Get Hash key of the apk

Utils.java

// This Method is used to generate "Android Package Name" hash key
 
    public void generateHashkey(){
        try {
            PackageInfo info = getPackageManager().getPackageInfo(
                    com.android,//TODO: change to your package name.
                    PackageManager.GET_SIGNATURES);
            for (Signature signature : info.signatures) {
                MessageDigest md = MessageDigest.getInstance("SHA");
                md.update(signature.toByteArray());
 
                ((TextView) findViewById(R.id.package_name)).setText(info.packageName);
                ((TextView) findViewById(R.id.hash_key)).setText(Base64.encodeToString(md.digest(),
                                                                  Base64.NO_WRAP));
            }
        } catch (PackageManager.NameNotFoundException e) {
            Log.d(TAG, e.getMessage(), e);
        } catch (NoSuchAlgorithmException e) {
            Log.d(TAG, e.getMessage(), e);
        }
    }