在UITextField的editingDidBegin中显示UIMenuController [英] Display UIMenuController in editingDidBegin of a UITextField

问题描述

我只想在文本字段激活后立即显示UIMenuController。

我现在做的是：

I simply want to display the UIMenuController right after a textfield has become active.
What i'm doing right now is:

- (IBAction)textFieldeditingDidBegin:(UITextField *)sender {
    // textfield menu item
    UIMenuController *menu = [UIMenuController sharedMenuController];
    [menu setTargetRect:sender.frame inView:self.view];
    [menu setMenuVisible:YES animated:YES];
}

方法被调用，但它不会显示菜单... < br>
如果我在文本字段上触摸+保持手势，它会定期出现。

The method gets called but it just will not display the menu...
If i do a touch+hold gesture on the textfield it comes up regularly.

我希望有一个简单的解决方案，
感谢

I hope there's a simple solution for that, Thanks

推荐答案

我找到了一个很好的解决方案。

I found a good solution to your question.

使用此方法开始编辑文本字段时，可以轻松地使 UIMenuController 出现：

You can easily make the UIMenuController appear when you start editing your text field with this method:

- (void)textFieldDidBeginEditing:(UITextField *)textField
{
    double delayInSeconds = 0.1;
    dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, delayInSeconds * NSEC_PER_SEC);
    dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
        UIMenuController *menu = [UIMenuController sharedMenuController];
        [menu setTargetRect:textField.frame inView:textField.superview];
        [menu setMenuItems:[NSArray arrayWithObjects:
                            [[UIMenuItem alloc] initWithTitle:@"Test" action:@selector(test)],
                            nil]];
        [menu setMenuVisible:YES animated:YES];
    });
}

我使用 dispatch_after 调用以确保之后> c> 所有默认系统调用都显示。

I use the dispatch_after call to make sure that the menu is show after all the defaults system calls on the UITextField are completed.

我也改变了 setTargetRect :: 方法的 inView：self.view inView：textField.superview 以确保菜单在文本字段的容器视图中正确显示。

I also changed the inView:self.view part of the setTargetRect:: method with inView:textField.superview to be sure the menu is showing correctly in the container view of the text field.

如果您还要禁用 UITextField 的默认菜单控件，您可以将此方法添加到您的控制器：

If you also want to disable the default menu controls for a UITextField you can add this method to your controller:

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender
{
    if (action == @selector(cut:))
        return NO;
    else if (action == @selector(copy:))
        return NO;
    else if (action == @selector(paste:))
        return NO;
    else if (action == @selector(select:) || action == @selector(selectAll:))
        return NO;
    else
        return [super canPerformAction:action withSender:sender];
}

这项工作真的在模拟器。我希望这将帮助你！

This work really well in the simulator. I hope this will help you!

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