i want to create a alert dialog with radiobuttons for single selection or alert dialog with Checkboxes for Multiselection in blackberry.it is possible in android.but i want in blackberry.i searched in google.but i didn't got any solution.please give any suggestions r usefull links for this problem.
import net.rim.device.api.system.Bitmap;
import net.rim.device.api.ui.component.CheckboxField;
import net.rim.device.api.ui.component.Dialog;
import net.rim.device.api.ui.container.DialogFieldManager;
public class CheckboxInputDialog extends Dialog{
private CheckboxField checkboxEditField;
public CheckboxInputDialog(String choices[],int values[], String label){
super(label, choices,values,Dialog.OK, Bitmap.getPredefinedBitmap(Bitmap.INFORMATION), Dialog.GLOBAL_STATUS);
checkboxEditField = new CheckboxField("Lablel",false);
net.rim.device.api.ui.Manager delegate = getDelegate();
if( delegate instanceof DialogFieldManager){
DialogFieldManager dfm = (DialogFieldManager)delegate;
net.rim.device.api.ui.Manager manager =dfm.getCustomManager();
if( manager != null ){
manager.insert(checkboxEditField, 0);
}
}
}
}
Now Call this dialog at following way...
String choices[] = { "OK", "CANCEL" };
int values[] = { Dialog.OK, Dialog.CANCEL };
CheckboxInputDialog d = new CheckboxInputDialog(choices,values,"Dialog Label");
d.show();
Output will Be:
Get Event of OK and Cancel Button.
String choices[] = { "OK", "CANCEL" };
int values[] = { Dialog.OK, Dialog.CANCEL };
final CheckboxInputDialog d = new CheckboxInputDialog(choices, values,"Dialog Label");
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
int iResponse = d.doModal();
if (iResponse == 0) {
System.out.println("Press Ok");
}else{
System.out.println("Press Cancel");
}
}
});
Hope Help full..
Create popupScreen and in this screen you can add radiobuttons and Checkboxes.
public class Custom_Popup extends PopupScreen {
public Custom_Popup() {
// TODO Auto-generated constructor stub
super( new VerticalFieldManager(Manager.VERTICAL_SCROLL),
Field.NON_FOCUSABLE | Field.USE_ALL_WIDTH );
}
}
On your event, push this screen.
UiApplication.getUiApplication().pushScreen(new MyPopup());
public class MyPopup extends PopupScreen{
public MyPopup() {
super(new VerticalFieldManager(), Field.FOCUSABLE);
add();//add checkbox , radio buttons here.
}
Related
I am working on an Xamarin.Forms project specifically for the iOS platform. I have an Editor control and a Button control next to each other. When I focus the editor, enter some text, and click the button it appears the command is not being fired but rather the keyboard is simply closing. I then have to tap the add button again for the command to be fired.
<StackLayout Orientation="Horizontal">
<Editor HorizontalOptions="FillAndExpand"
Text="{Binding EditorText}"/>
<Button Text="Add"
Command="{Binding AddCommand}"/>
</StackLayout>
I have tried creating a custom renderer that prevents the keyboard from closing initially and then close it after a delay. That allows the command to be fired, but I am stuck with the keyboard being open.
public class KeyboardEditorRenderer : EditorRenderer
{
protected override void OnElementPropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (e.PropertyName == VisualElement.IsFocusedProperty.PropertyName)
{
if (Control != null)
{
Control.ShouldEndEditing = (UITextView textField) =>
{
Task.Delay(10).ContinueWith(_ =>
{
// THIS DOES NOT WORK
textField.EndEditing(true);
});
return false;
};
}
}
base.OnElementPropertyChanged(sender, e);
}
}
My ideal solution is that you are able to enter text, tap the add button, and the keyboard closes and the command executes simultaneously. Any ideas on how to achieve this?
EDIT: It turns out the problem is with the custom renderer I use for the page. The custom renderer resizes the page when the keyboard appears so that it does not cover my editor field.
