ios 给label添加复制动作

BYXCMenuItem.h

@interface BYXCMenuItem : UIMenuItem

//@property (nonatomic, strong) NSIndexPath *indexPath;
@property (nonatomic, strong) id attachObj;

@end

BYXCMenuItem.m

#import "BYXCMenuItem.h"

@implementation BYXCMenuItem

@end

FNAgendaDetailTitleTableViewCell.h

#import "FNAgendaDetailTitleTableViewCell.h"
#import <Masonry.h>
#import "BYXCMenuItem.h"

@interface FNAgendaDetailTitleTableViewCell ()

@property (nonatomic, assign) CGFloat cellheight;
@property (nonatomic, strong) UILabel *titleLabel;

@end

@implementation FNAgendaDetailTitleTableViewCell

//初始化
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
        self.contentView.backgroundColor = [UIColor whiteColor];
        self.selectionStyle = UITableViewCellSelectionStyleNone;

        _titleLabel = [[UILabel alloc] init];
        [self.contentView addSubview:_titleLabel];
        _titleLabel.tintColor = UIColorFromRGB(0x111111);
        _titleLabel.font = [UIFont systemFontOfSize:16];
        _titleLabel.numberOfLines = 0;
        _titleLabel.userInteractionEnabled = YES;
        [self addLongPressRecognizer];
        
        [self.titleLabel mas_makeConstraints:^(MASConstraintMaker *make) {
            make.left.equalTo(self.contentView.mas_left).offset(13);
            make.centerY.equalTo(self.contentView.mas_centerY);
        }];
        
    }
    return self;
}
//设置数据刷新布局
- (void)setAgendTitle:(NSString *)agendTitle
{
    _agendTitle = agendTitle;
    _titleLabel.text = agendTitle;
    CGSize size = [_titleLabel sizeThatFits:CGSizeMake(UIScreenWidth-26, CGFLOAT_MAX)];
    _titleLabel.frame = CGRectMake(13, 17, UIScreenWidth-26, size.height);
    
}
//返回cell高度
+ (CGFloat)cellHeightWithMsg:(NSString *)msg
{
    UILabel *label = [[UILabel alloc] init];
    label.text = msg;
    label.font = [UIFont systemFontOfSize:16];
    label.numberOfLines = 0;
    CGSize size = [label sizeThatFits:CGSizeMake(UIScreenWidth-26, CGFLOAT_MAX)];
    return size.height+34;
}

- (void)dealloc {
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

//重要
- (BOOL)canBecomeFirstResponder {
    return YES;
}
- (BOOL)canPerformAction:(SEL)action
              withSender:(id)sender
{
    return (action == @selector(copyText:));
}

- (void)addLongPressRecognizer {
    // 文字内容添加长按事件
    UILongPressGestureRecognizer *contentLabelLongPressedRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPressGesture:)];
    [_titleLabel addGestureRecognizer:contentLabelLongPressedRecognizer];
}

- (void)handleLongPressGesture:(UIGestureRecognizer *)recognizer  {
    if (recognizer.state == UIGestureRecognizerStateBegan) {
        [self becomeFirstResponder];
        // 颜色加深，表示选中
        [_titleLabel setBackgroundColor:[FNColorUtil globalSeparatorLineColor]];
        UIMenuController *menuController = [UIMenuController sharedMenuController];
        menuController.menuItems = [self textMenuItems];
        [menuController setTargetRect:recognizer.view.frame inView:recognizer.view.superview];
        [menuController setMenuVisible:YES animated:YES];
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(hideMenuNotification:) name:UIMenuControllerWillHideMenuNotification object:nil];
    }
}

- (void)hideMenuNotification:(id)sender {
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIMenuControllerWillHideMenuNotification object:nil];
    [_titleLabel setBackgroundColor:[UIColor clearColor]];
}

- (NSArray *)textMenuItems {
    NSMutableArray *items = [NSMutableArray array];
    NSString *text = _titleLabel.text;
    [self addMenuItemWithTitle:@"复制" action:@selector(copyText:) attachObj:text toItems:items];
    return items;
}

- (void)copyText:(UIMenuController *)sender {
    NSArray *menuItems = sender.menuItems;
    for (NSInteger i = 0; i < menuItems.count; i++) {
        BYXCMenuItem *item = menuItems[i];
        if ([item.attachObj isKindOfClass:[NSString class]]) {
            if (item.action == @selector(copyText:)) {
                [[UIPasteboard generalPasteboard] setString:item.attachObj];
                break;
            }
        }
    }
}

- (void)addMenuItemWithTitle:(NSString *)title
                      action:(SEL)action
                   attachObj:(id)attachObj
                     toItems:(NSMutableArray *)items {
    BYXCMenuItem *item = [[BYXCMenuItem alloc] initWithTitle:NSLocalizedString(title, nil) action:action];
    item.attachObj = attachObj;
    [items addObject:item];
}@end