[7.1.4] Android null pointer exception

[cristianoccazinsp]

Environment

System:
    OS: macOS 11.6
    CPU: (8) x64 Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
    Memory: 208.78 MB / 16.00 GB
    Shell: 5.8 - /bin/zsh
  Binaries:
    Node: 14.17.6 - /usr/local/bin/node
    Yarn: 1.22.5 - /usr/local/bin/yarn
    npm: 7.24.0 - /usr/local/bin/npm
    Watchman: 2021.06.07.00 - /usr/local/bin/watchman
  Managers:
    CocoaPods: 1.10.1 - /usr/local/bin/pod
  SDKs:
    iOS SDK:
      Platforms: DriverKit 21.0.1, iOS 15.0, macOS 12.0, tvOS 15.0, watchOS 8.0
    Android SDK: Not Found
  IDEs:
    Android Studio: 2020.3 AI-203.7717.56.2031.7678000
    Xcode: 13.1/13A1030d - /usr/bin/xcodebuild
  Languages:
    Java: 11.0.11 - /usr/bin/javac
  npmPackages:
    @react-native-community/cli: Not Found
    react: 17.0.2 => 17.0.2 
    react-native: 0.66.3 => 0.66.3 
    react-native-macos: Not Found
  npmGlobalPackages:
    *react-native*: Not Found

Platforms

Android

Versions

• Android: 11, 12
• react-native-netinfo: 7.1.4
• react-native: 0.66.3
• react: 17.0.2

Description

#547 introduced a null pointer exception.

java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.net.NetworkCapabilities.hasCapability(int)' on a null object reference
        at com.reactnativecommunity.netinfo.NetworkCallbackConnectivityReceiver.updateAndSend(NetworkCallbackConnectivityReceiver.java:104)
        at com.reactnativecommunity.netinfo.NetworkCallbackConnectivityReceiver$1.run(NetworkCallbackConnectivityReceiver.java:136)
        at android.os.Handler.handleCallback(Handler.java:938)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:246)
        at android.app.ActivityThread.main(ActivityThread.java:8633)
        at java.lang.reflect.Method.invoke(Method.java:-2)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)

This is most likely related to two threads modifying the instance variables while the code is running.

Reproducible Demo

[cristianoccazinsp]

Also, the two crashes I received a report like this, were from an app fully in background started in headless.