1.自定義Label的UIMenuController

#import "ZZYMenuLabel.h"

@implementation ZZYMenuLabel
/**
 *  xib創(chuàng)建label時調(diào)用
 */
- (void)awakeFromNib
{
    [self setUp];
}
/**
 *  代碼創(chuàng)建label時調(diào)用
 */
- (instancetype)initWithFrame:(CGRect)frame
{
    if (self = [super initWithFrame:frame]) {
         [self setUp];
    }
    return self;
}

- (void)setUp
{
    self.userInteractionEnabled = YES;
    [self addGestureRecognizer:[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPress)]];
}

- (void)longPress
{
    NSLog(@"%s",__func__);

    //1.設(shè)置label為第一響應(yīng)者
    //通過設(shè)置第一響應(yīng)者UIMenuController可以獲得支持哪些操作的信息,操作怎么處理
    [self becomeFirstResponder];

    //2.設(shè)置UIMenuController
    UIMenuController * menu = [UIMenuController sharedMenuController];

    //當長按label的時候蕴忆，這個方法會不斷調(diào)用，menu就會出現(xiàn)一閃一閃不斷顯示狼荞，需要在此處進行判斷
    if (menu.isMenuVisible)return;
    //自定義 UIMenuController

    UIMenuItem * item1 = [[UIMenuItem alloc]initWithTitle:@"剪切" action:@selector(myCut:)];
    UIMenuItem * item2 = [[UIMenuItem alloc]initWithTitle:@"粘貼" action:@selector(myPaste:)];
    menu.menuItems = @[item1,item2];

    [menu setTargetRect:self.bounds inView:self];
//  [menu setTargetRect:self.frame inView:self.superview];

    [menu setMenuVisible:YES animated:YES];

}
#pragma mark - 對控件權(quán)限進行設(shè)置
/**
 *  設(shè)置label可以成為第一響應(yīng)者
 *
 *  @注意：不是每個控件都有資格成為第一響應(yīng)者
 */
- (BOOL)canBecomeFirstResponder
{
    return YES;
}
/**
 *  設(shè)置label能夠執(zhí)行那些具體操作
 *
 *  @param action 具體操作
 *
 *  @return YES:支持該操作
 */
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender
{
//    NSLog(@"%@",NSStringFromSelector(action));

    if(action == @selector(cut:) || action == @selector(copy:) || action == @selector(myCut:)|| action == @selector(myPaste:)) return YES;
    return NO;
}

#pragma mark - 方法的實現(xiàn)
//- (void)cut:(id)sender
//{
//    
//    NSLog(@"%@",sender);
//    
//}

- (void)myCut:(UIMenuController *) menu
{
    NSLog(@"%s---%@",__func__,menu);
    //復制文字到剪切板
    [self copy:menu];
    //清空文字
    self.text = nil;

}

- (void)cut:(UIMenuController *)menu
{
    //復制文字到剪切板
    [self copy:menu];
    //清空文字
    self.text = nil;

}

- (void)copy:(UIMenuController *)menu
{
    //當沒有文字的時候調(diào)用這個方法會崩潰
     if (!self.text) return;
    //復制文字到剪切板
    UIPasteboard * paste = [UIPasteboard generalPasteboard];
    paste.string = self.text;

}

- (void)myPaste:(UIMenuController *)menu
{
    //將剪切板文字賦值給label
    UIPasteboard * paste = [UIPasteboard generalPasteboard];
    self.text = paste.string;
}
@end

2.UITableViewCell的使用

#import "ZZYTableViewCell.h"

@implementation ZZYTableViewCell

- (BOOL)canBecomeFirstResponder
{
    return YES;
}

@end

#import "ZZYTableViewController.h"
#import "ZZYTableViewCell.h"

@interface ZZYTableViewController ()
@property (nonatomic, weak) ZZYTableViewCell * selectCell;
@end

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    //當menucontroller顯示派哲，點擊不同的cell時為什么會顯示霸株。
//    menuController的顯示依賴于第一響應(yīng)者，當點擊另外的cell時去件，當前cell取消第一響應(yīng)者狀態(tài)坡椒，menucontroller自動消失
    UIMenuController * menu = [UIMenuController sharedMenuController];
    NSLog(@"%d",menu.isMenuVisible);
    //防止點擊多次創(chuàng)建
    if (menu.isMenuVisible)
    {
        [menu setMenuVisible:NO animated:YES];
    }
    else
    {

    ZZYTableViewCell * cell = [tableView cellForRowAtIndexPath:indexPath];
        self.selectCell = cell;

    [cell becomeFirstResponder];

    UIMenuItem * item0 = [[UIMenuItem alloc]initWithTitle:@"分享" action:@selector(share:)];
    UIMenuItem * item1 = [[UIMenuItem alloc]initWithTitle:@"評論" action:@selector(comment:)];
    UIMenuItem * item2 = [[UIMenuItem alloc]initWithTitle:@"點贊" action:@selector(praise:)];
    menu.menuItems = @[item0,item1,item2];

    [menu setTargetRect:CGRectMake(0, cell.frame.size.height * 0.5, cell.frame.size.width, cell.frame.size.height) inView:cell];

    [menu setMenuVisible:YES animated:YES];
    }
}


- (void)share:(UIMenuController *)menu
{
    NSLog(@"%@",self.selectCell.textLabel.text);
}

- (void)comment:(UIMenuController *)menu
{

}

- (void)praise:(UIMenuController *)menu
{

}

//防止拖動tableView時產(chǎn)生的BUG
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
    UIMenuController * menu = [UIMenuController sharedMenuController];
    [menu setMenuVisible:NO animated:YES];
}

3.設(shè)置位置

/**
 *  設(shè)置menu顯示的位置信息
 *
 *  @param targetRect menu需要顯示的矩形區(qū)域
 *  @param targetView targetRect會以targetView的左上角為坐標原點進行顯示
 */
- (void)setTargetRect:(CGRect)targetRect inView:(UIView *)targetView;