How to fix "...error: cannot find symbol" build failure in flutter? - flutter

Question

Can someone help me diagnose what is the error all about? I just can't understand what causing the error. My apologies, I just started learning Flutter this week, and assigned to a project (given only few days to study).
Based on my research, it may be due to some incorrect versions. Although I have tried changing the versions in ..app/build.gradle. But I can't manage to solve it. I have tried these related-stackoverflow but did not work for me.
I also tried moving from one channel to another and run upgrade but same error thrown.
full error message is in the snippet: (I hid it temporarily inside a snippet to shorten the stack description. I will update once the issue is solved.)
user76#user76:~/Documents/Workspace/office/fluter-office(develop)$ flutter run
Using hardware rendering with device Android SDK built for x86. If you notice graphics artifacts, consider enabling software rendering with
"--enable-software-rendering".
Launching lib/main.dart on Android SDK built for x86 in debug mode...
Building with Flutter multidex support enabled.
Warning: Mapping new ns http://schemas.android.com/repository/android/common/02 to old ns http://schemas.android.com/repository/android/common/01
Warning: Mapping new ns http://schemas.android.com/repository/android/generic/02 to old ns http://schemas.android.com/repository/android/generic/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/addon2/02 to old ns http://schemas.android.com/sdk/android/repo/addon2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/addon2/03 to old ns http://schemas.android.com/sdk/android/repo/addon2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/repository2/02 to old ns http://schemas.android.com/sdk/android/repo/repository2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/repository2/03 to old ns http://schemas.android.com/sdk/android/repo/repository2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/sys-img2/03 to old ns http://schemas.android.com/sdk/android/repo/sys-img2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/sys-img2/02 to old ns http://schemas.android.com/sdk/android/repo/sys-img2/01
/home/user76/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappwebview-5.4.3+7/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_webview/InAppWebView.java:280: error: cannot find symbol
settings.setAppCachePath(options.appCachePath);
^
symbol: method setAppCachePath(String)
location: variable settings of type WebSettings
/home/user76/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappwebview-5.4.3+7/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_webview/InAppWebView.java:494: error: cannot find symbol
settings.setAppCacheEnabled(false);
^
symbol: method setAppCacheEnabled(boolean)
location: variable settings of type WebSettings
/home/user76/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappwebview-5.4.3+7/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_webview/InAppWebView.java:504: error: cannot find symbol
settings.setAppCacheEnabled(true);
^
symbol: method setAppCacheEnabled(boolean)
location: variable settings of type WebSettings
/home/user76/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappwebview-5.4.3+7/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_webview/InAppWebView.java:515: error: cannot find symbol
settings.setAppCachePath(ctx.getCacheDir().getAbsolutePath());
^
symbol: method setAppCachePath(String)
location: variable settings of type WebSettings
/home/user76/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappwebview-5.4.3+7/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_webview/InAppWebView.java:517: error: cannot find symbol
settings.setAppCacheEnabled(true);
^
symbol: method setAppCacheEnabled(boolean)
location: variable settings of type WebSettings
/home/user76/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappwebview-5.4.3+7/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_webview/InAppWebView.java:521: error: cannot find symbol
settings.setAppCacheEnabled(false);
^
symbol: method setAppCacheEnabled(boolean)
location: variable settings of type WebSettings
/home/user76/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappwebview-5.4.3+7/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_webview/InAppWebView.java:767: error: cannot find symbol
settings.setAppCachePath(newOptions.appCachePath);
^
symbol: method setAppCachePath(String)
location: variable settings of type WebSettings
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
7 errors
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':flutter_inappwebview:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.
* 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 5s
Running Gradle task 'assembleDebug'... 6.4s
Exception: Gradle task assembleDebug failed with exit code 1
My 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'
}
def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
apply plugin: 'com.google.gms.google-services'
apply plugin: 'com.google.firebase.crashlytics'
android {
compileSdkVersion 33
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
defaultConfig {
// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
applicationId "com.wcc.office_app_android"
minSdkVersion 19
targetSdkVersion 33
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
multiDexEnabled true
}
signingConfigs {
release {
keyAlias keystoreProperties['keyAlias']
keyPassword keystoreProperties['keyPassword']
storeFile keystoreProperties['storeFile'] ? file(keystoreProperties['storeFile']) : null
storePassword keystoreProperties['storePassword']
}
debug {
keyAlias keystoreProperties['keyAlias']
keyPassword keystoreProperties['keyPassword']
storeFile keystoreProperties['storeFile'] ? file(keystoreProperties['storeFile']) : null
storePassword keystoreProperties['storePassword']
}
}
buildTypes {
release {
signingConfig signingConfigs.release
}
debug {
signingConfig signingConfigs.debug
}
}
flavorDimensions "environment"
productFlavors {
dev {
dimension "environment"
applicationIdSuffix ".dev"
versionNameSuffix "-Dev"
}
stag {
dimension "environment"
applicationIdSuffix ".stag"
versionNameSuffix "-Stag"
}
prod {
dimension "environment"
}
}
lintOptions {
checkReleaseBuilds false
}
}
flutter {
source '../..'
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'com.android.support:multidex:1.0.3'
}
My specifications
java 18.0.2.1 2022-08-18
Java(TM) SE Runtime Environment (build 18.0.2.1+1-1)
Java HotSpot(TM) 64-Bit Server VM (build 18.0.2.1+1-1, mixed mode, sharing)
Android Studio Chipmunk | 2021.2.1 Patch 1
Build #A1-212.5712.43.2112.8609683, built on May 19,2022
Android SDK Build-Tools 33
Android Emulator 33.3.10
Android SDK Platform-Tools 33.0.3
Android SDK Command-line Tools (latest) installed
Flutter 3.3.0 • channel stable • https://github.com/flutter/flutter.git
Framework • revision ffccd96b62 (33 hours ago) • 2022-08-29 17:28:57 -0700
Engine • revision 5e9e0e0aa8
Tools • Dart 2.18.0 • DevTools 2.15.0

Answer 1

have you tried to do a flutter clean and then flutter pub get.
It seems trivial but it actually fixed a lot of my bugs.
A flutter doctor could give useful informations too