Background image not displayed on UIView - iphone

Question

I have a class that implements "UIView" and inside - (void)drawRect:(CGRect)rect method I add some custom buttons to self. Inside a UIViewController I declare an instance of this view and i add it to self.view.
If i do this in - (void)viewDidLoad, everything works perfect, but if I create a method that is called when I push a button, and add that view to self.view, the buttons background is displayed after a few second. Till then only the name of the button appears written in white.
What do i do wrong?
Regards
#implementation CustomButton
#synthesize isPressed, buttonViewNumber;
- (id)initWithFrame:(CGRect)frame
title:(NSString *)title
tag:(int)tag
{
self = [super initWithFrame:frame];
if (self) {
[self setTitle:title forState:UIControlStateNormal];
[self setTag:tag];
self.titleLabel.font = [UIFont fontWithName:#"Helvetica" size:14];
self.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
self.contentEdgeInsets = UIEdgeInsetsMake(0, 5, 0, 0);
[self setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
[self setBackgroundImage:[[UIImage imageNamed:#"btn_white_add.png"] stretchableImageWithLeftCapWidth:20.0 topCapHeight:0.0] forState:UIControlStateNormal];
[self addTarget:self action:#selector(didSelect) forControlEvents:UIControlEventTouchUpInside];
self.isPressed = NO;
}
return self;
}
#implementation ButtonsView
#synthesize listOfButtons;
- (id)initWithFrame:(CGRect)frame bundle:(NSArray *)data
{
self = [super initWithFrame:frame];
if (self) {
self.backgroundColor = [UIColor clearColor];
listOfNames = [[NSArray arrayWithArray:data] retain];
listOfButtons = [[NSMutableArray alloc] init];
currentViewNumber = 0;
viewNumber = 0;
}
return self;
}
- (void)drawRect:(CGRect)rect
{
CGSize maximumLabelSize = CGSizeMake(300,24);
UIFont *buttonFont = [UIFont fontWithName:#"Helvetica" size:14.0];
float lineSize = 0;
float lineNumber = 0;
NSArray *listOfFrameX = [NSArray arrayWithObjects:
[NSString stringWithFormat:#"%d",FIRST_LINE_Y],
[NSString stringWithFormat:#"%d",SECOND_LINE_Y],
[NSString stringWithFormat:#"%d",THIRD_LINE_Y],
nil];
for (int i = 0; i < [listOfNames count]; i++) {
CGSize expectedLabelSize = [[[listOfNames objectAtIndex:i] objectForKey:#"name"] sizeWithFont:buttonFont
constrainedToSize:maximumLabelSize
lineBreakMode:UILineBreakModeTailTruncation];
if ((lineSize + expectedLabelSize.width) > 260) {
lineNumber++;
lineSize = 0;
}
if (lineNumber > 2) {
viewNumber ++;
lineSize = 0;
lineNumber = 0;
}
CGRect newFrame = CGRectMake(lineSize,
[[listOfFrameX objectAtIndex:lineNumber] floatValue],
expectedLabelSize.width+30,
24);
CustomButton *myButton = [[CustomButton alloc] initWithFrame:newFrame
title:[[listOfNames objectAtIndex:i] objectForKey:#"name"]
tag:[[[listOfNames objectAtIndex:i] objectForKey:#"id"] intValue]];
myButton.buttonViewNumber = viewNumber;
[listOfButtons addObject:myButton];
if (viewNumber == 0) {
[self addSubview:myButton];
}
lineSize += expectedLabelSize.width + 40;
[myButton release];
}
}
this way it works:
- (void)viewDidLoad
{
[super viewDidLoad];
placeholders = [[NSArray arrayWithObjects:
something,something, something,something,nil] retain];
CGRect frame = CGRectMake(10, 247, 300, 84);
buttonsView = [[ButtonsView alloc] initWithFrame:frame bundle:placeholders];
[self.view addSubview:buttonsView];
and like this is doesnt work:
- (void)getCompanyNames:(id)result
{
NSArray *listOfCompanies = (NSArray *)result;
CGRect frame = CGRectMake(10, 247, 300, 84);
buttonsView = [[ButtonsView alloc] initWithFrame:frame bundle:listOfCompanies];
[self.view addSubview:buttonsView];
}
i need to add the "buttonsView" object to self.view after the -viewDidLoad

Answer 1

drawRect: isn't exactly the place you should be creating subviews (Buttons are subviews) for your view. This should either go into initWithFrame: or awakeFromNib, depending on your view creation method: programmatically or using a nib.