How to write a data in plist? - ios

Question

I have followed this answer to write data to the plist
How to write data to the plist?
But so far my plist didn't change at all.
Here is my code :-
- (IBAction)save:(id)sender
{
NSString *path = [[NSBundle mainBundle] pathForResource:#"drinks" ofType:#"plist"];
NSString *drinkName = self.name.text;
NSString *drinkIngredients = self.ingredients.text;
NSString *drinkDirection = self.directions.text;
NSArray *values = [[NSArray alloc] initWithObjects:drinkDirection, drinkIngredients, drinkName, nil];
NSArray *keys = [[NSArray alloc] initWithObjects:DIRECTIONS_KEY, INGREDIENTS_KEY, NAME_KEY, nil];
NSDictionary *dict = [[NSDictionary alloc] initWithObjects:values forKeys:keys];
[self.drinkArray addObject:dict];
NSLog(#"%#", self.drinkArray);
[self.drinkArray writeToFile:path atomically:YES];
}
Do I need to perform something extra?
I am new to iPhone SDK so any help would be appreciated.

Answer 1

You are trying to write the file to your application bundle, which is not possible. Save the file to the Documents folder instead.
NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
path = [path stringByAppendingPathComponent:#"drinks.plist"];
The pathForResource method can only be used for reading the resources that you added to your project in Xcode.
Here's what you typically do when you want to modify a plist in your app:
1. Copy the drinks.plist from your application bundle to the app's Documents folder on first launch (using NSFileManager).
2. Only use the file in the Documents folder when reading/writing.
UPDATE
This is how you would initialize the drinkArray property:
NSString *destPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
destPath = [destPath stringByAppendingPathComponent:#"drinks.plist"];
// If the file doesn't exist in the Documents Folder, copy it.
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath:destPath]) {
NSString *sourcePath = [[NSBundle mainBundle] pathForResource:#"drinks" ofType:#"plist"];
[fileManager copyItemAtPath:sourcePath toPath:destPath error:nil];
}
// Load the Property List.
drinkArray = [[NSArray alloc] initWithContentsOfFile:destPath];