Error : Program type already present: android.support.design.widget.CoordinatorLayout$Behavior_error: program type already present: android.suppo-优快云博客

本文介绍了解决Android项目中出现的“program type already present”错误的方法。通过降级或升级支持库版本，如appcompat-v7和design依赖，可以有效避免此类冲突。具体操作为将appcompat-v7版本从27.1.0降至27.0.2，并添加design依赖。

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解决办法:
https://stackoverflow.com/questions/49112190/error-program-type-already-present-android-support-design-widget-coordinatorl
版本降级（或者升级）

原回答：

It worked when I downgrade the support appcompat gradle dependency,like follwing:

implementation'com.android.support:appcompat-v7:27.0.2'

previously it was

implementation'com.android.support:appcompat-v7:27.1.0'

OR
Also this can be fixed by just adding support design dependency to your app level build.gradle as following:

implementation'com.android.support:design:27.1.0'

原回答译文：

当我降级支持appcompatgradle依赖时，它起作用，如下所示：

implementation 'com.android.support:appcompat-v7:27.0.2'

以前是

implementation 'com.android.support:appcompat-v7:27.1.0'

要么
此外，只需将支持设计依赖项添加到您的应用程序级别即可解决此问题build.gradle：

implementation 'com.android.support:design:27.1.0'

我的build.gradle dependencies 更改后展示

implementation 'com.android.support:design:27.0.2'
implementation 'com.android.support:appcompat-v7:27.0.2'
implementation 'com.android.support:recyclerview-v7:27.0.2'