Singed apk gives ClassNotFoundException in android

Question

I am generating singed apk using eclipse Export Signed Application Package. After generating signed apk i have installed that into my device at that time I got

Answer 1

I had the same problem after disabling minifyEnabled true fixed the problem. if the problem only exist on signed apk. check buildtypes release on module.gradle

 buildTypes {
    release {
     // minifyEnabled true

    }
}