public class KeyboardPageRenderer : PageRenderer
{
private bool keyboardShowing;
private NSObject keyboardWillShow;
private NSObject keyboardWillHide;
private double duration;
private UIViewAnimationCurve curve;
public override void ViewDidLoad()
{
base.ViewDidLoad();
this.keyboardWillShow = UIKeyboard.Notifications.ObserveWillShow(this.KeyboardWillShow);
this.keyboardWillHide = UIKeyboard.Notifications.ObserveWillHide(this.KeyboardWillHide);
}
public override void ViewDidDisappear(bool animated)
{
base.ViewDidDisappear(animated);
this.keyboardWillShow.Dispose();
this.keyboardWillHide.Dispose();
}
private void KeyboardWillShow(object sender, UIKeyboardEventArgs args)
{
if (!this.keyboardShowing)
{
this.keyboardShowing = true;
var keyboardFrame = UIKeyboard.FrameBeginFromNotification(args.Notification);
this.duration = args.AnimationDuration;
this.curve = args.AnimationCurve;
this.ScrollTheView(true, keyboardFrame.Height);
}
}
private void KeyboardWillHide(object sender, UIKeyboardEventArgs args)
{
if (this.keyboardShowing)
{
this.keyboardShowing = false;
var keyboardFrame = UIKeyboard.FrameBeginFromNotification(args.Notification);
this.duration = args.AnimationDuration;
this.curve = args.AnimationCurve;
this.ScrollTheView(false, keyboardFrame.Height);
}
}
private void ScrollTheView(bool scale, nfloat scrollAmount)
{
UIView.BeginAnimations(string.Empty, IntPtr.Zero);
UIView.SetAnimationDuration(this.duration);
UIView.SetAnimationCurve(this.curve);
var frame = View.Frame;
// Assumes the page belongs to a tabbed view.
// This does not scale to pages that do not have one.
UITabBarController tabBarController = new UITabBarController();
nfloat tabHeight = tabBarController.TabBar.Frame.Size.Height;
scrollAmount -= tabHeight;
if (scale)
{
frame.Y -= scrollAmount;
}
else
{
frame.Y += scrollAmount;
}
View.Frame = frame;
UIView.CommitAnimations();
}
}
There is two issues in your approach
After Task.Delay(10), you are not on the UI thread anymore, which means you have to use Device.BeginInvokeOnMainThread in order to access UI elements.
Control.ShouldEndEditing must be cleared before you call EndEditing
A working solution would look like this:
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (Element == null || Control == null)
return;
VisualElement element = Element as VisualElement;
if (element == null)
return;
if (e.PropertyName == VisualElement.IsFocusedProperty.PropertyName && element.IsFocused == false)
{
Control.ShouldEndEditing = (UITextView control) =>
{
Device.BeginInvokeOnMainThread(() =>
{
control.ShouldEndEditing = null;
control.EndEditing(true);
});
// prevent the keyboard from closing
return false;
};
}
}
I am using javafx to make a ListView in which add Observable List which contains buttons.
I want to add action on each buttons in this lists.Any help...
ObservableList videoLists = null;
if (listView.getSelectionModel().getSelectedItem().equals("class 8")) {
classTitleID.setText("class 8 video lists");
File physicsFolder = new File("D:\\videos\\physics");
File[] listOfFiles = physicsFolder.listFiles();
videoLists = FXCollections.observableArrayList();
for (File file : listOfFiles) {
if (file.isFile()) {
videoLists.add(new Button(file.getName()));
physicsListview.setItems(videoLists);
}
}
}
simply do
for (File file : listOfFiles) {
if (file.isFile()) {
Button button = new Button(file.getName());
button.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent actionEvent) {
//your action
}
});
videoLists.add(button);
physicsListview.setItems(videoLists);
}
}
It's generally a bad idea to have Node subclasses as the data type in ListViews (or TableViews, ComboBoxes, etc): it breaks MVC. Make your ListView a ListView<File> and use a cellFactory to show the button in the ListView cells. You can set the action handler there.
ListView<File> physicsListview = new ListView<>();
ObservableList<File> videoLists = FCollections.observableArrayList();
//...
for (File file : listOfFiles) {
if (file.isFile()) {
videoLists.add(file);
}
}
physicsListview.setItems(videoLists);
physicsListview.setCellFactory(new Callback<ListView<File>, ListCell<File>>() {
#Override
public ListCell<File> call(ListView<File>()) {
final Button button = new Button();
return new ListCell<File>() {
#Override
public void updateItem(final File item, boolean empty) {
super.updateItem(item, empty);
if (empty) {
setGraphic(null);
} else {
button.setText(item.getName());
button.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
// handle action.
// You can access the File object item here if needed
}
});
setGraphic(button);
}
}
};
});
});
I want to ask about finding a location using the action bar. I've made the program as shown below :
I've made a class to find location. but at the time I called into the EditText search, class does not work.
