一、在iOS中下面三个控件，自身就有复制-粘贴的功能：
1、UITextView
2、UITextField
3、UIWebView
在iOS8 之后, 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
二、废话少说，直接撸代码
//
// CopyLabel.m
// Block学习二次学习01
//
// Created by XianCheng Wang on 2018/8/4.
// Copyright © 2018年 XianCheng Wang. All rights reserved.
//
#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;
}
// 父类视图
-(void)addSuperView{
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(removeCopyLabel)];
tap.numberOfTapsRequired = 1;
[self.superview addGestureRecognizer:tap];
self.alpha = kAlpha;
}
-(void)removeCopyLabel{
self.alpha = 1.0;
}
- (void)customCopy:(id)sender {
[self removeCopyLabel];
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
pasteboard.string = self.text;
}
- (void)longPressAction:(UIGestureRecognizer *)recognizer {
// 父类视图
[self addSuperView];
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
三、废话少说，直接看效果
- (void)viewDidLoad {
[super viewDidLoad];
self.navigationItem.title = @"CopyLabel";
CopyLabel *copy = [[CopyLabel alloc] initWithFrame:CGRectMake(50,44, [UIScreen mainScreen].bounds.size.width - 100,35)];
copy.text = @"清明时节雨纷纷，路上行人欲断魂。";
copy.textColor = [UIColor yellowColor];
copy.backgroundColor = [UIColor darkGrayColor];
copy.textAlignment = NSTextAlignmentCenter;
copy.font = [UIFont boldSystemFontOfSize:14];
[self.view addSubview:copy];
}
copyLabel.gif
四、github地址：https://github.com/gitwangxiancheng/CopyLabel.git
五、是不是很心动，赶快试试吧❤️
