Develop Reference

Gradle Sync not working after using Chaquopy Plugin

I am trying to use Chaquopy Plugin in my android project generated with flutter. I mean that when a flutter project is created it generates an android project app folder with it. As Chaquopy does not provide direct support for flutter so I have decided to use this in that flutter generated android app. I went through the line-by-line of Chaquopy's documentation and tried to follow all the instructions given there. But I think I missed something and it is showing errors now and not downloading the Chaquopy Plugin. I am giving my settings.gradle and other gradle files below. Please help me. I am very new to programming and that's why I don't understand these stuff much
Here is the Chaquopy Documentation
Here is my Settings.gradle
include ':app'
def localPropertiesFile = new File(rootProject.projectDir, "local.properties")
def properties = new Properties()
assert localPropertiesFile.exists()
localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
def flutterSdkPath = properties.getProperty("flutter.sdk")
assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
Here is my Project level Build.gradle
buildscript {
ext.kotlin_version = '1.6.10'
repositories {
google()
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:7.2.2'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
}
plugins {
id 'com.chaquo.python' version '12.0.1' apply false
}
allprojects {
repositories {
google()
mavenCentral()
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
task clean(type: Delete) {
delete rootProject.buildDir
}
Here is my App level Build.gradle
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: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
plugins {
id 'com.chaquo.python'
}
android {
compileSdkVersion flutter.compileSdkVersion
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
defaultConfig {
// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
applicationId "com.example.pyflut"
minSdkVersion flutter.minSdkVersion
targetSdkVersion flutter.targetSdkVersion
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
python {
buildPython "C:/Users/super/AppData/Local/Programs/Python/Python310/python.exe"
buildPython "C:/Users/super/AppData/Local/Programs/Python/Python310/python.exe", "-3.10"
}
}
buildTypes {
release {
// TODO: Add your own signing config for the release build.
// Signing with the debug keys for now, so `flutter run --release` works.
signingConfig signingConfigs.debug
}
}
}
flutter {
source '../..'
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
}
Finally here are my errors
Build file 'F:\Pyflut\android\build.gradle' line: 14
Error resolving plugin [id: 'com.chaquo.python', version: '12.0.1', apply: false]
> Could not resolve all dependencies for configuration 'detachedConfiguration1'.
> Could not determine artifacts for com.chaquo.python:com.chaquo.python.gradle.plugin:12.0.1
> Could not get resource 'https://plugins.gradle.org/m2/com/chaquo/python/com.chaquo.python.gradle.plugin/12.0.1/com.chaquo.python.gradle.plugin-12.0.1.jar'.
> Could not HEAD 'https://jcenter.bintray.com/com/chaquo/python/com.chaquo.python.gradle.plugin/12.0.1/com.chaquo.python.gradle.plugin-12.0.1.jar'.
> Read timed out
* Try:
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
* Exception is:
org.gradle.api.GradleException: Error resolving plugin [id: 'com.chaquo.python', version: '12.0.1', apply: false]
at org.gradle.plugin.use.internal.DefaultPluginRequestApplicator.resolveToFoundResult(DefaultPluginRequestApplicator.java:215)...... [Can not copy full error because of character limitaions sorry for that but if it needs then I will provide you that

As others have mentioned, it looks like the Gradle plugin portal is having some problems today.
Since your Flutter-generated project uses the old buildscript and apply syntax to apply the Android plugin, you should probably follow the same pattern with the Chaquopy plugin. That way, the Gradle plugin portal won't even be involved. See this version of the Chaquopy documentation for an example.
Alternatively, you can continue to apply the Chaquopy plugin with the new plugins syntax, but also include mavenCentral in the pluginManagement { repositories } block in settings.gradle. That should allow you to access the plugin without relying on the Gradle plugin portal's mirror. See here for an example.

