Error:org.gradle.api.internal.tasks.DefaultTaskInputs$TaskInputUnionFileCollection cannot be cast to org.gradle.api.internal.file.collections.DefaultConfigurableFileCollection
Possible causes for this unexpected error include:
- Gradle’s dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)
Re-download dependencies and sync project (requires network) - The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.
Stop Gradle build processes (requires restart) - Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.
是因gradle配置不对引起的原因
1.作为插件的gradle
2.作为gradle包的gradle：
Android Studio 里面配置的地方在这里：
需要注意可以有两种方法：
第一种是用wrapper的方法，也是android studio 推荐的方法，它会自动的去下载
第二种是手动下载后指定位置
