无法将项目移动到垃圾箱

Question

我正试图将下载中的项目移动到我的垃圾桶文件夹中，而不是先删除它们。我在下面的实现中缺少的是，文件没有移动。

---

规格：

 NSString *trashpath=[NSHomeDirectory() stringByAppendingPathComponent:@".Trash"];
 NSString *downloadpath=[NSHomeDirectory() stringByAppendingPathComponent:@"Downloads"];

---

- (void) moveToTrash{
    NSError * error = nil;
    NSArray * list =  [_filemanager contentsOfDirectoryAtPath:_downloadpath error:&error];

    //Move items to the trash
    for(id obj in list){
        NSString *sourcepath = [_downloadpath stringByAppendingPathComponent:obj];
        NSString *destpath= [_trashpath stringByAppendingPathComponent:obj];
        if([_filemanager moveItemAtPath:sourcepath toPath:destpath error:&error] == YES)
            NSLog(@"Moved to trash :%@ ",destpath);
        else
            NSLog(@"Unable to move %@ ",sourcepath);
    }
}

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我尝试使用BergQuester 建议的以下代码

   if([[NSWorkspace sharedWorkspace] performFileOperation:NSWorkspaceRecycleOperation source:_downloadpath
        destination:@"" files:list tag:nil] == YES)
        NSLog(@"Moved to Trash");
    else
        NSLog(@"Unable to move :%@",[error localizedFailureReason]);

我的输出中出现无法移动：（null）。

文件确实在那里，所以我不确定问题还在哪里。

Answer 1

您可以通过在else:中记录错误来找出问题所在

NSLog(@"Unable to move %@ %@", sourcepath, [error localizedDescription]);

此外，除非遇到错误时中止循环，否则应将error重置为nil。

此外，您可能应该使用NSWorkspace和performFileOperation:NSWorkspaceRecycleOperation，而不是单独移动每个文件：

[[NSWorkspace sharedWorkspace] performFileOperation:NSWorkspaceRecycleOperation
                                             source:_downloadpath
                                        destination:@""
                                              files:list
                                                tag:nil];