Jcenter is down mate. We don't know how long it will be because there is no blogpost or social media post about it.
Check it here: https://status.bintray.com/

Flutter build apk failing with BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_' Unsupported class file major version 62

My app used to run perfectly fine a few days ago, I did NOT do any updates and today it is not building.
My system -
HP 15s eq2144au
AMD Ryzen 3 5300U
Flutter doctor -
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel master, 2.13.0-0.0.pre.604, on Microsoft Windows [Version 10.0.22000.613], locale en-IN)
[!] Android toolchain - develop for Android devices (Android SDK version 32.1.0-rc1)
X cmdline-tools component is missing
Run `path/to/sdkmanager --install "cmdline-tools;latest"`
See https://developer.android.com/studio/command-line for more details.
X Android license status unknown.
Run `flutter doctor --android-licenses` to accept the SDK licenses.
See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.
[√] Chrome - develop for the web
[√] Visual Studio - develop for Windows (Visual Studio Community 2019 16.11.11)
[√] Android Studio (version 2021.1)
[!] Android Studio
X android-studio-dir = /usr/local/android-studio
X Android Studio not found at /usr/local/android-studio
[√] VS Code (version 1.66.2)
[√] Connected device (3 available)
[√] HTTP Host Availability
! Doctor found issues in 2 categories.
The error -
PS C:\Users\my_user_name\Documents\my_project_folder> flutter build apk
Building with sound null safety
Building with Flutter multidex support enabled.
FAILURE: Build failed with an exception.
* Where:
Build file 'C:\Users\my_user_name\Documents\my_project_folder\android\build.gradle' line: 27
* What went wrong:
A problem occurred evaluating root project 'android'.
> A problem occurred configuring project ':app'.
> Could not open proj generic class cache for build file 'C:\Users\my_user_name\Documents\my_project_folder\android\app\build.gradle' (C:\Users\my_user_name\.gradle\caches\6.7\scripts\1l5ett1r4oxtcv991nxlv5dyv).
> BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_' Unsupported class file major version 62
* 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 1s
Running Gradle task 'assembleRelease'... 1,804ms
Gradle task assembleRelease failed with exit code 1
What I have tried -
I have tried setting the compileSdkVersion in the build.gradle file located in project_folder\android\app to 28 and then 30 but that changes nothing.
My build.gradle file located in project_file\android\ -
buildscript {
ext.kotlin_version = '1.6.10'
repositories {
google()
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:4.1.0'
classpath 'com.google.gms:google-services:4.3.10'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
}
allprojects {
repositories {
google()
mavenCentral()
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
task clean(type: Delete) {
delete rootProject.buildDir
}
My build.gradle file located in project_folder/android/app -
def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
localPropertiesFile.withReader('UTF-8') { reader ->
localProperties.load(reader)
}
}
def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}
def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
flutterVersionCode = '1'
}
def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
flutterVersionName = '1.0'
}
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}
android {
compileSdkVersion 30
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
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 myappid
minSdkVersion 21
targetSdkVersion flutter.targetSdkVersion
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
}
}
flutter {
source '../..'
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation platform('com.google.firebase:firebase-bom:29.0.4')
implementation 'com.google.firebase:firebase-analytics'
implementation 'com.android.support:multidex:1.0.3'
}
apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
When I run it on Chrome, it works fine, the problem is only with Android.
Thanks!

Flutter build appbundle Error Could not find method androidExtensions() for arguments

