title: com.android.builder.internal.aapt.v2.Aapt2Exception: Android resource linking failed on android 3.2.1 SDK 28.0.3
body: <p>REVISED: got a new error after upgrading to AS(3.2.1) and Gradle(4.6). </p>
  
  <p>Here is build.gradle code. Gradle property has "
  android.enableAapt2 = true" and wrapper property has "distributionUrl=https://services.gradle.org/distributions/gradle-4.6-all.zip"</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 28
      buildToolsVersion '28.0.3'
      packagingOptions {
          exclude 'META-INF/DEPENDENCIES.txt'
          exclude 'META-INF/LICENSE.txt'
          exclude 'META-INF/NOTICE.txt'
          exclude 'META-INF/NOTICE'
          exclude 'META-INF/LICENSE'
          exclude 'META-INF/DEPENDENCIES'
          exclude 'META-INF/CHANGES'
          exclude 'META-INF/notice.txt'
          exclude 'META-INF/license.txt'
          exclude 'META-INF/dependencies.txt'
          exclude 'META-INF/LGPL2.1'
      }
      defaultConfig {
          applicationId "com.abc.app"
          minSdkVersion 19
          targetSdkVersion 28
          versionCode 1
          versionName "1.0.0"
          multiDexEnabled true
          testInstrumentationRunner "com.android.test.runner.MultiDexTestRunner"
          vectorDrawables.useSupportLibrary = true
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
      dexOptions {
          javaMaxHeapSize "2048M"
      }
      configurations {
          all*.exclude module: 'mediarouter-v7'
          all*.exclude module: 'support-compat'
          compile.exclude group: "org.apache.httpcomponents", module: "httpclient"
      }
  
      productFlavors {
      }
  }
  
  dependencies {
      implementation fileTree(include: ['*.jar'], dir: 'libs')
  
      implementation 'ch.acra:acra:4.9.1'
  
      implementation 'com.android.support:appcompat-v7:28.0.0'
      implementation 'com.android.support:design:28.0.0'
      implementation 'com.android.support:recyclerview-v7:28.0.0'
      implementation 'com.android.support:support-v4:28.0.0'
      implementation 'com.android.support:multidex:1.0.0'
      implementation 'com.android.support.constraint:constraint-layout:1.0.2'
      implementation 'com.android.support:percent:28.0.0'
  
      implementation 'com.google.android.gms:play-services:10.2.1'
      implementation 'com.google.android.gms:play-services-gcm:10.2.1'
      implementation 'com.google.android.gms:play-services-ads:10.2.1'
      implementation 'com.google.android.gms:play-services-auth:10.2.1'
  
      implementation 'com.google.maps.android:android-maps-utils:0.3.+'
      implementation 'de.hdodenhof:circleimageview:1.3.0'
      implementation 'com.jakewharton:butterknife:8.5.1'
      implementation 'com.uber.sdk:rides-android:0.5.3'
      implementation 'com.google.code.gson:gson:2.8.1'
      implementation 'org.jsoup:jsoup:1.11.3'
      testImplementation 'junit:junit:4.12'
      annotationProcessor 'com.jakewharton:butterknife-compiler:8.5.1'
  }
  
  
  apply plugin: 'com.google.gms.google-services'
  </code></pre>
  
  <p>The new error is </p>
  
  <pre><code>    Caused by: com.android.builder.internal.aapt.v2.Aapt2Exception: Android resource linking failed
  
