Error while building flutter app for android 13

Question

I have a flutter app created with flutter version 2.2 and I'm trying to build it for android 13 (targetSdkVersion 33) and I get one of two build errors:

First (when gradle version is below 7):

Could not open proj generic class cache for build file 'path/to/app/android/app/build.gradle' (/Users/user/.gradle/caches/6.5/scripts/5d4nrc28gkbak7ua19lfgqqhx/proj9e897448d2c85f064c8b54ac35428928). BUG! exception in phase 'semantic analysis' in source unit 'BuildScript' Unsupported class file major version 62

Second (when gradle version is above 7):

In plugin 'com.android.build.gradle.api.AndroidBasePlugin' type 'com.android.build.gradle.tasks.RenderscriptCompile' method 'useAndroidX()' should not be annotated with: @Input. Reason: Input/Output annotations are ignored if they are placed on something else than a getter.

the only thing I changed in my app to produce this error is in the build.gradle file in complileSdkVersion and targetSdkVersion and I changed it from 30 to 33:

android {
    compileSdkVersion 33

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

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        applicationId "com.name.app"
        minSdkVersion 23
        targetSdkVersion 33
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }
}

I've tried different versions of java and grade in all sorts of combinations and I keep getting one of those errors. It builds fine if the targetSdkVersion is 30. Could this be because of an old version of flutter?

It is recommended to upgrade your flutter and migrate your project to a newer project. Se this for more help in upgrading to newer version. https://stackoverflow.com/a/68334274/15119028 — Junaid Khalid, Apr 01 '23 at 06:38

score 1 · Accepted Answer · answered Mar 31 '23 at 22:43

I ran into similar issues after setting up a new Mac with JDK19.

I was able to solve this issue by upgrading the version of gradle in project_root/android/gradle/gradle-wrapper.properties to gradle-7.6-all.

Just exchange the line with distributionUrl like this:

distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-all.zip

After this change I was able to build the app with a newer JDK. Not sure about Flutter 2.2 since I am using 3.7 at the moment.

Error while building flutter app for android 13

1 Answers1