ios cell background color must change - ios

Question

in my ios app, i have a view with several cells called PersonalDetailTVC. After selecting a value on another view the app returns to PersonalDetailTVC, and I want that the background color of certain cell changes depending on the new value, but the colour only changes when I return to the view again. Can you help me, please?
#import "PersonDetailTVC.h"
#implementation PersonDetailTVC
#synthesize delegate;
#synthesize person = _person;
#synthesize selectedRole;
#synthesize personFirstnameTextField = _personFirstnameTextField;
#synthesize personSurnameTextField = _personSurnameTextField;
#synthesize personRoleTableViewCell = _personRoleTableViewCell;
#synthesize groupColorTableViewCell = _groupColorTableViewCell;
- (void)viewDidLoad
{
NSLog(#"Setting the value of fields in this static table to that of the passed Person");
//self.personNameTextField.text = self.person.name;
self.personFirstnameTextField.text = self.person.firstname;
self.personSurnameTextField.text = self.person.surname;
self.personRoleTableViewCell.textLabel.text = self.person.inRole.name;
self.groupColorTableViewCell.textLabel.text = self.person.hasColor.color;
self.selectedRole = self.person.inRole; // ensure null role doesn't get saved.
if ([self.person.hasColor.color isEqual:#"Grey"]){
self.groupColorTableViewCell.backgroundColor = [UIColor colorWithRed:21.0/255.0 green:255.0/255.0 blue:255.0/255.0 alpha:1];
}
UITapGestureRecognizer *tgr = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(dismissKeyboard)];
[tgr setCancelsTouchesInView:NO];
[self.tableView addGestureRecognizer:tgr];
[super viewDidLoad];
}
- (void)viewDidUnload
{
//[self setPersonNameTextField:nil];
[self setPersonFirstnameTextField:nil];
[self setPersonSurnameTextField:nil];
[self setPersonRoleTableViewCell:nil];
[self setGroupColorTableViewCell:nil];
[super viewDidUnload];
}
- (IBAction)save:(id)sender
{
NSLog(#"Telling the PersonDetailTVC Delegate that Save was tapped on the PersonDetailTVC");
self.person.firstname = self.personFirstnameTextField.text; // Set Firstname
self.person.surname = self.personSurnameTextField.text; // Set Surname
[self.person setInRole:self.selectedRole];
[self.person setHasColor:self.selectedRole];// Set Relationship!!!
[self.person.managedObjectContext save:nil]; // write to database
[self.delegate theSaveButtonOnThePersonDetailTVCWasTapped:self];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender // !
{
if ([segue.identifier isEqualToString:#"Person Role Segue"])
{
NSLog(#"Setting PersonDetailTVC as a delegate of PersonRoleTVC");
PersonRoleTVC *personRoleTVC = segue.destinationViewController;
personRoleTVC.delegate = self;
personRoleTVC.selectedPerson = self.person;
}
else {
NSLog(#"Unidentified Segue Attempted!");
}
}
- (void)dismissKeyboard {
[self.view endEditing:TRUE];
}
- (void)roleWasSelectedOnPersonRoleTVC:(PersonRoleTVC *)controller
{
self.personRoleTableViewCell.textLabel.text = controller.selectedRole.name;
self.groupColorTableViewCell.textLabel.text = controller.selectedRole.color;
self.selectedRole = controller.selectedRole;
NSLog(#"PersonDetailTVC reports that the %# role was selected on the PersonRoleTVC", controller.selectedRole.name);
[controller.navigationController popViewControllerAnimated:YES];
}
#end

Answer 1

As far as i can see, you're not changing a color anywhere in the provided code. While reading the code, i noticed a few things, so i thought i share it with you, maybe it helps:
If I understand correctly you are using a UITableViewCell without a UITableView. This is actually not a problem as UITableViewCell derives from UIView, but the cell will not have the behaviour of a UITableViewCell (because this is usually controlled by a UITableView). When adding a UITableViewCell manually as a subview, the cell will have the default behaviour of a UIView.
In your save: method I see the following 2 lines:
[self.person setInRole:self.selectedRole];
[self.person setHasColor:self.selectedRole];// Set Relationship!!!
Are you intentionally passing self.selectedRole to a property hasColor (or setHasColor: method)? Since I don't know the types of these objects this might be OK, but looks like you should set a color there.
In the roleWasSelectedOnPersonRoleTVC: method your are currently setting the text property twice:
self.personRoleTableViewCell.textLabel.text = controller.selectedRole.name;
self.groupColorTableViewCell.textLabel.text = controller.selectedRole.color;
Shouldn't that last line be something like this?
self.groupColorTableViewCell.textLabel.textColor = controller.selectedRole.color;