// An AsyncTask class for accessing the GeoCoding Web Service
private class GeocoderTask extends AsyncTask<String, Void, List<Address>>{
#Override
protected List<Address> doInBackground(String... locationName) {
// Creating an instance of Geocoder class
Geocoder geocoder = new Geocoder(getBaseContext());
List<Address> addresses = null;
try {
// Getting a maximum of 3 Address that matches the input text
addresses = geocoder.getFromLocationName(locationName[0], 3);
} catch (IOException e) {
e.printStackTrace();
}
return addresses;
}
}
protected void onPostExecute(List<Address> addresses) {
if(addresses==null || addresses.size()==0){
Toast.makeText(getBaseContext(), "No Location found", Toast.LENGTH_SHORT).show();
}
// Clears all the existing markers on the map
map.clear();
// Adding Markers on Google Map for each matching address
for(int i=0;i<addresses.size();i++){
Address address = (Address) addresses.get(i);
// Creating an instance of GeoPoint, to display in Google Map
latLng = new LatLng(address.getLatitude(), address.getLongitude());
String addressText = String.format("%s, %s",
address.getMaxAddressLineIndex() > 0 ? address.getAddressLine(0) : "",
address.getCountryName());
markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title(addressText);
map.addMarker(markerOptions);
// Locate the first location
if(i==0)
map.animateCamera(CameraUpdateFactory.newLatLngZoom(latLng,10));
}
}
and I had to call the class to the class action bar menu. like this:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.cost_direction, menu);
/** Get the action view of the menu item whose id is search */
View v = (View) menu.findItem(R.id.search).getActionView();
/** Get the edit text from the action view */
EditText txtSearch = ( EditText ) v.findViewById(R.id.txt_search);
/** Setting an action listener */
txtSearch.setOnEditorActionListener(new OnEditorActionListener() {
#Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
// Getting user input location
String location = v.getText().toString();
if(location!=null && !location.equals("")){
new GeocoderTask().execute(location);
}
Toast.makeText(getBaseContext(), "Search : " + v.getText(), Toast.LENGTH_SHORT).show();
return false;
}
});
return super.onCreateOptionsMenu(menu);
}
please help for those who know about the problems I was having. :)
String strPlace = etSearch.getText().toString();
Geocoder gc = new Geocoder(getBaseContext(), Locale.getDefault());
List<Address> adrs = null;
try{
adrs = gc.getFromLocationName(strPlace,5);
}catch(IOException e){
}finally{
if (adrs != null){
if(adrs.size() > 0)
{
LatLng loc = new LatLng(adrs.get(0).getLatitude(), adrs.get(0).getLongitude());
map.moveCamera(CameraUpdateFactory.newLatLngZoom(loc, 15));
// Zoom in, animating the camera.
map.animateCamera(CameraUpdateFactory.zoomTo(13), 2000, null);
}
In my J2ME app, I have some forms, and some threads running on background. If in any of these threads I decide to display a message box or notification bar on top of the app, I have the problem of not knowing in which form I am, therefore I don't know which form to show after the messagebox or notification bar is hidden.
Does anyone have any suggestions?
You can get current form that is already displaying with "Display.getCurrent()".For example this canvas is a SplashScreen that get current form before displays in the screen:
import javax.microedition.lcdui.Canvas;
/* */ import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
/* */ import javax.microedition.lcdui.Graphics;
/* */ import javax.microedition.lcdui.Image;
public class StaticSplashScreen extends Canvas
implements Runnable {
private HelloMIDlet mainMidlet;
private boolean isSplashOver;
private long currentTime;
private long previousTime;
private Form currentForm;
public StaticSplashScreen(HelloMIDlet mid) {
this.mainMidlet = mid;
currentForm = (Form) this.mainMidlet.getDisplay().getCurrent();
this.previousTime = System.currentTimeMillis();
new Thread(this).start();
}
protected void paint(Graphics g) {
g.setColor(255, 255, 255);
g.fillRect(0, 0, getWidth(), getHeight());
g.setColor(0, 0, 0);
g.drawString("In the name of God", 40, 70, 0);
}
public void run() {
while (!this.isSplashOver) {
this.currentTime = System.currentTimeMillis();
if (this.currentTime - this.previousTime >= 10000L) {
this.isSplashOver = true;
}
}
this.mainMidlet.getDisplay().setCurrent(currentForm);
}
}
In this midlet you can see two forms with some commands.When you press "help" in each form,method() calls and SplashScreen diplays and after 10 seconds you can see the form that launched it again:
public class HelloMIDlet extends MIDlet implements CommandListener {
...
public void commandAction (Command command, Displayable displayable) {
...
if (command == helpCommand) {
method ();
}
...
