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I am developing a Flutter app. My app works fine with cloud_firestore and firebase_auth packages when I use them separately. However, when I include both of them together in my pubspecs.yaml file, the build fails and the following message is shown:

Note: /home/saber/Code/mobile_dev/flutter/.pub-cache/hosted/pub.dartlang.org/cloud_firestore-0.7.4/android/src/main/java/io/flutter/plugins/firebase/cloudfirestore/CloudFirestorePlugin.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. Note: /home/saber/Code/mobile_dev/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.5.18/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java uses or overrides a deprecated API. Note: Recompile with -Xlint:deprecation for details. Note: /home/saber/Code/mobile_dev/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_auth-0.5.18/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. Note: /home/saber/Code/mobile_dev/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_core-0.2.5/android/src/main/java/io/flutter/plugins/firebase/core/FirebaseCorePlugin.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.

FAILURE: Build failed with an exception.

  • What went wrong: Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.

    java.lang.RuntimeException: java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex

Here are the depenencies that I have in my pubspec.yaml file:

dependencies: flutter: sdk: flutter firebase_auth: ^0.5.18 cloud_firestore: ^0.7.4

I checked the version of packages and they both seem to be at the latest version.

Any help on resolving this issue would be appreciated!

This might be connected to this issue, but I am not sure.

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2
  • 2
    have you added apply plugin: 'com.google.gms.google-services' in your android/app/build.gradle file? Commented Aug 14, 2018 at 15:47
  • Thanks for your response, yes, I have already added this to my build.gradle file. Commented Aug 15, 2018 at 5:17

6 Answers 6

Reset to default
6

Update your gradle version. I was facing the same issue,i have solved it by using below steps.

Step 1: in app/build.gradle

 apply plugin: 'com.google.gms.google-services' defaultConfig { minSdkVersion 16 targetSdkVersion 28 versionCode flutterVersionCode.toInteger() versionName flutterVersionName testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" ****multiDexEnabled true**** }

Step 2: change gradle version dependencies in android/build.gradle

classpath 'com.android.tools.build:gradle:3.4.1' classpath 'com.google.gms:google-services:3.2.0'

Step 3: latest version of firebase_auth and cloud_firestore in pubspec.ymal

 cloud_firestore: ^0.12.5+1 firebase_auth: ^0.11.1+6 google_sign_in: ^4.0.2
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6

For me work just change the minSDKVersion to 23 in the app build.gradle.

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1

You need to follow this setup:

Open android/app/build.gradle and add at the bottom of the file:

apply plugin: 'com.google.gms.google-services'

and in the android/build.gradle add the following:

buildscript { repositories { // ,,, } dependencies { // ... classpath 'com.google.gms:google-services:3.2.1' } }
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I have already followed this setup. Note that each of the packages works fine when I use it individually. I only get the error when I add both packages to the dependencies.
1

Use only this dependencies in android/build.gradle and remove any other dependencies

classpath 'com.android.tools.build:gradle:3.1.2' classpath 'com.google.gms:google-services:3.2.1'

You have to use this versions in pubspec.yaml 

firebase_auth: 0.5.11 google_sign_in: 3.0.4 cloud_firestore: 0.7.3

Because these versions have updated gradle tooling.

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1

Following update should resolve the issue:

Update android/gradle/wrapper/gradle-wrapper.properties

to distributionUrl=https\://services.gradle.org/distributions/gradle-6.0.1-all.zip

and update the dependencies and versions

in android/build.gradle

to dependencies { classpath 'com.android.tools.build:gradle:3.5.3' classpath 'com.google.gms:google-services:4.3.2'

and android/build.gradle yet

buildscript { ext.kotlin_version = '1.3.61'

in pubspec.yaml

firebase_core: ^0.4.2+1 cloud_firestore: ^0.12.11
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0

  1. Upgrade your gradle in app/build.gradle

  2. run flutter pub upgrade to get latest dependencies !

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