AndroidStudio在编译时报错：
Could not find manifest-merger.jar (com.android.tools.build:manifest-merger:26.1.2).
Searched in the following locations:
https://jcenter.bintray.com/com/android/tools/build/manifest-merger/26.1.2/manifest-merger-26.1.2.jar将google和jcenter换下位置，让它去google中下载manifest-merger.jar包，就可以编译通过了。
gradle 在jcenter中找不到manifest-merger.jar包就不会再去google中寻找了
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.1'
}
}
allprojects {
repositories {
google()
jcenter()
flatDir {
dirs 'libs'
}
}
}