大图片分段发送 iphone

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#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];