android支持包com.android.support:support-v4 依赖树，便于分析类冲突问题

执行如下依赖分析指令可以打印依赖树
sh gradlew -q app:dependencies
 com.android.support:support-v4:28.0.0 是一个非常庞大的支持库，依赖的东一比较多下面看看详情：

standard_testReleaseUnitTestRuntimeClasspath - Resolved configuration for runtime for variant: standard_testReleaseUnitTest
+--- com.android.support:support-v4:28.0.0
|    +--- com.android.support:support-compat:28.0.0
|    |    +--- com.android.support:support-annotations:28.0.0
|    |    +--- com.android.support:collections:28.0.0
|    |    |    \--- com.android.support:support-annotations:28.0.0
|    |    +--- android.arch.lifecycle:runtime:1.1.1
|    |    |    +--- android.arch.lifecycle:common:1.1.1
|    |    |    |    \--- com.android.support:support-annotations:26.1.0 -> 28.0.0
|    |    |    +--- android.arch.core:common:1.1.1
|    |    |    |    \--- com.android.support:support-annotations:26.1.0 -> 28.0.0
|    |    |    \--- com.android.support:support-annotations:26.1.0 -> 28.0.0
|    |    \--- com.android.support:versionedparcelable:28.0.0
|    |         +--- com.android.support:support-annotations:28.0.0
|    |         \--- com.android.support:collections:28.0.0 (*)
|    +--- com.android.support:support-media-compat:28.0.0
|    |    +--- com.android.support:support-annotations:28.0.0
|    |    +--- com.android.support:support-compat:28.0.0 (*)
|    |    \--- com.android.support:versionedparcelable:28.0.0 (*)
|    +--- com.android.support:support-core-utils:28.0.0
|    |    +--- com.android.support:support-annotations:28.0.0
|    |    +--- com.android.support:support-compat:28.0.0 (*)
|    |    +--- com.android.support:documentfile:28.0.0
|    |    |    \--- com.android.support:support-annotations:28.0.0
|    |    +--- com.android.support:loader:28.0.0
|    |    |    +--- com.android.support:support-annotations:28.0.0
|    |    |    +--- com.android.support:support-compat:28.0.0 (*)
|    |    |    +--- android.arch.lifecycle:livedata:1.1.1
|    |    |    |    +--- android.arch.core:runtime:1.1.1
|    |    |    |    |    +--- com.android.support:support-annotations:26.1.0 -> 28.0.0
|    |    |    |    |    \--- android.arch.core:common:1.1.1 (*)
|    |    |    |    +--- android.arch.lifecycle:livedata-core:1.1.1
|    |    |    |    |    +--- android.arch.lifecycle:common:1.1.1 (*)
|    |    |    |    |    +--- android.arch.core:common:1.1.1 (*)
|    |    |    |    |    \--- android.arch.core:runtime:1.1.1 (*)
|    |    |    |    \--- android.arch.core:common:1.1.1 (*)
|    |    |    \--- android.arch.lifecycle:viewmodel:1.1.1
|    |    |         \--- com.android.support:support-annotations:26.1.0 -> 28.0.0
|    |    +--- com.android.support:localbroadcastmanager:28.0.0
|    |    |    \--- com.android.support:support-annotations:28.0.0
|    |    \--- com.android.support:print:28.0.0
|    |         \--- com.android.support:support-annotations:28.0.0
|    +--- com.android.support:support-core-ui:28.0.0
|    |    +--- com.android.support:support-annotations:28.0.0
|    |    +--- com.android.support:support-compat:28.0.0 (*)
|    |    +--- com.android.support:support-core-utils:28.0.0 (*)
|    |    +--- com.android.support:customview:28.0.0
|    |    |    +--- com.android.support:support-annotations:28.0.0
|    |    |    \--- com.android.support:support-compat:28.0.0 (*)
|    |    +--- com.android.support:viewpager:28.0.0
|    |    |    +--- com.android.support:support-annotations:28.0.0
|    |    |    +--- com.android.support:support-compat:28.0.0 (*)
|    |    |    \--- com.android.support:customview:28.0.0 (*)
|    |    +--- com.android.support:coordinatorlayout:28.0.0
|    |    |    +--- com.android.support:support-annotations:28.0.0
|    |    |    +--- com.android.support:support-compat:28.0.0 (*)
|    |    |    \--- com.android.support:customview:28.0.0 (*)
|    |    +--- com.android.support:drawerlayout:28.0.0
|    |    |    +--- com.android.support:support-annotations:28.0.0
|    |    |    +--- com.android.support:support-compat:28.0.0 (*)
|    |    |    \--- com.android.support:customview:28.0.0 (*)
|    |    +--- com.android.support:slidingpanelayout:28.0.0
|    |    |    +--- com.android.support:support-annotations:28.0.0
|    |    |    +--- com.android.support:support-compat:28.0.0 (*)
|    |    |    \--- com.android.support:customview:28.0.0 (*)
|    |    +--- com.android.support:interpolator:28.0.0
|    |    |    \--- com.android.support:support-annotations:28.0.0
|    |    +--- com.android.support:swiperefreshlayout:28.0.0
|    |    |    +--- com.android.support:support-annotations:28.0.0
|    |    |    +--- com.android.support:support-compat:28.0.0 (*)
|    |    |    \--- com.android.support:interpolator:28.0.0 (*)
|    |    +--- com.android.support:asynclayoutinflater:28.0.0
|    |    |    +--- com.android.support:support-annotations:28.0.0
|    |    |    \--- com.android.support:support-compat:28.0.0 (*)
|    |    \--- com.android.support:cursoradapter:28.0.0
|    |         \--- com.android.support:support-annotations:28.0.0
|    \--- com.android.support:support-fragment:28.0.0
|         +--- com.android.support:support-compat:28.0.0 (*)
|         +--- com.android.support:support-core-ui:28.0.0 (*)
|         +--- com.android.support:support-core-utils:28.0.0 (*)
|         +--- com.android.support:support-annotations:28.0.0
|         +--- com.android.support:loader:28.0.0 (*)
|         \--- android.arch.lifecycle:viewmodel:1.1.1 (*)
\--- :app-standard-debug