我有一个工作得很好的Libgdx项目：Desktop和Android版本。我试图在gradle.build中添加一个外部库（kryonet），但它似乎没有用。在搞砸了一点之后，Eclipse在所有文件夹中显示错误，但代码中没有错误。桌面版仍然运行，但Android版本没有。在Eclipse的Problems视图中，存在以下错误：
Invalid Gradle project configuration file: .settings/org.eclipse.buildship.core.prefs org.eclipse.buildship.core.prefs /GameWorkspace/.settings Unknown Gradle Project Configuration Marker
Invalid Gradle project configuration file: .settings/org.eclipse.buildship.core.prefs org.eclipse.buildship.core.prefs /Historia-android/.settings Unknown Gradle Project Configuration Marker
Invalid Gradle project configuration file: .settings/org.eclipse.buildship.core.prefs org.eclipse.buildship.core.prefs /Historia-core/.settings Unknown Gradle Project Configuration Marker
Invalid Gradle project configuration file: .settings/org.eclipse.buildship.core.prefs org.eclipse.buildship.core.prefs /Historia-desktop/.settings Unknown Gradle Project Configuration Marker
这是org.eclipse.buildship.core.prefs：
GRADLE_FILTERS=1.0-projectRelativePath-matches-false-false-android,1.0-projectRelativePath-matches-false-false-core,1.0-projectRelativePath-matches-false-false-desktop,1.0-projectRelativePath-matches-false-false-build,1.0-projectRelativePath-matches-false-false-.gradle
eclipse.preferences.version=1
我尝试清理项目并再次构建它并重新启动eclipse但它不起作用。 知道什么是错的吗？ 谢谢！