没有使用 NSFileManager 移动文件

Question

我正在尝试使用 NSFileManager 将文件从 Documents/Inbox 文件夹移动到 Documents 文件夹。我使用断点来找出我的代码没有工作的地方，一切似乎都运行良好，直到它到达实际移动文件的部分。找到了目录并在调试器中记录了文件，但它不会移动。这是我的整个 viewDidLoad 方法（[super viewDidLoad]; 中什么都没有）：

//Turn every file inside the directory into an array
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *appFolderPath = [path objectAtIndex:0];
NSString *inboxAppFolderPath = [appFolderPath stringByAppendingString:@"/Inbox"]; //changes the directory address to make it for the inbox

//NSPredicates to filter out files I don't want in my NSArray
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"not SELF beginswith[c] '.DS_Store'"];
NSPredicate *inboxPredicate = [NSPredicate predicateWithFormat:@"not SELF beginswith[c] 'Inbox'"];
recipes = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:appFolderPath error:nil];
recipes = [recipes filteredArrayUsingPredicate:predicate];
recipes = [recipes filteredArrayUsingPredicate:inboxPredicate];




//get to inbox directory
NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

NSArray *inboxContents = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:[NSString stringWithFormat:inboxAppFolderPath,documentsDirectory] error:nil];

//move all the files over
for (int i = 0; i != [inboxContents count]; i++)
{
    NSString *oldPath = [NSString stringWithFormat:inboxAppFolderPath, documentsDirectory, [inboxContents objectAtIndex:i]];
    NSString *newPath = [NSString stringWithFormat:appFolderPath, documentsDirectory, [inboxContents objectAtIndex:i]];
    [[NSFileManager defaultManager] moveItemAtPath:oldPath toPath:newPath error:nil];
}

Answer 1

在 Documents 中创建子文件夹可能会出现问题。

尝试以这种方式创建inboxAppFolder。

NSString *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];

NSString *inboxAppFolderPath = [path stringByAppendingPathComponent:@"Inbox"];  // subDirectory

if (![[NSFileManager defaultManager] fileExistsAtPath: inboxAppFolderPath])
   [[NSFileManager defaultManager] createDirectoryAtPath: inboxAppFolderPath withIntermediateDirectories:NO attributes:nil error:nil];

//Rest of your code

希望对您有所帮助。
谢谢。