In a WebService JSON response is coming. In the response, there is image is coming as a byte array. I have to show the image in a UIImageView. I am trying to convert the byte array to NSData. But not getting how to do that. Any help would be appreciated. I am confident that the byte array has image data in it. Sample Byte array for your reference:
unsigned char array = {
137,
80,
78,
71,
...
66,
96,
130
};
Thanks
You have to convert the JSON to an array of strings first; you can, for example, use the NSJSONSerialization
class:
NSArray *strings = [NSJSONSerialization JSONObjectWithData:theJSONString options:kNilOptions error:NULL];
Then walk the strings array, convert each entry to an integer, and add it to an allocated byte pointer/array:
unsigned c = strings.count;
uint8_t *bytes = malloc(sizeof(*bytes) * c);
unsigned i;
for (i = 0; i < c; i++)
{
NSString *str = [strings objectAtIndex:i];
int byte = [str intValue];
bytes[i] = byte;
}
Then finally make an NSData out of the bytes, then init an UIImage object using it:
NSData *imageData = [NSData dataWithBytesNoCopy:bytes length:c freeWhenDone:YES];
UIImage *image = [UIImage imageWithData:imageData];