store array values from another view controller - ios

Question

I have two view controllers(viewController and popUpViewController). When i open app, viewController will load. It has buttons. When i click on button, image will be opened in popUpViewController. Then i click close button on popUpViewController,i am dismissing popUpViewController. My scenario is, when i click button in viewController i have to take opened time and i click close button on popUpViewController, i have to take end time.Both should be stored in an array. But array is showing as nil. I am using the following code.
viewController.m
viewDidLoad:
fileOpenedValues = #[#"",#"" ,#""];
fileOpenedKeys = #[#"File Name",#"STime",#"ETime"];
fileOpened = [[NSMutableDictionary alloc] initWithObjects:fileOpenedValues forKeys:fileOpenedKeys];
[fileOpenedArr addObject:fileOpened];
-(void) storeArrayFromPopUp :(NSString *)fname second:(NSString *)mname third:(NSString *)lname
{
fileOpenedValues = #[fname ,mname ,lname];
fileOpenedKeys = #[#"File Name",#"STime",#"ETime"];
fileOpened = [[NSMutableDictionary alloc] initWithObjects:fileOpenedValues forKeys:fileOpenedKeys];
[fileOpenedArr addObject:fileOpened];
}
popUpViewController.m
[baseObj storeArrayFromPopUp :openedFileName second:fileOpenStime third:fileOpenEtime];
After calling storeArrayFromPopUp. fileOpenedArr is showing as nil.
Please advice.

Answer 1

#implementation ViewController {
NSString *strStartTime;
NSString *strEndTime;
NSMutableArray *arrTime;
}
- (void)viewDidLoad {
[super viewDidLoad];
arrTime = [[NSMutableArray alloc]init];
strStartTime = #"";
strEndTime = #"";
}
-(void)viewWillAppear:(BOOL)animated {
//check start has value means popupview controller was open.
//viewWillAppear always call when you close the popup.
if (strStartTime.length > 0) {
strEndTime = [self getCurrentTime];
NSDictionary *dic = [[NSDictionary alloc]initWithObjectsAndKeys:strStartTime,#"StartTime",strEndTime,#"EndTime", nil];
[arrTime addObject:dic]; //you can have all the start and endtime details in the arrTime array.
strStartTime = #"";
strEndTime = #"";
}
}
-(IBAction)btnShowPopupClicked:(id)sender {
//Set the start time when popup is going to open.
strStartTime = [self getCurrentTime];
[self performSegueWithIdentifier:#"imagePopup" sender:nil];
}
-(NSString *)getCurrentTime {
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeStyle:NSDateFormatterMediumStyle];
[dateFormatter setTimeZone:[NSTimeZone localTimeZone]];
NSString *currentTime = [dateFormatter stringFromDate:[NSDate date]];
return currentTime;
}