多次定义了project.com.project.MainActivity类型

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问题描述

Kotlin和Java MainActivity类中的Android应用程序ID冲突

Android Application ID conflicts in Kotlin and Java MainActivity classes

错误:

Type project.com.project.MainActivity is defined multiple times 
./project/build/app/intermediates/javac/debug/classes/project/com/project/MainActivity.class,
./project/build/app/tmp/kotlin-classes/debug/project/com/project/MainActivity.class

Kotlin和Java MainActivity类均使用 flutter run 命令生成，并且都包含 package project.com.project

Both Kotlin and Java MainActivity classes are generated with the flutter run command and both include package project.com.project

MainActivity.class

package project.com.project

public class MainActivity {
   public MainActivity() {
   }
}

MainActivity.kt

package project.com.project

import io.flutter.embedding.android.FlutterActivity

class MainActivity: FlutterActivity() {

}

环境:

Android Studio  4.1.2
Gradle Plugin       4.1.2 
Gradle Version  6.5 
Flutter Version     1.22

在Android Studio中尝试过:

Tried in Android Studio :

Build -> Clean Project, 
Build -> Rebuild Project, 
File -> Invalidate Cache Restart

在命令行中尝试过

flutter clean 
flutter run
rm -Rf ~/.gradle/caches

错误仍然存在.

推荐答案

我遇到了相同的错误，并且我的应用程序build.gradle具有以下依赖关系.

I got the same error and my app build.gradle had the following dependencies.

implementation 'com.google.android.material:material:1.2.1'
implementation "androidx.compose.ui:ui:$compose_version"

删除ui依赖关系后，它可以正常工作.原因是材料取决于ui.

After I remove the ui dependency, it works fine. The reason is that material depends on ui.

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