Way to protect from Lucky Patcher / play licensing [closed]

To stop your app from being distributed and repackaged in cracked form, see the below for a signature check. Then at least the only people who can make your app work are those who have got LuckyPatcher installed. Once LuckyPatcher creates a modified APK, the signature is changed.

You need to find out what your signature is when you have run a release version. In the example below it’s -343553346 .

String sigChk = MySigCheck.MySigCheck(context);
if (sigChk.equalsIgnoreCase("Y")){
    handle signature pass
}

Create a class

public class MySigCheck {
public static String MySigCheck(Context context) {
    String sigChk = "B";

    Signature[] signature = new Signature[0];

    try {
        signature = context.getPackageManager().getPackageInfo(context.getPackageName(), PackageManager.GET_SIGNATURES).signatures;

        Log.d("yourapp", Integer.toString(signature[0].hashCode())); << Prints your signature. Remove once you know this and have changed it below.

    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }

    if (signature[0].hashCode() == -343553346){
        sigChk = "Y";
    }

        return sigChk;
    }
}