How you can decrease application size by 60% (In only 5 minutes)? Mobile devices always have limited resources. They have a limited amount of battery, limited storage, limited processing power, limited RAM, limited internet connectivity … and the list goes on. This doesn’t matter if you are targeting Android or iOS. This is the universal truth. …

proguard-rules.pro

 release {
    //Enable the proguard
    minifyEnabled true
    shrinkResources true
    proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), "proguard-rules.pro"

    //Other parameters
    debuggable false
    jniDebuggable false
    renderscriptDebuggable false
    signingConfig playStoreConfig //Add your own signing config
    pseudoLocalesEnabled false
    zipAlignEnabled true
}

defaultConfig {
    //...
    //...
    //...

    //strip other than english resources
    resConfigs "en"
}