Best way to save data?

W1tchcr4ft · February 2011

hey guys, my app i´m coding on right now needs to save one String.
So I was wondering, if its better to write it in a .plis or save it in a file?
I failed on both ways...
could you please give me a link to a tutorial?
Would be wonderfull!
greetz,
W1tchcr4ft

Chobie · February 2011

W1tchcr4ft;299706 said:
hey guys, my app i´m coding on right now needs to save one String.
So I was wondering, if its better to write it in a .plis or save it in a file?
I failed on both ways...
could you please give me a link to a tutorial?
Would be wonderfull!
greetz,
W1tchcr4ft

You should use a plist for a single string. Also learn to search on the Apple's Developer's Resources.

kapps11 · February 2011

for just one string, i would use NSUserDefaults, its a framework layed on top of plists. saving your string would be like this -

[[NSUserDefaults standardUserDefaults] setObject:myString forKey:@\"MyStringKey\"];

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W1tchcr4ft · February 2011

kapps11;299718 said:
for just one string, i would use NSUserDefaults, its a framework layed on top of plists. saving your string would be like this -
[[NSUserDefaults standardUserDefaults] setObject:myString forKey:@\"MyStringKey\"];
Loading

wow, thanx, but does that realy work without declaring anything before?
or do i just have to declare one String from what the MyStringKey will be taken?
greetz, w1tchcr4ft

mariano_donati · February 2011

You don't need to declare anything. You can just retrieve your string with:


NSString* mySavedString = [[NSUserDefaults standardUserDefaults] stringForKey:@\"MyStringKey\"]

tobban2 · February 2011

Chobie;299709 said:
You should use a plist for a single string. Also learn to search on the Apple's Developer's Resources.

If I want to save several strings(uitextfields) and states of segmentedcontrolers. Just a simple "save" button, and then a "load" button. How do I do that?

EDIT:
save:

 NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
	[defaults setObject:[NSNumber numberWithInt:[feedProvider selectedSegmentIndex]] forKey:@\"feedProvider\"];
	[defaults synchronize];

load:

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
feedProvider.selectedSegmentIndex = [[defaults objectForKey:@\"feedProvider\"] intValue];

Easy way to do it with several segmentedControlers?

Edit2:
When trying to save text:

myString = [[NSString alloc] intWithFormat:textfield.text];
[textfield setText:myString];
NSUserDefaults *stringDefault = [NSUserDefaults standardUserDefaults];
[stringDefault setObject:myString forKey:@\"stringKey\"];

- this works but gives warning.
initWithString changed to stringWithString - no warning but app crarshes. Why?

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