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I have error like this after trying to build my apps in Emulator

/Users/joel/.gradle/caches/transforms-3/06231cc1265260b25a06bafce7a4176f/transformed/core-1.7.0-alpha02/res/values/values.xml:105:5-114:25: AAPT: error: resource android:attr/lStar not found.

I don't know what causes this error. After digging some answer which has similarly error (but in flutter) Problem. But still not solved my issue.

I have this dependency in my project

buildscript { repositories { google() maven { url 'https://plugins.gradle.org/m2/' } } dependencies { classpath 'com.google.gms:google-services:4.3.3' classpath 'com.google.firebase:firebase-crashlytics-gradle:2.3.0' } } apply plugin: 'com.android.application' apply plugin: 'com.google.gms.google-services' apply plugin: 'kotlin-android' apply plugin: 'kotlin-android-extensions' apply plugin: 'kotlin-kapt' apply plugin: 'com.google.firebase.crashlytics' repositories { maven { url 'https://maven.fabric.io/public' } maven { url 'https://maven.google.com' } maven { url "https://teads.jfrog.io/artifactory/SDKAndroid-maven-prod"} mavenCentral() } android { compileSdkVersion 29 buildToolsVersion '28.0.3' defaultConfig { applicationId "mobile.apps.my" minSdkVersion 17 targetSdkVersion 29 multiDexEnabled true versionCode 152 versionName "8.1.7" vectorDrawables.useSupportLibrary = true // This line hereP testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" } compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } dataBinding { enabled = true } buildTypes { debug { firebaseCrashlytics { mappingFileUploadEnabled false } } release { minifyEnabled true shrinkResources true proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } lintOptions { checkReleaseBuilds false abortOnError false } } dependencies { implementation fileTree(include: ['*.jar'], dir: 'libs') androidTestImplementation('androidx.test.espresso:espresso-core:3.2.0-beta01', { exclude group: 'com.android.support', module: 'support-annotations' }) //noinspection GradleCompatible implementation 'androidx.appcompat:appcompat:1.4.0-alpha03' implementation "androidx.appcompat:appcompat-resources:1.4.0-alpha03" implementation 'androidx.constraintlayout:constraintlayout:2.1.0' implementation 'androidx.preference:preference:1.1.1' implementation 'com.google.android.material:material:1.4.0' implementation 'androidx.recyclerview:recyclerview:1.2.1' implementation 'androidx.cardview:cardview:1.0.0' implementation 'androidx.percentlayout:percentlayout:1.0.0' implementation 'com.google.android.gms:play-services-analytics:17.0.0' implementation 'it.sephiroth.android.library.imagezoom:imagezoom:2.3.0' testImplementation 'org.json:json:20140107' implementation 'com.comscore:android-analytics:6.1.0' implementation 'com.android.support:customtabs:29.0.0' implementation 'androidx.viewpager2:viewpager2:1.0.0' implementation 'com.android.support:customtabs:29.0.0' // Kodein Dependency Injection implementation 'org.kodein.di:kodein-di-generic-jvm:6.2.1' implementation 'org.kodein.di:kodein-di-framework-android-x:6.2.1' // RETROFIT implementation 'com.squareup.retrofit2:retrofit:2.6.0' implementation 'com.squareup.retrofit2:converter-gson:2.4.0' implementation 'com.squareup.okhttp3:logging-interceptor:3.10.0' implementation 'com.google.code.gson:gson:2.8.5' implementation 'com.squareup.retrofit2:converter-scalars:2.1.0' // for test String // Room components implementation "androidx.room:room-runtime:2.2.5" kapt "androidx.room:room-compiler:2.2.5" implementation "androidx.room:room-ktx:2.2.5" androidTestImplementation "androidx.room:room-testing:2.2.5" // Lifecycle components implementation 'android.arch.lifecycle:extensions:1.1.1' implementation 'androidx.paging:paging-runtime:2.1.2' // UI implementation 'com.squareup.picasso:picasso:2.71828' implementation 'com.geniusforapp.fancydialog:FancyDialog:0.1.4' implementation 'com.github.bluzwong:swipeback:0.2.0@aar' implementation 'com.airbnb.android:lottie:3.6.0' implementation 'com.veinhorn.scrollgalleryview:library:1.2.6' implementation 'com.veinhorn.scrollgalleryview:picasso-loader:1.2.4' implementation 'com.github.rubensousa:bottomsheetbuilder:1.6.1' implementation "com.andkulikov:transitionseverywhere:1.8.1" // HTTP LOGGING implementation 'com.jakewharton.timber:timber:4.7.1' implementation 'org.jsoup:jsoup:1.13.1' implementation 'androidx.multidex:multidex:2.0.1' // ADS implementation 'com.android.support:support-annotations:28.0.0' // Required Dependency by Audience Network SDK implementation 'com.google.android.gms:play-services-ads:19.7.0' implementation 'com.google.android.gms:play-services-basement:17.6.0' implementation("tv.teads.sdk.android:sdk:4.7.2@aar") { transitive = true } implementation 'com.criteo.publisher:criteo-publisher-sdk:4.0.0' implementation 'com.google.android.gms:play-services-ads-identifier:17.0.0' implementation 'com.google.android.gms:play-services-base:17.6.0' implementation ('com.facebook.android:audience-network-sdk:5.5.0'){ exclude group: 'com.google.android.gms' } implementation 'com.google.firebase:firebase-crashlytics:17.4.0' implementation "androidx.core:core-ktx:1.6.0" // I have update this based on other solution implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.1" implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" // COROUTINES implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.4.1' implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.4.3' implementation 'com.jakewharton.retrofit:retrofit2-kotlin-coroutines-adapter:0.9.2' // Kotlin + coroutines implementation "androidx.work:work-runtime-ktx:2.5.0" implementation 'com.github.mumayank:AirLocation:1.3.1' androidTestImplementation 'androidx.test:rules:1.3.0-beta01' implementation 'com.android.installreferrer:installreferrer:2.2' //ANIMATION implementation 'com.daimajia.androidanimations:library:2.4@aar' implementation 'com.infideap.drawerbehavior:drawer-behavior:1.0.4' implementation 'com.romandanylyk:pageindicatorview:1.0.3' implementation 'org.ocpsoft.prettytime:prettytime:5.0.0.Final' //SOCIAL implementation 'com.google.android.gms:play-services-auth:19.0.0' }

