How to reduce the size of an expo/react-native app on Android

Question

I am developing a small dictionary app by using react native with expo.

As I am compiling to Apk file. The size goes up to 30mb and after having installed on a devi

Answer 1

the expo is for development the app you should migrate to react-native for production

• make a new react app "react-native init"

• Copy the source files over from Expo project

• Install all dependencies of the Expo project except Expo specific libraries.

• Make necessary adjustments to app.json file

• Download the signing key of your Android app from Expo using exp

• fetch:android:keystore and set it up

This reduces your app dramatically you can also enable proguard and specific build for cpu architecture

buildTypes {
    release {
        debuggable false
        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    }
 }

for more info visit https://medium.com/@aswinmohanme/how-i-reduced-the-size-of-my-react-native-app-by-86-27be72bba640

using expo component

after you done and want publish with less size or just wan't to use a native library expo give you an option called ExpoKit this also can be used with already build with native code react projects

1-run command expo eject to add ExpoKit (choose the "ExpoKit" option)
(no need to do this if you have copied files manually or using native project)
2 -start expo packager with expo start.Leave this running and continue with the following steps.
3- link library for android and ios, this command mostly do this react-native link, sometime this will not work and you should do it manually for this means visit expokit
PS: I didn't test this so if this not work inform me