JsbBridgeWrapper 调用报错Thread 1: EXC_BAD_ACCESS (code=1, address=0x0)

Creator 3.x
#1 
 JsbBridgeWrapper* wrapper = [JsbBridgeWrapper sharedInstance];

[wrapper addScriptEventListener:@"gameShare" listener:^void(NSString* arg) {
    NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:[arg dataUsingEncoding:NSUTF8StringEncoding] 
                                                       options:0 error:nil];
    [self gameShare:dict];
}];

在回调中跳用[self gameShare:dict];必定报错，注释就可以，是为什么呢？

#2

已解决，要改下作用域