构建错误-Ionic Cordova因android而失败 [英] Build Error -Ionic Cordova fails for android

问题描述

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

I get following error while running the command "ionic cordova build android --stacktrace" :

:generateDebugResources
:mergeDebugResources

:processDebugManifest

:processDebugResources
ERROR: In <declare-styleable> FontFamilyFont, unable to find attribute android:fontVariationSettings
 FAILED
ERROR: In <declare-styleable> 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

推荐答案

我必须做以上两个答案的内容：

I had to do the stuff of both the answers above:

在 platforms / android / phonegap- plugin-barcodescanner ：

搜索编译'com.android.support:support-v4:+并替换编译'com.android.support:support-v4:27 +'。

在 platforms / 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 。

希望有所帮助。

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