Question

I want to create a plist file like this:

in code, and then it will be in the Caches folder.
I already know how to fetch the data.

Answer 1

You can do it like this:

//Create a Mutant Dictionary
NSMutableDictionary *theMutantDict = [[NSMutableDictionary alloc] init];

//Fill it with data
[theMutantDict setObject:@"John" forKey:@"Name"];
[theMutantDict setObject:@"Doe" forKey:@"Lastname"];

//Then search for cache dir 
NSString *libraryDir = [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, 
                  NSUserDomainMask, YES) objectAtIndex:0];
NSString *cacheDir = [libraryDir stringByAppendingPathComponent:@"Caches"];

//Then write the file
NSString *filePath = [cacheDir stringByAppendingString:@"/TheFile.plist"];
[theMutantDict writeToFile:filePath atomically:YES];