I'm trying to build a release appbundle for an Andriod app using Flutter,
When I run:
flutter build appbundle
I get:
* What went wrong:
A problem occurred evaluating project ':app'.
> No signature of method: build_9z8dp8vvjumdxnixrakr4imyg.android() is applicable for argument
types: (build_9z8dp8vvjumdxnixrakr4imyg$_run_closure3) values: [buil
d_9z8dp8vvjumdxnixrakr4imyg$_run_closure3#775a0064]
I tried to clean+repair cache but its still not working. Flutter doctor works fine.
app\build.gradle file:
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'
}
def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}
apply plugin: 'org.jetbrains.kotlin.android.extensions'
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
androidExtensions {
experimental = true
}
android {
compileSdkVersion 30
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
lintOptions {
disable 'InvalidPackage'
}
defaultConfig {
applicationId "com.example.Application"
minSdkVersion 23
targetSdkVersion 30
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
}
signingConfigs {
release {
keyAlias keystoreProperties['keyAlias']
keyPassword keystoreProperties['keyPassword']
storeFile keystoreProperties['storeFile']
storePassword keystoreProperties['storePassword']
}
}
buildTypes {
release {
// Signing with the debug keys for now, so `flutter run --release` works.
signingConfig signingConfigs.release
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
flutter {
source '../..'
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
// Import the Firebase BoM
implementation platform('com.google.firebase:firebase-bom:27.1.0')
// Add the dependency for the Firebase SDK for Google Analytics
// When using the BoM, don't specify versions in Firebase dependencies
implementation 'com.google.firebase:firebase-analytics'
// Declare the dependency for the Firebase Authentication library
// When using the BoM, you don't specify versions in Firebase library dependencies
implementation 'com.google.firebase:firebase-auth'
// Add the dependencies for any other desired Firebase products
// https://firebase.google.com/docs/android/setup#available-libraries
implementation 'com.facebook.android:facebook-login:[8.1)'
implementation 'com.facebook.android:facebook-android-sdk:[5,6)'
implementation 'com.google.android.material:material:1.1.0'
implementation 'androidx.fragment:fragment:1.0.0'
}
apply plugin: 'com.google.gms.google-services'
android\build.gradle file:
buildscript {
ext.kotlin_version = '1.3.50'
repositories {
google()
jcenter()
mavenCentral()
}
dependencies {
classpath 'com.google.gms:google-services:4.3.5'
classpath 'com.android.tools.build:gradle:4.2.2'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
}
allprojects {
repositories {
google() // Google's Maven repository
jcenter()
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
task clean(type: Delete) {
delete rootProject.buildDir
}
android\key.properties file:
storePassword=123456789
keyPassword=123456789
keyAlias=upload
storeFile=C:\\Users\\User\\Documents\\Application\\upload-keystore.jks
full output:
C:\Users\User\Documents\Application>flutter build appbundle
The plugin `flutter_open_whatsapp` uses a deprecated version of the Android embedding.
To avoid unexpected runtime failures, or future build failures, try to see if this plugin supports the Android V2 embedding. Otherwise, consider removing it since
a future release of Flutter will remove these deprecated APIs.
If you are plugin author, take a look at the docs for migrating the plugin to the V2 embedding: https://flutter.dev/go/android-plugin-migration.
Building without sound null safety
For more information see https://dart.dev/null-safety/unsound-null-safety
Kotlin plugin should be enabled before 'kotlin-android-extensions'
FAILURE: Build failed with an exception.
* Where:
Build file 'C:\Users\User\Documents\Application\android\app\build.gradle' line: 41
* What went wrong:
A problem occurred evaluating project ':app'.
> No signature of method: build_9z8dp8vvjumdxnixrakr4imyg.android() is applicable for argument types: (build_9z8dp8vvjumdxnixrakr4imyg$_run_closure3) values: [buil
d_9z8dp8vvjumdxnixrakr4imyg$_run_closure3#27144de8]
* 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
Running Gradle task 'bundleRelease'... 2,990ms
Gradle task bundleRelease failed with exit code 1

Try opening the /android directory as a project in android studio and build the release without using Flutter.
Even try using Java for the project and see if it works or not ??
if it works, then there might be some issue with your Kotlin version.

problem with firebase auth when i added to pubspec.yaml

Launching lib\main.dart on Android SDK built for x86 in debug mode...
Running Gradle task 'assembleDebug'...
Parameter format not correct -
FAILURE: Build failed with an exception.
What went wrong:
Execution failed for task ':firebase_core:javaPreCompileDebug'.
Could not resolve all files for configuration ':firebase_core:debugCompileClasspath'.
Could not find firebase-common.jar (com.google.firebase:firebase-common:16.1.0).
Searched in the following locations:
https://dl.google.com/dl/android/maven2/com/google/firebase/firebase-common/16.1.0/firebase-common-16.1.0.jar
Could not find legacy-support-v4.jar (androidx.legacy:legacy-support-v4:1.0.0).
Searched in the following locations:
https://dl.google.com/dl/android/maven2/androidx/legacy/legacy-support-v4/1.0.0/legacy-support-v4-1.0.0.jar
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 13s
The built failed likely due to AndroidX incompatibilities in a plugin. The tool is about to try using Jetfier to solve the incompatibility.
Building plugin firebase_auth...
Running Gradle task 'assembleAarRelease'...
FAILURE: Build failed with an exception.
What went wrong:
A problem occurred configuring root project 'firebase_auth'.
SDK location not found. Define location with sdk.dir in the local.properties file or with an ANDROID_HOME environment variable.
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 1s
Exception: The plugin firebase_auth could not be built due to the issue above.

