First, I have an TextField. When user click on it, DatePicker will appear (in the same textfield's view). After user choose date, DatePicker should be disappear, and textfield should show selected date.
I have tried this code in ViewDidLoad:
txtTime.TouchDown += (sender, e) => {
UIDatePicker picker = new UIDatePicker (new RectangleF (0, 20, this.View.Bounds.Width, 10));
picker.Date = DateTime.Now;
picker.Mode = UIDatePickerMode.Time;
this.Add(picker);
txtTime.ResignFirstResponder();
};
But I have some problem:
Can't disable keyboard (ResignFirstResponder() doesn't work)
I don't know how to handle select date even of DatePicker to set for Textbox
The DatePicker appear without 'close' or 'done' button, so can't return to textfield view (could I use Datepicker without actionsheet?).
How can I solve that?
In the book "Developing CSharp Apps for iPhone and iPad using MonoTouch - 2011", chapter 7 "Standard Controls" you could see example of how to implement picking date.
Basic idea is to:
Put DatePicker on a UIActionSheet (create custom class, which controls DatePicker and UIActionSheet actually);
Add label "Choose date, then press OK" and buttons "OK"/"Cancel" to the top side of UIActionSheet's View;
Show UIActionSheet on textField.EditingDidBegin event.
Screenshot:
Sorry for Russian locale settigs.
this.txtTime.shouldreturn += (txtTime) => {
txtTime.resignfirstresponder ();
return true;
}
Related
Is it possible to detect when the Today widget is expanded/contracted or 'Show More' button is tapped in Objective C?
There is no way to detect whether the Show More button has been tapped in Today Extension.
What you can do is determine if it's open with checking frame height.
You can add a boolean and set it in :
- (void)widgetActiveDisplayModeDidChange:(NCWidgetDisplayMode)activeDisplayMode withMaximumSize:(CGSize)maxSize {
if (activeDisplayMode == NCWidgetDisplayModeCompact) {
//non expanded
} else {
//expanded
}
}
You can also have a layout that doesn't need to know if it's opened or closed, that's what most apps do.
Hope this helps :)
Hi... I am having an app in which I am using UIAlerController to show alert view.
I am sucessfully able to show it but the problem is I can not dismiss the view on touching outside. I have to create a view manually and a cancel button (shown in screenshot).
I know I can get the touch with putting Uialertactionstyle cancel but that makes my UI improper.
So Is there any other way so that I can get the touch event on outside touch?
Thanks in advance.
I try to use xcode tool to see the view hierarchy ,and it looks like as below:
I find the correct view to add tap gesture,so I modify the code and it works.
UIAlertController alert;
partial void UIButtonTouchUpInside(UIButton sender)
{
alert = UIAlertController.Create("title", "msg", UIAlertControllerStyle.ActionSheet);
this.PresentViewController(alert, true, () =>
{
UITapGestureRecognizer tap = new UITapGestureRecognizer(tapAction);
alert.View.Superview.Subviews[0].AddGestureRecognizer(tap);
});
}
void tapAction()
{
alert.DismissViewController(true, null);
}
I try to implement a custom ContextMenu in a LongListSelector.
I'm not using the ContextMenu from Microsoft.Phone.Controls.Toolkit, it's basically the same as in the Rowi App:
(source: hiddenpineapple.com)
Approach 1
My list item toggles a VisualState on hold and an overlay is shown with controls in it.
The problem
I can't find a way to go back to the default state when the user clicks outside of the list item (as in the default ContextMenu).
Approach 2
I've implemented a custom template for the toolkit ContextMenu which looks exactly the same. I had to move its margin top to -itemHeight, as by default it is below the item.
The problem
The problem with this solution is, that it automatically closes itself when opening and I couldn't figure out how to avoid this.
Another problem was that it didn't work well with TiltEffect.IsTiltEnabled from the Toolkit (visual problems).
I need your help
Any suggestions on how to get this working?
Answer
Thanks to Cheese, now I know how to properly close the menu when the user clicks outside.
His suggestion was to get the coordinates of a Tap event on the current page, and check if it's inside the menu. When not, close the menu.
So I added a Tap listener to the page when the menu opens, and removed it when the menu closes. From the page listener I got the event coordinates and could check if it's inside the control which holds the menu (same size and position). I received the position of the control with Point leftUpperPoint = control.TransformToVisual(page).Transform(new Point(0, 0)) and the rightLowerPoint by adding the ActualWidth and ActualHeight.
