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iOS

Posted by Chris Holloway
Chris Holloway
2,427 Points

Table View programming - simulator displays first and last item in dummy array only

I am working on a project that involves configuring table view cells.

I have set up a "dummy data store" in FPLTableViewController.m, within the viewDidLoad method as such:

FPLFlightEvent *flight1 = [[FPLFlightEvent alloc] init];
    flight1.departureAirport = @"KRNM";
    flight1.arrivalAirport = @"KNYL";
    flight1.totalFlightTime = @1.1;
    flight1.flightDate = @"12 Feb 2013";

    FPLFlightEvent *flight2 = [[FPLFlightEvent alloc] init];
    flight2.departureAirport = @"KNYL";
    flight2.arrivalAirport = @"KRNM";
    flight2.totalFlightTime = @0.9;
    flight2.flightDate = @"13 Feb 2013";

    FPLFlightEvent *flight3 = [[FPLFlightEvent alloc] init];
    flight2.departureAirport = @"KRNM";
    flight2.arrivalAirport = @"KVNY";
    flight2.totalFlightTime = @1.1;
    flight2.flightDate = @"14 Feb 2013";

    FPLFlightEvent *flight4 = [[FPLFlightEvent alloc] init];
    flight2.departureAirport = @"KVNY";
    flight2.arrivalAirport = @"KRNM";
    flight2.totalFlightTime = @1.0;
    flight2.flightDate = @"15 Feb 2013";

FPLFlightEvent is a custom class with 4 properties as depicted. I create a total of four variables *flight1 through *flight4 all with similar data.

I then initialize the array for display in the table view:

self.flightEvents = [NSMutableArray arrayWithObjects:flight1, flight2, flight3, flight4, nil];

I have set numberOfSectionsInTableView to return 1.

Here is numberOfRowsInSection:

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    // Return the number of rows in the section.
    return self.flightEvents.count;
}

Here is cellForRowAtIndexPath:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"LogbookPrototypeCell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];

    FPLFlightEvent *flightEvent = [self.flightEvents objectAtIndex:indexPath.row];
    cell.textLabel.text = flightEvent.flightDate;

    return cell;
}

Any ideas why the sim is only displaying the first and last objects in the "dummy data" array?

Stone Preston
Stone Preston
42,016 Points

do you have 4 rows (first has text, second is blank, third is blank, fourth has text)?

please post the full code where you initialize all four of your flight events

3 Answers

Stone Preston
Stone Preston
42,016 Points 
FPLFlightEvent *flight3 = [[FPLFlightEvent alloc] init];
    flight2.departureAirport = @"KRNM";
    flight2.arrivalAirport = @"KVNY";
    flight2.totalFlightTime = @1.1;
    flight2.flightDate = @"14 Feb 2013";

    FPLFlightEvent *flight4 = [[FPLFlightEvent alloc] init];
    flight2.departureAirport = @"KVNY";
    flight2.arrivalAirport = @"KRNM";
    flight2.totalFlightTime = @1.0;
    flight2.flightDate = @"15 Feb 2013";

you are just setting the properties for flight2 over and over again. you need to change it to something like this

FPLFlightEvent *flight3 = [[FPLFlightEvent alloc] init];
    flight3.departureAirport = @"KRNM";
    flight3.arrivalAirport = @"KVNY";
    flight3.totalFlightTime = @1.1;
    flight3.flightDate = @"14 Feb 2013";

    FPLFlightEvent *flight4 = [[FPLFlightEvent alloc] init];
    flight4.departureAirport = @"KVNY";
    flight4.arrivalAirport = @"KRNM";
    flight4.totalFlightTime = @1.0;
    flight4.flightDate = @"15 Feb 2013";
Chris Holloway
Chris Holloway
2,427 Points
Chris Holloway
Chris Holloway
2,427 Points

Wow, that was fast. I will edit the post to include the relevant code. Sorry, trying to save space I guess.

Chris Holloway
Chris Holloway
2,427 Points
Chris Holloway
Chris Holloway
2,427 Points

Aargh. syntax. Sigh. Thanks for the help nice job.