add following line in gradle.properties
android.useAndroidX=true

build.gradle
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.google.gms.google-services'
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
android {
compileSdkVersion 28
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
lintOptions {
disable 'InvalidPackage'
}
defaultConfig {
// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
applicationId "co.test.bubbleapp"
minSdkVersion 21
targetSdkVersion 28
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
}
buildTypes {
release {
// TODO: Add your own signing config for the release build.
// Signing with the debug keys for now, so `flutter run --release` works.
signingConfig signingConfigs.debug
}
}
}
flutter {
source '../..'
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
}
___________________________________
buildscript {
ext.kotlin_version = '1.3.50'
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.5.0'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
classpath 'com.google.gms:google-services:3.2.1'
}
}
allprojects {
repositories {
google()
jcenter()
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
task clean(type: Delete) {
delete rootProject.buildDir
}

Onesignal is sticking and not removing in gradle

I was installing Onesignal in my app but suddenly i got this error.
I Removed everything connected in onesignal and still getting this error..
VS CODE ERROR while debugging :
* Error running Gradle:
ProcessException: Process exited abnormally:
Starting a Gradle Daemon, 2 incompatible Daemons could not be reused, use --status for details
> Configure project :app
WARNING: API 'variant.getJavaCompile()' is obsolete and has been replaced with 'variant.getJavaCompileProvider()'.
It will be removed at the end of 2019.
For more information, see https://d.android.com/r/tools/task-configuration-avoidance.
To determine what is calling variant.getJavaCompile(), use -Pandroid.debug.obsoleteApi=true on the command line to display a stack trace.
> Configure project :firebase_admob
Project evaluation failed including an error in afterEvaluate {}. Run with --stacktrace for details of the afterEvaluate {} error.
FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred configuring project ':firebase_admob'.
> Could not resolve all artifacts for configuration ':firebase_admob:classpath'.
> Could not find any matches for gradle.plugin.com.onesignal:onesignal-gradle-plugin:[0.12.4, 0.99.99] as no versions of gradle.plugin.com.onesignal:onesignal-gradle-plugin are available.
Searched in the following locations:
- https://dl.google.com/dl/android/maven2/gradle/plugin/com/onesignal/onesignal-gradle-plugin/maven-metadata.xml
- https://dl.google.com/dl/android/maven2/gradle/plugin/com/onesignal/onesignal-gradle-plugin/
- https://jcenter.bintray.com/gradle/plugin/com/onesignal/onesignal-gradle-plugin/maven-metadata.xml
- https://jcenter.bintray.com/gradle/plugin/com/onesignal/onesignal-gradle-plugin/
Required by:
project :firebase_admob
* 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 15s
Command: C:\Users\Anonymous\Desktop\newwwapp\android\gradlew.bat app:properties
Android Studio error :
Could not find any matches for gradle.plugin.com.onesignal:onesignal-gradle-plugin:[0.12.4, 0.99.99] as no versions of gradle.plugin.com.onesignal:onesignal-gradle-plugin are available.
Searched in the following locations:
- https://dl.google.com/dl/android/maven2/gradle/plugin/com/onesignal/onesignal-gradle-plugin/maven-metadata.xml
- https://dl.google.com/dl/android/maven2/gradle/plugin/com/onesignal/onesignal-gradle-plugin/
- https://jcenter.bintray.com/gradle/plugin/com/onesignal/onesignal-gradle-plugin/maven-metadata.xml
- https://jcenter.bintray.com/gradle/plugin/com/onesignal/onesignal-gradle-plugin/
Required by:
project :firebase_admob
Adnroid/Build.gradle icludes :
buildscript {
ext.kotlin_version = '1.2.71'
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.3.0'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
classpath 'com.google.gms:google-services:4.2.0'
}
}
allprojects {
repositories {
google()
jcenter()
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
task clean(type: Delete) {
delete rootProject.buildDir
}
and this is the app/build.gradle :
def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
localPropertiesFile.withReader('UTF-8') { reader ->
localProperties.load(reader)
}
}
def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}
def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
flutterVersionCode = '1'
}
def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
flutterVersionName = '1.0'
}
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
android {
compileSdkVersion 28
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
lintOptions {
disable 'InvalidPackage'
}
defaultConfig {
// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
applicationId "com.example.lottothesmartapp"
minSdkVersion 16
targetSdkVersion 28
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
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"
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
}
I remember that i did not change any inner codes in gradle i just added some codes implements in the build.gradle only and debugged.
then removed the added codes to remove the error shown above and sticked without any changes.
Any solution please ?

Do you load the onesignal library from pubspec.yaml? Maybe it's in the pubspec.lock.