i want to know how determine the state of the GPS, soo if the state is different to AVAILABLE i don't create the Listener to save battery.
But in execution always enter for the else create the LocationListener and not for the if.
Here is my code
public class UpdateGPS extends Thread{
public void run(){
while (true){
try{
getGPS();
sleep(30000); //Update GPS for each 30secs
}
catch(Exception e){}
}
}
}
public void getGPS() {
String state = "RUNNING";
BlackBerryCriteria myCriteria = new BlackBerryCriteria(GPSInfo.GPS_MODE_ASSIST);
try {
locationProvider = LocationProvider.getInstance(myCriteria);
if (locationProvider != null) {
if (locationProvider.getState() != locationProvider.AVAILABLE) {
state= "STOP";
}
else {
locationProvider.setLocationListener(
new LocationListenerImplementacion(),valor_reintento, -1, -1);
}
}
}
catch(Exception e) {}
}
private class LocationListenerImplementacion implements LocationListener {
public void locationUpdated(LocationProvider provider,Location location) {
if (location.isValid()) {
//GET DATA
}
else {}
public void providerStateChanged(LocationProvider provider, int newState){
}
}
Related
I have written the following code to find the location in blackberry but sometimes I am getting invalid location instance. What value should be passed to location listener to get location continuously?
package com.sims.sendlocation;
/**
*
* #author PramodKumarVishwakarma
*
*/
import java.util.Calendar;
import java.util.TimerTask;
import javax.microedition.location.Criteria;
import javax.microedition.location.Location;
import javax.microedition.location.LocationListener;
import javax.microedition.location.LocationProvider;
import com.sims.commonmethods.Constants;
import com.sims.datahandler.GPRSHandler;
import com.sims.rms.RMSHandler;
public class LocationTimerTask extends TimerTask implements LocationListener {
private String locationStr;
private LocationProvider provider;
private String exception;
public void run()
{
try
{
Criteria criteria = new Criteria();
criteria.setCostAllowed(false);
//criteria.setPreferredPowerConsumption(Criteria.POWER_USAGE_LOW);
provider = LocationProvider.getInstance(criteria);
provider.setLocationListener(this, -1, -1, -1);
}
catch (Exception e)
{
RMSHandler.addDataValues(Constants.CURRENT_LOCATION,"Provider Initialization: " + e.getMessage());
System.out.println("***********"+e);
}
if (checkTimeToSendMail())
startRequestThread();
}
public boolean cancel() {
return false;
}
private void startRequestThread()
{
final GPRSHandler gprs = new GPRSHandler();
Thread thread = new Thread() {
public void run() {
try {
sleep(Constants.MINUTE * Constants.LOC_THREAD_WAIT);
{
FindLocationReceiver location = new FindLocationReceiver();
location.sendOrderToServer(RMSHandler.getDataValues(Constants.IP_INFO)+ gprs.updateConnectionSuffix().trim());
}
} catch (InterruptedException e)
{
//Dialog.ask(Dialog.D_OK, "startRequestThread: " + e);
}
}
};
thread.start();
}
private boolean checkTimeToSendMail() {
Calendar calendar = Calendar.getInstance();
int hour = calendar.get(Calendar.HOUR);
if (calendar.get(Calendar.AM_PM) == 0) {
if (hour >= Constants.MNG_TIME)
return true;
} else {
if (hour < Constants.EVNG_TIME)
return true;
}
return false;
}
public void locationUpdated(LocationProvider provider, Location location)
{
if (location.isValid())
{
locationStr = location.getQualifiedCoordinates().getLatitude()+ "-" + location.getQualifiedCoordinates().getLongitude();
RMSHandler.addDataValues(Constants.CURRENT_LOCATION, locationStr);
}
else
RMSHandler.addDataValues(Constants.CURRENT_LOCATION,"Not valid Location Provider");
}
public void providerStateChanged(LocationProvider provider, int newState)
{
}
}
Sometimes I am able to get a valid location but other times I am not able to get a valid location. What value should be passed in Listener parameter list?
