iOS中UIMenuController基本使用

我这里用了一个按钮，点击按钮的时候给弹出UIMenuController控件（详细参考）

下面的代码是按钮触发事件：

-(void)showPopupView:(UIButton *)button

{

button.selected = !button.selected;

//必须要有，如果要UIMenuController显示

[self becomeFirstResponder];

_menuController = [UIMenuController sharedMenuController];

UIMenuItem *menuitem_01 = [[UIMenuItem alloc] initWithTitle:@"delete" action:@selector (deleteAction)];

UIMenuItem *menuitem_02 = [[UIMenuItem alloc] initWithTitle:@"copy" action:@selector (copyAction)];

UIMenuItem *menuitem_03 = [[UIMenuItem alloc] initWithTitle:@"cancel" action:@selector(cancelAction)];

_menuController.menuItems = [NSArray arrayWithObjects:menuitem_01, menuitem_02, menuitem_03, nil];

[_menuController setTargetRect:CGRectMake(button.frame.origin.x, button.frame.origin.y, button.frame.size.width, 30) inView:self.view];

[_menuController setMenuVisible:YES animated:YES];

}

//必须要有，如果要UIMenuController显示

-(BOOL)canBecomeFirstResponder

{

return true;

}

//监听自己的定义事件，是 return YES； 否 return NO 即移除系统；

-(BOOL)canPerformAction:(SEL)action withSender:(id)sender

{

if (action == @selector(deleteAction) || action == @selector(copyAction) || action == @selector(cancelAction)) {

return YES;

}

return NO;

}



我想改变下UIMenuController的背景色，默认是黑色的，但是不知道怎么改动，如果你有办法请给我留言，谢谢！