目前iOS上自带支持拷贝黏贴的控件主要是：UITextField,UITextView,UIWebView
然而在很多情况下我们也会遇到需要在某些显示Label中支持长按复制的功能，如果需要做到拷贝这一点，我们需要自定义一个继承UILabel的控件，具体代码如下：
//
// CopyEnableLabel.m
// ReachjunctionProject
//
// Created by Xiao on 2019/6/21.
// Copyright © 2019 Reachjunction. All rights reserved.
//
#import "CopyEnableLabel.h"
@implementation CopyEnableLabel
- (instancetype)initWithFrame:(CGRect)frame{
if (self == [super initWithFrame:frame]) {
[self initializationSetting];
}
return self;
}
//初始化设置，打开用户交互功能，添加长按手势
- (void)initializationSetting{
self.userInteractionEnabled = YES;
UILongPressGestureRecognizer *longGes = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPressAction:)];
longGes.minimumPressDuration = 1;
[self addGestureRecognizer:longGes];
}
//长按弹出拷贝选项
- (void)longPressAction:(UILongPressGestureRecognizer *)longGes{
[self becomeFirstResponder];
UIMenuItem *copyItem = [[UIMenuItem alloc]initWithTitle:@"拷贝" action:@selector(copyText:)];
[[UIMenuController sharedMenuController]setMenuItems:[NSArray arrayWithObjects:copyItem,nil]];
[[UIMenuController sharedMenuController]setTargetRect:self.frame inView:self.superview];
[[UIMenuController sharedMenuController]setMenuVisible:YES animated:YES];
}
// 开启label响应事件的功能
- (BOOL)canBecomeFirstResponder{
return YES;
}
//控制响应事件的方法
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender{
return action == @selector(copyText:);
}
//修改粘贴板内容
- (void)copyText:(id)sender{
[UIPasteboard generalPasteboard].string = self.text;
}
@end
最后出来的效果：
WeChate1244fa0ff852164393ffec1441d7445.png
