iphone - 如何删除 Documents 目录的内容（而不是 Documents 目录本身）？

Question

我想删除 Documents 目录中包含的所有文件和目录。

我相信使用[fileManager removeItemAtPath:documentsDirectoryPath error:nil] 方法也会删除文档目录。

有什么方法可以让您只删除目录的内容并将空目录留在那里？

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];
}

Answer 2

斯威夫特 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)
}

Answer 3

我认为使用 URL 而不是 String 会更简单：

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)
    }
}

Answer 4

其他解决方案仅删除表面级别，这将迭代地撕裂到子目录并清除它们。

此外，一些答案仅使用removeItem:文件本身的本地路径，而不是操作系统正确删除所需的完整路径。

---

打电话[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];
            }
        }
    }
}