We are using Sun Java Wireless Toolkit 2.5.2 and lcdui package for our j2me application. We want to disable the navigation keys (UP, DOWN, LEFT, RIGHT) programmatically. How can I do it?
public void keyPressed(int keyCode) {
int action = getGameAction(keyCode);
if (action == UP || action == DOWN || action == LEFT || action == RIGHT)
{}
else
super.keyPressed(keyCode);
}
Related
I'm searching for ways to implement a swipe gesture recognizer which only triggers when you swipe from the outer left side of the screen to the right. We need the gesture to open our custom SideMenu. I tried to use a simple UISwipeGestureRecognizer with the SwipeDirection property set to right, but that gets triggered on every swipe from left to right, no matter what the startpoint of the swipe is.
Ideally, we want the animation of it to look and feel like the InteractivePopGestureRecognizer of a UINavigationController. We are already using a NavigationController, which pushed our MainView over our IntroView. Now, we disable the InteractivePopGestureRecognizer, so you aren't able to go back to the IntroView. That's our problem. If it is possible, we don't want to disable the gesture of the NavigationController, but change the action of it. So the swipe from the far left side of the screen to the right would not pop the current viewcontroller, but open our SideMenu.
Is it possible to override the InteractivePopGestureRecognizer to change the action of it? If this isn't possible, do you have another idea on how to create the exact same gesture recognizer? It has to be possible somehow because many apps only open their SideMenu if your startpoint of the gesture is the left (or right) side of the screen. (e.g. Reddit)
Thanks for any help in advance.
You could use Touch Events and UISwipeGestureRecognizer to do that.
The workaround that is override TouchesBegan method to detect the started point whether fit your needs, and if so add UISwipeGestureRecognizer for View.
SwipeGestureRecognizer rightSwipeGesture;
public override void TouchesBegan (NSSet touches, UIEvent evt)
{
base.TouchesBegan (touches, evt);
UITouch touch = touches.AnyObject as UITouch;
if (touch != null)
{
//code here to handle touch
CoreGraphics.CGPoint swipPoint = touch.LocationInView(View);
if(swipPoint.X < 0.5)
{
rightSwipeGesture = new SwipeGestureRecognizer { Direction = SwipeDirection.Right };
rightSwipeGesture.Swiped += OnSwiped;
View.AddGestureRecognizers(rightSwipeGesture);
}
}
}
public override void TouchesEnded (NSSet touches, UIEvent evt)
{
base.TouchesBegan (touches, evt);
if(null != rightSwipeGesture ){
rightSwipeGesture.Swiped -= OnSwiped;
View.RemoveGestureRecognizers(rightSwipeGesture);
}
}
=============================Update=================================
I found a workaround only use one GestureRecognizer will make it works. You could have a look at UIScreenEdgePanGestureRecognizer. Although it's a Pan gesture, however if you not deal with somethind with the added view, it will work as a swip gesture. In addition, UIScreenEdgePanGestureRecognizer only can work when on the screen edge. You could set the Left edge to handle your needs.
For example:
UIScreenEdgePanGestureRecognizer panRightGestureRecognizer = new UIScreenEdgePanGestureRecognizer();
panRightGestureRecognizer.Edges = UIRectEdge.Left;
panRightGestureRecognizer.AddTarget(() => HandleSwap(panRightGestureRecognizer));
View.AddGestureRecognizer(panRightGestureRecognizer);
private void HandleSwip(UIScreenEdgePanGestureRecognizer panRightGestureRecognizer)
{
Point point = (Point)panRightGestureRecognizer.TranslationInView(View);
if (panRightGestureRecognizer.State == UGestureRecognizerState.Began)
{
Console.WriteLine("Show slider view");
}
}
Need to have transparent navigation bar
https://developer.xamarin.com/recipes/ios/content_controls/navigation_controller/change_the_nav_bar_transparency/
tried with this but not working.
Any Suggestion ?
Although, your question is not fully descriptive and not sure what exactly you want to achieve by saying "Not Working" from the given link.
Write following code in respective override methods of the ViewController in which you want to achieve the Transperent NavigationBar for that specific ViewController only.
public override void ViewWillAppear(bool animated)
{
base.ViewWillAppear(animated);
if (NavigationController != null)
{
NavigationController.NavigationBar.SetBackgroundImage(new UIImage(), UIBarMetrics.Default);
NavigationController.NavigationBar.ShadowImage = new UIImage();
NavigationController.NavigationBar.Translucent = true;
NavigationController.View.BackgroundColor = UIColor.Clear;
NavigationController.NavigationBar.BackgroundColor = UIColor.Clear;
}
}
public override void ViewWillDisappear(bool animated)
{
base.ViewWillDisappear(animated);
if (NavigationController != null)
{
NavigationController.NavigationBar.SetBackgroundImage(null, UIBarMetrics.Default);
NavigationController.NavigationBar.ShadowImage = null;
NavigationController.NavigationBar.BarTintColor = UIColor.Red; //Provide your specific color here
}
}
If you want to set this Globally, Try it in AppDelegate's FinishedLaunching method :
UINavigationBar.Appearance.SetBackgroundImage(new UIImage(), UIBarMetrics.Default);
UINavigationBar.Appearance.ShadowImage = new UIImage();
UINavigationBar.Appearance.BackgroundColor = UIColor.Clear;
UINavigationBar.Appearance.Translucent = true;
Hope this helps!.
A single navigation bar is used for a particular navigation controller in iOS. So if you want to make it transparent for a single VC then you have to make it transparent when you navigate to that VC. And then change it back when you coming back from that VC in viewWillDisappear (or viewDidDisappear) methods.
I have an android app with certain keyboard layouts and some defined actions for the enter key on some textviews. For e.g., the textviews are defined with
android:imeOptions="actionGo"
android:inputType="text"
and i have an EditText with onEditorActionListener defined as
txtView.setOnEditorActionListener(this);
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_GO) {
// do something
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
return true;
}
return false;
}
This works fine in the android version, but when the same is ported to BB 10 device, the enter key is not reflected with the specified action (in this case 'Go') and also, when the enter button is tapped, nothing happens even thought the action listener is defined.
Is there a way to resolve this or make it work? Or am i missing something here?
I am running on Z10 with 10.0.9.422.
I want to show the last item added in the table view when appears a scroll bar. Is there any way for the same and it will be grateful if can.
I have checked scroll pane with horizontal and vertical setValue() property. Is there any similar way for the table view scroll bar?
Check the TableView.scrollTo() out.
Here is a full generic solution:
public static <S> void addAutoScroll(final TableView<S> view) {
if (view == null) {
throw new NullPointerException();
}
view.getItems().addListener((ListChangeListener<S>) (c -> {
c.next();
final int size = view.getItems().size();
if (size > 0) {
view.scrollTo(size - 1);
}
}));
}
I am using Java Micro Edition and I am trying to create a simple login form with a record store. When the user enters the details I'd like to check them against the ones stored and then move onto another screen like a welcome area.
I have a feeling it has something to do with the form element and switching between it but I can't seem to get anywhere with google
try this
form = new Form("login");
form.addCommand(getExitCommand());
form.addCommand(getOkCommand());
form.setCommandListener(this);
public void commandAction(Command command, Displayable displayable) {
if (displayable == form) {
if (command == exitCommand) {
exitMIDlet();
} else if (command == okCommand) {
display.setCurrent(getWelcomeForm());
}
} else if (displayable == form1) {
if (command == backCommand) {
// do something else
}
}
}
display is something that should be created in the constructor and also above it i.e.
public class YourMidlet extends MIDlet implements CommandListener {
private Display display;
private Form form1;
private Form form2;
public YourMidlet
{
display = Display.getDisplay(this);
form 1 = new Form("hello form this is form 1");
form 2 = new Form("hello form 2");
display.setCurrent(form1);
}
}
you then do:
display.setCurrent(form2);
to switch to form 2