升级AS3.0 kotlin、databinding、glide

1、首先是Unresolved reference: databinding这个东西。
折腾过程不说了，贴出项目的的build.gradle

buildscript {
    ext.kotlin_version = '1.1.51'
    ext.android_plugin_version = '3.0.0'  
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        maven { url "https://jitpack.io" }
        maven { url 'https://dl.google.com/dl/android/maven2/' }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

然后在module的build.gradle里加上

kapt {
        generateStubs = true
    }

2、编译之后，发现GlideApp找不到了，怎么都生成不了。难道这也是kotlin的锅？
好吧，既然java的注解生成不了，那么用kotlin来

//annotationProcessor 'com.github.bumptech.glide:compiler:4.2.0'
kapt 'com.github.bumptech.glide:compiler:4.2.0'

然后将glidemodule注解的java类改成kotlin类
按下CTRL+F9 make project
全部解决。