导入多个第三方依赖库的时候报错：
Error:Execution failed for task ':app:processDebugManifest'.
> Manifest merger failed : Attribute meta-data#android.support.VERSION@value value=(26.0.2) from [com.android.support:preference-v7:26.0.2] AndroidManifest.xml:25:13-35
is also present at [com.android.support:appcompat-v7:26.1.0] AndroidManifest.xml:28:13-35 value=(26.1.0).
Suggestion: add 'tools:replace="android:value"' to <meta-data> element at AndroidManifest.xml:23:9-25:38 to override.
在build.gradle(project:...)的buildscript {...}内添加添加代码。${versions.support}是一个全局变量，为"26.1.0"，请根据具体情况修改。
subprojects {
project.configurations.all {
resolutionStrategy.eachDependency { details ->
if (details.requested.group == 'com.android.support'
&& !details.requested.name.contains('multidex')) {
details.useVersion "${versions.support}"
}
}
}
}
