如何删除应用程序上指定目录中的所有文件？

Question

给定目录[[self documentsDirectory] stringByAppendingPathComponent:@"Photos/"]如何删除此文件夹中的所有文件？

(假设文档目录路径正确)

Answer 1

NSFileManager *fm = [NSFileManager defaultManager];
NSString *directory = [[self documentsDirectory] stringByAppendingPathComponent:@"Photos/"];
NSError *error = nil;
for (NSString *file in [fm contentsOfDirectoryAtPath:directory error:&error]) {
    BOOL success = [fm removeItemAtPath:[NSString stringWithFormat:@"%@%@", directory, file] error:&error];
    if (!success || error) {
        // it failed.
    }
}

如果它存在的话,我会把它留给你做一些有用的错误.

Answer 2

如果你想删除文件和目录本身,然后使用它没有for循环

NSFileManager *fm = [NSFileManager defaultManager];
NSString *directory = [[self documentsDirectory] stringByAppendingPathComponent:@"Photos"];
NSError *error = nil;
BOOL success = [fm removeItemAtPath:cacheImageDirectory error:&error];
if (!success || error) {
    // something went wrong
}

Answer 3

同样对于快速爱好者:

let fm = FileManager.default
do {
  let folderPath = "...my/folder/path"
  let paths = try fm.contentsOfDirectory(atPath: folderPath)
  for path in paths
  {
    try fm.removeItem(atPath: "\(folderPath)/\(path)")
  }
} catch {
  print(error.localizedDescription)
}