Question

我坚持这种方法而且我不知道为什么！谁能指点我一些源代码？非常感谢！这是我的源代码：

NSAutoreleasePool *pool = [[NSAutoreleasePool alloc]init];
.......
readData = [readFileHandle readDataOfLength:defaultLen]
NSData *decryptedData = nil;
 //check is last buffer of file
NSUInteger exLen = [readData length] % 16;
NSUInteger decryptionLen = [readData length] - exLen;
NSData *dataForDecryption = nil;
   if(exLen != 0)
   {

     stuck at here-> [readData getBytes:dataForDecryption length:decryptionLen];
      //
      decryptedData = [dataForDecryption AES256DecryptWithKey:KEY];
      self.isEndOfFile = YES;
    }
    else
        decryptedData = [readData AES256DecryptWithKey:KEY];
[readFileHandle closeFile];
.......
[pool drain];

我使用了一些功能，例如：

NSData *dataForDecryption = [[[NSData alloc] initWithBytes:readData length:decryptionLen]autorelease];
NSData *dataForDecryption = [NSData dataWithBytes:readData length:decryptionLen];

但我得到同样的错误。当我使用时 dataForDecryption = [readFileHandle readDataOfLength:decryptionLen]; 虽然它不是EOF，但它在上面的位置停留并且读取的大小为0。

由于

Answer 1

 stuck at here-> [readData getBytes:dataForDecryption length:decryptionLen];

您正在传递dataForDecryption NSData*，但参数应该是缓冲区，即void*。如果您想要NSData*，则应使用subdataWithRange:等方法。

dataForEncryption = [readData subdataWithRange:NSRangeMake(0, decryptionLen)];

为NSData分配数据时是否存在滞留/泄漏？

1 个答案: