Setting up a UIScrollView

This creates a simple scrollview.  Define an IBOutlet in the .h file, and configure in Interface Builder the same size as it's container;

@synthesize stampsScrollView;

- (void)viewDidLoad {
    [stampsScrollView setScrollEnabled:YES];
    [stampsScrollView setContentSize:CGSizeMake(250.0, 800.0)];

Simple check for a device feature (email in this case)

canSendMail is a class method (+) so therefore can be called on the class itself;

        if ([mailClass canSendMail])

        {

            [self displayComposerSheet];

        } else {

            [self launchMailAppOnDevice];

        }

Very strange error message w/Mail Composer

The following console listing from our new app using the MailComposer code -

Running…
[Switching to thread 11779]
[Switching to thread 11779]
Re-enabling shared library breakpoint 1
Re-enabling shared library breakpoint 2
continue
2011-06-03 18:43:37.897 PostCards[554:707] Backside of PostCard should display
2011-06-03 18:43:38.649 PostCards[554:707] This launches the email composer
2011-06-03 18:43:38.676 PostCards[554:707] The email composer should display

2011-06-03 18:43:45.801 PostCards[554:1603] DA|Could not open the lock file at /tmp/DAAccountsLoading.lock. We'll load the accounts anyway, but bad things may happen

[Switching to thread 13315]

Sure would like to  know what the DAAccountsLoading.lock is???

checking online forums ...............

Simple UIImage transforms (scale & translate)

This snippet Moves and Scales an image.  Both actions are combined with a concatenation (CGAffineTransformConcat) function

- (void)transformMoveNScale        //performs a translation & scaling of the image

{

    CGAffineTransform transformTranslate = CGAffineTransformMakeTranslation(-330.0, 15.0);

    CGAffineTransform transformScale = CGAffineTransformMakeScale(0.5, 0.5);

    CGAffineTransform transformImage = CGAffineTransformConcat(transformScale, transformTranslate);

    [self.postCard setTransform:transformImage];

}

iPad in Landscape only

// Allows the program to only run in landscape
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return (interfaceOrientation == UIInterfaceOrientationLandscapeLeft) ||
    (interfaceOrientation == UIInterfaceOrientationLandscapeRight);
}