构建错误-IonicCordova因android而失败

运行命令"ionic cordova build android --stacktrace"时出现以下错误:

:generateDebugResources
:mergeDebugResources

:processDebugManifest

:processDebugResources
ERROR: In  FontFamilyFont, unable to find attribute android:fontVariationSettings
 FAILED
ERROR: In  FontFamilyFont, unable to find attribute android:ttcIndex

I am using following tools on Window's:
 Editor : VScode

Ionic: C:\Users\xyz>ionic -version
3.19.1
Npm as packagemanager

项目属性:

target=android-26
cordova.system.library.1=com.google.android.gms:play-services-analytics:+
cordova.system.library.2=com.facebook.android:facebook-android-sdk:4.+
cordova.gradle.include.1=cordova-plugin-appsflyer-sdk/customerapp-cordovaAF.gradle
cordova.gradle.include.2=twitter-connect-plugin/customerapp-twitter.gradle
cordova.system.library.3=com.android.support:support-v4:26.+
cordova.system.library.4=com.android.support:appcompat-v7:26.+
cordova.system.library.5=com.android.support:support-v4:24.1.1+
cordova.system.library.6=com.android.support:support-v4:+
android.library.reference.1=CordovaLib

David López.. 11

我不得不做以上两个答案的内容:

在platforms/android/phonegap-plugin-barcodescanner中:

搜索compile 'com.android.support:support-v4:+并替换compile 'com.android.support:support-v4:27+'.

在平台/ android:

搜索cordova.system.library.2=com.android.support:support-v4:+并替换cordova.system.library.2=com.android.support:support-v4:27.1.0.

希望能帮助到你.

我不得不做以上两个答案的内容:

在platforms/android/phonegap-plugin-barcodescanner中:

搜索compile 'com.android.support:support-v4:+并替换compile 'com.android.support:support-v4:27+'.

在平台/ android:

搜索cordova.system.library.2=com.android.support:support-v4:+并替换cordova.system.library.2=com.android.support:support-v4:27.1.0.

希望能帮助到你.