How to get camera captured images after native camera app exits ?
How to create an Bitmap image from the already existing SD card Jpeg image ?
I want to add this Bitmap to the screen.
ButtonField btn_Take_Pic = new ButtonField("Take a pic",Field.FIELD_HCENTER|FOCUSABLE)
{
protected boolean navigationClick(int status, int time) {
// TODO Auto-generated method stub
InvokeCameraScreen screen = new InvokeCameraScreen(CaptureImage.this);
screen.addCam();
UiApplication.getUiApplication().invokeLater (new Runnable() {
public void run()
{
//Perform screen changes here.
//Calling invalidate() on your screen forces the paint
//method to be called.
CaptureImage deal_Screen = new CaptureImage();
deal_Screen.invalidate();
}
});
return true;
}
};
Add body part of ImagePath() method
public void ImagePath(String path) {
try
{
Img_path = path;
EncodedImage.createEncodedImage(imgarr,0,imgarr.length);
Bitmap setimage = resizeBitmap(getBitmapFromFile(info.getImg_Path()),(int) (ScreenWidth *0.20),(int) (ScreenHeight *0.20));
Img_Field.setBitmap(setimage);
}
catch (Exception e) {
// TODO: handle exception
Dialog.alert("Ex path: " + e.toString());
}
}
implements ImagePath interface
public interface ImagePath {
public void ImagePath(String path);
}
public class InvokeCameraScreen implements FileSystemJournalListener {
private long lastUSN;
private String resultData, imagepath;
private VerticalFieldManager addToSCreen;
private boolean isAlreadeyExcuted = true;
private byte[] imageData;
private ImagePath pathImage;
public InvokeCameraScreen(ImagePath path) {
this.pathImage = path;
}
public void addCam() {
isAlreadeyExcuted = true;
getAddToSCreen().deleteAll();
startCam();
}
private void startCam() {
lastUSN = FileSystemJournal.getNextUSN();
UiApplication.getUiApplication().addFileSystemJournalListener(this);
try {
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
Invoke.invokeApplication(Invoke.APP_TYPE_CAMERA,
new CameraArguments());
}
});
} catch (Exception e) {
System.out.println("CheckinFormScreen Exception: " + e.toString());
}
}
private void closeCamera() {
System.out.println("Closing Cam");
EventInjector.KeyEvent inject = new EventInjector.KeyEvent(
EventInjector.KeyEvent.KEY_DOWN, Characters.ESCAPE, 0, 25);
inject.post();
try {
Thread.sleep(500);
} catch (Exception e) {
}
UiApplication.getUiApplication().removeFileSystemJournalListener(this);
System.out.println("Done with closing cam");
}
public byte[] getImageData() {
return imageData;
}
public void setImageData(byte[] imageData) {
this.imageData = imageData;
}
public String getImagepath() {
return imagepath;
}
public void setImagepath(String imagepath) {
this.imagepath = imagepath;
}
public void fileJournalChanged() {
try {
closeCamera();
} catch (Exception e) {
}
long USN = FileSystemJournal.getNextUSN();
for (long i = USN - 1; i >= lastUSN && i < USN; --i) {
FileSystemJournalEntry entry = FileSystemJournal.getEntry(i);
if (entry == null) {
break;
}
if (entry.getEvent() == FileSystemJournalEntry.FILE_ADDED) {
String path = entry.getPath();
if (path != null && path.indexOf(".jpg") != -1) {
if (isAlreadeyExcuted) {
isAlreadeyExcuted = false;
resultData = "file://" + path;
pathImage.ImagePath(resultData);
// ShowUploadImage(resultData);
EventInjector.KeyEvent inject = new EventInjector.KeyEvent(
EventInjector.KeyEvent.KEY_DOWN,
Characters.ESCAPE, 0, 25);
inject.post();
inject.post();
if (Display.getWidth() == 480
&& Display.getHeight() == 360
|| Display.getWidth() == 360
&& Display.getHeight() == 480) {
try {
Thread.sleep(500);
inject.post();
} catch (Exception e) {
}
}
}
}
return;
}
}
}
public VerticalFieldManager getAddToSCreen() {
if (addToSCreen == null) {
addToSCreen = new VerticalFieldManager();
addToSCreen.setPadding(10, 10, 10, 10);
}
return addToSCreen;
}
public void setAddToSCreen(VerticalFieldManager addToSCreen) {
this.addToSCreen = addToSCreen;
}
private void ShowUploadImage(String path) {
}
}
try this,
CAll Below Class Like:
EncodedImage result = NcCamera.getInstance().getPictureTaken();
//
This is class in which you can get Camera images.
