I have a UITextView and need to add a CLEAR button below it such that when it is pressed it will clear that UITextView.
Not understanding how to connect the two elements or create a delegate in ObjC.
Can do it in VisualBasic.
Thank you.
Related
When I'm testing my app on a mouse-driven device, I'm seeing a couple of odd highlight issues that I would like to try and resolve.
The first occurs when I call up the app bar, hover the mouse over a button (at which point the button goes grey) and then press Escape to dismiss the app bar. If I then call up the app bar again, the button has stayed grey, even if the mouse isn't over it, and remains in that state until I move the mouse over it and then away again.
I can't immediately see a property of the button that I can reset to clear that state when the app bar gets dismissed.
The other oddity I'm seeing is that sometimes the first item in the list on the page will get a box drawn around it:
This seems to happen when the app bar is being dismissed. I'm guessing that this is because the item is in a particular state that causes the box to appear but I'm not sure what state or how to clear it. The box does not appear during normal use of my app.
Thanks for any clarification or solutions you can provide.
I found a simple way to workaround this issue. In the code for Clicked/Tapped set Visibility of the button:
CreateNewDatabase.Visibility = Visibility.Collapsed;
CreateNewDatabase.Visibility = Visibility.Visible;
It will reset button state to Normal.
Hope this helps!
So, the issue is that the VisualState for the Button is being set to PointedOver, and then not being unset (because your mouse isn't leaving the bounds of the control and therefore triggering a PointerExited event). What this means is that you'll have to manually set the VisualState of the Button if you want it to change in this manner. You could do it on AppBar's Closed event. Basically, do a recursive check of all Children of the Content property of the AppBar using the VisualTreeHelper. Check to see if the Child is a Button. If it is, set its VisualState using VisualStateManager.GoToState().
I've also figured out what was causing the black box around the button - it is to indicate that the button has Focus.
The rather strange thing is that I'm not really sure why that specific button is getting focus or how a user is supposed to give focus to a button without it just randomly happening so, until I figure that out, I've decided to comment out the Focus state support from the Visual Manager XAML used in the default GridView item style.
When I make a dialog using CDialog project of VC++,
I can not defocus any field on this dialog(CDialog).
What I want to do is how some field can be defocused
when I clicked the outside of this field with mouse.
Thanks for any advice and comments.
The only obvious question: WHY? Why do you want to de-focus from a control, and (possibly) not give focus to any control? Some control within the dialog should have a keyboard focus!
You can however, make a textbox, which would be outside the visible area of dialog, and SetFocus on that control, whenever you get WM_MOUSE* message(s) on the CDialog.
I use an UIScrollView to set the position of a CCLayer (when i drag with the finger). It work fine but in this CCLayer i've got a CCMenu with one button CCMenuItemImage.
When i click on this button it's ok. But if i press the button and drag just a little bit the layer, the button stay pressed and become not responsive.
thanks for your help
The UIScrollView interferes with the touch events received by CCMenu. It was never designed to share its touches with a UIView.
You have these options:
find and fix the issue by modifying the CCMenu class
write your own menu class
don't use UIScrollView or disable its touch input while the menu is active
I think you'll need to modify CCMenu and attempt to disable the scroll view's ability to scroll on touch. Have a look at the UIScrollView properties called scrollEnabled and delayContentTouches.
By the time the CCMenuItem callback has been called, it might already be too late.
I have a table listing some strings, and what I want is when I tap the add button on the navigation bar, a keyboard with a textField would jump up, so I can input a string in the textField, then when I tap the return key, the keyboard disappear as well as the textField, and the new string is added to the table.
I already make up a nib file with a toolBar containing a textField, and I just failed to go on.
How can I implement this idea? Use the inputAccessoryView? If so, that means the inputAccessoryView of the textField which belongs to the toolBar is gonna be the toolBar itself!
This seem kind of weird and I have not been able to make it work till now.
Or is there another way for this idea?
Thanks a lot!
I've solved the problems by using notification instead of inputAccessoryView.
There is a sample code in XCode called "KeyboardAccessory", and it gives a good example about using keyboard notifications!
Or custom a view with a tab, and set it as the textField's inputAccessoryView, that would also work!
I have attached a toolbar with a UITextField and UIButton to the keyboard when it becomes the first responder via the user taping inside the textfield
textField.inputAccessoryView = theToolbar;
Problem is, the toolbar disappears when the keyboard is dismissed, thus preventing any further input.
Any ideas on how to make the toolbar go back to the bottom of the screen rather than off it completely?
I'm thinking a delegate method might help but Im really not too sure. It seems once the inputAccessoryView always the inputAccessoryView :(
Cheers
The input accessory view is automatically dismissed with the input view (the keyboard, in this case). Generally you do not want to have an input accessory view in your view hierarchy. Instead, if you want your toolbar to scroll up when the keyboard is shown, you should follow the guidelines for Managing the Keyboard.
You could try using an additional toolbar that is offscreen as the inputAccessoryView, which could "fake" the appearance of what you are trying to do. Alternatively, have you tried adding the toolbar back to the bottom of the screen using
[self.view addSubview:theToolbar];
when the keyboard reaches the bottom of the screen? You can use keyboard notifications for this.