ios - 选择一个 textView 里面没有选择文本？
<p><p>我在 <code>UITableViewCell</code> 中有一个 <code>UITextView</code>。我希望 <code>UITextView</code> 可以选择但不是文本。当 <code>Menu Controller</code> 出现并且我想执行复制操作时，复制其中的所有文本而不仅仅是一部分。</p>
<p>我想要类似信使应用的东西:</p>
<p> <a href="/image/6FBYg.png" rel="noreferrer noopener nofollow"><img src="/image/6FBYg.png" alt="enter image description here"/></a> </p>
<p>目前我有:</p>
<p> <a href="/image/enNAB.png" rel="noreferrer noopener nofollow"><img src="/image/enNAB.png" alt="enter image description here"/></a> </p>
<p>提前感谢您! </p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>事实上，这并不容易，因为在路上会出现一些奇怪的东西，但我设法创建了一个自定义的。</p>
<p>步骤如下:</p>
<ol>
<li>创建<code>UITextView</code>的子类</li>
<li>覆盖<code>canPerformAction:
withSender:</code> 用于过滤菜单的默认操作
弹出。</li>
<li>配置 <code>textView</code> 以便无法<strong>编辑</strong>或
<strong>选择</strong>。</li>
<li>编辑 <code>UIMenuController</code> 项，提供菜单上的操作和按钮</li>
<li>为每个<code>UIMenuItem</code> ****添加不同的选择器(那是因为选择器的发送者不是<code>UIMenuItem</code>，而是<code>UIMenuController</code> 这导致了另一件事。查看 <a href="https://stackoverflow.com/a/9874092/2664437" rel="noreferrer noopener nofollow">here</a> 了解更多信息。我的 <a href="https://gist.github.com/eridbardhaj/768351b7c3632ae015ac" rel="noreferrer noopener nofollow">gist</a>)</li>
</ol>
<h2>代码</h2>
<p>废话不多说，代码如下:</p>
<p><strong>EBCustomTextView.h</strong></p>
<pre><code>//
//EBCustomTextView.h
//TestProject
//
//Created by Erid Bardhaj on 3/8/16.
//Copyright © 2016 Erid Bardhaj. All rights reserved.
//
#import <UIKit/UIKit.h>
typedef NS_ENUM(NSInteger, EBCustomTextViewMenuAction) {
EBCustomTextViewMenuActionCopy,
EBCustomTextViewMenuActionDefine,
EBCustomTextViewMenuActionRead
};
@class EBCustomTextView;
@protocol EBCustomTextViewMenuActionDelegate <NSObject>
- (void)customTextView:(EBCustomTextView *)textView didSelectMenuAction:(EBCustomTextViewMenuAction)action;
@end
@interface EBCustomTextView : UITextView
@property (weak, nonatomic) id<EBCustomTextViewMenuActionDelegate> menuActionDelegate;
@end
</code></pre>
<p><strong>EBCustomTextView.m</strong></p>
<pre><code>//
//EBCustomTextView.m
//TestProject
//
//Created by Erid Bardhaj on 3/8/16.
//Copyright © 2016 Erid Bardhaj. All rights reserved.
//
#import "EBCustomTextView.h"
@implementation EBCustomTextView {
EBCustomTextViewMenuAction currentAction;
}
- (void)awakeFromNib {
;
// Configure the textView
self.editable = NO;
self.selectable = NO;
}
#pragma mark - Datasource
- (NSArray *)items {
UIMenuItem *item = [ initWithTitle:@"Copy" action:@selector(copyMenuItemPressed)];
UIMenuItem *item1 = [ initWithTitle:@"Define" action:@selector(defineMenuItemPressed)];
UIMenuItem *item2 = [ initWithTitle:@"Read" action:@selector(readMenuItemPressed)];
return @;
}
#pragma mark - Actions
- (void)copyMenuItemPressed {
if () {
;
}
}
- (void)defineMenuItemPressed {
if () {
;
}
}
- (void)readMenuItemPressed {
if () {
;
}
}
#pragma mark - Private
- (void)menuItemPressedAtIndex:(NSInteger)index {
currentAction = index;
if () {
;
}
}
#pragma mark Helpers
- (void)showMenuController {
UIMenuController *theMenu = ;
theMenu.menuItems = ;
;
CGRect selectionRect = CGRectMake (0, 0, self.contentSize.width, self.contentSize.height);
;
;
}
#pragma mark - Overridings
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
// Filter any action for this textView except our custom ones
if (action == @selector(copyMenuItemPressed) || action == @selector(defineMenuItemPressed) || action == @selector(readMenuItemPressed)) {
return YES;
}
return NO;
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *theTouch = ;
if ( == 1&& ) {
;
}
}
@end
</code></pre>
<h2>实现</h2>
<p>将你的 textView 的类设置为 <code>EBCustomTextView</code> 并符合 <code>EBCustomTextViewMenuActionDelegate</code></p>
<p><strong>界面</strong></p>
<pre><code>@interface ViewController () <EBCustomTextViewMenuActionDelegate>
</code></pre>
<p><strong>viewDidLoad</strong></p>
<pre><code>- (void)viewDidLoad {
;
// Do any additional setup after loading the view, typically from a nib.
self.textView.menuActionDelegate = self;
}
</code></pre>
<p><strong>协议(protocol)一致性</strong></p>
<pre><code>#pragma mark - Delegation
#pragma mark EBCustomTextViewMenuActionDelegate
- (void)customTextView:(EBCustomTextView *)textView didSelectMenuAction:(EBCustomTextViewMenuAction)action {
switch (action) {
case EBCustomTextViewMenuActionCopy:
NSLog(@"Copy Action");
break;
case EBCustomTextViewMenuActionRead:
NSLog(@"Read Action");
break;
case EBCustomTextViewMenuActionDefine:
NSLog(@"Define Action");
break;
default:
break;
}
}
</code></pre>
<h2>输出</h2>
<p> <a href="/image/UuDPx.gif" rel="noreferrer noopener nofollow"><img src="/image/UuDPx.gif" alt="enter image description here"/></a> </p>
<p>享受:)</p></p>
<p style="font-size: 20px;">关于ios - 选择一个 textView 里面没有选择文本？，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/35865135/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/35865135/
</a>
</p>
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