import java.io.OutputStream;
import javax.microedition.io.Connector;
import javax.microedition.io.file.FileConnection;
import javax.microedition.media.Manager;
import javax.microedition.media.Player;
import javax.microedition.media.control.VideoControl;
import net.rim.device.api.system.Bitmap;
import net.rim.device.api.system.EncodedImage;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.Graphics;
import net.rim.device.api.ui.Screen;
import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.ui.container.VerticalFieldManager;
public class NcCamera extends MainScreen
{
private VideoControl videoControl;
private Field videoField;
public static EncodedImage pictureTaken = null;
private boolean initialized = false;
private boolean result;
public static boolean CAPTURING_DONE = true;
public static boolean CAPTURING_CANCELED = false;
private VerticalFieldManager main;
private static NcCamera instance;
CommonFunction cmn_fun;
public static byte[] raw;
public NcCamera()
{
super(NO_VERTICAL_SCROLL);
main = new VerticalFieldManager(USE_ALL_WIDTH | USE_ALL_HEIGHT)
{
// I wan't to force the backgound to black
public void paintBackground(Graphics g)
{
g.setBackgroundColor(0x000000);
g.clear();
}
};
super.add(main);
}
public void add(Field field)
{
main.add(field);
}
public EncodedImage getPictureTaken()
{
return pictureTaken;
}
public Screen getThisScreen()
{
return this;
}
public void reset()
{
pictureTaken = null;
result = CAPTURING_CANCELED;
}
public boolean showDialog()
{
result = CAPTURING_CANCELED;
UiApplication.getUiApplication().invokeAndWait(new Runnable()
{
public void run()
{
UiApplication.getUiApplication().pushModalScreen(getThisScreen());
if (pictureTaken != null)
result = CAPTURING_DONE;
}
});
return result;
}
public static NcCamera getInstance()
{
if (instance == null)
instance = new NcCamera();
return instance;
}
public void onDisplay() {
if (!initialized)
{
initializeCamera();
if (videoField!=null) add(videoField);
else {
LabelField sorry = new LabelField("Sorry, we cannot use camera right now.") {
// I need to force the label to be white colored to be visible above
// it's underlying manager (that is black).
public void paint(Graphics g) {
int color = g.getColor();
g.setColor(0xffffff);
super.paint(g);
g.setColor(color);
}
};
add(sorry);
}
initialized = true;
}
}
private void initializeCamera()
{
try {
// Create a player for the Blackberry's camera
Player player = Manager.createPlayer("capture://video?encoding=jpeg&width=1024&height=768");
// Set the player to the REALIZED state (see Player javadoc)
player.realize();
videoControl = (VideoControl) player.getControl("VideoControl");
if (videoControl != null)
{
videoField = (Field) videoControl.initDisplayMode(
VideoControl.USE_GUI_PRIMITIVE,
"net.rim.device.api.ui.Field");
videoControl.setDisplayFullScreen(true);
videoControl.setVisible(true);
}
player.start();
} catch (Exception e)
{
}
}
protected boolean invokeAction(int action)
{
boolean handled = super.invokeAction(action);
if (!handled)
{
switch (action)
{
case ACTION_INVOKE: // Trackball click
{
takePicture();
return true;
}
}
}
return handled;
}
public void takePicture()
{
try {
// Retrieve the raw image from the VideoControl and
// create a screen to display the image to the user.
