Question

i ma adding value in an array by using this syntax

[Listoflatlong addObject: sObject.startLocLat];

but it is giving error that is error: incompatible type for argument 1 of addObject:. I am adding double value of sObject.startLocLat in array Listoflatlong. How remove this error?

Answer 1

If you are working with a numerical primitive, you should add an NSNumber object to an NSMutableArray, e.g. to add a double, use the +numberWithDouble: class method:

[Listoflatlong addObject:[NSNumber numberWithDouble:sObject.startLocLat]];

As a matter of Objective-C convention, you should name your mutable array instance uncapitalized, i.e. listOfLatLong. Classes get capitalized. Instance variables do not (should not).