Byte Array to UIImage Objective-C

Question

I have a Bytearray

unsigned char *outputData = (unsigned char *)malloc(sizeof(unsigned char) * w * h * 4);

    outputData[y * h * 4 + x * 4 + 0] = all; //a         


        

Answer 1

    CGColorSpaceRef colorSpace=CGColorSpaceCreateDeviceRGB();
    CGContextRef bitmapContext=CGBitmapContextCreate(outputData, w, h, 8, 4*w, colorSpace,  kCGImageAlphaPremultipliedLast | kCGBitmapByteOrderDefault);
    CFRelease(colorSpace);
    free(outputData);
    CGImageRef cgImage=CGBitmapContextCreateImage(bitmapContext);
    CGContextRelease(bitmapContext);

    UIImage * newimage = [UIImage imageWithCGImage:cgImage];
    CGImageRelease(cgImage);