JSON partial string - ios

Question

How can i return the part of a string in a cell in Xcode?
I have a json responce:
{"Email":"john#appleseed.com","Password":"4321","lijst":"eieren, kaas, melk, 2 uien, brood(volkoren)"}
how can i get the value's at "lijst" in different cells in xcode?
So cell 1 = Eieren
cell 2 = Kaas
etc...
this is the code to display it all in one cell:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell)
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier];
switch (indexPath.row) {
case 0:
cell.textLabel.text = [self name];
cell.detailTextLabel.text = #"Name";
break;
case 1: {
NSString *email = [details objectForKey:#"Email"];
if (!email)
email = #"No email";
if ([email isKindOfClass:[NSArray class]])
email = #"<Multiple emails>";
cell.textLabel.text = email;
cell.detailTextLabel.text = #"Email";
break;
}
case 2:
cell.textLabel.text = self.details[#"lijst"];
cell.detailTextLabel.text = #"List";
break;
default:
break;
}
return cell;
}

Answer 1

It appears that you have parsed this JSON into a dictionary called self.details. You could then, as #bdesham pointed out, get an array of the individual values with componentsSeparatedByString:. For example, if you had a NSArray property called lijstArray, you could do something like:
NSString *lijstString = self.details[#"lijst"];
self.lijstArray = [lijstString componentsSeparatedByString:#", "];
Then, lijstArray[0] will have the first value, lijstArray[1] the second, etc. The number of values is [lijstArray count].
The above only works if you know that there will be exactly one and only one space after the commas. If you don't know that for sure, you'd just use #"," for the separator, but then trim the whitespace. For example, if you declared the lijstArray property to be a NSMutableArray, you could do something like:
NSString *lijstString = self.details[#"lijst"];
NSArray *tempArray = [lijstString componentsSeparatedByString:#","];
self.lijstArray = [NSMutableArray array];
for (NSString *lijstValue in tempArray) {
[self.lijstArray addObject:[lijstValue stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]];
}
Whichever approach you adopt, having populated an array, lijstArray, you can now use that in your cellForRowAtIndexPath. For example, let's assume your tableview had two sections, section 0 being the name and email, and section 1 being the individual lijstArray values, e.g.:
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 2;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (section == 0)
return 2;
else if (section == 1)
return [self.lijstArray count];
return 0; // we never should get here, but in the spirit of defensive programming, let's make sure we handle this
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell)
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier];
if (indexPath.section == 0) {
switch (indexPath.row) {
case 0:
cell.textLabel.text = [self name];
cell.detailTextLabel.text = #"Name";
break;
case 1: {
NSString *email = [details objectForKey:#"Email"];
if (!email)
email = #"No email";
if ([email isKindOfClass:[NSArray class]])
email = #"<Multiple emails>";
cell.textLabel.text = email;
cell.detailTextLabel.text = #"Email";
break;
}
default:
break;
}
} else if (indexPath.section == 1) {
cell.textLabel.text = self.lijstArray[indexPath.row];
}
return cell;
}