Adding and saving data on UITableView - ios

Question

I have a method that is working but its not saving the data that I enter.
This is the code I use to enter data on a
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 1) {
NSString *tempTextField = [alertView textFieldAtIndex:0].text;
if (!numbers) {
numbers = [[NSMutableArray alloc] init];
}
[[NSUserDefaults standardUserDefaults] setObject:tempTextField forKey:#"Save"];
[numbers insertObject:tempTextField atIndex:0];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
[self.myTableView insertRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
} }
It is using a UIAlertView with a plain text input. I try to use an NSUSerDefaults to save the data with the method above and I'm able to retrieve the data on the viewDidLoad with this code
-(void)viewDidLoad {
[super viewDidLoad];
NSArray *siteNameValue = [[NSUserDefaults standardUserDefaults] valueForKey:#"Save"];
numbers = [[NSMutableArray alloc] initWithObjects:siteNameValue, nil];
}
But it would only save one of the data that is entered, it doesnt save multiple data. Any leads?
the variable numbers is an NSMutableArray.

Answer 1

You can store a NSMutableArray object created alertView:clickedButtonAtIndex in the user defaults and reuse it in viewDidLoad:
[numbers insertObject:tempTextField atIndex:0];
[[NSUserDefaults standardUserDefaults] setObject:numbers forKey:#"Save"];
You can get the array with same content in viewDidLoad as follows:
NSMutableArray *numbers = [[[NSUserDefaults standardUserDefaults] arrayForKey:#"Save"] mutableCopy];

Answer 2

Problem is you are saving just one NSString, not a NSArray in NSUserDefaults.
You need to save "numbers" (whole NSArray) instead and also load it as an array (additional encapsulation on loading is not necessary).
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 1) {
NSString *tempTextField = [alertView textFieldAtIndex:0].text;
if (!numbers) {
numbers = [[NSMutableArray alloc] init];
}
[[NSUserDefaults standardUserDefaults] setObject:numbers forKey:#"Save"];
[numbers insertObject:tempTextField atIndex:0];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
[self.myTableView insertRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
}
}
-(void)viewDidLoad {
[super viewDidLoad];
numbers = [[NSUserDefaults standardUserDefaults] valueForKey:#"Save"];
}

Answer 3

Solution
This is the method to ADD and SAVE data on the tableview using a UIALertView plain text style.
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 1) {
NSString *tempTextField = [alertView textFieldAtIndex:0].text;
if (!numbers) {
numbers = [[NSMutableArray alloc] init];
}
[numbers insertObject:tempTextField atIndex:0];
[[NSUserDefaults standardUserDefaults] setObject:numbers forKey:#"3"];
[[NSUserDefaults standardUserDefaults] synchronize];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
[self.myTableView insertRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
}
}
below is to retrieve it under the viewDidLoad
NSMutableArray *siteNameValue = [[[NSUserDefaults standardUserDefaults] arrayForKey:#"3"] mutableCopy];
numbers = siteNameValue;