How to give context menu item for .zip files only?

问题

I am Developing the zip extractor app in cocoa for which i'm using findersync to show context menu item. But, the problem is item is showing for every file i want to show only for .zip files so how do i do that .

Any Suggestion.

Thanks in Advance!

回答1:

Try this

NSURL *selectedURL = FIFinderSyncController.defaultController.selectedItemURLs[0];
NSURL *fileURL = selectedURL.filePathURL;
if([fileURL.pathExtension isEqualToString:@"zip"]) {
  NSMenu *menu = [[NSMenu alloc] initWithTitle:@""];
  NSMenuItem *item = [menu addItemWithTitle:@"Hello" action:@selector(itemTarget:) keyEquivalent:@""];
  item.target = self;        
  return menu;
}

回答2:

Consider adding a service instead. That will allow you to add your item for any file not just those in monitored folders. The plist entries for a service allow you to directly specify what file types are acceptable, i.e. Restrict the service to ZIP files

来源：https://stackoverflow.com/questions/51628512/how-to-give-context-menu-item-for-zip-files-only