iOS数据 分割代码

//可以将大的数据分割为指定大小的小数据块，方便传输用~

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#define A_RECEIVE 2500000

NSData *videoData = [NSData dataWithContentsOfURL:[NSURL fileURLWithPath:theImagePath]];

NSLog(@"视频文件的大小为:%d",videoData.length);

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

//159600

int lastIValue = 0;

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

{

lastIValue = i+A_RECEIVE;

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

NSLog(@"HHHHHHHHH :%@",rangeStr);

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

[videoDataArray addObject:subData];

}

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

NSLog(@"MMMMMMM :%@",rangeStr);

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

[videoDataArray addObject:subData];

原文地址：http://www.devdiv.com/blog-215400-52780.html