Question

I made a new xcode project using the master detail core data template. By default, it saves the date and makes that the title of each cell in the table. I tried changing it so It displays a string instead but it crashes every time.

I changed this

[newManagedObject setValue:[NSDate date] forKey:@"timeStamp"];

to this

[newManagedObject setValue:name forKey:@"name"];

I have a string called name and i changed the default nsdate “timeStamp” attribute to string “name”.

What did I do wrong?

Answer 1

I suggest you to delete the App on your device or simulator first, then rebuild & run will solve your issue. As you’ve modified the model.

Note: Every time you’ve modified the model, you’d better clean the original core data first.