Cannot fit requested classes in a single dex file (# methods: 104480 > 65536) code example

Example 1: cannot fit requested classes in a single dex file flutter

defaultConfig {
    ...

    multiDexEnabled true
}


//In dependencies
dependencies {
	implementation 'androidx.multidex:multidex:2.0.1'

Example 2: Cannot fit requested classes in a single dex file (# methods: 65710 > 65536)

android {
    defaultConfig {
        ...
        minSdkVersion 21 <----- *here
        targetSdkVersion 26
        multiDexEnabled true <------ *here
    }
    ...
}