长按label实现复制或者粘贴功能

先看效果:

3.gif

在看代码:

//
//  LYCopyLabel.m
//  Null
//
//  Created by liyang on 17/8/16.
//  Copyright © 2017年 liyang. All rights reserved.
//

#import "LYCopyLabel.h"

@implementation LYCopyLabel

//指定LYCopyLabel可以成为第一响应者,配合UIMenuController使用
- (BOOL)canBecomeFirstResponder {
    return YES;
}

//指定该LYCopyLabel可以响应的方法,系统提供了好多方法,我们只用粘贴复制
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
    if (action == @selector(copyS:)) {
        return YES;
    }
    if (action == @selector(pasteS:)) {
        return YES;
    }
    return NO;
}

- (instancetype)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
        [self attachTapHandler];
    }
    return self;
}

- (void)awakeFromNib {
    [super awakeFromNib];
    [self attachTapHandler];
}

-(void)attachTapHandler {
    self.userInteractionEnabled = YES;
    UILongPressGestureRecognizer *touch = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)];
    [self addGestureRecognizer:touch];
}

-(void)handleTap:(UIGestureRecognizer*)recognizer {
    
    if (recognizer.state == UIGestureRecognizerStateBegan) {
        
        [self becomeFirstResponder];
        
        UIMenuItem *copyLink = [[UIMenuItem alloc] initWithTitle:@"复制"
                                                          action:@selector(copyS:)];
        
        UIMenuItem *pasteLink = [[UIMenuItem alloc] initWithTitle:@"粘贴"
                                                          action:@selector(pasteS:)];
        
        UIMenuController *men = [UIMenuController sharedMenuController];
        
        men.menuItems = @[copyLink,pasteLink];
        
        men.arrowDirection = UIMenuControllerArrowDown;
        
        [men setTargetRect:self.frame inView:self.superview];
        
        [men setMenuVisible:YES animated:YES];
    }
}

#pragma mark - 自定义事件
- (void)copyS:(id)sender {
    UIPasteboard *pboard = [UIPasteboard generalPasteboard];
    pboard.string = self.text;
}

- (void)pasteS:(id)sender{
    UIPasteboard *pboard = [UIPasteboard generalPasteboard];
    self.text = pboard.string;
}

@end

使用的时候用LYCopyLabel技能实现复制功能和粘贴功能