Conditionally Add Cell Data to NSMutable Array - ios

Question

Having a lot of trouble with this today. Finally decided to turn to the experts.
I have a standard Table View Controller. Each cell has a built-in UIImage with a tap gesture recognizer that toggles the image back and forth from a green checkmark to a red x. That's working just fine.
What I'm trying to do now is write a conditional statement that says: When the image is a green checkmark, add the cell textLabel to the saved NSMutableArray; else remove red x objects from the array (that may have been added at an earlier time). Currently I'm getting "null" in the console on both accounts.
Here's the original method:
-(void)imageTapped:(UIGestureRecognizer*)gesture
{
UIImageView *selectedImageView=(UIImageView*)[gesture view];
UIImage *imageRed = [UIImage imageNamed:#"checkmark(red).png"];
UIImage *imageGreen = [UIImage imageNamed:#"checkmark(green).png"];
NSString *address = #" ";
NSString *name = #" ";
UITableViewCell *cell = [self.placesTableView cellForRowAtIndexPath:self.placesTableView.indexPathForSelectedRow];
name = cell.textLabel.text;
address = cell.detailTextLabel.text;
NSMutableArray *saved = [[NSMutableArray alloc] initWithObjects:#"%#",#"%#", name, address, nil];
NSString *csv = [NSString stringWithFormat:#"%#, %#", name, address];
if (selectedImageView.image == imageGreen) {
selectedImageView.image = imageRed;
[saved removeObject:csv];
NSLog(#"Deselected" #"%#", name);
} else {
selectedImageView.image = imageGreen;
[saved addObject:csv];
NSLog(#"Selected" #"%#", name);
}
}
EDITED: Suggested method (still not working):
h: #property (strong, nonatomic) NSMutableArray *saved;
m:
- (void)viewDidLoad
{
_saved = [[NSMutableArray alloc] init];
}
-(void)imageTapped:(UIGestureRecognizer*)gesture
{
UIImageView *selectedImageView=(UIImageView*)[gesture view];
UIImage *imageRed = [UIImage imageNamed:#"checkmark(red).png"];
UIImage *imageGreen = [UIImage imageNamed:#"checkmark(green).png"];
NSString *address = #" ";
NSString *name = #" ";
UITableViewCell *cell = [self.placesTableView cellForRowAtIndexPath:self.placesTableView.indexPathForSelectedRow];
name = cell.textLabel.text;
address = cell.detailTextLabel.text;
NSString *csv = [NSString stringWithFormat:#"%#, %#", name, address];
self.saved = [NSMutableArray array];
//NSData *imageRedData = UIImagePNGRepresentation(imageRed);
NSData *imageGreenData = UIImagePNGRepresentation(imageGreen);
NSData *selectedImageViewData = UIImagePNGRepresentation(selectedImageView.image);
if ( [selectedImageViewData isEqual: imageGreenData]) {
selectedImageView.image = imageRed;
[self.saved removeObject:csv];
NSLog(#"Deselected" #"%#", name);
} else {
selectedImageView.image = imageGreen;
[self.saved addObject:csv];
NSLog(#"Selected" #"%#", name);
}
}

Answer 1

Do you mean to create the saved mutable array every time? It won't persist past the end of the imageTapped method. Perhaps you want this NSMutableArray to be a property (or ivar) and add-to or remove from self.saved?

Answer 2

you need to change the UIImage comparison logic, instead of using = operator use isEqual method on NSObject. Here is a solution code which help you.
-(void)imageTapped:(UIGestureRecognizer*)gesture
{
UIImageView *selectedImageView=(UIImageView*)[gesture view];
UIImage *imageRed = [UIImage imageNamed:#"checkmark(red).png"];
UIImage *imageGreen = [UIImage imageNamed:#"checkmark(green).png"];
NSString *address = #" ";
NSString *name = #" ";
UITableViewCell *cell = [self.placesTableView cellForRowAtIndexPath:self.placesTableView.indexPathForSelectedRow];
name = cell.textLabel.text;
address = cell.detailTextLabel.text;
NSMutableArray *saved = [[NSMutableArray alloc] initWithObjects:#"%#",#"%#", name, address, nil];
NSString *csv = [NSString stringWithFormat:#"%#, %#", name, address];
NSData *imageRedData = UIImagePNGRepresentation(imageRed);
NSData *imageGreenData = UIImagePNGRepresentation(imageGreen);
NSData *selectedImageViewData = UIImagePNGRepresentation(selectedImageView.image);
if ( [selectedImageViewData isEqual: imageGreenData]) {
selectedImageView.image = imageRed;
[saved removeObject:csv];
NSLog(#"Deselected" #"%#", name);
} else {
selectedImageView.image = imageGreen;
[saved addObject:csv];
NSLog(#"Selected" #"%#", name);
}
}