objective c - Using PLists for Persistence on iPhone

Question

Simple question about property lists within an iphone app. I know you can read data in from a plist, but is there a way to write user-inputted data to a plist? If so, how? It's easy to find tutorials on reading information from plists, but I'm having trouble finding resources on writing to plists.

Answer 1

This is how I write data items to a plist:

[myPlistFile setInteger: myInt forKey: @"someKey"];

Of course, you can change setInteger with setBool, etc for different types.

Hope this helps!

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Edit:

If your .plist was a member of an important class or similar...

Header of myClass:

NSUserDefaults* myPreferences;
@property (nonatomic, retain) NSUserDefaults* myPreferences;

.m of myClass:

self.myPreferences = [NSUserDefaults standardUserDefaults]; // load our preferences
[[NSUserDefaults standardUserDefaults] registerDefaults: [NSDictionary dictionaryWithContentsOfFile: [[NSBundle mainBundle]pathForResource: @"nameOfFile" ofType: @"plist"]]]; // now load the custom .plist file