将 NSString 转换为 Int 的问题

Question

由于某种原因，当我将此 NSString 转换为整数时，我得到一个完全随机（但一致）的数字。

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    // do something with the data
    // receivedData is declared as a method instance elsewhere
    NSLog(@"Succeeded! Received %d bytes of data",[receivedData length]);

    // release the connection, and the data object
    [connection release];

    debtString = [[NSString alloc] initWithData:receivedData encoding:NSUTF8StringEncoding];

    NSLog(@"String form: %@", debtString);
    [receivedData release];

    int debtInt = [debtString intValue];
    NSLog(@"Integer form: %i", debtInt);

}

这是我的控制台输出：

2011-07-19 11:43:18.319 National Debt[50675:207] Succeeded! Received 14 bytes of data
2011-07-19 11:43:18.320 National Debt[50675:207] String form: 14342943000000
2011-07-19 11:43:18.320 National Debt[50675:207] Integer form: 2147483647

如果我在NSLog(@"Integer form: %i", debtInt); 行上设置断点，并将鼠标悬停在上行中的debtString 值上，则摘要无效。我能想到的唯一原因是我在转换之前释放了debtString，但这显然不是真的。

Answer 1

您的字符串的 int 值高于 int 的最大值。因此它显示 int 的最大值为 2.147.483.647