gistfile1.m

#define PADDING_VERTICAL 5.0f
#define BUTTON_HEIGHT 40.0f
#define BUTTON_WIDTH 160.0f
#define BUTTON_ORIGIN_X (320.0f - BUTTON_WIDTH)/2.0f
#define BUTTON_ORIGIN_Y 20.0f

- (void)initButtons{
	NSLog(@"MainViewController.initButtons");
	CGFloat totalHeight = BUTTON_ORIGIN_Y;
	
	for(NSDictionary* section in arraySections){
		NSString* title = [section objectForKey:@"title"];
		
		UIButton* button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
		[button addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchDown];
		[button setTitle:title forState:UIControlStateNormal];
		button.frame = CGRectMake(BUTTON_ORIGIN_X, totalHeight, BUTTON_WIDTH, BUTTON_HEIGHT);
		[self.view addSubview:button];
		
		totalHeight = totalHeight + BUTTON_HEIGHT + PADDING_VERTICAL;
	} 
}