I have tried to upgrade version of androidx.core:core-ktx:1.6.0 then sync or invalidate cache/restart. But none of them give me good result. I am sure yesterday my project was alright with same dependency. Someone please help me, if this question unclear let me add more information. Thanks

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  • 4
    It seems that at least one of your dependencies is already using lStar which is a system attribute that's new as of API level 31, but your build tools are only aware of things up to 29. Simply increasing your compileSdkVersion to 31 should allow that attribute to be resolved. Can you do that for this project? Commented Sep 3, 2021 at 10:40
  • 1
    This is due to the new 1.7.0-alpha02 version of the core androidx dependency which is causing the issue, simply switch to any stable version, this question has already been posted here so many times now Commented Sep 3, 2021 at 10:52
  • Here is all the list of releases of this dependency , so you should switch to the stable version to be safe Commented Sep 3, 2021 at 10:54
  • @gtxtreme This isn't a [react-native] question. It is not advisable to downgrade anything if they can simply update their build tools. Commented Sep 3, 2021 at 10:54
  • @MikeM. yes, I was just going to add that if you upgrade to 1.7.0-alpha02 then you have to use targetSdk 31 i.e. Android 12, and this issue is just Google preparing for stable Android 12 release and things like these, happen every year Commented Sep 3, 2021 at 10:57

5 Answers 5

Reset to default
14

QUICK FIX

In build.gradle(:app) file change version of appcompat to 1.3.0:

implementation 'androidx.appcompat:appcompat:1.3.0'
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2 Comments

I am already on appcompat 1.3.0. Still same error occured
@GeneCode try to change your target sdk version to 30 then clean project ->rebuild project
13

I managed to fix this by upgrading compileSdk to 31 and kotlin gradle plugin to 1.5.10

compileSdk = 31 classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.10'
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4 Comments

Changing compileSdkVersion to 31 in my build.gradle fixed it
It fixed it for me as well
Thank you! Week of struggling, this solved it (I had to do only the compilesdk = 31).
But what's the reason behind this error, how is the fix 32 sdk working?
3

In my case, I was using a library which recently upgraded to androidx.appcompat:appcompat:1.4.1 and since then I started getting this error.

So, till the time the author's of this library do not provide any fix I forced the appcompat version to 1.3.0

configurations.all { resolutionStrategy.force 'androidx.appcompat:appcompat:1.3.0' }
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1 Comment

This seriously saved me.
1

I changed version of appcompat from 1.4.0 to androidx.appcompat:appcompat:1.1.0 in the build.gradle, and it worked for me.

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Comments

0

1.7.0-alpha02 requires targetSdk 31.

So upgrade your sdk values.

You can use this:

buildscript { ext { buildToolsVersion = "31.0.0" minSdkVersion = 21 compileSdkVersion = 31 targetSdkVersion = 31 androidXCore = "1.6.0" } }
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