So, we’re close to the end — how about a few sage words of advice?

JavaScript API

• Promisify your API
• Pre-process arguments in JavaScript
  • convert to appropriate types
  • throw type-mismatch errors, etc.
• Transpile ES2015+ to ES5 (not all targets support ES2015 natively, and ES is continuing to evolve yearly, anyway)
• Stick to the cordova.plugins namespace
  • Unless creating a polyfill; window is crowded!
• Return useful error messages to error callbacks

Native

• Return useful error information
• Use background threads for processing
  • iOS documentation
  • Android documentation
• Avoid init at app startup unless necessary

    <param name="onload" value="false" /> <!-- false is the default -->
  

Android

• Override pluginInitialize for plugin initialization logic (code)
• Runtime Permission Requests (Marshmallow) (docs)
  • cordova.requestPermission() (code)
  • cordova.hasPermission() (code)
  • Override onRequestPermissionResult (code)
• Don’t forget Android activity lifecycle (docs) (code)

iOS

• Use pluginInitialize for plugin initialization logic (eg) (code)
• If memory is getting low, onMemoryWarning is called (code)
• If app is going to be terminated, onAppTerminate is called (code)
• You can respond to pause, resume, etc. (code), but you have to register for notifications in pluginInitialize
• If you need to handle URLs, override handleOpenURL (code)
• Never, ever call JavaScript that triggers blocking UI (e.g. alert)

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