Update firebase dependencies

Update version firebase auth, firebase analytics, gradle

Author: dishantwalia

android/build.gradle

@@ -7,25 +7,26 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.2'
+          classpath 'com.android.tools.build:gradle:3.5.0'
     }
 }
 
 apply plugin: 'com.android.library'
 
-def DEFAULT_COMPILE_SDK_VERSION             = 27
-def DEFAULT_BUILD_TOOLS_VERSION             = "27.0.3"
-def DEFAULT_TARGET_SDK_VERSION              = 27
-def DEFAULT_FIREBASE_VERSION                = "16.0.1"
-def DEFAULT_SUPPORT_LIB_VERSION             = "27.0.0"
+def DEFAULT_COMPILE_SDK_VERSION             = 28
+def DEFAULT_BUILD_TOOLS_VERSION             = "28.0.3"
+def DEFAULT_TARGET_SDK_VERSION              = 28
+def DEFAULT_FIREBASE_ANALYTICS_VERSION      = "17.2.3"
+def DEFAULT_FIREBASE_AUTH_VERSION           = "19.2.0"
+def DEFAULT_SUPPORT_LIB_VERSION             = "28.0.0"
 
 
 
 android {
     compileSdkVersion rootProject.hasProperty('compileSdkVersion') ? rootProject.compileSdkVersion : DEFAULT_COMPILE_SDK_VERSION
     buildToolsVersion rootProject.hasProperty('buildToolsVersion') ? rootProject.buildToolsVersion : DEFAULT_BUILD_TOOLS_VERSION
     defaultConfig {
-        minSdkVersion 16
+        minSdkVersion 21
         targetSdkVersion rootProject.hasProperty('targetSdkVersion') ? rootProject.targetSdkVersion : DEFAULT_TARGET_SDK_VERSION
         versionCode 1
         versionName "1.0"
@@ -47,10 +48,11 @@ repositories {
 
 dependencies {
     //noinspection GradleCompatible
-    def firebaseVersion = rootProject.hasProperty('firebaseVersion')  ? rootProject.firebaseVersion : DEFAULT_FIREBASE_VERSION
+    def firebaseAnalyticsVersion = rootProject.hasProperty('firebaseAnalyticsVersion')  ? rootProject.firebaseAnalyticsVersion : DEFAULT_FIREBASE_ANALYTICS_VERSION
+    def firebaseAuthVersion = rootProject.hasProperty('firebaseAuthVersion')  ? rootProject.firebaseAuthVersion : DEFAULT_FIREBASE_AUTH_VERSION
     def supportLibVersion =  rootProject.hasProperty('supportLibVersion')  ? rootProject.supportLibVersion : DEFAULT_SUPPORT_LIB_VERSION
     implementation "com.android.support:appcompat-v7:$supportLibVersion"
     implementation "com.facebook.react:react-native:+"
-    implementation "com.google.firebase:firebase-core:$firebaseVersion"
-    implementation "com.google.firebase:firebase-auth:$firebaseVersion"
-}
+    implementation "com.google.firebase:firebase-analytics:$firebaseAnalyticsVersion"
+    implementation "com.google.firebase:firebase-auth:$firebaseAuthVersion"
+}