1、Warning:The android.dexOptions.incremental property is deprecated and it has no effect on the build process.
該警告的意思是指’android.dexOptions.incremental’這個property已經過時了，所以解決方法就很明顯了，直接去掉gradle下的

dexOptions {
        incremental true
    }

2、Error:Failed to resolve:
com.android.support:support-annotations:27.0.1
Install Repository and sync project
Open File
Show in Project Structure dialog
這個錯誤的話應該是Android Studio外掛版本問題，解決的辦法為，在gradle的buildtypes裡面加入repositories { maven { url “

buildTypes {
   repositories {
      maven {
            url "https://maven.google.com"
            }
        }
      release {
            minifyEnabled false
            proguardFiles   
            getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
 

        }
    }