Objective-C Fundamentals

Completing Rental Manager v1.0, App Store here we come!
53
Having modified RootViewController.h to specify the new data types related to
storing rental property details, you’re ready to declare details about an initial set of
rental properties. Open up RootViewController.m and insert the contents of the following
listing directly below the line #import "RootViewController.h".
Listing 2.4
RootViewController.m
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
RentalProperty properties[] = {
{ @"13 Waverly Crescent, Sumner", TownHouse, 420.0f },
{ @"74 Roberson Lane, Christchurch", Unit, 365.0f },
{ @"17 Kipling Street, Riccarton", Unit, 275.9f },
{ @"4 Everglade Ridge, Sumner", Mansion, 1500.0f },
{ @"19 Islington Road, Clifton", Mansion, 2000.0f }
};
The main portion of listing 2.4 declares a variable called properties. This is an array
of RentalProperty structures. The array is initialized with details of five example
properties in your portfolio by using a combination of the array and structure initialization
syntaxes discussed earlier in this chapter.
Now all that’s left to do is to provide suitable tableView:numberOfRowsInSection:
and tableView:cellForRowAtIndexPath: replacements that refer back to the data in
the properties array to satisfy their requests. These can be found in the following listing.
Listing 2.5
RootViewController.m
- (NSInteger)tableView:(UITableView *)tableView
numberOfRowsInSection:(NSInteger)section {
{
return ARRAY_SIZE(properties);
}
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
{
static NSString *CellIdentifier = @"Cell";
UITableView *cell =
[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc]
initWithStyle:UITableViewCellStyleSubtitle
reuseIdentifier:CellIdentifier] autorelease];
}
cell.textLabel.text = properties[indexPath.row].address;
cell.detailTextLabel.text =
[NSString stringWithFormat:@"Rents for $%0.2f per week",
properties[indexPath.row].weeklyRentalPrice];
return cell;
}