How to get the objectId from NSArray from PFquery in PARSE.com

Question

My PFQuery returns the following description.I am trying to fetch the objectId of the class YouQuestions .For eg: in the below description Ovx3B1TnaC is the objectId for the first index of quesAray. But I have no idea on how to fetch it.

Printing description of quesArray:
<__NSArrayM 0xe1198f0>(
<YouQuestions:OVx3BlTnaC:(null)> {
    askedUser = "<PFUser:XGvZsNyg9p>";
    attachedImage = "<PFFile: 0xb4c9d20>";
    category = Business;
    geoLocation = "<PFGeoPoint: 0xb4c9ea0>";
    question = "Who is kaka?";
    thumbImage = "<PFFile: 0xb4c9dd0>";
},

This is how I did but returned nil

PFQuery *fetchTimeLine = [PFQuery queryWithClassName:@"YouQuestions"]; [fetchTimeLine whereKeyExists:@"objectId"]; [fetchTimeLine findObjectsInBackgroundWithBlock:^(NSArray *quesArray, NSError *error) { for (int i =0; i<quesArray.count; i++) { PFObject *obj = [quesArray[i] objectForKey:@"objectId"]; [searchobjectIDsArray addObject:obj.objectId]; } }]; for (int i =0; i<quesArray.count; i++) { PFObject *obj = [quesArray[i] objectForKey:@"objectId"]; [searchobjectIDsArray addObject:obj.objectId]; } }];

EDIT:

I fixed it like this

for (PFObject *object in quesArray) { NSLog(@"%@", object.objectId); }

Answer 1

获取ID数组：

NSArray *oids = [quesArray valueForKeyPath:@"objectId"];