IONIC3 - Solve cordova build android issue (unable to find attribute android:fontVariationSettings and android:ttcIndex)

1) Install cordova-android-support-gradle-release pluggin

cordova plugin add cordova-android-support-gradle-release --fetch

2) Refresh platform files

cordova platform rm android
cordova platform add android

3) Add these lines at the end of the file ./platforms/android/build.gradle

configurations.all {
    resolutionStrategy.force 'com.android.support:support-v4:27.1.0'
}