当移动设备已经具有Facebook应用程序并显示“无效哈希键” android之类的错误时，facebook集成无法正常工作？

Question

In my application i want to integrate the facebook. I wrote all the code for this.But whenever i click the facebook login button it showing one popup like "Invalid key hash and the key hash XXX does not match with any stored key hash" If my mobile not having facebook application, then it is working. If my mobile is having facebook app the facebook integration is not possible to me.

for hash key: (oncreate)

 try {
            Log.v("TAG_PACKNAME",""+"UUUU");
            PackageInfo info = getPackageManager().getPackageInfo(
                    "Your package name",
                    PackageManager.GET_SIGNATURES);
            for (Signature signature : info.signatures) {
                MessageDigest md = MessageDigest.getInstance("SHA");
                md.update(signature.toByteArray());
                Log.v("TAG_PACKNAME",""+ Base64.encodeToString(md.digest(), Base64.DEFAULT));  // not printing

            }
        } catch (PackageManager.NameNotFoundException e) {

        } catch (NoSuchAlgorithmException e) {

        }

i got hash key and release key too. i added both developement key and release key in facebook console. But whenever i click the facebook login button it pop ups like "invalid hash key. the hash key not matched with already stored hashkey" please any one help me out.

Answer 1

When you are redirected to Facebook app and when it shows invalid keyhash, The keyhash XXXX doesnot match with any stored keyhashes. Copy the keyHash XXXX add = to that and paste XXXX= in the Key hashes section in Facebook

Answer 2

You need generate your release keyhash with this:

Mac/osx:

keytool -exportcert -alias <RELEASE_KEY_ALIAS> -keystore <RELEASE_KEY_PATH> | openssl sha1 -binary | openssl base64

Windows:

keytool -exportcert -alias <RELEASE_KEY_ALIAS> -keystore <RELEASE_KEY_PATH> | openssl sha1 -binary | openssl base64

And your debug key like this:

On OS X, run:

keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | openssl sha1 -binary | openssl base64

On Windows, run:

keytool -exportcert -alias androiddebugkey -keystore %HOMEPATH%\.android\debug.keystore | openssl sha1 -binary | openssl
base64