【Android開發】&Program type already present: kotlin.ExtensionFunctionType

引用其他包，該包也包含有kotlin的引用，導致出現上面的問題。將重複的包引用去掉。下面爲註釋部分代碼。

apply plugin: 'com.android.library'
//apply plugin: 'kotlin-android-extensions'
//apply plugin: 'kotlin-android'


android {
  compileSdkVersion 28


  defaultConfig {
    multiDexEnabled true
    minSdkVersion 14
    targetSdkVersion 28

    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
  }

  testOptions {
    unitTests {
      includeAndroidResources = true
    }
  }
}

dependencies {
  androidTestImplementation 'androidx.test:core:1.1.0'
  androidTestImplementation 'androidx.test:runner:1.1.1'
  implementation 'androidx.annotation:annotation:1.0.2'
    //implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
}
repositories {
    mavenCentral()
}