A tappable button cell for UITableViews

BPButtonTableViewCell.h

//
//  BPButtonTableViewCell.h
//  Brewtool
//
//  Created by Jon Olson on 9/24/09.
//  Copyright 2009 Ballistic Pigeon, LLC. All rights reserved.
//

#import <UIKit/UIKit.h>

typedef enum {
	BPButtonTableViewCellStylePlain,
	BPButtonTableViewCellStyleRed
} BPButtonTableViewCellStyle;

@interface BPButtonTableViewCell : UITableViewCell {
	id target;
	SEL action;
}

- (id)initWithStyle:(BPButtonTableViewCellStyle)cellStyle;
- (id)initWithStyle:(BPButtonTableViewCellStyle)cellStyle labelText:(NSString *)labelText target:(id)aTarget action:(SEL)anAction;

- (void)setTarget:(id)aTarget action:(SEL)anAction;

@end

BPButtonTableViewCell.m

//
//  BPButtonTableViewCell.m
//  Brewtool
//
//  Created by Jon Olson on 9/24/09.
//  Copyright 2009 Ballistic Pigeon, LLC. All rights reserved.
//

#import "BPButtonTableViewCell.h"


@implementation BPButtonTableViewCell

- (id)init {
    if (self = [super initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil]) {
		// Prevent ugly blueness
		self.selectionStyle = UITableViewCellSelectionStyleNone;
		
		// Set text properties
		self.textLabel.textAlignment = UITextAlignmentCenter;
		self.textLabel.textColor = [UIColor whiteColor];
		self.textLabel.font = [UIFont boldSystemFontOfSize:20.0];
		self.textLabel.shadowOffset = CGSizeMake(0, -1);
		self.textLabel.shadowColor = [UIColor colorWithWhite:0 alpha:0.5];
		
    }
	
    return self;
}

- (id)initWithStyle:(BPButtonTableViewCellStyle)cellStyle {
	if (self = [super initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil]) {
		// Prevent ugly blueness
		self.selectionStyle = UITableViewCellSelectionStyleNone;
		
		UIColor *textColor = nil;
		UIFont *font = nil;
		UIImage *background = nil;
		BOOL shadow = NO;
		
		switch (cellStyle) {
			case BPButtonTableViewCellStylePlain:
				textColor = [UIColor colorWithRed:0.22 green:0.33 blue:0.53 alpha:1];
				font = [UIFont boldSystemFontOfSize:15.0];
				shadow = NO;
				break;
			case BPButtonTableViewCellStyleRed:
				textColor = [UIColor whiteColor];
				font = [UIFont boldSystemFontOfSize:20.0];
				background = [UIImage imageNamed:@"redButton.png"];
				shadow = YES;
				break;
		}

		// Set text properties
		self.textLabel.textAlignment = UITextAlignmentCenter;
		self.textLabel.textColor = textColor;
		self.textLabel.font = font;
		if (shadow) {
			self.textLabel.shadowOffset = CGSizeMake(0, -1);
			self.textLabel.shadowColor = [UIColor colorWithWhite:0 alpha:0.5];			
		}
		
		if (background) {
			// Set button background image
			UIImage *image = [background stretchableImageWithLeftCapWidth:6.0 topCapHeight:0.0];
			self.backgroundColor = [UIColor clearColor];
			self.backgroundView = [[UIImageView alloc] initWithImage:image];
		}
	}
	
	return self;
}

- (id)initWithStyle:(BPButtonTableViewCellStyle)cellStyle labelText:(NSString *)labelText target:(id)aTarget action:(SEL)anAction {
	if (self = [self initWithStyle:cellStyle]) {
		self.textLabel.text = labelText;
		[self setTarget:aTarget action:anAction];
	}
	
	return self;
}

- (id)initWithLabelText:(NSString *)labelText target:(id)aTarget action:(SEL)anAction {
	if (self = [self init]) {
		self.textLabel.text = labelText;
		[self setTarget:aTarget action:anAction];
	}
	
	return self;
}

#pragma mark -
#pragma mark Ensuring the cell always displays correctly

- (UITableViewCellEditingStyle)editingStyle {
	return UITableViewCellEditingStyleNone;
}

- (BOOL)shouldIndentWhileEditing {
	return NO;
}

#pragma mark -
#pragma mark Handling selection and touches (triggering)

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
	[super setSelected:selected animated:animated];
	
	if (selected)
		[target performSelector:action withObject:self];
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
	if ([touches count] != 1)
		return;
	UITouch *touch = [touches anyObject]; // Singleton set
	CGPoint location = [touch locationInView:self];
	if (CGRectContainsPoint(self.bounds, location))
		[target performSelector:action withObject:self];
}

- (void)setTarget:(id)aTarget action:(SEL)anAction {
	if (target != aTarget) {
		[target release];
		target = [aTarget retain];		
	}
	action = anAction;
}

- (void)dealloc {
	[target release];
	[super dealloc];
}

@end

redButton.png