Android Gradle Sync failed could not find support-core-ui.aar

Question

I've been working on this Android Project for about a year now, suddenly when I opened it yesterday Android Studio 3.1.2 failed to sync gradle and the project doesn't build anymore giving me this error:

Could not find support-core-ui.jar (com.android.support:support-core-ui:27.1.1).     Searched in the following locations:         https://jcenter.bintray.com/com/android/support/support-core-ui/27.1.1/support-core-ui-27.1.1.jar      Please install the Android Support Repository from the Android SDK Manager.     Open Android SDK Manager 

I'm pretty sure that the Android Support Repository is installed correctly because it's working successfully in other projects and all my other projects are working fine with no problems.

I have this gradle file in the app module:

buildscript {     repositories {         maven { url 'https://maven.fabric.io/public' }     }     dependencies {         classpath 'io.fabric.tools:gradle:1.21.5'     } } plugins {     id 'com.onesignal.androidsdk.onesignal-gradle-plugin' version '0.8.1' } apply plugin: 'com.onesignal.androidsdk.onesignal-gradle-plugin' apply plugin: 'com.android.application' apply plugin: 'io.fabric' apply plugin: 'com.neenbedankt.android-apt' apply plugin: 'realm-android'  android {     compileSdkVersion 27     buildToolsVersion "27.0.3"      defaultConfig {         minSdkVersion 16         targetSdkVersion 23         versionCode 32         versionName "3.1"          multiDexEnabled true          manifestPlaceholders = [onesignal_app_id               : "",                                 // Project number pulled from dashboard, local value is ignored.                                 onesignal_google_project_number: "REMOTE"]      }      configurations {         all*.exclude group: 'com.android.support', module: 'support-v4'     }      configurations.all {         resolutionStrategy.eachDependency { DependencyResolveDetails details ->             def requested = details.requested             if (requested.group == 'com.android.support') {                 if (!requested.name.startsWith("multidex")) {                     details.useVersion '27.1.1'                 }             }             if (requested.group == 'com.google.android.gms') {                 details.useVersion '15.0.1'             }             if (requested.group == 'com.google.firebase') {                 details.useVersion '15.0.1'             }         }     }      buildTypes {         release {             minifyEnabled false //            proguardFiles 'proguard.cfg'         }     }      useLibrary 'org.apache.http.legacy'     packagingOptions {         exclude 'META-INF/LICENSE'         exclude 'META-INF/LICENSE.txt'         exclude 'META-INF/NOTICE.txt'         exclude 'META-INF/DEPENDENCIES'     } }  repositories {     maven {         url "https://jitpack.io"     }     maven {         url  "https://dl.bintray.com/lukaville/maven"     }     maven { url 'https://maven.fabric.io/public' }     maven { url 'https://maven.google.com' }     mavenCentral() }  dependencies {     compile project(':FORTSDKv1.4.1')     compile files('libs/nineoldandroids-2.4.0.jar')     compile files('libs/gcm.jar')     compile files('libs/httpclient-4.3.4.jar')     compile files('libs/httpmime-4.2.5.jar')     compile files('libs/HockeySDK-3.0.2.jar')     compile files('libs/samsungpay-1.8.00.jar')     compile project(':library-2.4.1')     // Required for geotagging     compile('com.crashlytics.sdk.android:crashlytics:2.6.8@aar') {         transitive = true     }     compile('com.code-troopers.betterpickers:library:3.1.0') {         exclude group: 'com.nineoldandroids', module: 'library'     }     compile 'com.android.support:support-v4:27.0.0'     // https://mvnrepository.com/artifact/com.android.support/support-core-ui     compile group: 'com.android.support', name: 'support-core-ui', version: '27.1.1'     compile 'com.android.support:appcompat-v7:27.0.0'     compile 'com.android.support:cardview-v7:27.0.0'     compile 'com.android.support:customtabs:27.0.0'     compile 'com.android.support:multidex:1.0.3'     compile 