iOS 点击按钮,跳转QQ群

  - (BOOL)joinGroup:(NSString *)groupUin key:(NSString *)key{

      NSString *urlStr = [NSString stringWithFormat:@"mqqapi://card/show_pslcard?src_type=internal&version=1&uin=%@&key=%@&card_type=group&source=external", @"252832148",@"d2b26edf701959915753245605d87e415506cd38e20211d32eb4d43a6106c3c0"];
      NSURL *url = [NSURL URLWithString:urlStr];
      if([[UIApplication sharedApplication] canOpenURL:url]){
         [[UIApplication sharedApplication] openURL:url];
         return YES;
      }
     else return NO;
}