Manifest merger failed : Attribute application@appComponentFactory value=(androidx.core.app.CoreComp

问题

Manifest merger failed : Attribute application@appComponentFactory value=(androidx.core.app.CoreComponentFactory) from [androidx.core:core:1.0.1] AndroidManifest.xml:22:18-86
	is also present at [com.android.support:support-compat:28.0.0] AndroidManifest.xml:22:18-91 value=(android.support.v4.app.CoreComponentFactory).
	Suggestion: add 'tools:replace="android:appComponentFactory"' to  element at AndroidManifest.xml:16:5-32:19 to override.

原因

androidx 包冲突

解决方法

将带有androidx框架去掉即可

如何查看那个包有 androidx

Android 控制台，即terminal输入

gradlew :BL:dependencies

BL 是你的工程名

接着就出现一堆引用的框架，找到带有Androidx的包