FacebookSign.java 文件源码

public static void keyHash(Context context){

        // Add code to print out the key hash
        try {
            PackageInfo info = context.getPackageManager().getPackageInfo(
                    "barreto.alessandro.feedlist",
                    PackageManager.GET_SIGNATURES);
            for (Signature signature : info.signatures) {
                MessageDigest md = MessageDigest.getInstance("SHA");
                md.update(signature.toByteArray());
                Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
            }
        } catch (PackageManager.NameNotFoundException | NoSuchAlgorithmException ignored) {
            Log.e("Facebook",ignored.getMessage());
        }

    }