How to delete the contents of the Documents directory (and not the Documents directory itself)?

问题

I want to delete all the files and directories contained in the Documents directory.

I believe using [fileManager removeItemAtPath:documentsDirectoryPath error:nil] method would remove the documents directory as well.

Is there any method that lets you delete the contents of a directory only and leaving the empty directory there?

回答1:

Try this:

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];
}

回答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)
}

回答3:

I think that working with URLs instead of String makes it simpler:

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)
    }
}

来源：https://stackoverflow.com/questions/4749269/how-to-delete-the-contents-of-the-documents-directory-and-not-the-documents-dir