Android app doesn't work after published it by generate signed app

Question

I create an app and it work on emulator. It works on debug apk on device, but when I build it with generate signed app it doesn't work? what is wrong and how I can debug it on device on signed sate?

Answer 1

In my project doesn't run signed app. I changed minifyEnabled value from true to false then problem is solve . this bad solution. I'm looking for a better way.

build.gradle :

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