崩溃

​​Trapped uncaught exception 'UIViewControllerHierarchyInconsistency', reason: 'child view controller:<UICompatibilityInputViewController: 0x110ff5c10> should have parent view controller:<MHRewardVoiceDetailVC: 0x110e71010> but requested parent is:<UIInputWindowController: 0x104380400>'​​

操作

在一个自定义的​​UILabel​​​子类中
添加了一个​​​长按​​​事件
事件会弹出系统的​​​UIMenuController​​​ 长按时
崩!!!

代码：

@implementation JHLongPressCopyLabel

- (instancetype)init
{
    self = [super init];
    if (self) {
        self.userInteractionEnabled = YES;
        [self addGestureRecognizer:[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressActioin:)]];
    }
    return self;
}

- (BOOL)canBecomeFirstResponder
{
    return YES;
}

#pragma mark - private
- (void)longPressActioin:(UIGestureRecognizer *)gesture
{
    if (gesture.state == UIGestureRecognizerStateBegan) {
        UIView *view = gesture.view;
        [view becomeFirstResponder];
        
        UIMenuController *menuCtrl = [UIMenuController sharedMenuController];
        
        UIMenuItem *copyItem = [[UIMenuItem alloc] initWithTitle:@"复制" action:@selector(copyAction:)];
        menuCtrl.menuItems = @[copyItem];
        
        [menuCtrl setTargetRect:view.frame inView:view.superview];
        [menuCtrl setMenuVisible:YES animated:YES];
    }
}

- (void)copyAction:(UIMenuController *)menuCtrl
{
    [UIPasteboard generalPasteboard].string = self.text;
}

@end

问题

- (BOOL)canBecomeFirstResponder
{
    return YES;
}

与方法​​- (void)longPressActioin:(UIGestureRecognizer *)gesture​​​ 内的
​​​[view becomeFirstResponder];​​

导致了崩溃！！！

​​二选一​​​ 或者
​​都不选​​

即可！

额外的问题

唤起的菜单
如果不去点击菜单
而是去点击其他按钮
则菜单会一直显示
直到你点了TA！

长按复制内容

​​https://github.com/xjh093/JHLongPressCopy​​

一行代码召唤一个有意思的HUD

​​https://github.com/xjh093/JHAlertView​​