Android Development Fix Cannot fit requested classes in a single dex file 04/13/202104/13/2021 adminLeave a reply It’s a very common error in Android studio, and to fix it, you need to enable multidex so just add these codes in your gradle file and sync implementation 'com.android.support:multidex:1.0.3' defaultConfig { multiDexEnabled true ShareClick to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)