Flutter Projects & Android X Migration Issues

Question

I just created a new flutter project, added a few plugins and I\'m getting the plugin switched to android x therefore i need to switch to android x. I\'ve tried all the diff

Answer 1

As you are creating a new project, just follow @harsh 's answer and you're done.

However, as I recently upgraded my existing app to use new plugins, I had to migrate to AndroidX as well... and the default procedure in the official instructions didn't work, which is using Android Studio to migrate the project - it said "No usages found!".

So what I did was:

1. updated Android Studio to 3.3
2. tried menu Refactor > Migrate to AndroidX
3. got "No usages found" (if you manage to do it here instead, stop! you're done! ... actually, you can give this answer a try before continuing)
4. opened android/gradle.properties and added

android.useAndroidX=true
android.enableJetifier=true

5. opened android/build.gradle and changed

   • com.android.tools.build:gradle to version 3.3.0
   • com.google.gms:google-services to version 4.2.0

6. opened android/app/build.gradle and

   • changed compileSdkVersion to 28
   • replaced android.support.test.runner.AndroidJUnitRunner to androidx.test.runner.AndroidJUnitRunner
   • replaced com.android.support.test:runner to androidx.test:runner:1.1.0
   • replaced com.android.support.test.espresso:espresso-core to androidx.test.espresso:espresso-core:3.1.0
   • in my case that was it, but here's the complete list of required replacements

7. opened android/gradle/wrapper/gradle-wrapper.properties and changed distributionUrl to https\://services.gradle.org/distributions/gradle-4.10.2-all.zip (you might have to use 5.4.1, please see update below)

8. executed flutter clean

And contrary to what I expected, IT WORKED! :)

UPDATE (2019 October 27th)

When updating my app to flutter v1.9.1+hotfix.5, as I use app signing, I was stuck with the error SigningConfig "release" is missing required property "storePassword" and in the end it was the gradle version from step 7 above. So now I'm using 5.4.1 as suggested in this wiki.

[android/gradle/wrapper/gradle-wrapper.properties]

distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip

Answer 2

I faced the similar problem.

This Medium article helped me to find 75% solution for my problem

I followed the steps mentioned in this article. and I'm stuck in the end

Android studio is not allowed me to open android module (folder) from the project structure directly. So I opend manually in the new window of android studio.

Android is not refactored the gradle testRunner classpath androidTestImplementation it is prompting like is dependent So then I manually replaced all the paths like.

• replaced android.support.test.runner.AndroidJUnitRunner to androidx.test.runner.AndroidJUnitRunner
• replaced com.android.support.test:runner to androidx.test:runner:1.1.0
• replaced com.android.support.test.espresso:espresso-core to androidx.test.espresso:espresso-core:3.1.0

and at the end I added to android/gradle.properties

android.useAndroidX=true
android.enableJetifier=true

Then ran the application. ;) after that androidX warning disappeared.

Answer 3

Faced with the same issue.

In my build.gradle compileSdkVersion and targetSdkVersion were already set to 28. minSdkVersion was set to 23.

Had already added android.useAndroidX=true android.enableJetifier=true to my android/graddle.properties.

After adding all these still migrating to AndroidX was not possible. When doing so a message pop up saying "No usage found in this project"

Adding the following code to my app/build.gradle solved the issue.

android {

defaultConfig {
    ...
      minSdkVersion 23 
      targetSdkVersion 28
      multiDexEnabled true
}

}

dependencies {

implementation 'com.android.support:multidex:1.0.3'

}