Async Storage is a community-maintained module for React Native that provides an asynchronous, unencrypted, key-value store. Async Storage is not shared between apps: every app has its own sandbox environment and has no access to data from other apps.
Keychain Services allows you to securely store small chunks of sensitive info for the user. This is an ideal place to store certificates, tokens, passwords, and any other sensitive information that doesn’t belong in Async Storage.
Shared Preferences is the Android equivalent for a persistent key-value data store. Data in Shared Preferences is not encrypted by default, but Encrypted Shared Preferences wraps the Shared Preferences class for Android, and automatically encrypts keys and values.
The Android Keystore system lets you store cryptographic keys in a container to make it more difficult to extract from the device.
In order to use iOS Keychain services or Android Secure Shared Preferences, you can either write a bridge yourself or use a library which wraps them for you and provides a unified API at your own risk. Some libraries to consider:
Deploy your function to google cloud with command: firebase deploy –only functions:function_name
firebase deploy --only functions:yourfunction
You should see the completed deploy result like this.
=== Deploying to 'xxxxxxxx'...
i deploying functions
i functions: ensuring required API cloudfunctions.googleapis.com is enabled...
i functions: ensuring required API cloudbuild.googleapis.com is enabled...
✔ functions: required API cloudbuild.googleapis.com is enabled
✔ functions: required API cloudfunctions.googleapis.com is enabled
✔ functions[yourfunction(us-central1)]: Successful update operation.
✔ Deploy complete!
I got this error when running react-native app by running the command: npx react-native run-android
error Failed to launch emulator. Reason: No emulators found as an output of `emulator -list-avds`.
warn Please launch an emulator manually or connect a device. Otherwise app may fail to launch
Checking adb device running and the command not found.
zsh: command not found: adb
The solution for Mac user is to edit .zshrc by add following:
# fix adb command not found
# fix No emulators found
Save it and don’t forget to restart zsh for the changes to take effect!
These icons are called SF Symbols. There are over 2,400 symbols you can use in iOS 13and later, macOS 11 and later, watchOS 6 and later, and tvOS 13 and later. You can use a symbol everywhere you can use an image.