我们发现UILabel不在为我们提供长按弹出复制等操作了, 我们来继承UILabel自己写一个带复制功能的UILabel。

代码：

#import "CopyLabel.h"@implementation CopyLabel- (instancetype)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {        [self pressAction];    }    return self;} // 初始化设置- (void)pressAction {
        self.userInteractionEnabled = YES;    UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressAction:)];    longPress.minimumPressDuration = 0.25;    [self addGestureRecognizer:longPress];}// 使label能够成为响应事件- (BOOL)canBecomeFirstResponder {    return YES;}// 自定义方法时才显示对就选项菜单，即屏蔽系统选项菜单- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
    if (action == @selector(customCopy:)){        return YES;    }    return NO;}- (void)customCopy:(id)sender {
        UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];    pasteboard.string = self.text;} - (void)longPressAction:(UIGestureRecognizer *)recognizer {
    if (recognizer.state == UIGestureRecognizerStateBegan) {        [self becomeFirstResponder];        UIMenuItem *copyItem = [[UIMenuItem alloc] initWithTitle:@"拷贝" action:@selector(customCopy:)];        UIMenuController *menuController = [UIMenuController sharedMenuController];        menuController.menuItems = [NSArray arrayWithObjects:copyItem, nil];        [menuController setTargetRect:self.frame inView:self.superview];        [menuController setMenuVisible:YES animated:YES];    }}@end

使用：

- (void)viewDidLoad {   [super viewDidLoad];    CopyLabel *copy = [[CopyLabel alloc] initWithFrame:CGRectMake(0, 100, [UIScreen mainScreen].bounds.size.width,50)];   copy.text = @"一个带复制功能的Label";   copy.textAlignment = NSTextAlignmentCenter;   copy.backgroundColor = [UIColor yellowColor];   copy.textColor = [UIColor redColor];   copy.font = [UIFont boldSystemFontOfSize:16];   [self.view addSubview:copy];}