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expo-check-installed-apps

Troubleshooting

“Cannot find native module ‘ExpoCheckInstalledApps’”

Section titled ““Cannot find native module ‘ExpoCheckInstalledApps’””

The native code isn’t in the app you’re running.

  • You’re probably in Expo Go. Use a development build instead (npx expo run:android / npx expo run:ios or EAS).
  • In a dev build, rebuild after installing: npx expo prebuild --clean, then run again.
  • In bare React Native, make sure Expo modules are set up and run pod install.

Always returns false on iOS

Section titled “Always returns false on iOS”
  1. Check the scheme is in LSApplicationQueriesSchemes. Open ios/<App>/Info.plist after prebuild and look.
  2. Rebuild after changing the plugin config. Reloading JS isn’t enough.
  3. Make sure it’s the right scheme. Test it by typing scheme:// into Safari on the device.
  4. Look in the Xcode console for This app is not allowed to query for scheme. That means the scheme isn’t declared.
  5. Check you’re not over the 50-scheme limit.
  6. The iOS Simulator only has a few apps installed, so test on a real device.

Always returns false on Android

Section titled “Always returns false on Android”
  1. Check the package name is exactly right, for example from the Play Store URL.
  2. Check android/app/src/main/AndroidManifest.xml after prebuild has a <package android:name="…" /> inside <queries>.
  3. Rebuild the app.
  4. Confirm the app really is installed for the current user: adb shell pm list packages | grep <name>.

“Invalid Android package name: …”

Section titled ““Invalid Android package name: …””

On Android, every identifier must look like a package name: at least two dot-separated segments of letters, numbers and underscores, such as com.example.app. You’ll see this if you pass an iOS scheme like whatsapp on Android. Pick identifiers with Platform.OS or Platform.select.

“Invalid iOS URL scheme: …”

Section titled ““Invalid iOS URL scheme: …””

On iOS, a scheme must start with a letter and contain only letters, numbers, +, - and .. You’ll see this if you pass an Android package name containing an underscore on iOS, or a full URL with an invalid scheme.

Result object is missing a key

Section titled “Result object is missing a key”

Results are keyed by the normalised identifier. On iOS twitter:// becomes twitter, and surrounding spaces are trimmed. Look up results with the normalised value.

Still stuck?

Section titled “Still stuck?”

Open an issue with your Expo SDK version, platform, device, config plugin settings and the full error.