cocoa touch - UISlider core data programing -

im working on simple "point based" app.

under settings user set´s number of points needed "goodie" using slider.

-(ibaction) sliderchanged: (id)sender {      uislider *slider = (uislider *) sender;     int progressasint =(int)(slider.value +0.5);     nsstring *newtext = [[nsstring alloc] initwithformat:@"%d",progressasint];     sliderlabel.text = newtext;     [newtext release]; 

this works fine, how store slider value in core data model, , how make slider show stored value when view loads.

hope u can me out :-d

hey gerry3 found error. never set tod-object in settingsviewcontroller, with:

       nsfetchrequest *request = [[nsfetchrequest alloc] init];   [request setentity:[nsentitydescription                     entityforname:@"todo" inmanagedobjectcontext:_context]];  nserror *error = nil; nsarray *array = [_context executefetchrequest:request error:&error]; if (array == nil) {     // deal error... }  if(array.count > 0){     todo = [array objectatindex:0]; } else { // no 1 fetch - generate 1     todo = [nsentitydescription             insertnewobjectforentityforname:@"todo"             inmanagedobjectcontext:_context];  [todo retain]; 

your code works charm .....

thanks skov

the key here core data stores numeric attributes (e.g. integers, floats, etc) nsnumber objects.

say entity called record , has integer attribute called 'progress'.

if create managed object instance of record named 'record', can set progress this:

[record setvalue:[nsnumber numberwithinteger:progressasint] forkey:@"progress"]; 

when want update view value model (usually in viewwillappear:), can progress this:

nsnumber *progressnumber = [record valueforkey:@"progress"]; slider.value = [progressnumber floatvalue]; 

alternatively, if generate class files record entity, can do:

record.progress = [nsnumber numberwithinteger:progressasint]; 

and:

slider.value = [record.progress floatvalue];