Getting "Cannot get property 'android' on null object"

[markdavies]

Hi there,

I'm on a Mac trying to get an Android build running on an emulator, but am running into this error when I run yarn react-native run-android.

A problem occurred evaluating project ':react-native-firebase_analytics'.
> Cannot get property 'android' on null object

* Where:
Build file '<project root>/node_modules/@react-native-firebase/analytics/android/build.gradle' line: 33

I have the following packages installed:

"@react-native-firebase/analytics": "^11.0.0",
"@react-native-firebase/app": "^11.0.0",
"@react-native-firebase/crashlytics": "^11.0.0",
"@react-native-firebase/messaging": "^11.0.0",

I feel like I'm doing something fairly basic incorrectly....

Cheers,
Mark

[mikehardy]

Something very fundamental is failing yes

react-native-firebase/packages/analytics/android/build.gradle

Lines 23 to 33 in e7d7833

	def appProject
	if (findProject(':@react-native-firebase_app')) {
	appProject = project(':@react-native-firebase_app')
	} else if (findProject(':react-native-firebase_app')) {
	appProject = project(':react-native-firebase_app')
	} else {
	throw new GradleException('Could not find the react-native-firebase/app package, have you installed it?')
	}
	def packageJson = PackageJson.getForProject(project)
	def appPackageJson = PackageJson.getForProject(appProject)
	def firebaseBomVersion = appPackageJson['sdkVersions']['android']['firebase']

In no case should analytics not be able find the app package and derive the correct SDK versions.

I suspect some old versions of something. This example-project-generator should work, and can be used as a comparison tool to find the badness so you can evict it https://github.com/mikehardy/rnfbdemo/blob/master/make-demo.sh