resource android:attr/fontVariationSettings not found. and android:attr/ttcIndex not found. error out of no where

Question

android:attr/fontVariationSettings not found. and android:attr/ttcIndex not found. error out of no where

i have tried changing compileSdkVersion to 28 (have 27 atm) but that just gave me more errors

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "package name"
        minSdkVersion 16
        targetSdkVersion 27
        versionCode 2
        versionName "2.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support:customtabs:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.google.android.gms:play-services-ads:17.1.2'
    implementation 'com.google.android.ads.consent:consent-library:1.0.6'
    implementation 'com.google.android.gms:play-services-plus:16.0.0'
    implementation 'com.google.firebase:firebase-core:17.0.1'

Android resource linking failed Output: E:\\Android_Studio\\AlarmTestGithub\\KeepStreak\\app\\build\\intermediates\\incremental\\mergeDebugResources\\merged.dir\\values\\values.xml:373: error: resource android:attr/fontVariationSettings not found. E:\\Android_Studio\\AlarmTestGithub\\KeepStreak\\app\\build\\intermediates\\incremental\\mergeDebugResources\\merged.dir\\values\\values.xml:373: error: resource android:attr/ttcIndex not found. error: failed linking references.

Command: C:\\Users\\Anton.gradle\\caches\\transforms-1\\files-1.1\\aapt2-3.2.0-alpha13-4662957-windows.jar\\3a26e83e63ade5648a5de3c39b9c37ce\\aapt2-3.2.0-alpha13-4662957-windows\\aapt2.exe link -I\\ C:\\Users\\Anton\\AppData\\Local\\Android\\Sdk\\platforms\\android-27\\android.jar\\ --manifest\\ E:\\Android_Studio\\AlarmTestGithub\\KeepStreak\\app\\build\\intermediates\\merged_manifests\\debug\\processDebugManifest\\merged\\AndroidManifest.xml\\ -o\\ E:\\Android_Studio\\AlarmTestGithub\\KeepStreak\\app\\build\\intermediates\\processed_res\\debug\\processDebugResources\\out\\resources-debug.ap_\\ -R\\ @E:\\Android_Studio\\AlarmTestGithub\\KeepStreak\\app\\build\\intermediates\\incremental\\processDebugResources\\resources-list-for-resources-debug.ap_.txt\\ --auto-add-overlay\\ --java\\ E:\\Android_Studio\\AlarmTestGithub\\KeepStreak\\app\\build\\generated\\not_namespaced_r_class_sources\\debug\\processDebugResources\\r\\ --proguard-main-dex\\ E:\\Android_Studio\\AlarmTestGithub\\KeepStreak\\app\\build\\intermediates\\legacy_multidex_aapt_derived_proguard_rules\\de bug\\processDebugResources\\manifest_keep.txt\\ --custom-package\\ "package name"\\ -0\\ apk\\ --output-text-symbols\\ E:\\Android_Studio\\AlarmTestGithub\\KeepStreak\\app\\build\\intermediates\\symbols\\debug\\R.txt\\ --no-version-vectors Daemon: AAPT2 aapt2-3.2.0-alpha13-4662957-windows Daemon #0

Answer 1

将您的compileSdkVersion增加到29。您正在使用需要最新compileSdkVersion 。