Android Studio报错：

The number of method references in a .dex file cannot exceed 64K.
Caused by: com.android.tools.r8.utils.AbortException: Error: Cannot fit requested classes in a single dex file (# methods: 68815 > 65536)

解决方案

1. build.gradle文件android的defaultConfig里面增加multiDexEnabled true
   
2. build.gradle文件dependencies里面增加implementation 'com.android.support:multidex:1.0.3'
   
3. Application类中增加

• kotlin写法

    override fun attachBaseContext(base: Context) {super.attachBaseContext(base)MultiDex.install(this)}

• java写法

@Overrideprotected void attachBaseContext(Context base) {super.attachBaseContext(base);MultiDex.install(this);}