【Android小技巧】强制使某个库统一版本

例如解决V7包，引入冲突，强制统一引入的v7版本：
ext {
supportVersion = '27.1.1'
}
subprojects {
project.configurations.all {
resolutionStrategy.eachDependency { details ->
if (details.requested.group == 'com.android.support'
&& !details.requested.name.contains('multidex')) {
details.useVersion "$supportVersion"
}
}
}