}
public Form getForm () {
if (form == null) {
form = new Form ("Welcome");
form.addCommand (getHelpCommand());
form.setCommandListener (this);
}
return form;
}
public void method () {
if (true) {
StaticSplashScreen sss = new StaticSplashScreen(this);
this.getDisplay().setCurrent(sss);
} else {
}
}
public Form getForm1 () {
if (form1 == null) {
form1 = new Form ("form1");
form1.addCommand (getHelpCommand ());
form1.setCommandListener (this);
}
return form1;
}
}
A ticker is an object that provides scrolling text across the top of the display. A Ticker is associated with the display, not with the screen. You place a Ticker on a screen using the Screen.setTicker(Ticker t) method, as shown in the code below.
You can associate the same Ticker object with multiple screens, however. The implementation renders the Ticker on some constant portion of the display, in this case at the top of the display. Ticker is not an Item. Its derivation directly from java.lang.Object gives you a clue as to why a Ticker can be tied to the display and not to a screen. It doesn't need to be derived from Item, because it really is not something that is placed in a Form.
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Ticker;
import javax.microedition.lcdui.Form;
/**
This class demonstrates use of the Ticker MIDP UI
component class.
#see javax.microedition.lcdui.Gauge
*/
public class TickerDemo extends Form
implements CommandListener
{
private String str =
"This text keeps scrolling until the demo stops...";
private Ticker ticker = new Ticker(str);
private Command back = new Command("Back", Command.BACK, 1);
private static Displayable instance;
/**
Constructor.
*/
public TickerDemo()
{
super("Ticker demo");
instance = this;
addCommand(back);
setTicker(ticker);
setCommandListener(this);
}
...
}
Hope this will help you. Thanks
I want to show the virtual keyboard when the user is editing the textfield. I take this approach :
public class ChpModif extends TextField {
public ChpModif(int maxChars, FocusListener focusListener, DataChangedListener dataChangeListener, VirtualKeyboard vkb)
{
super();
setReplaceMenu(false);
if (maxChars != -1)
setMaxSize(maxChars);
addFocusListener(focusListener);
addDataChangeListener(dataChangeListener);
if (vkb != null)
VirtualKeyboard.bindVirtualKeyboard(this, vkb);
}
protected Command installCommands(Command clear, Command t9)
{
return null;
}
}
public class ModifierFicheClient extends Ecran implements ActionListener, DataChangedListener, FocusListener
{
private VirtualKeyboard vkNombre = new VirtualKeyboard();
private String textFieldStatus, listBoxStatus;
private ListBox genretxt;
private boolean modifFromUpdate;
private ChpModif nomtxt,prenomtxt,cintxt,adressetxt/*,genretxt*/,lieutxt,professiontxt,courieltxt,teltxt,datenaisstxt;
private Component cursorItem;
...
public ModifierFicheClient(SmartPhoneBanking controller,String prosp_id,int recordStoreID,Form prevForm)
{
super("");
vkNombre.setInputModeOrder(new String[]{VirtualKeyboard.NUMBERS_SYMBOLS_MODE});
...
modifFromUpdate = false;
cintxt = new ChpModif(12, this, this, vkNombre);
...
}
public void dataChanged(int type, int index) {
textFieldStatus = "CHANGED";
if (!modifFromUpdate)
{
try
{
if (type == DataChangedListener.ADDED || type == DataChangedListener.CHANGED || type == DataChangedListener.REMOVED)
{
if (Display.getInstance().isVirtualKeyboardShowingSupported())
{
if (!Display.getInstance().isVirtualKeyboardShowing())
cursorItem.pointerReleased(cursorItem.getAbsoluteX(), cursorItem.getAbsoluteY());
}
}
}
catch (ClassCastException cce)
{}
}
}
public void focusGained(Component chp) {
cursorItem = chp;
}
public void focusLost(Component arg0) {
}
protected void onShowCompleted()
{
...
update();
}
public void update()
{
modifFromUpdate = true;
cintxt.setText(fichesignalitique.elementAt(0).toString());
...
modifFromUpdate = false;
}
...
}
The problem is that at the first time when I edit the textfield then the virtualkeyboard is shown ; then I click the Ok button of the virtualkeyboard , and then I edit again the textfield. But in this time the virtualkeyboard is not shown !
So how to make the virtualkeyboard shown everytime I edit the textfield ?
Its entirely possible that this is a 1.4 bug that was fixed in 1.5 since I can't see it right now. The VKB was brand new in 1.4 .