raw = videoControl.getSnapshot(null);
// SaveImageSdcard(raw);
Bitmap img= Bitmap.createBitmapFromBytes(raw, 0, raw.length,3);
Constants.PICTURE_TAKEN=cmn_fun.resizeBitmap(img, 150, 150);
// save the picture taken into pictureTaken variable
pictureTaken = EncodedImage.createEncodedImage(raw, 0, raw.length);
result = CAPTURING_DONE;
close();
} catch (Exception e)
{
}
}
}
public boolean keyDown(int keycode,
int time) {
if (keycode == 1769472)
{ // escape pressed
reset();
close();
return true;
}
return super.keyDown(keycode, time);
}
}
I am developing an app which has GPS functionality. How can I get latitude and longitude of the current location.
I found a solution by myself. The following code works fine for me:
package mypackage;
import javax.microedition.location.Location;
import javax.microedition.location.LocationException;
import javax.microedition.location.LocationListener;
import javax.microedition.location.LocationProvider;
import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.component.Dialog;
import net.rim.device.api.ui.component.RichTextField;
import net.rim.device.api.ui.container.MainScreen;
public final class MyScreen extends MainScreen
{
private LocationProvider locationProvider;
private static int interval = 1;
double lat;
double longt;
public MyScreen()
{
setTitle("MyTitle");
startLocationUpdate();
}
private boolean startLocationUpdate()
{
boolean retval = false;
try
{
locationProvider = LocationProvider.getInstance(null);
if ( locationProvider == null )
{
Runnable showGpsUnsupportedDialog = new Runnable()
{
public void run()
{
Dialog.alert("GPS is not supported on this platform, exiting...");
//System.exit( 1 );
}
};
UiApplication.getUiApplication().invokeAndWait( showGpsUnsupportedDialog ); // Ask event-dispatcher thread to display dialog ASAP.
}
else
{
locationProvider.setLocationListener(new LocationListenerImpl(), interval, 1, 1);
retval = true;
}
}
catch (LocationException le)
{
System.err.println("Failed to instantiate the LocationProvider object, exiting...");
System.err.println(le);
System.exit(0);
}
return retval;
}
private class LocationListenerImpl implements LocationListener
{
public void locationUpdated(LocationProvider provider, Location location)
{
if(location.isValid())
{
double longitude = location.getQualifiedCoordinates().getLongitude();
double latitude = location.getQualifiedCoordinates().getLatitude();
updateLocationScreen(latitude, longitude);
}
}
public void providerStateChanged(LocationProvider provider, int newState)
{
}
}
private void updateLocationScreen(final double latitude, final double longitude)
{
UiApplication.getUiApplication().invokeAndWait(new Runnable()
{
public void run()
{
lat = latitude;
longt = longitude;
RichTextField txt=new RichTextField();
txt.setText("Long=="+longt);
RichTextField txt1=new RichTextField();
txt1.setText("lat=="+lat);
add(txt);
add(txt1);
//persistentLatitude.setContents(Double.toString(latitude));
//persistentLongitude.setContents(Double.toString(longitude));
}
});
}
}
If you need to get the current location fast, then use the following code. It works for OS 6 and higher:
private void findGeolocation() {
Thread geolocThread = new Thread() {
public void run() {
try {
if (!LocationInfo.isLocationOn()) {
LocationInfo.setLocationOn();
}
BlackBerryCriteria myCriteria = new BlackBerryCriteria();
myCriteria
.enableGeolocationWithGPS(BlackBerryCriteria.FASTEST_FIX_PREFERRED);
try {
BlackBerryLocationProvider myProvider = (BlackBerryLocationProvider) LocationProvider
.getInstance(myCriteria);
try {
BlackBerryLocation myLocation = (BlackBerryLocation) myProvider
.getLocation(-1);
_longitude = myLocation.getQualifiedCoordinates()
