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UIScrollView sample

self.scrollView.contentSize = CGSizeMake(self.mainView.frame.size.width, self.mainView.frame.size.height);

    [self.scrollView addSubview:self.mainView];

color with RGBA

- (UIColor *)colorWithRGBA:(NSUInteger)color

{

    return [UIColor colorWithRed:((color >> 24) & 0xFF) / 255.0f

                           green:((color >> 16) & 0xFF) / 255.0f

                            blue:((color >> 8) & 0xFF) / 255.0f

                           alpha:1.0f];

}

use : [self colorWithRGBA:041143255];

iOS Image From UIView

- (UIImage*)imageFromView:(UIView *)view 
{
    // Create a graphics context with the target size
    // On iOS 4 and later, use UIGraphicsBeginImageContextWithOptions to take the scale into consideration
    // On iOS prior to 4, fall back to use UIGraphicsBeginImageContext
    CGSize imageSize = [view bounds].size;
    if (NULL != UIGraphicsBeginImageContextWithOptions)
        UIGraphicsBeginImageContextWithOptions(imageSize, NO, 0);
    else
        UIGraphicsBeginImageContext(imageSize);

    CGContextRef context = UIGraphicsGetCurrentContext();

    // -renderInContext: renders in the coordinate space of the layer,
    // so we must first apply the layer's geometry to the graphics context
    CGContextSaveGState(context);
    // Center the context around the view's anchor point
    CGContextTranslateCTM(context, [view center].x, [view center].y);
    // Apply the view's transform about the anchor point
    CGContextConcatCTM(context, [view transform]);
    // Offset by the portion of the bounds left of and above the anchor point
    CGContextTranslateCTM(context,
                          -[view bounds].size.width * [[view layer] anchorPoint].x,
                          -[view bounds].size.height * [[view layer] anchorPoint].y);

    // Render the layer hierarchy to the current context
    [[view layer] renderInContext:context];

    // Restore the context
    CGContextRestoreGState(context);

    // Retrieve the screenshot image
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    return image;
}

Add UIView Slider Down

lbView.backgroundColor = [UIColor blackColor];

    lbView.frame = CGRectMake(0, 0, 320, 480);

    lbView.alpha = 0.7;

    UIButton *removeLbView = [UIButton buttonWithType:UIButtonTypeCustom];

    removeLbView.frame = CGRectMake(0, 0, 320, 480);

    [removeLbView addTarget:self action:@selector(removeShareLocationTapped) forControlEvents:UIControlEventTouchUpInside];

    [lbView addSubview:removeLbView];

    [self.view addSubview:lbView];

    self.myLocationView.frame = CGRectMake(0, -400, 320, 480);

    [self.view addSubview:self.myLocationView];

    

    [UIView beginAnimations:nil context:nil];

    [UIView setAnimationDuration:0.5];

    self.myLocationView.frame = CGRectMake(0, 0, 320, 400);

    [UIView commitAnimations];

- (void)removeShareLocationTapped {

    [lbView removeFromSuperview];

    

    [UIView beginAnimations:nil context:nil];

    [UIView setAnimationDuration:0.5];

    self.myLocationView.frame = CGRectMake(0, -400, 320, 400);

    [UIView commitAnimations];

    

}

iOS UITableView Tutorial

.h

@property (retain, nonatomic) NSArray *tableData;

.m

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Initialize table data
    self.tableData = [NSArray arrayWithObjects:@"Egg Benedict", @"Mushroom Risotto", @"Full Breakfast", @"Hamburger", @"Ham and Egg Sandwich", @"Creme Brelee", @"White Chocolate Donut", @"Starbucks Coffee", @"Vegetable Curry", @"Instant Noodle with Egg", @"Noodle with BBQ Pork", @"Japanese Noodle with Pork", @"Green Tea", @"Thai Shrimp Cake", @"Angry Birds Cake", @"Ham and Cheese Panini", nil];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [self.tableData count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *simpleTableIdentifier = @"SimpleTableItem";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];

    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
    }

    cell.textLabel.text = [self.tableData objectAtIndex:indexPath.row];
    return cell;
}

iOS formatted String For Duration

- (NSString*)formattedStringForDuration:(NSTimeInterval)duration

{

    NSInteger minutes = floor(duration/60);

    NSInteger seconds = round(duration - minutes * 60);

    return [NSString stringWithFormat:@"%d:%02d", minutes, seconds];

}

- (NSString *)stringFromTimeInterval:(NSTimeInterval)interval {

    NSInteger ti = (NSInteger)interval;

    NSInteger seconds = ti % 60;

    NSInteger minutes = (ti / 60) % 60;

    NSInteger hours = (ti / 3600);

    return [NSString stringWithFormat:@"%02i:%02i:%02i", hours, minutes, seconds];

}