I am writing a MonoTouch iOS app. I have read many postings about ResignFirstResponder and I am using that.
My app is a typical table view app. I have done my own custom table cell view. The UITextField controls that cause the numeric keypad to come up in the first place are all on the custom table cell.
Currently I have it so that if you tap on the background of the cell I call ResignFirstResponder on all the text fields. This seems to work, but is not intuitive. I had a new beta tester get it last night and he tapped on one of the text fields and the keypad came up and he was lost as to how to get rid of it. After I told him to just tap the background, he now is fine, but obviously I want a solution that is obvious and doesn't require me to tell everyone how it works.
I read one post about a way to add a DONE button to the keypad, but it looked like a total hack and even broke when 3.2.1 came out and I don't want to have to worry about my app breaking when a new OS comes out.
Suggestions?
I would keep the background click->ResignFirstResponder that you have already, but add to it.
Curious, what button do you have set in the bottom right of the keyboard? There are options to show a Done, Search, Go, Next etc. buttons that can be setup to ResignFirstResponder. Pick the button that makes sense in your situation.
You can hook into the bottom right button by setting a callback to UITextField.ShouldReturn and calling ResignFirstResponder. You can just return false (that return value is for allowing line breaks in your UITextField).
Found an example here of hooking up ShouldReturn.
Related
Since the release of javafx 8 is coming up right around the corner, I figured now would be a good time to get better acquainted with a few of the new features. First on my list: enhanced (true) 3D shapes and rendering! Working for an engineering company, being able to integrate a rich 3d environment into some of our visualizations will be great!
In any case, I was working through the 'getting started' here and all was well. Able to compile everything, getting familiar with how they structure all of their layouts in 3d, etc. etc. It was great! After familiarizing myself with some of the more advanced translations, I decided to take a look at their final 'sample 3d application' that had things like mouse and keyboard listeners to set the angle and orientation of the camera, which was the only thing I hadn't done yet. (you can find a link to the source code I downloaded for it, complete with a nbproject here It's called MoleculeSampleApp.zip and it's in the top right corner of the page).
So I go to compile it, everything shows up just fine, the molecule, the axis, and then I try to initiate any action at all, a mouse click, drag, a recognized keyboard input, etc. Everything on the scene simply vanishes.
Well that's strange, I think to myself, so I take a look at the code. Everything looks to be in order, and a few print lines later, I find out that the contents of the graph aren't disappearing until the very END of the listener, whenever that happens to be. Nothing inside of the listener is actually causing the disappearing (unless of course it's the hide/show keyboard shortcuts).
To be honest, I'm a bit baffled by this. There are no exceptions being thrown, no errors printing out. It just disappears, and that's the end of it.
If anyone has any idea why this is happening I would be immensely grateful. It's worth noting, I'm using the javafx 8 developer preview b132.
(if you would like me to post the entire source here, let me know, it's only about 600 lines altogether, but that's pretty heavy for a SO question so I'm just going to leave the links for now).
tl;dr
The moleculesimpleapp.zip located here makes everything disappear on any action it knows to listen for, with no clear reason, why?
-Will
I'm putting the final touches on an application that Ive been working on for quite a while and while I understand how to restyle existing components by using inheritance Im coming up blank in my search on how to accomplish this last thing.
I want to apply a custom color/image behind the text or icon representing the current activity I am in. This would be similar to how the tabs have the highlight underneath them while selected. I am already using the tabs and have figured out how to change the image resource that is the little underline in the tab bar. Now I just need to accomplish the same look for the action items.
Ive overlooked the actionbarsherlock library for the past day and a half but I dont see anywhere that I could do what I want to accomplish. I have to imagine that such a thing can be done but like I said before so far Im coming up short. Any help would be much appreciated.
I figured out a simple way to do what I asked earlier. I just created a square shape in xml, put text over it, assigned it the gradient and color I wanted and assigned it to that action item I wanted highlighted in the activity i was in.
I have an interesting (but frustraring) problem. I have an application which uses the full screen (this is meant to simulate a third-party fullscreen POS application).
My application displays a sequence of modeless dialog boxes on top of the full screen application. It shows one, hides it, then shows the next, hides it etc. After the 3rd show, the Windows taskbar appears about 1 second later. I can't figure out why.
I've stripped my code right back to see if its something I'm doing in my OnNcActivate handler (which I use to draw my skinned window) but I don't think it is as the problem appears to be timing related. I've tried running Spy++ as well as dumping messages in m WindowProc myself and I still can't see anything odd that would give me any clues.
There are some messages with ID 0x36e in my logs but I can't find out what they are supposed to be. I've checked various message ID lists and can't find them. They shouldn't be any message IDs of my own since WM_USER doesn't start until 0x400.
I know I could get around this problem by auto-hiding the taskbar but I can't ask our customers to configure their taskbars to auto-hide to get round my problem.
Any ideas why the taskbar would appear in relation to my modeless dialog boxes?
EDIT: I completely stripped out my self-drawn GUI code and I still have the same problem. I could be wrong but it would seem that when I call ShowWindow( SW_HIDE) first, Windows tries to activate "another Window" (as it says in MSDN). I think in this case its activating the taskbar rather than the POS application. If on the other hand I open my second window before calling ShowWindow( SW_HIDE ) on the second, then it seems to behave itself.
Cheers
Sparky
Following a long discussion I come to the conclusion that DestroyWindow was not the problem. I found in the end that displaying a dialog.. clicking on the POS, then clicking back on the dialog that sometimes the taskbar would appear. I have spent an entire week trying to find reasons for all of this but to no avail. I thought that assigning the POS window as the owner would solve the problem - it didn't. In the end the solution for my problem was to determine if the taskbar is obscured completely before showing my dialog. If it is, I hide the taskbar for the duration which my dialog is displayed (set its placement to SW_HIDE) and then set it to SW_SHOW when I close my dialog. The task bar doesn't pop up and annoy people anymore. Not a fantastic solution for other peoples' applications perhaps, but perfect for our customers.
I need to create a magnifier like feature in my app. Like the "loupe" effect on the iphone !
The problem is that I need to do that inside a popup window and I don't get how to make it work !
The popup window display a grid of colors that I generate and draw one by one using shapeDrawables. What I want is to display that color bigger, zoom on it when the user touch and move his finger around the popup window (color grid). The idea is to create a tracking-zooming effect on the colors so the user can see more clearly under wich color his finger is currently located.
Problems are :
I can't seem to create another popup window on top of this one, Android limitation I think ?
If I modify the current shapeDrawable, resize it, change the boundaries, It needs to re-display the popup window before it takes effect (which is not acceptable of course)
So, anyone knows of a way I could draw over that popup window ?
EDIT :
I've tried solving this issue using a Custom Toast object...But it doesn't quite do the trick. It works, but toast object appears slowly and so the touch motion is not in sync at all with the user movement over the color grid.
I'm not sure if this will help you or not, but you might be able to accomplish this by using a second Activity... this second Activity would use Android's translucent theme if you include the following attribute in your manifest:
<activity android:theme="#android:style/Theme.Translucent">
This second activity will now only contain what you place in your layout. That is... the "real" activity you're running will still be visible behind it (anywhere you don't cover it up with views in the new layout).
You also might prefer Theme.Dialog if you really want to resemble a popup.
Something to keep in mind if you take this approach is you will probably want to override onWindowFocusChanged() in the new activity, and finish() in the event of you losing focus. Additionally, you'll need to figure out how to share your data between the two activities.
Currently working on a mobile app in J2ME and have questions with ChoiceGroup radio button answer options. Any suggestion on how to make it so that no default answer is selected? We've tried:
cg8.setSelectedIndex( -1, true ); But get an out of bounds exception error
and
cg8.setSelectedFlags( boolean[] ) with all false, but also get another error.
To get around this, we've also tried creating an invisible radio button and have that set as selected, but couldn't find a way to make an invisible radio button either.
Any thoughts or suggestions would be great appreciated!!
It sounds to me like the platform is enforcing an appropriate convention, although I must apologise for taking a purist standpoint here; this won't really answer your question.
Radio buttons are used when there are multiple exclusive choices, of which one must be made; it makes a certain amount of sense, therefore, for the user interface to ensure that something is always selected. Ideally, the initial selection in a radio group should always be a safe and sensible default.
As far as I know, the only way to not have any radio button pre-selected is to draw the control yourself. Re-implement a radio button list using a Canvas or a CustomItem.
It's a lot of work, unfortunately.
You should look into LWUIT as it may have an intermediary solution.