FacebookDisplayName on iOS with german umlauts

Question

I have a facebook iOS integration and with my test facebook app everything worked fine. Now after I changed the facebook app id and display name to the live facebook app I get t

Answer 1

Found the solution by my self. The problem results of the different utf8 character representation and the resulting difference in a string comparison. My solution:

[FBSettings setDefaultDisplayName:[[FBSettings defaultDisplayName] precomposedStringWithCanonicalMapping]];