Emailing full screen of iPhone app

Question

I am developing an iPhone app for creating images using built in graphics and user defined text.

I want to be able to have my app, with built in graphics and user de

Answer 1

To expand upon Brent's answer, the following code will grab a screenshot and save it out to the Documents directory as a PNG called screenshot.png:

UIWindow *screenWindow = [[UIApplication sharedApplication] keyWindow];

UIGraphicsBeginImageContext(screenWindow.frame.size);
[screenWindow.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *screenshot = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

NSData *screenshotPNG = UIImagePNGRepresentation(screenshot);

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];

NSError *error = nil;
[screenshotPNG writeToFile:[documentsDirectory stringByAppendingPathComponent:@"screenshot.png"] options:NSAtomicWrite error:&error];

This is a little crude, as it will leave a blank spot near the top of the screen for the title bar, and doesn't appear to grab the content from CAEAGLLayers.

Also, I don't believe you can use the standard mailto:// URL construction, followed by openURL, to send MIME-encoded attachments. Maybe the 3.0 SDK fixes this, but I've yet to play with it. You may need to use something like sksmtpmessage to send the message directly from within your application.