Custom drawing UICollectionViewCell subViews for performance optimization

Custom drawing UICollectionViewCell subViews for performance optimization

In my UICollectionViewCell subclass I have this code to layout the
subViews I want:
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
_titleLabel = [[UILabel alloc]initWithFrame:CGRectMake(97, 10,
190, 40)];
_titleLabel.font = [UIFont boldFlatFontOfSize:22];
_titleLabel.backgroundColor = [UIColor clearColor];
_fromLabel = [[UILabel alloc]initWithFrame:CGRectMake(97, 35, 190,
30)];
_fromLabel.font = [UIFont flatFontOfSize:14];
_fromLabel.backgroundColor = [UIColor clearColor];
UIView *containerView = [[UIView alloc]initWithFrame:CGRectMake(0,
0, 90, 90)];
containerView.backgroundColor = [[UIColor
colorWithPatternImage:[UIImage imageNamed:@"cream_pixels"]]
colorWithAlphaComponent:0.8];
[self.contentView addSubview:containerView];
_iconView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 50,
50)];
[_iconView setCenter:containerView.center];
_iconView.backgroundColor = [UIColor whiteColor];
_iconView.contentMode = UIViewContentModeScaleAspectFit;
_iconView.image = [UIImage imageNamed:@"envelopeIcon.png"];
_iconView.backgroundColor = [UIColor clearColor];
[containerView addSubview:_iconView];
_dateLabel = [[UILabel alloc]initWithFrame:CGRectMake(97,
self.contentView.frame.size.height - 23,
self.contentView.frame.size.width-97, 25)];
[_dateLabel setBackgroundColor:[UIColor clearColor]];
[_dateLabel setFont:[UIFont boldFlatFontOfSize:13]];
[_dateLabel setTextColor:[[UIColor wetAsphaltColor]
colorWithAlphaComponent:0.6f]];
[_dateLabel setTextAlignment:NSTextAlignmentLeft];
[_dateLabel setLineBreakMode:NSLineBreakByCharWrapping];
[_dateLabel setNumberOfLines:0];
_typeLabel = [[UILabel alloc]initWithFrame:CGRectMake(0.f, 0.f ,
4, self.contentView.frame.size.height)];
_typeLabel.layer.cornerRadius = 0.f;
_typeLabel.backgroundColor = [UIColor belizeHoleColor];
[self.contentView addSubview:_titleLabel];
[self.contentView addSubview:_fromLabel];
[self.contentView addSubview:_typeLabel];
[self.contentView addSubview:_dateLabel];
self.backgroundColor = [[UIColor cloudsColor]
colorWithAlphaComponent:1.f];
self.layer.cornerRadius = 3.2f;
self.layer.masksToBounds = NO;
self.layer.contentsScale = [UIScreen mainScreen].scale;
self.layer.borderColor = [[UIColor silverColor]
colorWithAlphaComponent:0.2].CGColor;
self.layer.borderWidth = 0.5f;
self.layer.shadowOpacity = 0.35f;
self.layer.shadowRadius = 3.f;
self.layer.shadowOffset = CGSizeMake(0, 3.f);
self.layer.shadowPath = [UIBezierPath
bezierPathWithRect:self.bounds].CGPath;
self.layer.shouldRasterize = YES;
[_titleLabel setText:@"Nuevo Mensaje"];
}
return self;
}
I understand that for performance, it's recommended that the subviews are
added to the cell using custom drawing, and not by layering the contents
of it.
How can I achieve this?