Adds arm64-v8a and x86_64 for supporting 64-bit architecture

android/app/build.gradle

@@ -110,7 +110,7 @@ android {
         versionCode 3
         versionName "0.1905.29-beta"
         ndk {
-            abiFilters "armeabi-v7a", "x86"
+            abiFilters "armeabi-v7a", "x86", "arm64-v8a", "x86_64"
         }
         testBuildType System.getProperty('testBuildType', 'debug')  // This will later be used to control the test apk build type
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
@@ -145,7 +145,7 @@ android {
         variant.outputs.each { output ->
             // For each separate APK per architecture, set a unique version code as described here:
             // http://tools.android.com/tech-docs/new-build-system/user-guide/apk-splits
-            def versionCodes = ["armeabi-v7a":1, "x86":2, "arm64-v8a": 3, "x86_64": 4]
+            def versionCodes = ["armeabi-v7a":1, "x86":2, "arm64-v8a":3, "x86_64":4]
             def abi = output.getFilter(OutputFile.ABI)
             if (abi != null) {  // null for the universal-debug, universal-release variants
                 output.versionCodeOverride =