Plugin with id 'kotlin-android' not found - fixed

[Bardiamist]

FIXED in 10.1.1

Thanks all for the report, sorry again 😢

Original report follows:

Bug description:
Cant build project by Android Studio with next error:

A problem occurred evaluating project ':react-native-webview'.
> Plugin with id 'kotlin-android' not found.

To Reproduce:
I just updated react-native-webview from 9.4.0 to 10.1.0.

Expected behavior:
Build project successfully.

Environment:

• OS: macOS
• OS version: 10.15.4
• react-native version: 0.62.2
• react-native-webview version: 10.1.0

[EhteshamAnwar]

came here to add this issue.

[EhteshamAnwar]

To Reproduce:
I just installed react-native-webview ( using npm i react-native-webview)
then tried to build my project got this error

1: Task failed with an exception.

• Where:
  Build file 'C:\Users\Dell\Documents\apps\audiomessage\node_modules\react-native-webview\android\build.gradle' line: 27

• What went wrong:
  A problem occurred evaluating project ':react-native-webview'.

Plugin with id 'kotlin-android' not found.

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
  ==============================================================================

2: Task failed with an exception.

• What went wrong:
  A problem occurred configuring project ':react-native-webview'.

compileSdkVersion is not specified.

[Bardiamist]

I added in android/build.gradle

buildscript {
    ext {
        ...
        kotlinVersion = "1.3.72"
    }
    dependencies {
        ...
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
    }
}

That helped but I waiting guide from maintainers.

EDIT FROM MAINTAINER: this won't be required in versions > 10.1.0, you might want to remove it if you don't wanna risk importing 2 different versions for no reason.
BTW this was a good workaround, thanks 😄

[FalconIA]

Same issue.

[egiesem]

Same issue

[arnriu]

Same issue, no luck with @Bardiamist comment.

[mars-lan]

Most likely broken by #1230

[Benzer1406]

Same issue

[mikehardy]

Yes, effectively reverting #1230 by replacing node_modules/react-native-webview/android/build.gradle with the file before the change (https://raw.githubusercontent.com/react-native-community/react-native-webview/e6241cbb6aba6e98b2e0a82011ec0aabaca854b3/android/build.gradle) fixes things

You can use the ever-impressive / always-useful patch-package (https://github.com/ds300/patch-package) to persist the change after you've reverted locally in order to move forward

@Titozzz / @SaeedZhiany -> #1230 needs a revert 🙏

[Titozzz]

Thanks for the report, it's 2AM here, but I'll look into it first thing tomorrow, until then please use V9

[mikehardy]

Here's a patch-package patch in case anyone wants to stick on v10.x - seems fine otherwise

I tried this exact transform myself (for this module) to conditional gradle inclusion after working on it with @SaeedZhiany in some of the related issues and in the modules I maintain - it's a standard thing that works 100% of the time...except for kotlin and I couldn't figure out why. Until someone does this will be the one module where it doesn't work I suppose but I'm not anti-kotlin - it's just an interoperability thing to figure out. Cheers

react-native-webview+10.1.0.patch.txt

[SaeedZhiany]

I guess the problem is your root projects do not use kotlin Gradle plugin and so the plugin does not loaded on building time and cause error. I can't test it my self right now but I have two solutions in my mind.

1. Users can add the kotlin Gradle plugin to their root project Gradle file, so it guarantees the plugin always be downloaded once and available for build the modules need the plugin, just like the way we try fix AGP problems. (This is my recommended approach, if it works)

2. We can apply the condition only on AGP within dependency section to make sure the kotlin gralde plugin always downloaded and loaded on building time.

However, reverting the PR changes completely is not best solution, we all know what is the side effects.
This is the first module that has problem with the change and it because it has additional dependency on buildscript section.

[Titozzz]

@SaeedZhiany For now I'm gonna make sure we download kotlin for all users, so that's it's not breaking nor requiring changes on their codebases, but I agree we can prob find a better solution so that if you already have kotlin it does not import it. This will come later as this is pretty urgent

[react-native-community-bot]

🎉 This issue has been resolved in version 10.1.1 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[SaeedZhiany]

@SaeedZhiany For now I'm gonna make sure we download kotlin for all users, so that's it's not breaking nor requiring changes on their codebases, but I agree we can prob find a better solution so that if you already have kotlin it does not import it. This will come later as this is pretty urgent

@Titozzz
The library has been upgraded to version 10.x.x (as a major version), so people should expect to break changes. can you please try the solution 1 from this comment (without the patch you already released)? if it's work, we can change the Readme.md and Changelog files to inform users to add the kotlin gradle plugin in their root project. (I have no access to my laptop right now to test it myself).

