iOS/Objective C: Converting RGB Data to UIImage

i need help converting an 24/32 bit RGB raw image to uiimage. I've tried the examples here from Paul Solt and others, but nothing work. Anybody could please show an example or tutorial? The image data is hold in nsdata and i would like to have a jpg or png image. Thx Thorsten I'm using the code by Paul Solt, it does something, but the image looks like it have four times the image information in one image. i cant post an image here: EDIT: i added the lines at the beginning of the method between the comments, now it works :-) ``` + (UIImage *) convertBitmapRGBA8ToUIImage:(unsigned char *) buffer withWidth:(int) width withHeight:(int) height { // added code char* rgba = (char*)malloc(width*height*4); for(int i=0; i < width*height; ++i) { rgba[4*i] = buffer[3*i]; rgba[4*i+1] = buffer[3*i+1]; rgba[4*i+2] = buffer[3*i+2]; rgba[4*i+3] = 255; } // size_t bufferLength = width * height * 4; CGDataProviderRef provider = CGDataProviderCreateWithData(NULL, rgba, bufferLength, NULL); size_t bitsPerComponent = 8; size_t bitsPerPixel = 32; size_t bytesPerRow = 4 * width; CGColorSpaceRef colorSpaceRef = CGColorSpaceCreateDeviceRGB(); if(colorSpaceRef == NULL) { NSLog(@"Error allocating color space"); CGDataProviderRelease(provider); return nil; } CGBitmapInfo bitmapInfo = kCGBitmapByteOrderDefault | kCGImageAlphaPremultipliedLast; CGColorRenderingIntent renderingIntent = kCGRenderingIntentDefault; CGImageRef iref = CGImageCreate(width, height, bitsPerComponent, bitsPerPixel, bytesPerRow, colorSpaceRef, bitmapInfo, provider, // data provider NULL, // decode YES, // should interpolate renderingIntent); uint32_t* pixels = (uint32_t*)malloc(bufferLength); if(pixels == NULL) { NSLog(@"Error: Memory not allocated for bitmap"); CGDataProviderRelease(provider); CGColorSpaceRelease(colorSpaceRef); CGImageRelease(iref); return nil; } CGContextRef context = CGBitmapContextCreate(pixels, width, height, bitsPerComponent, bytesPerRow, colorSpaceRef, bitmapInfo); if(context == NULL) { NSLog(@"Error context not created"); free(pixels); } UIImage *image = nil; if(context) { CGContextDrawImage(context, CGRectMake(0.0f, 0.0f, width, height), iref); CGImageRef imageRef = CGBitmapContextCreateImage(context); // Support both iPad 3.2 and iPhone 4 Retina displays with the correct scale if([UIImage respondsToSelector:@selector(imageWithCGImage:scale:orientation:)]) { float scale = [[UIScreen mainScreen] scale]; image = [UIImage imageWithCGImage:imageRef scale:scale orientation:UIImageOrientationUp]; } else { image = [UIImage imageWithCGImage:imageRef]; } CGImageRelease(imageRef); CGContextRelease(context); } CGColorSpaceRelease(colorSpaceRef); CGImageRelease(iref); CGDataProviderRelease(provider); if(pixels) { free(pixels); } return image; } ```