使用文件管理器创建文件副本不适用于 Mac 应用程序

发布于 2024-11-02 16:50:11 字数 665 浏览 1 评论 0原文

我的文档文件夹中的一个文件夹中有一个文件。我想在其他文件夹中使用其他名称创建该文件的副本。我使用的代码是

NSFileManager *fileManager = [[NSFileManager alloc] init];
NSString * filePath = [NSHomeDirectory() stringByAppendingPathComponent:
    [NSString stringWithFormat:@"Documents/test/test1/%@%@%@",str,currentaudioTobPlayed,@".mp3"]];
NSString * filePath2 = [NSHomeDirectory() stringByAppendingPathComponent:
    [NSString stringWithFormat:@"Documents/test/test1/"]];

NSLog(@"filePat %@",filePath);
NSLog(@"filePath2 %@",filePath2);
NSLog(@"filePath2 %@",fileManager);

[fileManager copyItemAtPath:filePath toPath:filePath2 error:NULL];
[fileManager release];

但是此代码不起作用。请帮忙！

原文

I have a file in one of the folder in my documents folder .I want to create a copy of that file in some other folder with some other name.The code I am using is

NSFileManager *fileManager = [[NSFileManager alloc] init];
NSString * filePath = [NSHomeDirectory() stringByAppendingPathComponent:
    [NSString stringWithFormat:@"Documents/test/test1/%@%@%@",str,currentaudioTobPlayed,@".mp3"]];
NSString * filePath2 = [NSHomeDirectory() stringByAppendingPathComponent:
    [NSString stringWithFormat:@"Documents/test/test1/"]];

NSLog(@"filePat %@",filePath);
NSLog(@"filePath2 %@",filePath2);
NSLog(@"filePath2 %@",fileManager);

[fileManager copyItemAtPath:filePath toPath:filePath2 error:NULL];
[fileManager release];

But this code is not working.Please help!

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看透却不说透 2024-11-09 16:50:11

在：

NSString * filePath2 = [NSHomeDirectory() stringByAppendingPathComponent:
    [NSString stringWithFormat:@"Documents/test/test1/"]];

您没有指定目标文件名：~/Documents/test/test1 是一个目录。

你可以这样做：

NSString *sourceName = [NSString stringWithFormat:@"%@%@.mp3",
    str, currentaudioTobPlayed];

// Choose the destination file name
NSString *destName = [NSString stringWithFormat:@"Copy of %@", sourceName];

NSString * filePath = [NSHomeDirectory() stringByAppendingPathComponent:
[NSString stringWithFormat:@"Documents/test/test1/%@", sourceName]];

NSString * filePath2 = [NSHomeDirectory() stringByAppendingPathComponent:
    [NSString stringWithFormat:@"Documents/test/test1/%@", destName]];
// Replace Documents/test/test1 with another directory under home,
// or replace the whole string with an entirely different directory

In:

NSString * filePath2 = [NSHomeDirectory() stringByAppendingPathComponent:
    [NSString stringWithFormat:@"Documents/test/test1/"]];

you’re not specifying the destination file name: ~/Documents/test/test1 is a directory.

You could do this instead:

NSString *sourceName = [NSString stringWithFormat:@"%@%@.mp3",
    str, currentaudioTobPlayed];

// Choose the destination file name
NSString *destName = [NSString stringWithFormat:@"Copy of %@", sourceName];

NSString * filePath = [NSHomeDirectory() stringByAppendingPathComponent:
[NSString stringWithFormat:@"Documents/test/test1/%@", sourceName]];

NSString * filePath2 = [NSHomeDirectory() stringByAppendingPathComponent:
    [NSString stringWithFormat:@"Documents/test/test1/%@", destName]];
// Replace Documents/test/test1 with another directory under home,
// or replace the whole string with an entirely different directory

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