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iOS中UIMenuController的使用

时间:2015-11-20 21:48:19      阅读:316      评论:0      收藏:0      [点我收藏+]

不知你有没有发现,在你的微信朋友中,长按一段文字(正文或者评论),会弹出这样子的玩意:

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要想在你的view或者viewController中实现长按弹出菜单栏你必须要调用becomeFirstResponder方法,其次要实现canBecomeFirstResponder方法,并返回YES.

#import "ViewController.h"

 

@interface ViewController ()

 

@property(nonatomic,strong)UILabel *label;

@end

 

@implementation ViewController

 

- (void)viewDidLoad {

    [super viewDidLoad];

    

    _label = [[UILabel alloc]initWithFrame:CGRectMake(60, 100, 200, 50)];

    _label.text = @"我是一个label";

    _label.textAlignment = NSTextAlignmentCenter;

    _label.textColor = [UIColor blackColor];

    [self.view addSubview:_label];

    

    self.view.backgroundColor = [UIColor groupTableViewBackgroundColor];

    //

    _label.userInteractionEnabled = YES;

    //添加长按手势

    [_label addGestureRecognizer:[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)]];

}

 

-(void)longPress:(UILongPressGestureRecognizer *)sender{

 

    if (sender.state == UIGestureRecognizerStateBegan) {

        [self.view becomeFirstResponder];

        _label.backgroundColor = [UIColor lightGrayColor];

        UIMenuController *menu = [UIMenuController sharedMenuController];

        //复制

        UIMenuItem *copyItem = [[UIMenuItem alloc] initWithTitle:@"复制" action:@selector(copyItemClicked:)];

        

        //收藏

        UIMenuItem *collectItem = [[UIMenuItem alloc] initWithTitle:@"收藏" action:@selector(collectItemClicked:)];

        

        //举报

        UIMenuItem *reportItem = [[UIMenuItem alloc] initWithTitle:@"举报" action:@selector(reportItemClicked:)];

        

        menu.menuItems = @[copyItem,collectItem,reportItem];

        

        [menu setMenuVisible:YES animated:YES];

        

        [menu setTargetRect:_label.frame inView:self.view];

    }

    if (sender.state==UIGestureRecognizerStateEnded) {

        _label.backgroundColor = [UIColor clearColor];

    }

}

 

- (void)copyItemClicked:(UIMenuItem *)item

{

    NSLog(@"复制");

}

 

- (void)collectItemClicked:(UIMenuItem *)item

{

    NSLog(@"收藏");

}

 

- (void)reportItemClicked:(UIMenuItem *)item

{

    NSLog(@"举报");

}

 

- (BOOL)canBecomeFirstResponder

{

    return YES;

}

 

 

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

 

@end

iOS中UIMenuController的使用

原文:http://www.cnblogs.com/linxiu-0925/p/4982232.html

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