UIMenuController 注意事项 OC与swift
UIMenuController 是什么?
简单来说 就是我们常看到的 Textfiled textView webView 上面 当你 长按的时候 会有 弹出一长串 复制 粘粘 类似于 qq聊天 对应的详细 你查看的时候 会有复制 转发 那个 view.
好 先来 OC
1. 是 让 添加 UIMenuController 的控件 成为 响应者 *
- (BOOL)canBecomeFirstResponder{
returnYES;
}
2 重点来了 必须实现下面俩方法 这俩方法 一般写在 UIMenuController 创建的类 里面
- (BOOL)canBecomeFirstResponder{
return YES;
}
//不要急 这个方法里面的 俩个selector 是 创建 UIMenuItem 的两个方法 是 确保 这俩个方法 才会触发 能够点击 否则 其他的 都不触发
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender{
if(action ==@selector(copy:) || action ==@selector(paste:) || action ==@selector(cut:)) {
return YES;
}
returnNO;
}
3. UIMenuController 的创建
UIMenuController*menuVc = [UIMenuController sharedMenuController];
if(menuVc.isMenuVisible) {
[menuVc setMenuVisible:NO animated:YES];
}
//self.frame 是你 需要添加 删除 粘贴 UIMenuController 的控件的frame self.superview 其父视图的 frame
[menuVc setTargetRect:self.frame inView:self.superview];
//使 UIMenuController 可见
[menuVc setMenuVisible:YES animated:YES];
//自定义 的 item 就是 自定义 粘粘啊 删除啊 还是 其他的item
UIMenuItem*item1 = [[UIMenuItem alloc] initWithTitle:@"item1"action:@selector(item1Click:)];
UIMenuItem*item2 = [[UIMenuItem alloc] initWithTitle:@"item2"action:@selector(item2Click:)];
//这个就是 把 item 放到 menuVC上
menuVc.menuItems = @[item1,item2];
最后 实现方法 menitems 方法就好了 方法里面 具体做什么 看自己业务
注意 这个是 把 我们的 字符串 复制到 我们的硬件中 在其他地方可以粘粘
UIPasteboard*board = [UIPasteboardgeneral Pasteboard];
board.string ="复制到手机硬件中";
综上 oc的 代码 封装的 label
#import"LXBLabel.h"
@implementationLXBLabel
- (instancetype)initWithFrame:(CGRect)frame{
self= [superinitWithFrame:frame];
if(self) {
[selfsetup]; }returnself;
}
- (void)awakeFromNib{ [selfsetup];
}
- (void)setup{
self.userInteractionEnabled =YES;
[self addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(clickLabel)]];
}
- (void)clickLabel{
[self becomeFirstResponder];
UIMenuController*menuVc =[UIMenuController sharedMenuController];// 控制好menu的显示与隐藏UIMenuController*menuVc = [UIMenuController sharedMenuController];
if(menuVc.isMenuVisible) {
[menuVc setMenuVisible:NO animated:YES];
}
[menuVc setTargetRect:self.frame inView:self.superview];
[menuVc setMenuVisible:YES animated:YES];}
UIMenuItem*item1 = [[UIMenuItem alloc] initWithTitle:@"复制"action:@selector(copy:)];
UIMenuItem*item2 = [[UIMenuItem alloc] initWithTitle:@"粘粘"action:@selector(paste:)];
UIMenuItem*item2 = [[UIMenuItem alloc] initWithTitle:@"剪贴"action:@selector(cut:)];
menuVc.menuItems = @[item1,item2];
- (BOOL)canBecomeFirstResponder{
// 明确该控件可以成为第一响应者 returnYES;
}
// 该控件可以执行哪些动作
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender{
if(action ==@selector(copy:) || action ==@selector(paste:) || action ==@selector(cut:)) {
returnYES;
}
returnNO;
}
- (void)copy:(UIMenuController*)menu{
UIPasteboard*board = [UIPasteboardgeneral Pasteboard];
board.string =self.text;
}
- (void)paste:(UIMenuController*)menu{
UIPasteboard*board = [UIPasteboardgeneral Pasteboard];
self.text = board.string;
}- (void)cut:(UIMenuController*)menu{
[self copy:menu];
self.text =nil;
}
@end
swfit 与 OC 类似 就是写法 不同
```//
// headerView.swift
// MENEDEMO
//
// Created by wwt on 2018/6/6.
// Copyright © 2018年 wwt. All rights reserved.
//
import UIKit
class headerView: UIView {
var label :UILabel?
override init(frame: CGRect) {
super.init(frame: frame)
label = UILabel.init(frame: CGRect.init(x: 5, y: 5, width: frame.width - 10, height: frame.height - 10))
label?.text = "sadasdasdsad"
label?.font = UIFont.systemFont(ofSize: 15)
label?.textColor = UIColor.red
label?.isUserInteractionEnabled = true
let lpgr = UILongPressGestureRecognizer(target: self, action: #selector(handleLongPress))
lpgr.minimumPressDuration = 0.5
label?.addGestureRecognizer(lpgr)
self.becomeFirstResponder()
addSubview(label!)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
/*
// Only override draw() if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
override func draw(_ rect: CGRect) {
// Drawing code
}
*/
public lazy var menuController: UIMenuController = {
return UIMenuController.shared
}()
lazy var copyMenuItem: UIMenuItem = {
return UIMenuItem(title:"复制", action:#selector(copyMenuAction))
}()
lazy var pasteMenuItem: UIMenuItem = {
return UIMenuItem(title:"粘贴", action:#selector(pasteMenuAction))
}()
}
extension headerView {
override var canBecomeFirstResponder: Bool {
return true
}
override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
if [#selector(copyMenuAction), #selector(pasteMenuAction)].contains(action) {
return true
}
return false
}
@objc func handleLongPress (_ recognizer: UILongPressGestureRecognizer){
// if recognizer.state == .began {
self.becomeFirstResponder()
label?.becomeFirstResponder()
menuController.menuItems = [copyMenuItem]
menuController.setTargetRect((label?.frame)!, in: (label?.superview)!)
menuController.setMenuVisible(true, animated: true)
// }
}
class func showAlert(_ t:String? = nil, message:String?,leftButtonTitle:String,rightButtonTitle:String? = nil, leftBtnSureClick:(() -> Void)? = nil, rightCancleBtnClick:(() -> Void)? = nil) {
DispatchQueue.main.async(execute: { () -> Void in
var title = t
if title == nil {
title = "";
}
let alertVC = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.alert);
alertVC.addAction(UIAlertAction(title: leftButtonTitle, style: UIAlertActionStyle.default, handler: { (sure) -> Void in
if leftBtnSureClick != nil {
leftBtnSureClick!();
}
}))
if rightButtonTitle != nil {
alertVC.addAction(UIAlertAction(title: rightButtonTitle, style: UIAlertActionStyle.default, handler: { (cancle) -> Void in
if rightCancleBtnClick != nil {
rightCancleBtnClick!();
}
}))
}
let vc = UIApplication.shared.keyWindow?.rootViewController;
if vc != nil {
}
if ((vc?.presentedViewController) != nil) {
vc?.presentedViewController!.present(alertVC, animated: true, completion: nil);
return;
}
vc?.present(alertVC, animated: true, completion: nil);
})
}
@objc func copyMenuAction() {
headerView.showAlert("提示", message: "复制", leftButtonTitle: "是", rightButtonTitle: "否", leftBtnSureClick: {
}) {
}
}
@objc func pasteMenuAction (){
headerView.showAlert(message: "提示", leftButtonTitle: "知道了")
}
}
