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[英]Dismiss UIPopoverPresentationController with any gesture, not just tap
[英]UIPopoverPresentationController doesn't disable tap gesture on title view
我有带有导航栏的视图控制器,该导航栏包含处理点击手势的标题视图。 还有一个rightBarButtonItem
, UIAlertController
iPad上的UIAlertController
显示为弹出UIAlertController
。 下面的示例代码:
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = UIColor.whiteColor;
UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 100, 30)];
titleLabel.text = @"Popover test";
titleLabel.backgroundColor = UIColor.greenColor;
titleLabel.userInteractionEnabled = YES;
[titleLabel addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(titleLabelPress)]];
self.navigationItem.titleView = titleLabel;
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd
target:self
action:@selector(showPopover)];
}
- (void)showPopover {
UIAlertController *controller = [UIAlertController alertControllerWithTitle:nil
message:nil
preferredStyle:UIAlertControllerStyleActionSheet];
controller.popoverPresentationController.barButtonItem = self.navigationItem.rightBarButtonItem;
[controller addAction:[UIAlertAction actionWithTitle:@"One" style:UIAlertActionStyleDefault handler:nil]];
[controller addAction:[UIAlertAction actionWithTitle:@"Two" style:UIAlertActionStyleDefault handler:nil]];
[self presentViewController:controller animated:YES completion:nil];
}
- (void)titleLabelPress {
BOOL isYellow = [((UILabel *)self.navigationItem.titleView).backgroundColor isEqual:UIColor.yellowColor];
((UILabel *)self.navigationItem.titleView).backgroundColor = isYellow ? UIColor.greenColor : UIColor.yellowColor;
}
问题是当弹出窗口出现时,我仍然可以点击标题标签,并且弹出窗口不会消失。 另外,如果我点击状态栏,则弹出窗口不会消失。 出现这些问题的原因可能是什么?
根据以下答案:
单击NavigationBar时,UIPopoverController不会关闭
UIPopoverController似乎在显示时将导航栏添加到其passthroughViews数组中。
解决方法是:
[self presentViewController:controller animated:YES completion:^{
controller.popoverPresentationController.passthroughViews = nil;
}];
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