开发者_如何转开发How do I use Quartz 2D to add drop shadow to an UIImage or UIImageView ? Any code samples?imageView.layer.shadowColor = [UIColor blackColor].CGColor;
\"-[NSMutableArray insertObject:atIndex:]: attempt to开发者_如何学运维 insert nil object at 0\'\"
I\'m pulling in an RSS feed and would like to have a background image while the data is loading instead of a bunch of empty cells.
It is well known that UIImage caches its image data when the image is loaded using the imageNamed: method.
I am planning to cache the images from a server and use show it as asort slide show in my App. I would be asynchronously loading the images.
for a MKMapView : UIView how could i convert the content of the mkmapview to a uiimage? although from the mkmapview the end goal (or primary main objective, if you know what i mean) is a NSData var
I allow the user to choose an image from the gallery or take a photo with the camera. I would to save the image path in both cases so that I can use it to display the image in a second moment.
I am consuming a web service that is returning electronic faxes in the form of tif (base 64 encoded text). The thing is it is returning multi-page faxes as one large tiff 开发者_Go百科file and ideally
I\'m looking for a good way to modify some elements of UIImage like brightness, contrast, saturation (for colored images), and colors (colorize).
I want to draw on a UIView that has a background image that I set using the code below: - (void)setBackgroundImageFromData:(NSData *)imageData {
加载中,请稍侯......