UIMenuController自定义项目 [英] UIMenuController Custom Items

问题描述

我创建了一个UIMenuController，并设置了一个自定义菜单项，如下所示：

I have created a UIMenuController and have set it a custom menu item like so:

UIMenuController *menuController = [UIMenuController sharedMenuController];
UIMenuItem *item1 = [[UIMenuItem alloc] initWithTitle:@"Do This" action:@selector(item1)];
[menuController setMenuItems:[NSArray arrayWithObject:item1]];

但是我想让这个对象成为唯一出现的对象，所以我添加了这个代码：

But I wanted that object to be the only one to appear so I added this code:

- (BOOL)canPerformAction: (SEL)action withSender: (id)sender {
    BOOL answer = NO;

    if (action == @selector(item1))
        answer = YES;

    return answer;
}

问题是它仍然显示其他##标题##项目，例如选择，全选和粘贴。
这可能与显示在 UITextView 中有关。
但是如果显示所有其他项目，如何停止？

The problem is it still shows other## Heading ## items, such as "Select", "Select All" and "Paste". This may have something to do with this being displayed in a UITextView. But how do I stop if from displaying all other items?

推荐答案

其中你想要子类 UITextView 。我只是试试这个与下面的代码，显示的唯一的菜单项是我 项目。

I think this is one of the few cases where you want to subclass UITextView. I just tried this with the following code, and the only menu item that is shown is my Do Something item.

从我的 TestViewController.m

@implementation TestViewController

- (void) doSomething: (id) sender
{
    NSLog(@"Doing something");
}

- (void) viewDidLoad
{
    UIMenuController *menuController = [UIMenuController sharedMenuController];
    UIMenuItem *item = [[[UIMenuItem alloc] initWithTitle: @"Do Something"
        action: @selector(doSomething:)] autorelease];
    [menuController setMenuItems: [NSArray arrayWithObject: item]];
}

@end

$ c> MyTextView.h ：

Code for my MyTextView.h:

//  MyTextView.h

#import <UIKit/UIKit.h>

@interface MyTextView :UITextView {

}

@end

的代码MyTextView.m ：

//  MyTextView.m

#import "MyTextView.h"

@implementation MyTextView

- (BOOL) canPerformAction:(SEL)action withSender:(id)sender
{
    return NO;
}

@end

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