CODEWITHSUNDEEP
androidgradleflutterdart
riki
riki

Reputation: 1715

Your app isn't using AndroidX - Flutter doesn't allow me to generate apk

I developed an app in flutter with Visual Studio code on Mac. I ran the application without any kind of problem on IOS. I also installed it on a physical device and it works perfectly, but I have a problem generating the Android project study and its APK on with flutter.

Message: 

flutter build appbundle
[!] Your app isn't using AndroidX.
    To avoid potential build failures, you can quickly migrate your app by following the
    steps on ...
Running Gradle task 'bundleRelease'...                                  
Note: Some input files use unchecked or unsafe operations.      
Running Gradle task 'bundleRelease'...                                                     Note: Recompile with -Xlint:unchecked for details.              
Running Gradle task 'bundleRelease'...                                                                                                        
Running Gradle task 'bundleRelease'... Done                       217,9s (!)
Gradle build failed to produce an .aab file. It's likely that this file was generated under
/Users/riccardo/Desktop/QuoteFlutter/quote/build, but the tool couldn't find it.

Upvotes: 7

Views: 24373

Answers (8)

Mohammed Fouad
Mohammed Fouad

Reputation: 98

this because your project is missing gradle.prperties file >> open terminal in android studio or vs code and write "flutter create ." it will create missing file one of them is gradle.properties.

Upvotes: 4

Mohsin AR
Mohsin AR

Reputation: 3108

its August 2021

Answer: if you are not using android studio as i am using vscode.

add below lines to flutter_app_path/android/gradle.properties.

android.useAndroidX=true
android.enableJetifier=true

Google introduced android jetpack(another topic) in which AndroidX package name and namespace default for jetpack libraries and minimum support library 28 required what i guess now flutter team wants to migrate flutter support to android jetpack near future. come to point now migrating to androidx make sure your project has support library 28

add below lines to flutter_app_path/android/app/build.gradle.

android {
    compileSdkVersion 28
// other lines of code
}

Optional Story i had same issue when i cloned my old flutter repo if you have cloned flutter legacy app repo from github and your development flutter SDK version is 2.2.x first you need to migrate your app to NULL Safety after you should migrate to androidx follow my Answer

Upvotes: 3

Godwin
Godwin

Reputation: 638

in my own case my gradle.properties was missing. I Just created a new gradle.properties file inside the android folder, with the below parameter

org.gradle.jvmargs=-Xmx1536M
android.useAndroidX=true
android.enableJetifier=true
android.enableR8=true

Upvotes: 11

stamhaney
stamhaney

Reputation: 1314

You need to convert your project to AndroidX. Execute the following command:

flutter create --androidx -t <project-type> <new-project-path>

Project types can be app, package or plugin

More information here.

Note: This Problem can also come while building an app downloaded from github, in VSCode with Flutter.

Upvotes: 2

live-love
live-love

Reputation: 52366

I had an old project using Firestore, that I was trying to open, and got this message. I could not find any easy way to fix it.

These were the steps I took to migrate it, hope it helps someone.

Create a new folder.

Then run this command in Terminal, in the folder: 

flutter create --org com.yourdomain your_app_name

Copy the files from lib folder, (and any other modifications from android or ios folders).

Copy google-services.json to android\app folder.

Modify pubspec.yaml and copy the dependencies under dependencies:

Change android\app\build.gradle change version to:

minSdkVersion 21

Add the plugins needed in android\app\build.gradle:

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

In Android\build.gradle file: Add the dependency (with your version):

classpath 'com.google.gms:google-services:4.3.3'

Upvotes: 2

Talha Javed Khan
Talha Javed Khan

Reputation: 420

if you want an APK then use 

flutter clean
flutter build apk

Upvotes: -2

Ali Max
Ali Max

Reputation: 91

you should go to

YourAppName=> android => gradle.properties

inside gradle.properties add these two lines 

android.useAndroidX=true
android.enableJetifier=true

dat should solve it.

Upvotes: 4

Darish
Darish

Reputation: 11481

The error description clearly states that

Your app isn't using AndroidX. To avoid potential build failures, you can quickly migrate your app by following the steps on ...

How to resolve this?

Follow this detailed documentation.

Upvotes: 3

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