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我正在使用a UIMenuItem在UICollectionView单元长按中执行自定义操作.这与iOS 6完美配合,但现在我将我的应用程序转换为iOS 7和Xcode 5,但它无法正常工作.自定义项目未显示.

UIMenuItem *menuItem = [[UIMenuItem alloc] initWithTitle:@"Unfavorite"
                                                  action:@selector(unFavorite:)];
[[UIMenuController sharedMenuController] setMenuItems:[NSArray arrayWithObject:menuItem]];
[UIMenuController sharedMenuController].menuVisible = YES;

- (BOOL)collectionView:(UICollectionView *)collectionView canPerformAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender;
{
    //do not show default itens like copy, paste....
    [self becomeFirstResponder];
    return NO;
}


- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
// The selector(s) should match your UIMenuItem selector
    if (action == @selector(unFavorite:)) {
         return YES;
    }
    return NO;
}

- (void)collectionView:(UICollectionView *)collectionView
     performAction:(SEL)action
forItemAtIndexPath:(NSIndexPath *)indexPath
        withSender:(id)sender {

}

 - (BOOL)collectionView:(UICollectionView *)collectionView
 shouldShowMenuForItemAtIndexPath:(NSIndexPath …

我想用对象和键创建一个NSDictionary,如下例所示

NSArray *keys = [NSArray arrayWithObjects:@"key1", @"key2", nil];
NSArray *objects = [NSArray arrayWithObjects:@"value1", @"value2", nil];
NSDictionary *dictionary = [NSDictionary dictionaryWithObjects:objects 
                                                   forKeys:keys];

但我需要添加多个寄存器,例如:

code=1
description=John

code=2
description=Paul

code=3
description=Peter
.
.
.

exactly what I need, an NSDictionary like a json structure:
{
"people": [
{ "code":"1" , "name":"John" }, 
{ "code":"2" , "name":"Smith" }, 
{ "code":"3" , "name":"Jones" }
]
}