.getLongitude();
_latitude = myLocation.getQualifiedCoordinates()
.getLatitude();
showResults(_latitude, _longitude);
} catch (InterruptedException e) {
showException(e);
} catch (LocationException e) {
showException(e);
}
} catch (LocationException e) {
showException(e);
} catch (Exception e) {
showException(e);
}
} catch (UnsupportedOperationException e) {
showException(e);
} catch (Exception e) {
showException(e);
}
}
};
geolocThread.start();
}
private void showResults(double _latitude, double _longitude) {
System.out.println("latitude = " + _latitude + "longitude" + _longitude );
Application.getApplication().invokeLater(new Runnable() {
public void run() {
Dialog.alert("latitude = " + _latitude + "longitude" + _longitude );
}
});
}
private void showException(final Exception e) {
Application.getApplication().invokeLater(new Runnable() {
public void run() {
Dialog.alert(e.getMessage());
}
});
}
I am developing a Blackberry Application. I have a map in a screen. I want to refresh map's data with new data which i am getting from my web service. I am using BlockingSenderDestination in a Thread. When i request "get data" its return new data. no problem. I am using invokelater function to call my maprefresh function with passing arguments but i got illegalargumentexception.
Any suggestion to solve my problem or any better way to do this?
Here is my code:
public class MyMainScreen extends MainScreen {
RichMapField map;
MyClassList _myclassList;
private String _result2t;
public MyMainScreen(JSONArray jarray)
{
map = MapFactory.getInstance().generateRichMapField();
MapDataModel mapDataModel = map.getModel();
JSONObject json = null;
boolean getdata=false;
for (int i=0;i<jarray.length();i++)
{
try
{
json=jarray.getJSONObject(i);
getdata=true;
}
catch(Exception e)
{
}
if(getdata)
{
try
{
double lat = Double.valueOf(json.getString("LATITUDE")).doubleValue();
double lng = Double.valueOf(json.getString("LONGITUDE")).doubleValue();
String myclassdata= json.getString("myclassdata").toString();
MyClass ben = new MyClass(myclassdata);
_myclassList.addElement(ben);
MapLocation termimapitem = new MapLocation( lat, lng, "","");
mapDataModel.add((Mappable)termimapitem,"1");
}
catch(Exception e)
{
//mesajGoster("Hatalı Veri");
}
}
else
{
//mesajGoster("Listeye Eklenemedi");
}
}
}
private void GetTerminals(String companyNo){
final String companyNoR= companyNo;
Thread t = new Thread(new Runnable()
{
public void run()
{
Message response = null;
String uriStr = "http://webservice";
BlockingSenderDestination bsd = null;
try
{
bsd = (BlockingSenderDestination)
DestinationFactory.getSenderDestination
("o", URI.create(uriStr));
if(bsd == null)
{
bsd =
DestinationFactory.createBlockingSenderDestination
(new Context("o"),
URI.create(uriStr)
);
}
response = bsd.sendReceive();
if(response != null)
{
BSDResponse(response,companyNoR);
}
}
catch(Exception e)
{
}
finally
{
if(bsd != null)
{
bsd.release();
}
}
}
});
t.start();
}
private void BSDResponse(Message msg,final String companyNo)
{
if (msg instanceof ByteMessage)
{
ByteMessage reply = (ByteMessage) msg;
_result2t = (String) reply.getStringPayload();
} else if(msg instanceof StreamMessage)
{
StreamMessage reply = (StreamMessage) msg;
InputStream is = reply.getStreamPayload();
byte[] data = null;
try {
data = net.rim.device.api.io.IOUtilities.streamToBytes(is);
} catch (IOException e) {
// process the error
}
if(data != null)
{
_result2t = new String(data);
}
}
try {
final JSONArray jarray= new JSONArray(_result2t);
final String username=_userName;
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
Dialog.alert("The Toolbar i");
Yenile(jarray);
}
});
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void Yenile(JSONArray jarray){
