Setting up objects

Pelaez — Fri, 09 Oct 2009 21:38:51 +0000

This is something that bothers me when using apps (yes, it’s half a rant, half an advice. I’m actually tagging it “rant”, you’ll probably see that tag grow when I start sending my apps for AppStore aproval), devs don’t take the time to change the default properties of objects, and it’s something actually really easy.

Not knowing what properties objects have is no excuse, because all you have to do is open the header files and scroll to where the properties are declared and see what you can change, most property names are very self-explanatory, and the ones that aren’t enough, usually have comments saying what they do.

So please, devs out there, don’t leave the default values of your objects (unless, of course, that’s the value you need), setting them up properly it really easy to do, and it makes your app stand out.

ObjC class

Pelaez — Thu, 04 Jun 2009 22:45:32 +0000

This is a “template” of a very basic ObjC class, with some things explained, you should copy it and paste it into a text editor to see it more clearly.

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//This USUALLY goes in a file called myClass.h
#import

@interface myClass:NSObject{ //"myClass" is the name of my class, NSObject is the superclass of my class
//Instance variables (These will be the object's attributes)
//Example:
NSString *string;
}
//property declaration (Tells the compiler how to handle the variable, in this case, it will be read only)
@property(readonly) NSString *string;
//declaration of methods
-(void)init; //Instance methods, you need to call these through an object of this class, notice the '-' sign
+(void)doSomething; //Class methods, you call these directly, not through an object [myClass something], notice the '+' sign
@end //end of the interface declaration

//This USUALLY goes in a file called myClass.m
@implement myClass

//sytnesize tells the compiler to create the getter and setter methods depending on how you declared in @property, in this case it will only create a getter method
//If you want to create the getter and setter methods yourself, you can use @dynamic instead
@synthesize string;
//implementation of declared methods
-(void)init{
//Some code
}
+(void)doSomething{
//some code
}
@end //end of the implementation

Kernel Panic » object

Setting up objects

ObjC class