I am working on a j2me application which contain a class to find the location of mobile using GPS.I need to include gauge while the location provider API is called and it finds the location.I am new to j2me so still not clear with all the concepts.I am pasting my code below.Please help me through this.Thanks in advance..
package org.ets.utils;
import javax.microedition.lcdui.*;
import javax.microedition.location.*;
import javax.microedition.io.*;
import java.io.*;
import org.ets.midlet.ETS_infozech;
import javax.microedition.midlet.*;
public class Locfinder {
public Locfinder(ETS_infozech midlet)
{
this.midlet = midlet;
}
public static String ex()
{
try {
checkLocation();
} catch (Exception ex)
{
ex.printStackTrace();
}
//System.out.println(string);
return string;
}
public static void checkLocation() throws Exception
{
Location l;
LocationProvider lp;
Coordinates c;
// Set criteria for selecting a location provider:
// accurate to 500 meters horizontally
Criteria cr= new Criteria();
cr.setHorizontalAccuracy(500);
// Get an instance of the provider
lp= LocationProvider.getInstance(cr);
//Request the location, setting a one-minute timeout
l = lp.getLocation(60);
c = l.getQualifiedCoordinates();
if(c != null ) {
// Use coordinate information
double lat = c.getLatitude();
double lon = c.getLongitude();
string = " LAT-" + lat + " LONG-" + lon;
}
}
}
There's no way you can link a Gauge to some task.
You have to set values to the Gauge manually. So you'd create a Gauge and add it to your Form. Then start your code to perform the look-up.
In between your lines of code, you'd add myGauge.setValue(some_value); to increase the indicator.
Of course, this becomes difficult when most of the task is contained in a single line of code, like e.g. lp.getLocation(60);.
I think, in that case, I would create a Thread that automatically increases the value on the Gauge in the 60 seconds, but can be stopped/overridden by a manual setting.
class Autoincrementer implements Runnable {
private boolean running;
private Gauge gauge;
private int seconds;
private int secondsElapsed;
public Autoincrementer(Gauge gauge) {
this.gauge = gauge;
this.seconds = gauge.getMaxValue();
this.running = true;
this.secondsElapsed = 0;
}
public void run() {
if (running) {
secondsElapsed++;
gauge.setValue(secondsElapsed);
if (secondsElapsed>=gauge.getMaxValue()) running = false; // Stop the auto incrementing
try {
Thread.sleep(1000); // Sleep for 1 second
} catch (Exception e) {}
}
}
public void stop() {
running = false;
}
}
You would then create a Gauge and add it to your Form
myGauge = new Gauge("Process", false, 60, 0);
myForm.append(myGauge);
Then start the auto-increment.
myIncrementer = new Autoincrementer(myGauge);
new Thread(myIncrementer).start();
And then call your look-up code.
checkLocation();
Inside your look-up code, add code to stop the auto-incrementing and set the Gauge object to 100%, if the look-up was successful (meaning before the timeout).
myIncrementer.stop();
myGauge.setValue(60);
LWUIT 1.5 can help you in this. Am not sure for Location API which you are using.
But you will get Gauge using LWUIT 1.5. Use Lwuit instead of LCDUI.
http://www.oracle.com/technetwork/java/javame/javamobile/download/lwuit/index.html
Related
I'm trying to make Solr search phone numbers which are stored like this +79876543210 using a query like these:
+79876543210
79876543210
89876543210 <-- '+7' is replaced with region specific code '8'
9876543210 <-- '+7' entirely removed
This is just an example. Another one is wired line phone numbers:
+78662123456 <-- '+78662' is a specific region code
78662123456
88662123456
8662123456
123456 <-- region code entirely removed
One way I could manage this is using a separate field which is filled with these variants and used solely during search.
But this has issues with highlighting (it returns <em>123456</em> to be highlighted whereas the real value shown to user is +78662123456).
I thought that maybe it's best to make these indices using just Solr, but how?
First thought was to use managed synonyms filter and pass them along with each added record. But the docs explicitly states:
Changes made to managed resources via this REST API are not applied to the active Solr components until the Solr collection (or Solr core in single server mode) is reloaded.
So reloading a core every time after adding a record is not the way to go.
Other issues involve keeping these synonyms up to date with records.
Could there be another way to solve this?
Thanks to this comment (by MatsLindh) I've managed to assemble a simple filter based on bult-in EdgeNGramTokenFilter:
package com.step4;
import org.apache.lucene.analysis.TokenFilter;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
import org.apache.lucene.analysis.tokenattributes.PositionIncrementAttribute;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class ReverseCustomFilter extends TokenFilter {
private static final PatternReplacementPair[] phonePatterns = {
new PatternReplacementPair("\\+7", "7"),
new PatternReplacementPair("\\+7", "8"),
new PatternReplacementPair("\\+7", ""),
new PatternReplacementPair("\\+78662", ""),
new PatternReplacementPair("\\+78663", ""),
};
private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
private final PositionIncrementAttribute posIncrAtt = addAttribute(PositionIncrementAttribute.class);
private int curPatternIndex;
private int curPosIncr;
private State curState;
public ReverseCustomFilter(TokenStream input) {
super(input);
}
#Override
public final boolean incrementToken() throws IOException {
while (true) {
if (curPatternIndex == 0) {
if (!input.incrementToken()) {
return false;
}
curState = captureState();
curPosIncr += posIncrAtt.getPositionIncrement();
curPatternIndex = 1;
}
if (curPatternIndex <= phonePatterns.length) {
PatternReplacementPair replacementPair = phonePatterns[curPatternIndex - 1];
curPatternIndex++;
restoreState(curState);
Matcher matcher = replacementPair.getPattern().matcher(termAtt);
if (matcher.find()) {
posIncrAtt.setPositionIncrement(curPosIncr);
curPosIncr = 0;
String replaced = matcher.replaceFirst(replacementPair.getReplacement());
termAtt.setEmpty().append(replaced);
return true;
}
}
else {
restoreState(curState);
posIncrAtt.setPositionIncrement(0);
curPatternIndex = 0;
return true;
}
}
}
#Override
public void reset() throws IOException {
super.reset();
curPatternIndex = 0;
curPosIncr = 0;
}
#Override
public void end() throws IOException {
super.end();
posIncrAtt.setPositionIncrement(curPosIncr);
}
private static class PatternReplacementPair {
private final Pattern pattern;
private final String replacement;
public PatternReplacementPair(String pattern, String replacement) {
this.pattern = