关于UIMenuController的一个小示例

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//

//  PLViewController.m

//  MenuView

//

//  Created by apple－zql on 13-4-18.

//  Copyright (c) 2013年 apple－zql. All rights reserved.

//

#import "PLViewController.h"

@interface PLViewController ()

@end

@implementation PLViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

{

    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

    if (self) {

        // Custom initialization

    }

    return self;

}

- (void)viewDidLoad

{

    [super viewDidLoad];

// Do any additional setup after loading the view.

    UIButton *myBtn = [[UIButton alloc] init];

    myBtn.frame = CGRectMake(100, 100, 100, 20);

    [myBtn setTitle:@"你好" forState:UIControlStateNormal];

    myBtn.backgroundColor = [UIColor blackColor];

    [myBtn addTarget:self action:@selector(showMenu:) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:myBtn];

    [myBtn release];

}

- (void) showMenu:(id)sender

{

    [self becomeFirstResponder];

    UIMenuController *menu = [UIMenuController sharedMenuController];

    UIMenuItem *item1 = [[UIMenuItem alloc] initWithTitle:@"1111" action:@selector(click:)];

    UIMenuItem *item2 = [[UIMenuItem alloc] initWithTitle:@"2222" action:@selector(click1:)];

    menu.menuItems = [NSArray arrayWithObjects:item1,item2, nil];

    [menu setTargetRect:CGRectMake(10, 10, 30, 30) inView:self.view];

    [menu setMenuVisible:YES animated:YES];

}

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender

{

    if (action == @selector(click:)) {

        return YES;//显示

    }else if(action == @selector(click1:)){

        return YES;

    }

    return NO;//不显示

}

- (void) click1:(id)sender{

    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"1111" message:@"1111" delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];

    [alert show];

}

- (void) click:(id)sender{

    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"2222" message:@"2222" delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];

    [alert show];

}

- (BOOL)canBecomeFirstResponder{

    return YES;

}

- (void)didReceiveMemoryWarning

{

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end