小编Ran*_*mar的帖子

我从android下面的代码中获取了哈希键:

try {
PackageInfo packageInfo = getPackageManager().getPackageInfo(getPackageName(),
PackageManager.GET_SIGNATURES);
for (Signature signature : packageInfo.signatures) {
MessageDigest md = MessageDigest.getInstance("SHA");
md.update(signature.toByteArray());
Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
}
}
catch (NameNotFoundException e1) {
Log.e("Name not found", e1.toString());
}
catch (NoSuchAlgorithmException e) {
Log.e("No such an algorithm", e.toString());
}
catch (Exception e){
Log.e("Exception", e.toString());
}

但它是无效密钥...请建议如何验证Facebook登录的哈希密钥....