Likewise we can save our previously selected file using an NSSavePanel. It too is easy to use, just as the NSOpenPanel. For a save action to make sense we need to have some data to save, so in this example we will copy an existing file (self.myURL) to the new URL that the save panel […]
NSOpenPanel is surprisingly easy to use: create the panel, call the openPanel method, and handle the returned URL object in a block. In this example we invoke the panel from a button in the main window, then display the returned URL in a textLabel: – (IBAction)loadFile:(id)sender { // create an open documet panel NSOpenPanel *panel […]
This podcast describes how to gain access to WordPress even without username, password or working email address. It’s happened to the best of us: you forgot your Password you forgot what User you are even worse, you’ve forgotten which email you’ve used when you installed WordPress worse still, your email no longer exists Fear not, … Read more
If the App Delegate has something that your top view controller needs then you simply pass it the required object via a property set on the top view controller. This is easy when your top view controller is also the root view controller. However, when you embed your top view controller in a Navigation Controller, […]
Likewise, here’s how we return the number of rows using a fetched results controller – as provided by the Master / Detail template: – (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { id <NSFetchedResultsSectionInfo> sectionInfo = [[self.fetchedResultsController sections]objectAtIndex:section]; return [sectionInfo numberOfObjects]; }
I can never remember how to do this. Here’s the method provided by the Master / Detail template when using Core Data: – (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return [[self.fetchedResultsController sections] count]; }
By default Mac Apps use XML as store type when saving in Core Data, even though it can use other formats – such as SQLite, which is the default on iOS. Here’s a way to quickly convert one into the other. Note that this is designed as a one-off operation to create a new store […]
I was excited to find out that it is possible to write a Mac App with Core Data completely without code! This magic is possible with something that’s not available in iOS (yet) called Cocoa Bindings. You provide the user controls you need in Xcode, then control-drag your way to extensive functionality and happiness. Before […]
