把數據寫到文件里面去用

vedioWriter= [[NSMutableData ? alloc] ? init];

//獲取文件路徑

NSString ?*uidplist = [[NSString ? ?alloc] ?initWithFormat:@"vediolist.text"];

NSArray ?*paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);

uidPath= [[paths ? ?objectAtIndex:0] ? stringByAppendingPathComponent:uidplist];

NSData ?*data2 = [NSData ? ? dataWithBytes:buf ? length:actualSize];

Byte*testByte = (Byte*)[data2bytes];

[vedioWriter ? ?appendBytes:testByte ? ?length:data2.length];

[vedioWriter ? ?writeToFile:uidPath ? atomically:YES];

注：不喜勿噴！！！