NSData and UIImage


NSData and UIImage



I am trying to load UIImage object from NSData, and the sample code was to NSImage, I guess they should be the same. But just now loading the image, I am wondering what's the best to troubleshoot the UIImage loading NSData issue.


How do you get the number keypad to come up in an iPhone web app?

1:

How do I show the keyboard by default in UITextView?
UIImage has an -initWithData: method. C++ library integration to iPhone applicationFrom the docs: "The data in the data parameter need be formatted to match the file format of one of the system’s supported image types.". Managing multiple asynchronous NSURLConnection connections
Open Source sound engineProblem with rotating clock needle

2:

dismissing modalViewController moves main view buttons around iphone
I didn't try UIImageJPEGRepresentation() before, although UIImagePNGRepresentation works fine for me, and conversion between NSData and UIImage is dead simple:. get viewport position in javascript in iphone safari
NSData *imageData = UIImagePNGRepresentation(image); UIImage *image=[UIImage imageWithData:imageData]; 

3:

Try this to convert an image to NSdata:.
UIImage *img = [UIImage imageNamed:@"image.png"]; NSData *data1 = UIImagePNGRepresentation(img); 

4:

theData should be a NSData object which already contains the data. You need to did the file loading/downloading to the NSData object before it is used. You must inspect it by using NSLog on theData and see if it contains the valid data..


60 out of 100 based on 35 user ratings 170 reviews