Duplicate class from androidx.core:core:1.0.0 and com.android.support:support-compat:26.1.0
问题 This is my build.gradle : buildscript { repositories { maven { url 'https://maven.fabric.io/public' } } dependencies { classpath 'io.fabric.tools:gradle:1.+' } } apply plugin: 'com.android.application' apply plugin: 'io.fabric' apply plugin: 'kotlin-android' apply plugin: 'kotlin-android-extensions' repositories { maven { url 'https://maven.fabric.io/public' } google() } android { compileSdkVersion 26 buildToolsVersion '26.0.2' useLibrary 'org.apache.http.legacy' defaultConfig {