MapDataModel mapDataModel = map.getModel();
mapDataModel.remove("1");
map.getMapField().update(true);
_terminalList = new TerminalList();
map= MapFactory.getInstance().generateRichMapField();
MapDataModel mapDataModel = map.getModel();
JSONObject json = null;
boolean getdata=false;
for (int i=0;i<jarray.length();i++)
{
try
{
json=jarray_terminaller.getJSONObject(i);
getdata=true;
}
catch(Exception e)
{
}
if(getdata)
{
try
{
double lat = Double.valueOf(json.getString("LATITUDE")).doubleValue();
double lng = Double.valueOf(json.getString("LONGITUDE")).doubleValue();
String myclassdata= json.getString("myclassdata").toString();
MyClass ben = new MyClass(myclassdata);
_myclassList.addElement(ben);
MapLocation termimapitem = new MapLocation( lat, lng, "","");
mapDataModel.add((Mappable)termimapitem,"1");
}
catch(Exception e)
{
//mesajGoster("Hatalı Veri");
}
}
else
{
//mesajGoster("Listeye Eklenemedi");
}
}
}
}
To refresh the screen: do like this:
public class LoadingScreen extends MainScreen{
LoadingScreen()
{
createGUI();
}
public void createGUI()
{
//Here you write the code that display on screen;
}}
we know that this is the actual way of creating a screen;
Now if you want to refresh the screen write like below:
deleteAll();
invalidate();
createGUI();//here it creates the screen with new data.
Instead of writing in InvokeLater method better to write the above three lines in run method after Thread.sleep(10000);
If you have any doubts come on stackOverFlow chat room name "Life for Blackberry" for clarify your and our doubts.
I found a solution to my question.
After getting the data i was sending it via new run method:
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
MyFunction(jarray);
}});
But i was need to synchronize with main thread. So the solution:
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
synchronized(Application.getEventLock()) {
Yenile(jarray);
}
}
});
i am developing an application that use some images. We require some text print on image but that is not a fixed mean when change the variable value automatically change the text. Simply we say that we print a variable on image?
try this
public class Test extends UiApplication {
public static void main(String[] arg) {
Test app = new Test();
app.enterEventDispatcher();
}
public Test() {
MyScreen screen = new MyScreen();
pushScreen(screen);
}
}
class MyScreen extends MainScreen {
LabelField label;
public MyScreen() {
label = new LabelField() {
protected void paint(Graphics g) {
Bitmap bitmap = Bitmap.getBitmapResource("bgimage.jpg");
g.drawBitmap(0, 0, getWidth(), getHeight(), bitmap, 0, 0);
super.paint(g);
}
};
ButtonField button = new ButtonField("update") {
protected void fieldChangeNotify(int context) {
update();
super.fieldChangeNotify(context);
}
};
add(label);
add(button);
}
public void setMessage(String message) {
synchronized (UiApplication.getEventLock()) {
label.setText(message);
}
}
private void update() {
LocationHandler handler = new LocationHandler(this);
handler.start();
}
}
class LocationHandler extends Thread {
private MyScreen screen;
public LocationHandler(MyScreen screen) {
this.screen = screen;
}
public void run() {
Criteria criteria = new Criteria();
criteria.setVerticalAccuracy(50);
criteria.setHorizontalAccuracy(50);
criteria.setCostAllowed(true);
criteria.setPreferredPowerConsumption(Criteria.POWER_USAGE_HIGH);
try {
LocationProvider provider = LocationProvider.getInstance(criteria);
Location location = provider.getLocation(-1);
String speed = location.getSpeed() + "m/s";
screen.setMessage(speed);
} catch (LocationException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}