我在玩realm.io。我写了几个对象，现在我想查询它们。我的数据类:classSample:RLMObject{dynamicvarsampleKey:String=""}和我的查询代码@IBActionfuncreadLocalRecord(sender:UIButton){lets:NSString=NSString.stringWithString("sampleKey==SampleValue")letp:NSPredicate=NSPredicate(format:"sampleKey=%@",argumentArray:NSArray(object:NSString.st