8 9 #import "YYMenuViewController.h"
10
11 @interface YYMenuViewController ()
12 @property(nonatomic,strong)NSArray *menus;
13 @end
14
15 @implementation YYMenuViewController
16
17 -(NSArray *)menus
18 {
19     if (_menus==nil) {
20         _menus=@[@"列表1",@"列表2",@"列表3",@"列表4"];
21     }
22  return _menus;
23 }
24 - (void)viewDidLoad
25 {
26     [super viewDidLoad];
27 }
28
29 -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
30 {
31     return 1;
32 }
33 -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
34 {
35     return self.menus.count;
36 }
37 -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
38 {
39     static NSString *ID=@"ID";
40     UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:ID];
41     if (cell==nil) {
42         cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:ID];
43     }
44
45     cell.textLabel.text=self.menus[indexPath.row];
46     return cell;
47 }
48
49 @end

 18 9 #import "YYViewController.h"
10 #import "YYMenuViewController.h"
11
12 @interface YYViewController ()
13 @property(nonatomic,strong)UIPopoverController *popover;
14 @end
15
16 @implementation YYViewController
17
18 - (void)viewDidLoad
19 {
20     [super viewDidLoad];
21 }
22
23 -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
24 {
25     //1.新建一个内容控制器
26     YYMenuViewController *menuVc=[[YYMenuViewController alloc]init];
27
28     //2.新建一个popoverController，并设置其内容控制器
29     self.popover=[[UIPopoverController alloc]initWithContentViewController:menuVc];
30
31     //3.设置尺寸
32     self.popover.popoverContentSize=CGSizeMake(300, 200);
33
34     //4.显示
35     [self.popover presentPopoverFromBarButtonItem:self.navigationItem.leftBarButtonItem permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
36 }
37 @end