EXC_BAD_ACCESS iPhone Dev - objective-c

Question

I am very new to development in Objective C but have a lot of experience in object orientated development in c# ASP. I've been trying to make a simple iPhone app where a PickerView control is accessing a data source.
In my header file (InstaTwitViewController.h) I have declared the following:
#interface InstaTwitViewController : UIViewController
<UIPickerViewDataSource, UIPickerViewDelegate> {
NSArray* activities;
NSArray* feelings;
}
I now try to inititialise my arrays in the viewDidLoad functions in my InstaTwitViewController.m file:
activities = [[NSArray alloc] initWithObjects:#"sleeping", #"eating", #"thinking", nil];
feelings = [[NSArray alloc] initWithObjects:#"psyched", #"sad", #"happy", nil];
but when I run the code on the simulator I get a Thread 1: Program recieved signal "ESC_BAD_ACCESS" error on the first line of code (where I allocate data to the activities array).
I put a break point on the line and it recognises it as an NSArray called activities but says "Invalid Summary" at the end.
Does anyone know why I am getting this error? I have looked at many threads about the ESC_BAD_ACCESS error but none have seemed to have helped me.

Answer 1

.h
#interface InstaTwitViewController : UIViewController <UIPickerViewDataSource, UIPickerViewDelegate> {
NSArray* activities;
NSArray* feelings;
}
#property (nonatomic, retain) NSArray* activities;
#property (nonatomic, retain) NSArray* feelings;
#end
.m
#import "your.h"
#implementation InstaTwitViewController
#synthesize activities, feelings;
- (void)viewDidLoad {
[super viewDidLoad];
[self.activities addObject ~ /* Do your code here */];
}
#end
Becareful you should stay on self.~ if you don't want to lose your value.
By the way, I am Korean~ ^^;