大图片分段发送 iphone

#define A_RECEIVE 1000

    NSData *imageData = UIImageJPEGRepresentation([UIImage imageNamed:@"xxx.jpg"], 1);

    NSMutableArray *imageDataArray = [[NSMutableArray alloc] init];

    for (int i = 0; i<= [imageData length]-A_RECEIVE; i+=A_RECEIVE) {

        lastIValue = i+A_RECEIVE;

        NSString *rangeStr = [NSString stringWithFormat:@"%i,%i",i,A_RECEIVE];

        NSData *subData = [imageData subdataWithRange:NSRangeFromString(rangeStr)];

        [imageDataArray addObject:subData];

    }

 

    NSString *rangeStr = [NSString stringWithFormat:@"%i,%i",lastIValue,[imageData length]%A_RECEIVE];

    NSData *subData = [imageData subdataWithRange:NSRangeFromString(rangeStr)];

    [imageDataArray addObject:subData];

     

    NSMutableData *newData = [[NSMutableData alloc] init];

    for (int i = 0; i< [imageDataArray count]; i++) {

        [newData appendData:[imageDataArray objectAtIndex:i]];

    }

    [imageDataArray release];

     

    UIImage *newImage = [[UIImage alloc] initWithData:newData];

    [newData release];

    [testImage setImage:newImage];

    [newImage release];