字符串64位转码

 

CommonFunc.h

"question_state" = 0;

    "question_txt" = 56qB54S25oOz6LW36KOF5L2c6Iul5peg5YW25LqL5oiR6ZyA6KaB;

    "user_id" = 12095;

    "user_photo" = "http://zhengsongyc.vicp.cc:8090/up_images/user_photo/201411615036165.png";

 LabTitle.text = StringFromBASE64([dic objectForKey:@"question_txt"]);