'com.googlecode.libphonenumber:libphonenumber:8.8.9'     compile 'org.parceler:parceler-api:1.1.5'     compile('com.google.android.gms:play-services-analytics:11.8.0') {         exclude group: 'com.android.support', module: 'support-v4'     }     compile 'com.google.android.gms:play-services-maps:15.0.1'     compile 'com.google.android.gms:play-services-auth:15.0.1'     compile 'com.google.android.gms:play-services-gcm:15.0.1'     compile 'com.google.android.gms:play-services-location:15.0.1'     //    compile 'com.google.android.gms:play-services-analytics:11.8.0'     compile 'com.github.hackware1993:MagicIndicator:1.5.0'     compile 'com.roomorama:caldroid:2.3.1'     compile 'com.google.code.gson:gson:2.8.1'     compile 'com.leocardz:aelv:1.1@aar'     compile 'com.flaviofaria:kenburnsview:1.0.7'     compile('com.jakewharton:butterknife:8.4.0') {         exclude module: 'support-compat'         exclude group: 'com.google.android', module: 'support-v4'     }     compile 'com.pixplicity.easyprefs:library:1.8.1@aar'     compile 'de.hdodenhof:circleimageview:2.2.0'     compile 'com.github.jrvansuita:IconHandler:+'     compile 'com.github.mancj:SlideUp-Android:2.2.5'     compile 'com.afollestad:sectioned-recyclerview:0.5.0'     compile 'com.github.bumptech.glide:glide:3.7.0'     compile 'com.facebook.stetho:stetho:1.4.1'     compile 'com.facebook.stetho:stetho-okhttp3:1.4.1'     compile 'com.uphyca:stetho_realm:2.0.0'     compile 'org.greenrobot:eventbus:3.1.1'     compile 'com.birbit:android-priority-jobqueue:2.0.1'     compile 'com.squareup.retrofit2:retrofit:2.3.0'     compile 'com.squareup.retrofit2:converter-gson:2.1.0'     compile 'com.squareup.retrofit2:converter-scalars:2.1.0'     compile 'com.valdesekamdem.library:md-toast:0.8.0'     compile 'com.facebook.android:account-kit-sdk:4.30.0'     compile 'com.facebook.android:facebook-android-sdk:4.17.0'     compile 'com.wang.avi:library:2.1.3@aar'     compile 'com.afollestad.material-dialogs:core:0.9.6.0'     //    compile 'com.onesignal:OneSignal:3.6.5'     compile 'com.onesignal:OneSignal:[3.9.1, 3.99.99]'     compile 'com.kbeanie:image-chooser-library:1.6.0@aar'     compile 'com.squareup.picasso:picasso:2.5.2'     compile 'com.scalified:fab:1.1.3'     compile 'com.github.traex.expandablelayout:library:1.2.2'     compile 'com.github.markomilos:paginate:0.5.1'     compile 'com.wdullaer:materialdatetimepicker:3.3.0'     compile 'com.github.tamir7.contacts:contacts:1.1.7'     compile 'com.android.support.constraint:constraint-layout:1.0.2'     compile 'net.yslibrary.keyboardvisibilityevent:keyboardvisibilityevent:2.1.0'     compile 'com.github.livechat:chat-window-android:v2.0.0'     compile 'com.uber.sdk:rides-android:0.6.1'     compile 'link.fls:swipestack:0.3.0'     compile 'com.github.PhilJay:MPAndroidChart:v3.0.2'     compile 'com.victor:lib:1.0.1'     compile 'com.shamanland:fonticon:0.1.8'     compile 'jp.wasabeef:recyclerview-animators:2.2.7'     compile 'com.squareup.okhttp3:logging-interceptor:3.8.0'     compile 'com.github.vihtarb:tooltip:0.1.9'     compile 'com.daasuu:CountAnimationTextView:0.1.1'     compile 'com.theartofdev.edmodo:android-image-cropper:2.5.1'     compile('com.android.billingclient:billing:1.0') {         exclude module: 'support-compat'         exclude group: 'com.google.android', module: 'support-v4'     }     compile('de.keyboardsurfer.android.widget:crouton:1.8.5@aar') {         // exclusion is not necessary, but generally a good idea.         exclude group: 'com.google.android', module: 'support-v4'     }     compile 'com.nbsp:library:1.8'     apt 'com.jakewharton:butterknife-compiler:8.8.1'     apt 'org.parceler:parceler:1.1.5'     compile 'com.google.guava:guava:19.0'     compile 'org.bouncycastle:bcprov-jdk16:1.46' }   apply plugin: 'com.google.gms.google-services' 

Any suggestions or solutions are very appreciated. Thanks.

Answer 1

I just resolved this problem on my own build server. I updated my repositories block in my build.gradle to have google() as the first entry like below:

allprojects {   repositories {     google()     jcenter()   } } 

Edit: removed a repo that was not needed.