#import <UIKit/UIKit.h>@interface UICopyLabel : UILabel@end

#import "UICopyLabel.h"@implementation UICopyLabel- (void)dealloc{    [[NSNotificationCenter defaultCenter] removeObserver:self];    [super dealloc];}- (id)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self) {          [self attachTapHandlerAndAddObserver];    }    return self;}-(id)initWithCoder:(NSCoder *)aDecoder{    self = [super initWithCoder:aDecoder];    if (self) {         [self attachTapHandlerAndAddObserver];    }    return self;}-(void)attachTapHandlerAndAddObserver{    self.userInteractionEnabled = YES;  //用户交互的总开关    UILongPressGestureRecognizer *touch = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)];    [self addGestureRecognizer:touch];    self.exclusiveTouch = YES;    [touch release];        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(cancelLabelBackgroundColor) name:UIMenuControllerDidHideMenuNotification object:nil];}-(BOOL)canBecomeFirstResponder{    return YES;}//还需要针对复制的操作覆盖两个方法：// 可以响应的方法-(BOOL)canPerformAction:(SEL)action withSender:(id)sender{    self.backgroundColor = [UIColor clearColor];    return (action == @selector(copy:));}//针对于响应方法的实现-(void)copy:(id)sender{    UIPasteboard *pboard = [UIPasteboard generalPasteboard];    pboard.string = self.text;}-(void)handleTap:(UIGestureRecognizer*) recognizer{    [self becomeFirstResponder];    UIMenuItem *copyLink = [[[UIMenuItem alloc] initWithTitle:@"复制全部内容"                                                      action:@selector(copy:)]autorelease];    [[UIMenuController sharedMenuController] setMenuItems:[NSArray arrayWithObjects:copyLink, nil]];    [[UIMenuController sharedMenuController] setTargetRect:self.frame inView:self.superview];    [[UIMenuController sharedMenuController] setMenuVisible:YES animated: YES];    self.backgroundColor = [UIColor lightGrayColor];}-(void)cancelLabelBackgroundColor{   self.backgroundColor = [UIColor clearColor];}@end