isn't installed properly, hasn't been synced to your device, or isn't present in your project at all. Here's how to track down and fix it:

Step 1: Find Which Plugin Your Code Is Trying to Use #

First, pinpoint exactly which plugin is missing by searching your codebase:

• For Capacitor projects: Look for calls to Plugins.[PluginName] (e.g., Plugins.Camera) or imports from @capacitor/[plugin-name] (like import { Camera } from '@capacitor/camera').
• For Cordova projects: Search for cordova.plugins.[PluginName] (e.g., cordova.plugins.barcodeScanner).

This will tell you the exact plugin your app is expecting that isn't installed.

Step 2: Verify Your Installed Plugins #

Next, cross-check against your installed plugins and package.json:

• Capacitor: Run npx cap list in your terminal to see all native plugins linked to your project. Compare this list with the plugin you found in Step 1. Also check your package.json's dependencies to ensure the plugin's npm package is listed.
• Cordova: Run cordova plugin list to see installed Cordova plugins. Again, match this to the plugin your code is calling, and confirm the plugin's package exists in package.json.

Step 3: Fix the Missing Plugin #

Once you've identified the missing plugin, follow these steps:

1. Install the plugin:
   • Capacitor: npm install @capacitor/[plugin-name] (e.g., npm install @capacitor/camera)
   • Cordova: cordova plugin add cordova-plugin-[plugin-name] (e.g., cordova plugin add cordova-plugin-camera)
2. Sync to your device/project:
   • Capacitor: Run npx cap sync to push the plugin to your Android/iOS projects, then rebuild your app.
   • Cordova: Run cordova prepare to sync the plugin, then rebuild.
3. Troubleshoot if it still fails:
   • Clear cached builds: For Capacitor, you can delete the android/ios folders, re-add them with npx cap add android/npx cap add ios, then sync again. For Cordova, run cordova clean before rebuilding.
   • Check compatibility: Make sure the plugin version matches your Capacitor/Cordova version and target OS versions (e.g., some older plugins don't support Capacitor 5+).

If you can share the specific code that triggers the error, your full installed plugin list, and the relevant parts of your package.json, I can help you narrow this down even faster!

内容的提问来源于stack exchange，提问作者Bryan Arreola