Unable to get all Matching string from NSDictionary iOS - ios

Question

I am new to iOS and little weak in logic.
Can any one help me here,
I want to get all matching data from NSDictionary.
eg:
my tempDict is NSDictionary which contains this,
tempDict:
errorCode = 00;
errorMessage = "<null>";
pastConsultations = (
{
date = "16 December 2016";
day = Friday;
doctorName = "<null>";
localTime = "07:30 AM";
symptoms = q;
today = Yes;
},
{
date = "16 December 2016";
day = Friday;
doctorName = "<null>";
localTime = "07:30 AM";
symptoms = g;
today = Yes;
},
{
date = "13 December 2016";
day = Tuesday;
doctorName = "<null>";
localTime = "12:30 PM";
symptoms = fever;
today = No;
}
);
upcomingConsultations = (
{
date = "16 December 2016";
day = Friday;
localTime = "09:30 PM";
symptoms = "";
today = Yes;
},
{
date = "16 December 2016";
day = Friday;
localTime = "09:30 PM";
symptoms = chj;
today = Yes;
},
{
date = "18 December 2016";
day = Sunday;
localTime = "12:30 PM";
symptoms = "test an incoming ";
today = No;
}
);
}
Inside a pastConsultations key i want to get all nested data which contains AM
i.e my output should be:
{ //Array at 0th index
date = "16 December 2016";
day = Friday;
doctorName = "<null>";
localTime = "07:30 AM";
symptoms = q;
today = Yes;
},
{ //Array at 1st index
date = "16 December 2016";
day = Friday;
doctorName = "<null>";
localTime = "07:30 AM";
symptoms = g;
today = Yes;
}
}
Here is the code i have tried but it is not working, please help where i am making mistake?
NSArray *allKeys;
for (int i=0; i<[tempDict count]; i++) {
allKeys = [[[tempDict valueForKey:#"upcomingConsultations"] objectAtIndex:i] allKeys];
NSString *targetKey = nil;
// NSArray *allKeys = [[tempDict valueForKeyPath:#"pastConsultations"] allKeys];
for (int j = 0; j < [allKeys count]; ++j) {
NSString *key = [allKeys objectAtIndex:i];
NSString *obj = [[[tempDict valueForKey:#"upcomingConsultations"] objectAtIndex:i] objectForKey:key];
if ([obj rangeOfString:searchText].location != NSNotFound) { // searchedString is what you're looking for
targetKey = key;
NSLog(#"found match");
break;
}
}
}

Answer 1

Try this code:
assuming you already have tempDict dictionary loaded.
NSMutableArray *morningPastArr = [[NSMutableArray alloc] init];
NSArray *pastArray = [tempDict objectForKey:#"pastConsultations"];
for (int i=0;i<[pastArray count]; i++) {
NSDictionary *eachPast = [pastArray objectAtIndex:i];
NSString *time = [eachPast objectForKey:#"localTime"];
if (![time rangeOfString:#"AM"].location == NSNotFound) {
[morningPastArr addObject:eachPast];
}
}
// finally you will have like what you need in morningPastArr.
EDIT:
If you want to combine search results, for example, results for AM entry and Friday only you can do like this:
NSMutableArray *morningAndFridayPastArr = [[NSMutableArray alloc] init];
NSArray *pastArray = [tempDict objectForKey:#"pastConsultations"];
for (int i=0;i<[pastArray count]; i++) {
NSDictionary *eachPast = [pastArray objectAtIndex:i];
NSString *time = [eachPast objectForKey:#"localTime"];
NSString *day = [eachPast objectForKey:#"day"];
if ((![time rangeOfString:#"AM"].location == NSNotFound)&&([day isEqualToString:#"Friday"])) {
[morningAndFridayPastArr addObject:eachPast];
}
}

Answer 2

You can use NSPredicate for that as follows:
NSPredicate *predicate;
NSMutableArray *filteredData=[[NSMutableArray alloc]init];
predicate = [NSPredicate predicateWithFormat:#"localTime contains[c] %#",#"AM"];
//OR Use below predicate as suggested by Rishi
predicate = [NSPredicate predicateWithFormat:#"localTime ENDSWITH 'AM'"];
filteredData=[[[tempDict valueForKey:#"pastConsultations"] filteredArrayUsingPredicate:predicate]] mutableCopy];
Hope this will help.