先说原因，我们引用的包版本不同产生了冲突，所以编译不通过。解决的办法是在引用的时候排除一个版本，只留一个版本。
解决过程：
先找出哪些库引用了相同的库，仅仅是版本不同。
gradle app:dependencies
app换成你工程中的模块名，它会生成一个依赖列表，我们要做的是分析一下这个列表，比如我的引用就是：
dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation 'androidx.appcompat:appcompat:1.1.0' implementation 'androidx.constraintlayout:constraintlayout:1.1.3' implementation 'com.google.android.material:material:1.0.0' implementation 'androidx.lifecycle:lifecycle-process:2.2.0-alpha04' implementation 'androidx.work:work-runtime:2.3.0-alpha01' }
在编译的时候就产生了'androidx.arch.core:core-runtime' has different version for the compile (2.0.0) and runtime (2.0.1)错误
我这个模块叫work，所以通过gradle work:dependencies得到一个列表：
releaseUnitTestRuntimeClasspath - Resolved configuration for runtime for variant: releaseUnitTest +--- androidx.appcompat:appcompat:1.1.0 | +--- androidx.annotation:annotation:1.1.0 | +--- androidx.core:core:1.1.0 | | +--- androidx.annotation:annotation:1.1.0 | | +--- androidx.lifecycle:lifecycle-runtime:2.0.0 -> 2.2.0-alpha04 | | | +--- androidx.lifecycle:lifecycle-common:2.2.0-alpha04 | | | | \--- androidx.annotation:annotation:1.1.0 | | | +--- androidx.arch.core:core-common:2.1.0-rc01 | | | | \--- androidx.annotation:annotation:1.1.0 | | | \--- androidx.annotation:annotation:1.1.0 | | +--- androidx.versionedparcelable:versionedparcelable:1.1.0 | | | +--- androidx.annotation:annotation:1.1.0 | | | \--- androidx.collection:collection:1.0.0 -> 1.1.0 | | | \--- androidx.annotation:annotation:1.1.0 | | \--- androidx.collection:collection:1.0.0 -> 1.1.0 (*) | +--- androidx.cursoradapter:cursoradapter:1.0.0 | | \--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | +--- androidx.fragment:fragment:1.1.0 | | +--- androidx.annotation:annotation:1.1.0 | | +--- androidx.core:core:1.1.0 (*) | | +--- androidx.collection:collection:1.1.0 (*) | | +--- androidx.viewpager:viewpager:1.0.0 | | | +--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | | +--- androidx.core:core:1.0.0 -> 1.1.0 (*) | | | \--- androidx.customview:customview:1.0.0 | | | +--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | | \--- androidx.core:core:1.0.0 -> 1.1.0 (*) | | +--- androidx.loader:loader:1.0.0 | | | +--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | | +--- androidx.core:core:1.0.0 -> 1.1.0 (*) | | | +--- androidx.lifecycle:lifecycle-livedata:2.0.0 | | | | +--- androidx.arch.core:core-runtime:2.0.0 -> 2.0.1 | | | | | +--- androidx.annotation:annotation:1.0.2 -> 1.1.0 | | | | | \--- androidx.arch.core:core-common:2.0.1 -> 2.1.0-rc01 (*) | | | | +--- androidx.lifecycle:lifecycle-livedata-core:2.0.0 | | | | | +--- androidx.lifecycle:lifecycle-common:2.0.0 -> 2.2.0-alpha04 (*) | | | | | +--- androidx.arch.core:core-common:2.0.0 -> 2.1.0-rc01 (*) | | | | | \--- androidx.arch.core:core-runtime:2.0.0 -> 2.0.1 (*) | | | | \--- androidx.arch.core:core-common:2.0.0 -> 2.1.0-rc01 (*) | | | \--- androidx.lifecycle:lifecycle-viewmodel:2.0.0 -> 2.1.0 | | | \--- androidx.annotation:annotation:1.1.0 | | +--- androidx.activity:activity:1.0.0 | | | +--- androidx.annotation:annotation:1.1.0 | | | +--- androidx.core:core:1.1.0 (*) | | | +--- androidx.lifecycle:lifecycle-runtime:2.1.0 -> 2.2.0-alpha04 (*) | | | +--- androidx.lifecycle:lifecycle-viewmodel:2.1.0 (*) | | | \--- androidx.savedstate:savedstate:1.0.0 | | | +--- androidx.annotation:annotation:1.1.0 | | | +--- androidx.arch.core:core-common:2.0.1 -> 2.1.0-rc01 (*) | | | \--- androidx.lifecycle:lifecycle-common:2.0.0 -> 2.2.0-alpha04 (*) | | \--- androidx.lifecycle:lifecycle-viewmodel:2.0.0 -> 2.1.0 (*) | +--- androidx.appcompat:appcompat-resources:1.1.0 | | +--- androidx.annotation:annotation:1.1.0 | | +--- androidx.core:core:1.0.1 -> 1.1.0 (*) | | +--- androidx.vectordrawable:vectordrawable:1.1.0 | | | +--- androidx.annotation:annotation:1.1.0 | | | +--- androidx.core:core:1.1.0 (*) | | | \--- androidx.collection:collection:1.1.0 (*) | | +--- androidx.vectordrawable:vectordrawable-animated:1.1.0 | | | +--- androidx.vectordrawable:vectordrawable:1.1.0 (*) | | | +--- androidx.interpolator:interpolator:1.0.0 | | | | \--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | | \--- androidx.collection:collection:1.1.0 (*) | | \--- androidx.collection:collection:1.0.0 -> 1.1.0 (*) | +--- androidx.drawerlayout:drawerlayout:1.0.0 | | +--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | +--- androidx.core:core:1.0.0 -> 1.1.0 (*) | | \--- androidx.customview:customview:1.0.0 (*) | \--- androidx.collection:collection:1.0.0 -> 1.1.0 (*) +--- androidx.constraintlayout:constraintlayout:1.1.3 | \--- androidx.constraintlayout:constraintlayout-solver:1.1.3 +--- com.google.android.material:material:1.0.0 | +--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | +--- androidx.core:core:1.0.0 -> 1.1.0 (*) | +--- androidx.legacy:legacy-support-core-ui:1.0.0 | | +--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | +--- androidx.core:core:1.0.0 -> 1.1.0 (*) | | +--- androidx.legacy:legacy-support-core-utils:1.0.0 | | | +--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | | +--- androidx.core:core:1.0.0 -> 1.1.0 (*) | | | +--- androidx.documentfile:documentfile:1.0.0 | | | | \--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | | +--- androidx.loader:loader:1.0.0 (*) | | | +--- androidx.localbroadcastmanager:localbroadcastmanager:1.0.0 | | | | \--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | | \--- androidx.print:print:1.0.0 | | | \--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | +--- androidx.customview:customview:1.0.0 (*) | | +--- androidx.viewpager:viewpager:1.0.0 (*) | | +--- androidx.coordinatorlayout:coordinatorlayout:1.0.0 | | | +--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | | +--- androidx.core:core:1.0.0 -> 1.1.0 (*) | | | \--- androidx.customview:customview:1.0.0 (*) | | +--- androidx.drawerlayout:drawerlayout:1.0.0 (*) | | +--- androidx.slidingpanelayout:slidingpanelayout:1.0.0 | | | +--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | | +--- androidx.core:core:1.0.0 -> 1.1.0 (*) | | | \--- androidx.customview:customview:1.0.0 (*) | | +--- androidx.interpolator:interpolator:1.0.0 (*) | | +--- androidx.swiperefreshlayout:swiperefreshlayout:1.0.0 | | | +--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | | +--- androidx.core:core:1.0.0 -> 1.1.0 (*) | | | \--- androidx.interpolator:interpolator:1.0.0 (*) | | +--- androidx.asynclayoutinflater:asynclayoutinflater:1.0.0 | | | +--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | | \--- androidx.core:core:1.0.0 -> 1.1.0 (*) | | \--- androidx.cursoradapter:cursoradapter:1.0.0 (*) | +--- androidx.legacy:legacy-support-core-utils:1.0.0 (*) | +--- androidx.fragment:fragment:1.0.0 -> 1.1.0 (*) | +--- androidx.transition:transition:1.0.0 | | +--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | | \--- androidx.core:core:1.0.0 -> 1.1.0 (*) | +--- androidx.appcompat:appcompat:1.0.0 -> 1.1.0 (*) | +--- androidx.cardview:cardview:1.0.0 | | \--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | \--- androidx.recyclerview:recyclerview:1.0.0 | +--- androidx.annotation:annotation:1.0.0 -> 1.1.0 | +--- androidx.core:core:1.0.0 -> 1.1.0 (*) | \--- androidx.legacy:legacy-support-core-ui:1.0.0 (*) +--- androidx.lifecycle:lifecycle-process:2.2.0-alpha04 | \--- androidx.lifecycle:lifecycle-runtime:2.2.0-alpha04 (*) \--- androidx.work:work-runtime:2.3.0-alpha01 +--- com.google.guava:listenablefuture:1.0 +--- androidx.lifecycle:lifecycle-livedata:2.0.0 (*) +--- androidx.room:room-runtime:2.1.0 | +--- androidx.room:room-common:2.1.0 | | \--- androidx.annotation:annotation:1.1.0 | +--- androidx.sqlite:sqlite-framework:2.0.1 | | +--- androidx.annotation:annotation:1.0.2 -> 1.1.0 | | \--- androidx.sqlite:sqlite:2.0.1 | | \--- androidx.annotation:annotation:1.0.2 -> 1.1.0 | +--- androidx.sqlite:sqlite:2.0.1 (*) | +--- androidx.arch.core:core-runtime:2.0.1 (*) | +--- androidx.core:core:1.0.0 -> 1.1.0 (*) | \--- androidx.collection:collection:1.0.0 -> 1.1.0 (*) +--- androidx.core:core:1.0.0 -> 1.1.0 (*) \--- androidx.lifecycle:lifecycle-service:2.0.0 \--- androidx.lifecycle:lifecycle-runtime:2.0.0 -> 2.2.0-alpha04 (*)
然后我们沿着树形结构可以找到，androidx.work:work-runtime:2.3.0-alpha01和 androidx.appcompat:appcompat:1.1.0中的core-runtime版本冲突了，解决的办法是去掉一个留一个，我是把work-runtime中的去掉了。如下：
dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation 'androidx.appcompat:appcompat:1.1.0' implementation 'androidx.constraintlayout:constraintlayout:1.1.3' implementation 'com.google.android.material:material:1.0.0' implementation 'androidx.lifecycle:lifecycle-process:2.2.0-alpha04' implementation ('androidx.work:work-runtime:2.3.0-alpha01'){ exclude group: 'androidx.arch.core' } }