如何删除“文档”目录下的文件（而不是删除“文档”目录本身）？

Question

我想要删除文档目录中包含的所有文件和文件夹。

我认为使用[fileManager removeItemAtPath:documentsDirectoryPath error:nil]方法也会删除文档目录本身。

是否有一种方法可以仅删除目录内容并保留空目录呢？

- NSExplorer

Answer 1

试试这个：

NSString *folderPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; 
NSError *error = nil;
for (NSString *file in [[NSFileManager defaultManager] contentsOfDirectoryAtPath:folderPath error:&error]) {
    [[NSFileManager defaultManager] removeItemAtPath:[folderPath stringByAppendingPathComponent:file] error:&error];
}

- cmlloyd

Answer 2

Swift 3.x

let path = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
guard let items = try? FileManager.default.contentsOfDirectory(atPath: path) else { return }

for item in items {
    // This can be made better by using pathComponent
    let completePath = path.appending("/").appending(item)
    try? FileManager.default.removeItem(atPath: completePath)
}

- footyapps27

---

感谢提供代码。这些代码也适用于Swift 5。 - said altintop

Answer 3

我认为使用URL而不是字符串更简单：

private func clearDocumentsDirectory() {
    let fileManager = FileManager.default
    guard let documentsDirectory = fileManager.urls(for: .documentDirectory, in: .userDomainMask).first else { return }

    let items = try? fileManager.contentsOfDirectory(at: documentsDirectory, includingPropertiesForKeys: nil)
    items?.forEach { item in
        try? fileManager.removeItem(at: item)
    }
}

- Jakub Sowa

Answer 4

其他解决方案只会删除表面层次，而这个方案将迭代地进入子目录并清除它们。

另外，一些答案正在使用removeItem:与仅为文件本身的本地路径，而不是操作系统需要的完整路径来正确删除。

---

只需调用[self purgeDocuments];

+(void)purgeDocuments __deprecated_msg("For debug purposes only") {
    NSString *documentDirectoryPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
    [self purgeDirectory:documentDirectoryPath];
}

+(void)purgeDirectory:(NSString *)directoryPath __deprecated_msg("For debug purposes only") {
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSError *error;
    NSArray *directoryContent = [fileManager contentsOfDirectoryAtPath:directoryPath error:&error];
    for (NSString *itemPath in directoryContent) {
        NSString *itemFullPath = [NSString stringWithFormat:@"%@/%@", directoryPath, itemPath];
        BOOL isDir;
        if ([fileManager fileExistsAtPath:itemFullPath isDirectory:&isDir]) {
            if (isDir) {
                [self purgeDirectory:itemFullPath];//subdirectory
            } else {
                [fileManager removeItemAtPath:itemFullPath error:&error];
            }
        }
    }
}

- Albert Renshaw