fix: hotfix building without an app.json file

Author: DoctorJohn

android/build.gradle

@@ -74,29 +74,28 @@ project.ext {
 
 apply from: file("./app-json.gradle")
 
-def isManagedExpoProject = !rootProject.file("android").exists() && !rootProject.file("ios").exists()
 def appJSONGoogleMobileAdsAppIDString = ""
 def appJSONGoogleMobileAdsDelayAppMeasurementInitBool = false
 def appJSONGoogleMobileAdsOptimizeInitializationBool = true
 def appJSONGoogleMobileAdsOptimizeAdLoadingBool = true
 
-if (rootProject.ext.has("googleMobileAdsJson")) {
+if (rootProject.ext.has("googleMobileAdsJson") && rootProject.ext.googleMobileAdsJson) {
   appJSONGoogleMobileAdsAppIDString = rootProject.ext.googleMobileAdsJson.getStringValue("android_app_id", "")
   appJSONGoogleMobileAdsDelayAppMeasurementInitBool = rootProject.ext.googleMobileAdsJson.isFlagEnabled("delay_app_measurement_init", false)
   appJSONGoogleMobileAdsOptimizeInitializationBool = rootProject.ext.googleMobileAdsJson.isFlagEnabled("optimize_initialization", true)
   appJSONGoogleMobileAdsOptimizeAdLoadingBool = rootProject.ext.googleMobileAdsJson.isFlagEnabled("optimize_ad_loading", true)
 }
 
-if (!appJSONGoogleMobileAdsAppIDString && !isManagedExpoProject) {
+if (!appJSONGoogleMobileAdsAppIDString) {
   println "\n\n\n"
   println "**************************************************************************************************************"
   println "\n\n\n"
-  println "ERROR: react-native-google-mobile-ads requires an 'android_app_id' property inside a 'react-native-google-mobile-ads' key in your app.json."
-  println "  No android_app_id property was found in this location. The native Google Mobile Ads SDK will crash on startup without it."
+  println "WARNING: react-native-google-mobile-ads requires an 'android_app_id' property inside a 'react-native-google-mobile-ads' key in your app.json."
+  println "         No android_app_id property was found in this location. The native Google Mobile Ads SDK will crash on startup without it."
+  println "         You can safely ignore this warning if you are using our Expo config plugin."
   println "\n\n\n"
   println "**************************************************************************************************************"
   println "\n\n\n"
-  System.exit(1)
 }
 
 android {

ios_config.sh

@@ -88,12 +88,6 @@ while true; do
   _CURRENT_LOOKUPS=$((_CURRENT_LOOKUPS+1))
 done
 
-# Bail out if project is a managed Expo project:
-if [[ ! -d "${PROJECT_DIR}/ios" ]] && [[ ! -d "${PROJECT_DIR}/android" ]]; then
-  echo "info: Project does not contain an ios or android folder, assume it's a managed Expo project using our Expo Config Plugin."
-  exit 0
-fi
-
 if [[ ${_SEARCH_RESULT} ]]; then
   _JSON_OUTPUT_RAW=$(cat "${_SEARCH_RESULT}")
   _RN_ROOT_EXISTS=$(ruby -KU -e "require 'rubygems';require 'json'; output=JSON.parse('$_JSON_OUTPUT_RAW'); puts output[$_JSON_ROOT]" || echo '')
@@ -169,8 +163,9 @@ if ! [[ -f "${_TARGET_PLIST}" ]]; then
 fi
 
 if ! [[ $_IOS_APP_ID ]]; then
-  echo "error: ios_app_id key not found in react-native-google-mobile-ads key in app.json. App will crash without it."
-  exit 1
+  echo "warning: ios_app_id key not found in react-native-google-mobile-ads key in app.json. App will crash without it."
+  echo "         You can safely ignore this warning if you are using our Expo config plugin."
+  exit 0
 fi
 
 for plist in "${_TARGET_PLIST}" "${_DSYM_PLIST}" ; do