UIView *myTabView = [[UIView alloc] initWithFrame:frame];

    CAGradientLayer *gradient = [CAGradientLayer layer];

    gradient.frame = myTabView.bounds;

    gradient.colors = [NSArray arrayWithObjects:

                       (id)[[UIColor colorWithRed:0.1 green:0.1 blue:0.1 alpha:0.8 ] CGColor]

                       , (id)[[UIColor colorWithRed:0.1 green:0.1 blue:0.1 alpha:0.8 ] CGColor]

                       , (id)[[UIColor colorWithRed:0.1 green:0.1 blue:0.1 alpha:0.8 ] CGColor]

                       , (id)[[UIColor blackColor] CGColor]

                       , (id)[[UIColor blackColor] CGColor], nil];

    [myTabView.layer insertSublayer:gradient atIndex:0];

    [[self.tabBarController tabBar] insertSubview:myTabView  atIndex:0];

    [myTabView  release];

- (void)drawRect:(CGRect)rect

    CGContextRef currentContext = UIGraphicsGetCurrentContext();

 

    CGGradientRef glossGradient;

    CGColorSpaceRef rgbColorspace;

    size_t num_locations = 2;

    CGFloat locations[2] = { 0.0, 1.0 };

    CGFloat components[8] = { 1.0, 1.0, 1.0, 0.35,  // Start color

         1.0, 1.0, 1.0, 0.06 }; // End color

 

    rgbColorspace = CGColorSpaceCreateDeviceRGB();

    glossGradient = CGGradientCreateWithColorComponents(rgbColorspace, components, locations, num_locations);

 

    CGRect currentBounds = self.bounds;

    CGPoint topCenter = CGPointMake(CGRectGetMidX(currentBounds), 0.0f);

    CGPoint midCenter = CGPointMake(CGRectGetMidX(currentBounds), CGRectGetMidY(currentBounds));

    CGContextDrawLinearGradient(currentContext, glossGradient, topCenter, midCenter, 0);

 

    CGGradientRelease(glossGradient);

    CGColorSpaceRelease(rgbColorspace);