Error: Cannot fit requested classes in a single dex file (# methods: 72725 > 65536)
1.在app的gradle下defaultConfig配置添加：
multiDexEnabled true
2.在app的gradle下的dependencies配置添加：
implementation 'com.android.support:multidex:1.0.3'
參考：https://developer.android.com/studio/build/multidex