转自：http://hi.baidu.com/zhu410289616/item/0de0262910886011097508c2

1.系统默认的颜色设置

//无色

cell.selectionStyle = UITableViewCellSelectionStyleNone;

//蓝色

cell.selectionStyle = UITableViewCellSelectionStyleBlue;

//灰色

cell.selectionStyle = UITableViewCellSelectionStyleGray;

2.自定义颜色和背景设置

改变UITableViewCell选中时背景色：

UIColor *color = [[UIColoralloc]initWithRed:0.0green:0.0blue:0.0alpha:1];//通过RGB来定义自己的颜色

cell.selectedBackgroundView = [[[UIView alloc] initWithFrame:cell.frame] autorelease];

cell.selectedBackgroundView.backgroundColor = [UIColor xxxxxx];

3.自定义UITableViewCell选中时背景

cell.selectedBackgroundView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"cellart.png"]] autorelease];

还有字体颜色

cell.textLabel.highlightedTextColor = [UIColor xxxcolor];  [cell.textLabel setTextColor:color];//设置cell的字体的颜色

4.设置tableViewCell间的分割线的颜色

[theTableView setSeparatorColor:[UIColor xxxx ]];

5.十六进制字符串转uicolor

+(UIColor*)colorWithHexString:(NSString*)hexstring{

NSString*cString = [[hexstring stringByTrimmingCharactersInSet:[NSCharacterSetwhitespaceAndNewlineCharacterSet]] uppercaseString];

// String should be 6 or 8 characters

if([cString length] < 6) return[UIColorblackColor];

// strip 0X if it appears

if([cString hasPrefix:@"0X"]) cString = [cString substringFromIndex:2];

if([cString hasPrefix:@"#"]) cString = [cString substringFromIndex:1];

if([cString length] != 6) return[UIColorblackColor];

// Separate into r, g, b substrings

NSRangerange;

range.location= 0;

range.length= 2;

NSString*rString = [cString substringWithRange:range];

range.location= 2;

NSString*gString = [cString substringWithRange:range];

range.location= 4;

NSString*bString = [cString substringWithRange:range];

// Scan values

unsignedintr, g, b;

[[NSScannerscannerWithString:rString] scanHexInt:&r];

[[NSScannerscannerWithString:gString] scanHexInt:&g];

[[NSScannerscannerWithString:bString] scanHexInt:&b];

return[UIColorcolorWithRed:((float) r / 255.0f)

green:((float) g / 255.0f)

blue:((float) b / 255.0f)

alpha:1.0f];

}