1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 private void getHashKey(){ PackageInfo packageInfo = null; try { packageInfo = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNATURES); } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } if (packageInfo == null) Log.e("KeyHash", "KeyHash:null"); for (Signature signature : packageInfo.signatures)..