Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Home isEqualToString:] - ios

Question

I am fetching data from a web service:
//temp1 is NSDictionary
//responseArr1 is NSMutableArray
for(temp1 in responseArr1).......,
{
quesTxt = [[temp1 objectForKey:#"question_text"] stringByReplacingOccurrencesOfString:#"%PROFILENAME%" withString:del.onlyFirstName];
quesID = [temp1 objectForKey:#"idlife_stage_question"];
Home *objHome=[[Home alloc] init];
objHome.homeQuesTxt = quesTxt;
objHome.homeQuesID = quesID;
[quesArray addObject:objHome];
//[quesArray addObject:[[temp1 objectForKey:#"question_text"] stringByReplacingOccurrencesOfString:#"%PROFILENAME%" withString:del.onlyFirstName]];//this works fine
}
All the date when i try to populate in picker view it gives exception.
picker view delegate:
- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view {
UILabel *retval = (id)view;
if (!retval) {
retval= [[UILabel alloc] initWithFrame:CGRectMake(0.0f, 0.0f, [pickerView rowSizeForComponent:component].width, [pickerView rowSizeForComponent:component].height)];
}
retval.text = [quesArray objectAtIndex:row];.........// **EXCEPTION HERE**...
retval.font = [UIFont boldSystemFontOfSize:14];
retval.numberOfLines = 3;
return retval;
}
sample of my web service:
{
"idlife_stage_question" = 35;
"life_stage_idlife_stage" = 1;
"profile_idprofile" = 0;
"question_text" = "When %PROFILENAME% first smiled?";..//%PROFILENAME% replaces with user name which i have
sequence = 34;
}
Home is a subclass of NSObject
Please help.

Answer 1

retval.text = [quesArray objectAtIndex:row];
Here you are accessing quesArray.
Which is as : [quesArray addObject:objHome];
And objHome is : Home *objHome=[[Home alloc] init];
So you error is here, you tried to put the object into the retval which expects an NSString.
You need to use something as :
retval.text = [[quesArray objectAtIndex:row] homeQuesTxt]; //or anyother property that you want to show in text

Answer 2

retval.text = [quesArray objectAtIndex:row];
Your retval.text is a string and you are assigning it an object
You could do like this
Home *newHome=[quesArray objectAtIndex:row];
retval.text=newHome.homeQuesTxt;

Answer 3

The quesArray is populated with Home Objects
Home *home = quesArray[row];
retval.text = home.homeQuesTxt;