AS报错:Cannot fit requested classes in a single dex file

报错

Cannot fit requested classes in a single dex file (# methods: 71309 > 65536)

解决方案

1. 在defaultConfig中添加multiDexEnabled true

android {
    defaultConfig {
        ......
        multiDexEnabled true
    }
 }

2. 添加依赖

implementation 'com.android.support:multidex:1.0.3'