But then I realized:
Why should I even calculate if the tap is inside the menu? I always want to close the menu when the user taps anywhere on the screen. If it's outside, yes. If it's on a menu button, yes.
Another modification I made was to listen for MouseLeftButtonDown instead of Tap as it also triggers when the user swipes.
So I removed this code and came up with the following:
private void ToggleMenu(object sender, System.Windows.Input.GestureEventArgs e)
{
PhoneApplicationFrame frame = ((PhoneApplicationFrame)Application.Current.RootVisual);
VisualState state = this.States.CurrentState;
if (state == null || state.Name == "DefaultState")
{
frame.MouseLeftButtonDown += MouseDownDelegate;
this.State = "MenuState";
}
else
{
frame.MouseLeftButtonDown -= MouseDownDelegate;
this.State = "DefaultState";
}
}
private void MouseDownDelegate(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
ToggleMenu(sender, null);
}
This works perfectly!
Thanks to Cheese for the hint.
Something like this by #denniscode http://dotnet.dzone.com/articles/rowi-show-tap-menu
Approach 1 problem
The best solution would be:
Get the menus coordinates, when user makes a tap - you check are tap coordinates on menu or not, if not - dissmiss - simple.
Approach 2 problem
I guess you had some button in a corner and when you tapped on it - nothing happened? And when you dissmissed the Tilt all worked. It seems that tilt works faster than a click, so, tilt changes the button coordinates, and device thiks you have missed/or dragged off
You can use what #ScottIsAFool suggested and maybe create another Dependency Property on your TapMenu control of type UIElement named CloseWhenTappedElement and automatically listen for Tap events inside your control once set. For example
<Grid x:Name="TapArea"/>
<TapMenu CloseWhenTappedElement="{Binding ElementName=TapArea"}/>
I'm trying to write a Safari extension that consists of a button on the main toolbar with a popover tied to it, and a contextual menu item. The basic feel is modeled after the feel of the 1Password extension.
One of the jobs of the popover is to allow a person to log in. I'm also conditionally changing the action of the contextual menu item, and if a who person isn't logged in clicks the menu item I would like to show the popover allowing them to log in, but I can't find a way to do this in the developer guides.
How do I "show" a popover?
If you only have one toolbar item and one popover (and never plan to add more), then it's just one line. Assuming you've already assigned the popover to the toolbar item in Extension Builder, you can just use:
safari.extension.toolbarItems[0].showPopover();
But if you have more than one popover and (potentially) more than one toolbar item, here's a generalized function to open a popover, specified by its identifier, under the specified toolbar item in the active browser window:
function showPopover(popoverId, toolbarItemId) {
var toolbarItem = safari.extension.toolbarItems.filter(function (tbi) {
return tbi.identifier == toolbarItemId && tbi.browserWindow == safari.application.activeBrowserWindow;
})[0];
var popover = safari.extension.popovers.filter(function (po) {
return po.identifier == popoverId;
})[0];
toolbarItem.popover = popover;
toolbarItem.showPopover();
}
I have two buttons,if the first button is clicked two textfields will come and the second button dimension will change to next to the textfields.Now if i click the second button one textfield will appear.I did all those things.Now my question is if we click the second button,textfield will appear with what ever the dimensions we have given,but if we click the second button after clicking the first button also dimensions should change.Can any one help to do this.
Thank You
you can add multiple selectors on a single button for different control states
Your question is vaguely phrased. If I understood correctly, when the second button is pressed, you want two different actions done depending on whether the first button has previously been pressed or not. If that's the case, the solution is to define a boolean flag, which will be set to YES when the first button is pressed, and will be set to NO (if needed) after the second button's action is completed.
In your header file:
#interface yourViewController: UIViewController {
BOOL firstButtonFlag;
}
And in yourViewController.m file:
-(void)viewDidLoad {
firstButtonFlag = NO; // technically redundant line, just to show the concept
}
-(IBAction)firstButtonPressed {
firstButtonFlag = YES;
// whatever action you want done
}
-(IBAction)secondButtonPressed {
if (firstButtonFlag) {
// whatever action if first button had been pressed before
firstButtonFlag = NO; // resetting the flag for next round
}
else {
// whatever action if first button had NOT been pressed before
}
}