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\888450102b7519d6fb3ec4fed42688ef\res\color\abc_btn_colored_text_material.xml:20: error: attribute alpha (aka com.abc.app:alpha) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\888450102b7519d6fb3ec4fed42688ef\res\color\abc_tint_btn_checkable.xml:19: error: attribute alpha (aka com.abc.app:alpha) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\888450102b7519d6fb3ec4fed42688ef\res\color\abc_tint_default.xml:19: error: attribute alpha (aka com.abc.app:alpha) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\888450102b7519d6fb3ec4fed42688ef\res\color\abc_tint_edittext.xml:19: error: attribute alpha (aka com.abc.app:alpha) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\888450102b7519d6fb3ec4fed42688ef\res\color\abc_tint_seek_thumb.xml:19: error: attribute alpha (aka com.abc.app:alpha) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\888450102b7519d6fb3ec4fed42688ef\res\color\abc_tint_spinner.xml:19: error: attribute alpha (aka com.abc.app:alpha) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\888450102b7519d6fb3ec4fed42688ef\res\color\abc_tint_switch_track.xml:19: error: attribute alpha (aka com.abc.app:alpha) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\888450102b7519d6fb3ec4fed42688ef\res\color\abc_tint_switch_track.xml:20: error: attribute alpha (aka com.abc.app:alpha) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\888450102b7519d6fb3ec4fed42688ef\res\color\abc_tint_switch_track.xml:21: error: attribute alpha (aka com.abc.app:alpha) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\design-28.0.0.aar\d2abd1d1eab13b237ffd0fc5d63d6820\res\color\design_tint_password_toggle.xml:19: error: attribute alpha (aka com.abc.app:alpha) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\support-media-compat-28.0.0.aar\f0a6c1a9d43f0b2d6cca2c26c28e9e86\res\layout\notification_template_big_media.xml:23: error: resource layout/notification_template_icon_group (aka com.abc.app:layout/notification_template_icon_group) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\support-media-compat-28.0.0.aar\f0a6c1a9d43f0b2d6cca2c26c28e9e86\res\layout\notification_template_big_media.xml:23: error: resource dimen/notification_large_icon_height (aka com.abc.app:dimen/notification_large_icon_height) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\support-media-compat-28.0.0.aar\f0a6c1a9d43f0b2d6cca2c26c28e9e86\res\layout\notification_template_big_media.xml:23: error: resource dimen/notification_large_icon_width (aka com.abc.app:dimen/notification_large_icon_width) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\support-media-compat-28.0.0.aar\f0a6c1a9d43f0b2d6cca2c26c28e9e86\res\layout\notification_template_big_media.xml:34: error: resource dimen/notification_large_icon_width (aka com.abc.app:dimen/notification_large_icon_width) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\support-media-compat-28.0.0.aar\f0a6c1a9d43f0b2d6cca2c26c28e9e86\res\layout\notification_template_big_media.xml:34: error: resource dimen/notification_large_icon_width (aka com.abc.app:dimen/notification_large_icon_width) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\support-media-compat-28.0.0.aar\f0a6c1a9d43f0b2d6cca2c26c28e9e86\res\layout\notification_template_big_media_custom.xml:23: error: resource layout/notification_template_icon_group (aka com.abc.app:layout/notification_template_icon_group) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\support-media-compat-28.0.0.aar\f0a6c1a9d43f0b2d6cca2c26c28e9e86\res\layout\notification_template_big_media_custom.xml:23: error: resource dimen/notification_large_icon_height (aka com.abc.app:dimen/notification_large_icon_height) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\support-media-compat-28.0.0.aar\f0a6c1a9d43f0b2d6cca2c26c28e9e86\res\layout\notification_template_big_media_custom.xml:23: error: resource dimen/notification_large_icon_width (aka com.abc.app:dimen/notification_large_icon_width) not found.
  C:\Users\&lt;User&gt;\.gradle\caches\transforms-1\files-1.1\support-media-compat-28.0.0.aar\f0a6c1a9d43f0b2d6cca2c26c28e9e86\res\layout\notification_template_big_media_custom.xml:34: error: resource dimen/notification_large_icon_height (aka com.abc.app:dimen/notification_large_icon_height) not found.
  </code></pre>
  
  <p>Tried many solutions including Invalidate Caches/Restart,  Close and Import Project, remove cache file, reinstall Android Studio, Clean &amp; Rebuild. None of them could make the project build successfully. </p>
  
  <p>Any other possible solutions?</p>