Build failed with "Namepace not specified" error

[prtkgrg]

[Shinku1014]

edit android/settings.gradle

plugins {
id "com.android.application" version "7.4.2" apply false
}

edit android/gradle/wrapper/gradle-wrapper.properties

distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.3-all.zip

My colleague told me to do so. I don't know why but it works.

[michalss]

i do have a same issue... any fix would be greate.

[BrokenRepository]

edit android/settings.gradle

plugins {
id "com.android.application" version "7.4.2" apply false
}

edit android/gradle/wrapper/gradle-wrapper.properties

distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.3-all.zip

My colleague told me to do so. I don't know why but it works.

This fixes the issue for me too. Also it works because you are setting the version of gradle you use to be compatible with the one flutter_js uses. As for if any other issues will pop up because of it, I guess I'll find out eventually.

[michalss]

that is the problem i dont want/ i cannot downgrade gradle.. :(

[evanhh191]

that is the problem i dont want/ i cannot downgrade gradle.. :(

Oh, in that case, you'll have to set up the package as a local dependency and go into their gradle files and update them to match yours. If you need help doing it, chatgpt and google are your friends.

I ended up having to set up a local dependency anyway in order to get a proper release build, so you may as well.

[emilekm2142]

If you run newest dart, flutter and gradle you probably have to edit the plugin

FAILURE: Build failed with an exception.

• What went wrong:
  Could not open cp_settings generic class cache for settings file 'C:\Users\emile\Documents\Code\XXXXXX\wear\android\settings.gradle' (C:\Users\emile.gradle\caches\7.6.3\scripts\336uqv0bm2kn9xc0ul77aekqb).

BUG! exception in phase 'semantic analysis' in source unit 'BuildScript' Unsupported class file major version 65

• 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.

• Get more help at https://help.gradle.org

BUILD FAILED in 2s

edit android/settings.gradle

plugins {
id "com.android.application" version "7.4.2" apply false
}

edit android/gradle/wrapper/gradle-wrapper.properties

distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.3-all.zip

My colleague told me to do so. I don't know why but it works.

HERE IS A FIX:
Download this repo. Copy to root folder of your project (same place where your pubspec lies).

add

flutter_js:
   path: flutter_js

to your pubspec dependencies

Delete EXAMPLES subproject
Go to android/gradle/wrapper/gradle-wrapper.properties and change distributionUrl version number to the one your are using in your project. You can check it in your gradle-wrapper.properties in the root app (ctrl+shift+f, distributionUrl).

Go to flutter_js/android/build.gradle and edit
dependencies {
classpath 'com.android.tools.build:gradle:X.X.X'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
so that X.X.X is the same version you used to modify previous file.
Go to flutter_js/android/build.gradle and add namespace 'io.abner.flutter_js' to android{} section
delete package property from in android/src/main/AndroidManifest.xml

You can leave a reaction if this helps <3

[denny99]

I am not quite sure if the gradle version conflict is actually the issue here.

The latest AGP just requires the namespace attribute to be present in the build.gradle.

I've only edited the build.gradle manually and added the namespace attribute. It compiles and runs without any issue.

[freemansoft]

edit android/settings.gradle

plugins {
id "com.android.application" version "7.4.2" apply false
}

edit android/gradle/wrapper/gradle-wrapper.properties

distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.3-all.zip

My colleague told me to do so. I don't know why but it works.

This is you downgrading the plugin version which isn't a viable long term solution.

[timovandeput]

An alternative fix is to add all missing namespaces by adding this snippet to the project gradle.build just after the first "subprojects" statement. This avoids having to fork or clone the original library into your project.

subprojects {
    afterEvaluate { project ->
        if (project.hasProperty('android')) {
            project.android {
                if (namespace == null) {
                    namespace project.group
                }
            }
        }
    }
}

Kudos to this Stack Overflow answer by Dmytro Puzak.

Note that this solution might lead you to another known Flutter problem: "AAPT: error: resource android:attr/lStar not found." (See this GitHub issue)

A solution from that GitHub thread is this additional snippet:

subprojects {
    afterEvaluate { project ->
        if (project.extensions.findByName("android") != null) {
            Integer pluginCompileSdk = project.android.compileSdk
            if (pluginCompileSdk != null && pluginCompileSdk < 31) {
                project.logger.error(
                        "Warning: Overriding compileSdk version in Flutter plugin: "
                                + project.name
                                + " from "
                                + pluginCompileSdk
                                + " to 31 (to work around https://issuetracker.google.com/issues/199180389)."
                                + "\nIf there is not a new version of " + project.name + ", consider filing an issue against "
                                + project.name
                                + " to increase their compileSdk to the latest (otherwise try updating to the latest version)."
                )
                project.android {
                    compileSdk 31
                }
            }
        }
    }
    
    project.buildDir = "${rootProject.buildDir}/${project.name}"
    project.evaluationDependsOn(":app")
}

Credits for this solution go to Gray Mackall and Dick Verweij.