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创建不工作日志AtPath 不工作 - 目标C
原标题:createDirectoryAtPath not working - Objective C

我正在尝试创建一个新的目录, 并且应该比这个要简单得多。 我看过许多教程, 几乎复制并粘贴代码, 但我每次都会收到一个错误, “ 使用未申报的身份识别符创建 DentaryAtPath ” 。 这是我的代码 :

NSFileManager *filemgr;
NSArray *dirPaths;
NSString *docsDir;
NSString *newDir;

filemgr =[NSFileManager defaultManager];

dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, 
    NSUserDomainMask, YES);

docsDir = [dirPaths objectAtIndex:0];
newDir = [docsDir stringByAppendingPathComponent:@"pdf"];

if ([createDirectoryAtPath:newDir withIntermediateDirectories:YES attributes:nil error: NULL] == NO)
{
        // Failed to create directory
}
[filemgr release];

任何帮助都将不胜感激。

编辑:我应该提一下,我在.m 文件里有这个代码, 在... (省略)view did Load(省略)

最佳回答

您必须调用文件管理器创建 DientyAtPath:

if ([filemgr createDirectoryAtPath:newDir withIntermediateDirectories:YES attributes:nil error: NULL] == NO)
问题回答

您忘了包含您要发送信件的对象。 正如 Joern 所说, 您需要发送创建的 DentaryAtPath: 与中间日志: 将信件归属于 NSFileManager 实例, filemgr 。





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