[Titozzz]

@SaeedZhiany We don't want users to have any native step to perform when installing the library

[mikehardy]

The correct solution is to push a patch upstream in react-native @SaeedZhiany that gets kotlin into people's root projects, then webview can do it, IMHO

[SaeedZhiany]

@mikehardy

I agree with your suggestion, but there are a few RN modules using kotlin in their library, so maybe it's hard right now to convince RN maintainers to put that config in the RN template. (I couldn't convince them yet about putting androidx packages' version in root project if you remember about that)

[Titozzz]

Do it impact users not using Kotlin if we add the dep?

[mikehardy]

@SaeedZhiany hard nevertheless the correct step. Until then @Titozzz I think waiting to merge the currently-reverted PR is the correct action as it removes all user onboarding kotlin work from the module. This is just my opinion but it's tilted heavily towards preserving limited maintainer time from support requests and developer time from needing to do work for an upgrade or initial module integration, both things I'm passionate about.

Upstream went with Swift for 0.62, Maybe it's time for Kotlin in 0.64. If you raise a PR there and tag me I will voice my support and cross-reference this with brief explanation to substantiate

[mikehardy]

@Titozzz yes - if people are not using kotlin directly in their project, and if this is their only kotlin-using module, then with the dep in this module's build.gradle it brings in kotlin where otherwise it wouldn't. But that's android development. Kotlin is a first class citizen, bringing it in is the same as when a cocoapod is using Swift or Flipper uses Swift (that's iOS development, it should be handled)

[Titozzz]

@mikehardy thanks for the confirmation.

[rnmontufar]

I added in android/build.gradle

buildscript {
    ext {
        ...
        kotlinVersion = "1.3.72"
    }
    dependencies {
        ...
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
    }
}

That helped but I waiting guide from maintainers.

EDIT FROM MAINTAINER: this won't be required in versions > 10.1.0, you might want to remove it if you don't wanna risk importing 2 different versions for no reason.
BTW this was a good workaround, thanks 😄

I used that:

buildscript {
ext {
...
kotlinVersion = "1.3.72"
}
dependencies {
...
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
}
}

and
react-native install react-native-webview@10.1.0

Thanks a lot @Bardiamist

[malvnewt]

I added in android/build.gradle

buildscript {
    ext {
        ...
        kotlinVersion = "1.3.72"
    }
    dependencies {
        ...
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
    }
}

That helped but I waiting guide from maintainers.
EDIT FROM MAINTAINER: this won't be required in versions > 10.1.0, you might want to remove it if you don't wanna risk importing 2 different versions for no reason.
BTW this was a good workaround, thanks 😄

I used that:

buildscript {
ext {
...
kotlinVersion = "1.3.72"
}
dependencies {
...
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
}
}

and
react-native install react-native-webview@10.1.0

Thanks a lot @Bardiamist

I am currently learning flutter and the run command comes up with the exact same problem.flutter doctor suggests that all depencies are up to date and no issues.was wondering to go about solving this one.

[ItxAltaf]

classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"

• What went wrong:
  A problem occurred evaluating project ':react-native-camera-kit'.

Could not get unknown property 'kotlin_version' for object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

facing this after above changes

[Vincetroid]

classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"

• What went wrong:
  A problem occurred evaluating project ':react-native-camera-kit'.

Could not get unknown property 'kotlin_version' for object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

facing this after above changes

Same here with react-native-camera-kit

[Vincetroid]

I had to follow these steps:

Change kotlinVersion to kotlin_version

Change minSdkVersion 21 to 23 because of the error:
Manifest merger failed : uses-sdk:minSdkVersion 21 cannot be smaller than version 23 declared in library [:react-native-camera-kit]

Also to:

 compileSdkVersion = 31
 targetSdkVersion = 31

Then:
teslamotors/react-native-camera-kit#434

[AqibCybery]

buildscript {
ext {
buildToolsVersion = "29.0.3"

• // Note: Below change is necessary for pause / resume audio feature. Not for Kotlin.
  

• minSdkVersion = 24
  compileSdkVersion = 29
  targetSdkVersion = 29
  

• kotlinVersion = '1.5.0'
  
  ndkVersion = "20.1.5948944"
  

  }
  repositories {
  google()
  jcenter()
  }
  dependencies {
  classpath("com.android.tools.build:gradle:4.1.0")

• classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
  

  }

[Raymond205]

nawa o

[AlperenMertU]

same issues... I'm getting an error just react-native-vision-camera and react-native-camera-kit libraries. ı'm try tried adding this kotlin_Version = "1.3.72" but doesn't work. Help me pls