Migrate to AndroidX 遇到的坑

Androidx 迁移方法：

首先把 gradle 版本改为3.2.0以上，以及 compileSdkVersion 为28以上

然后 Android Studio 菜单栏 Refactor -> Migrate to AndroidX

如果是新项目，使用AndroidX相关依赖，可以在gradle.properties文件里添加配置：

android.useAndroidX=true

android.enableJetifier=true

如果你只是想使用AndroidX，但是之前的不迁移，可以这样配置：

android.useAndroidX=true

android.enableJetifier=false

迁移完成后运行报错。。。

Conflict with dependency 'androidx.lifecycle:lifecycle-runtime' in project ':app'. Resolved versions for runtime classpath (2.0.0-rc01) and compile classpath (2.0.0) differ. This can lead to runtime crashes. To resolve this issue follow advice at https://developer.android.com/studio/build/gradle-tips#configure-project-wide-properties. Alternatively, you can try to fix the problem by adding this snippet to ...\...\..\..\build.gradle:

根据提示解决：

subprojects {

    project.buildDir = "${rootProject.buildDir}/${project.name}"

    project.configurations.all {

        resolutionStrategy.eachDependency { details ->

            if (details.requested.group == 'com.android.support'

                    && !details.requested.name.contains('multidex') ) {

                details.useVersion "27.1.1"

            }else if(details.requested.group == 'androidx.lifecycle')

            {

                details.useVersion "2.0.0-rc01"

            }else if(details.requested.group == 'androidx.versionedparcelable')

            {

                details.useVersion "1.0.0-rc01"

            }else if(details.requested.group == 'androidx.core')

            {

                details.useVersion "1.0.0-rc01"

            }

        }

    }

}

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Migrate to AndroidX 遇到的坑

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