Unable to compile on Android. Giving "error: cannot find symbol"

Bug

Unable to successfully Compile the code on Android when run react-native run-android

ERROR LINE (in terminal):

/node_modules/react-native-device-info/android/src/main/java/com/learnium/RNDeviceInfo/RNDeviceMo
dule.java:394: error: cannot find symbol
      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
                                                      ^
  symbol:   variable P
  location: class VERSION_CODES

/node_modules/react-native-device-info/android/src/main/java/com/learnium/RNDeviceInfo/RNDeviceMo
dule.java:396: error: cannot find symbol
        locationEnabled = mLocationManager.isLocationEnabled();
                                          ^
  symbol:   method isLocationEnabled()
  location: variable mLocationManager of type LocationManager

Environment info

React Native Environment Info:
    System:
      OS: macOS 10.14.4
      CPU: (8) x64 Intel(R) Core(TM) i7-4980HQ CPU @ 2.80GHz
      Memory: 87.72 MB / 16.00 GB
      Shell: 5.3 - /bin/zsh
    Binaries:
      Node: 8.4.0 - ~/.nvm/versions/node/v8.4.0/bin/node
      Yarn: 1.5.1 - /usr/local/bin/yarn
      npm: 5.3.0 - ~/.nvm/versions/node/v8.4.0/bin/npm
      Watchman: 4.9.0 - /usr/local/bin/watchman
    SDKs:
      iOS SDK:
        Platforms: iOS 12.2, macOS 10.14, tvOS 12.2, watchOS 5.2
    IDEs:
      Android Studio: 3.4 AI-183.6156.11.34.5522156
      Xcode: 10.2.1/10E1001 - /usr/bin/xcodebuild
    npmPackages:
      react: 16.5.0 => 16.5.0 
      react-native: 0.57.1 => 0.57.1

Library Version using:
    "react-native-device-info": "^2.1.1",

Steps To Reproduce

1. Install the Library using yarn add react-native-device-info
2. Run: react-native link react-native-device-info
3. Run react-native run-android

What I have tried

1. I have tried to comment the aforementioned lines from the code. Complies successfully but app crashes on launch.
2. I have returned true for locationEnabled from the code. Same result.
3. Deleted the entire function, as I was unable to find it anywhere in the code. Same result.

Describe what you expected to happen:

Expected to build the debug release to run on the device or emulator installed using Android Studio on Mac OSX, like it is building and working on iOS (Working Perfectly for iOS on the same project)

[mikehardy]

No upgrade guide is needed, the reference in the changelog should be sufficient, it’s just that change https://github.com/react-native-community/react-native-device-info/releases/tag/v2.0.0

It looks like I may have had think-o there though, it says (or said, I will edit) ‘breaking: note that isLocationEnabled requires minCompileSdk 28’

It should say ‘breaking: note that isLocationEnabled requires compileSdkVersion 28’

That said, looks like your ext block is correct

There will be one instance of compileSdkVersion in your project (or there should be)

And it will be referenced in your android/app/build.gradle (or it should be)

Check out this repository from github Run the example It works ?

Perhaps you are not referencing the variable and it is hard coded in android/app/build.gradle

One thing to note. starting Aug 1st, you can’t even publish a new APK on Play Store without targetSdkVersion of 28 anymore, and you can’t target that without compiling against that, so I have no idea how you will be able to publish? I guess if it’s just an update you have a couple more months, but you need to move to 28. And this will work

[mikehardy]

You are for some reason compiling against and android sdk that is less than 29. You must compile against android sdk 29 from react-native-device-info 2.0.0 and higher

Every project is different so I don’t know why that’s happening for you, but as mentioned above, look at the example here and do what it does.