getAndroidSignature.java

      private static final String = "";
      try {
	        PackageInfo info = getPackageManager().getPackageInfo(
	                PACKAGE_NAME, 
	                PackageManager.GET_SIGNATURES);
	        Log.i("","Test");
	        for (Signature signature : info.signatures) {
	            MessageDigest md = MessageDigest.getInstance("SHA");
	            md.update(signature.toByteArray());
	            Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
	            Log.i("", Base64.encodeToString(md.digest(), Base64.DEFAULT));
	            }
	    } catch (NameNotFoundException e) {

	    } catch (NoSuchAlgorithmException e) {

	    }