我尝试将改造库导入到我的 gradle 文件中，但不幸的是，我面临太多错误。
Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.squareup.retrofit2:retrofit:2.4.0.
Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve com.squareup.retrofit2:retrofit:2.4.0.
Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve com.squareup.retrofit2:retrofit:2.4.0.
Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve com.squareup.retrofit2:retrofit:2.4.0.
Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve com.squareup.retrofit2:retrofit:2.4.0.
编辑 这是我的应用程序 build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 27
defaultConfig {
applicationId "com.example.practice"
minSdkVersion 19
targetSdkVersion 27
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes { …