following are the methods i use to get the key event, which are working fine on emulator but doesn't seem to work on device.
following are the methods i use to get the key event, which are working fine on emulator but doesn't seem to work on device.
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if (keyCode == KeyEvent.KEYCODE_SPACE) {
Log.e("onkeydown", "onkeydown");
}
return super.onKeyDown(keyCode, event);
}
#Override
public boolean dispatchKeyEvent(KeyEvent event) {
// TODO Auto-generated method stub
if (event.getKeyCode() == KeyEvent.KEYCODE_SPACE) {
Log.e("dispatch", "dispatch");
}
return super.dispatchKeyEvent(event);
}
#Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if (event.getKeyCode() == KeyEvent.KEYCODE_SPACE) {
Log.e("onkeyup", "onkeyup");
}
return super.onKeyUp(keyCode, event);
}
Try this..
editText.setOnKeyListener(new OnKeyListener() {
#Override
public boolean onKey(View v, int key, KeyEvent event) {
if (event.getAction()==KeyEvent.ACTION_DOWN && key == KeyEvent.KEYCODE_ENTER) {
//write code when key press
return true;
}
return false;
}
});
Related
I would like to validate user is signed in or not to achieve it i found something called VaadinServiceInitListener in vaadin 13.0.2 This class is used to listen to BeforeEnter event of all UIs in order to check whether a user is signed in or not before allowing entering any page.
I have created an vaadin 13.0.2 project with app-layout-addon by appreciated implemented login functionality and VaadinServiceInitListener to check whether a user is signed in or not.
public class AAACATInitListener implements VaadinServiceInitListener {
private static final long serialVersionUID = 1L;
private static InAppSessionContextImpl appContextImpl;
#Override
public void serviceInit(ServiceInitEvent event) {
System.out.println("in service init event");
event.getSource().addUIInitListener(new UIInitListener() {
private static final long serialVersionUID = 1L;
#Override
public void uiInit(UIInitEvent event) {
event.getUI().addBeforeEnterListener(new BeforeEnterListener() {
private static final long serialVersionUID = 1L;
#Override
public void beforeEnter(BeforeEnterEvent event) {
appContextImpl = (InAppSessionContextImpl)VaadinSession.getCurrent().getAttribute("context");
if (appContextImpl == null) {
WebBrowser webBrowser = UI.getCurrent().getSession().getBrowser();
String address = webBrowser.getAddress();
if(RememberAuthService.isAuthenticated(address) != null && !RememberAuthService.isAuthenticated(address).isEmpty()) {
//System.out.println("Found Remembered User....");
IBLSessionContext iblSessionContext = null;
try {
iblSessionContext = new UserBLManager().doRememberedStaffUserLogin(RememberAuthService.isAuthenticated(address), "");
if(iblSessionContext != null) {
InAppSessionContextImpl localAppContextImpl = new InAppSessionContextImpl();
localAppContextImpl.setBLSessionContext(iblSessionContext);
localAppContextImpl.setModuleGroupList(iblSessionContext.getSessionAccessControl().getPermittedModuleGroups());
appContextImpl = localAppContextImpl;
event.rerouteTo(ApplicationMainView.class);
}else {
Notification.show("Your access has been expired, Please contact your administrator", 5000, Position.BOTTOM_CENTER);
}
} catch (AuthenticationFailedException e) {
Notification.show("Authentication Failed, Please Reset Cookies And Try Again", 5000, Position.BOTTOM_CENTER);
} catch (Exception e){
e.printStackTrace();
Notification.show("Unexpected Error Occurred, Please Reset Cookies And Try Again", 5000, Position.BOTTOM_CENTER);
}
}else {
System.out.println("Session context is null, creating new context");
appContextImpl = new InAppSessionContextImpl();
VaadinSession.getCurrent().setAttribute("context", appContextImpl);
event.rerouteTo(LoginView.class);
}
} else {
System.out.println("Session context is not null");
InAppSessionContextImpl localAppContextImpl = new InAppSessionContextImpl();
localAppContextImpl.setBLSessionContext(appContextImpl.getBLSessionContext());
localAppContextImpl.setModuleGroupList(appContextImpl.getModuleGroupList());
appContextImpl = localAppContextImpl;
event.rerouteTo(ApplicationMainView.class);
}
}
});
}
});
}
public static void setBLSessionContext(IBLSessionContext iblSessionContext) {
appContextImpl.setBLSessionContext(iblSessionContext);
}
public static void setModuleGroupList(List<ModuleGroupVO> moduleGroupList) {
appContextImpl.setModuleGroupList(moduleGroupList);
}
private class InAppSessionContextImpl implements InAppSessionContext {
private static final long serialVersionUID = 1L;
private List<ModuleGroupVO> moduleGroupList;
private IBLSessionContext iblSessionContext;
private Map<String, Object> attributeMap;
public InAppSessionContextImpl() {
this.attributeMap = new HashMap<String, Object>();
}
#Override
public List<ModuleGroupVO> getModuleGroupList() {
return moduleGroupList;
}
public void setModuleGroupList(List<ModuleGroupVO> moduleGroupList) {
this.moduleGroupList = moduleGroupList;
}
#Override
public IBLSessionContext getBLSessionContext() {
return iblSessionContext;
}
public void setBLSessionContext(IBLSessionContext iblSessionContext) {
this.iblSessionContext = iblSessionContext;
}
#Override
public IBLSession getBLSession() {
if(iblSessionContext != null)
return iblSessionContext.getBLSession();
return null;
}
#Override
public boolean isPermittedAction(String actionAlias) {
if (getBLSessionContext() != null) {
if (getBLSessionContext().getSessionAccessControl() != null) {
return getBLSessionContext().getSessionAccessControl().isPermittedAction(actionAlias);
}
}
return false;
}
#Override
public void setAttribute(String key, Object attribute) {
attributeMap.put(key, attribute);
}
#Override
public Object getAttribute(String key) {
return attributeMap.get(key);
}
}
}
Expected results redirect to login page if user not signed in or else to main application page but AAACATInitListener is not listening.
If you are using Spring, simply add a #Component annotation to the class and it should work. If youre not using Spring, follow #codinghaus' answer.
To make Vaadin recognize the VaadinServiceInitListener you have to create a file called com.vaadin.flow.server.VaadinServiceInitListener and put it under src/main/resources/META-INF/services. Its content should be the full path to the class that implements the VaadinServiceInitListener interface. Did you do that?
You can also find a description on that in the tutorial.
The correct pattern to use beforeEnter(..) is not do it via VaadinServiceInitListener , instead you should implement BeforeEnterObserver interface in the view where you need use it and override beforeEnter(..) method with your implementation.
public class MainView extends VerticalLayout implements RouterLayout, BeforeEnterObserver {
...
#Override
public void beforeEnter(BeforeEnterEvent event) {
...
}
}
I had tried through below code but not getting key event.
editText1.setOnKeyListener(new OnKeyListener(){
public boolean onKey(View v, int keyCode, KeyEvent event){
if((event.getAction()==KeyEvent.ACTION_DOWN)&&(keyCode==KeyEvent.KEYCODE_ENTER))
{
editText1.clearFocus();
editText2.requestFocus();
return true;
}
return false;
}
});
use event.getKeyCode() instead of just keyCode
editText1.setOnKeyListener(new OnKeyListener(){
public boolean onKey(View v, int keyCode, KeyEvent event){
if((event.getAction()==KeyEvent.ACTION_DOWN)&&(event.getKeyCode()==KeyEvent.KEYCODE_ENTER))
{
editText1.clearFocus();
editText2.requestFocus();
return true;
}
return false;
}
});
I would use Textwatcher instead:
try this
editText1.addTextChangedListener(new TextWatcher() {
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
}
#Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
#Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
if (s.length()>0 && s.subSequence(s.length()-1, s.length()).toString().equalsIgnoreCase("\n"))
{
editText1.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL));
editText1.clearFocus();
editText2.requestFocus();
}
}
});
I want to come to home screen when clicking on the back button from my application in blackberry. I have searched for this in google and stackoverflow, But I didn't get any solution. Anybody help for this.
In My Starting Screen i wrote like this for back button.
protected boolean keyDown(int keycode, int time)
{
if (Keypad.key(keycode) == Keypad.KEY_ESCAPE)
{
close();
return true;
}
else
{
return super.keyDown(keycode, time);
}
}
In my HomeScreen i wrote like this.
protected boolean keyDown(int keycode, int time)
{
if (Keypad.key(keycode) == Keypad.KEY_ESCAPE)
{
UiApplication.getUiApplication().pushScreen(new StartingScreen());
return true;
}
else
{
return super.keyDown(keycode, time);
}
}
From my application HomeScreen I am able to come to starting screen of the my application. after that when i click on back button from starting screen i need to go to blackberry home screen that means i need to exit the app and come out of that. I wrote close(); to come to blackberry home screen. but its not working. it is again coming to my application homescreen.
Override keyDown method in your subclass of MainScreen.
protected boolean keyDown(int keycode, int time) {
int key = Keypad.key(keycode);
if(key==Characters.ESCAPE){
// do something here
return true;
}
return super.keyDown(keycode, time);
}
To come to home screen
while(!(UiApplication.getUiApplication().getActiveScreen() instanceof HomeScreen)){
UiApplication.getUiApplication().popScreen(UiApplication.getUiApplication().getActiveScreen());
}
I got the Solution... i have written lik this.
public boolean onClose()
{
int choose=Dialog.ask(Dialog.D_YES_NO, "Are you sure Want to Exit?");
if(choose==Dialog.YES)
{
System.exit(0);
}
return true;
}
Try this -
public class yourclass extends MainScreen{
public yourclass(){
}
}
public boolean onClose() {
Application.getApplication().invokeLater(new Runnable() {
public void run() {
//close this screen and push your home screen
}
});
return true;
}
I am creating a BlackBerry application which contains two ObjectChoiceFields. I want to add listeners for each of them. I searched for that but did not find any of useful code.
It is like a country-state selector on websites. I am looking for simple logic, and I have no need of any database oriented solution. Can anyone describe how to add listeners for those two ObjectChoiceField?
I have have attached my code below, but it is only working for country choice field. Nothing happens when I change state choice.
public class MyApplication extends MainScreen implements FieldChangeListener
{
ObjectChouceField choice_c,choice_s;
public MyApplication ()
{
this.setTitle("hai");
choice_c = new MyChoiceField("Select a Country", countryArray);
choice_c.setChangeListener(this);
this.add(choice_c);
choice_s = new MyChoiceField("Select a State", stateArray);
choice_s.setChangeListener(this);
this.add(choice_s);
..................
..................
}
public void fieldChanged(Field field, int context)
{
if(field == choice_category)
{
Dialog.alert("choice country has been pressed");
}
else if(field == choice_round)
{
Dialog.alert("choice state has been pressed");
}
}
}
Have you tried overriding the navigationClick method of the ObjectChoiceField?
Here is an example:
ObjectChoiceField selectionField = new ObjectChoiceField("Select the Country",countryArray)
{
protected boolean navigationClick(int arg0, int arg1)
{
return super.navigationClick(arg0, arg1);
}
};
cf is the ChoiceField. Use the getSelectedIndex to and trigger events accordingly.
cf.setChangeListener(new FieldChangeListener() {
public void fieldChanged(Field field, int context) {
// TODO Auto-generated method stub
switch (cf.getSelectedIndex()) {
case 0:
//code here //
break;
default:
break;
}
}
});
How to implement click event on a image in picture scroll field?
sorry, but override touchEvent doesn't work, but try to override trackwheelClick:
PictureScrollField pictureScrollField = new PictureScrollField(150, 100){
protected boolean trackwheelClick(int status, int time) {
return super.trackwheelClick(status,time);
};
};
you can override touchEvent
PictureScrollField pictureScrollField = new PictureScrollField(150, 100) {
protected boolean touchEvent(TouchEvent message) {
if (TouchEvent.CLICK == message.getEvent()) {
FieldChangeListener listener = getChangeListener();
if (null != listener)
listener.fieldChanged(this, 1);
return true;
}
return super.touchEvent(message);
}
};
and then add FieldChangeListener:
pictureScrollField.setChangeListener(new FieldChangeListener() {
public void fieldChanged(Field field, int context) {
if (context == 1) {
Dialog.alert("click:" + ((PictureScrollField)field).getCurrentImageIndex());
}
}
});