Cannot resolve symbol GradleException in Flutter application's android/app/build.gradle file

Question

I have a small Flutter app and AndroidStudio (Arctic Fox 2020.3.1 Patch 2) is complaining about the following error

in android/app/build.gradle:

Cannot resolve symbol 'GradleException'

flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 2.5.1, on macOS 11.6 20G165 darwin-x64, locale en-US)
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
[✓] Xcode - develop for iOS and macOS
[✓] Chrome - develop for the web
[✓] Android Studio (version 2020.3)
[✓] IntelliJ IDEA Ultimate Edition (version 2021.2.2)
[✓] Connected device (3 available)

• No issues found!

I tried the suggestions found online so far, like defining the SDK (was already defined, changing it or removing it and setting it again didn't help).

Occasionally, I also got

in android/app/build.gradle:

Cannot resolve symbol 'Properties'

in android/settings.gradle:

Cannot resolve symbol 'File' Cannot resolve symbol 'Properties'

edit

Here's the content of the build.gradle. It's more or less the one generated with flutter create

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
    flutterVersionCode = '1'
}

def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
    flutterVersionName = '1.0'
}

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    compileSdkVersion 30

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    kotlinOptions {
        jvmTarget = '1.8'
    }
    
    lintOptions {
        abortOnError false
    }

    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "org.myorg.myapp"
        minSdkVersion 21
        targetSdkVersion 30
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.debug
        }
    }
}

flutter {
    source '../..'
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
//  implementation 'com.google.android.gms:play-services-ads:20.4.0'
}

Does this answer your question? what is causing "cannot resolve symbol GradleException" in a flutter project? — Gert Arnold
– Gert Arnold, Commented Jan 24, 2022 at 19:02

Aaydin · Accepted Answer · 2022-11-05 08:55:21Z

2

You can use FileNotFoundException instead of GradleException.

if (flutterRoot == null) {
    throw new FileNotFoundException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

answered Nov 5, 2022 at 8:55

Aaydin

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Comments

JustinW · Accepted Answer · 2021-09-28 13:14:16Z

0

Your problem can be solved by importing the class GradleException. Just add this code import org.gradle.api.GradleException. If the issue still persists, you may have to reinstall Gradle. You can do this by:-

Invalidate Caches and Restart (Recommended).
In the gradle-wrapper.properties file, in the distribution URL, change the version to the latest supported version, I use 7.1.1
If the problem is with one project only, create a new Flutter project, and place your class files in the new project, as a new build.gradle would be generated, it happens due to corrupted gradle files or bad syncs.

edited Sep 28, 2021 at 13:14

answered Sep 28, 2021 at 12:06

JustinW

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4 Comments

D. Joe Over a year ago

Cannot resolve symbol 'gradle'

JustinW Over a year ago

Fixed, try now.

D. Joe Over a year ago

I have 7.2 in the gradle wrapper. Invalidating caches and restarting didn't work, either. I have more Flutter projects, and this is the only one that has this issue, so it's not a problem of AndroidStudio or Gradle.

JustinW Over a year ago

If the problem is with one project only, create a new Flutter project, and place your class files in the new project, as a new build.gradle would be generated, it happens due to corrupted gradle files or bad syncs

Safeeda Kabeer · Accepted Answer · 2022-09-26 10:47:44Z

0

I resolve this problem by setting project_structure->module->dependancy->select Module SDK as android latest . there was no selection in my project as Module SDK. After that File->Invalidate Caches->Restart.

This will help to resolve the problem.

I had issues in build.gradle file (properties and GradleException). Actually we can remove the error by removing the new keyword in front of them. But that is not the real problem and Solution. Do this. Hope you guys it will work.

answered Sep 26, 2022 at 10:47

Safeeda Kabeer

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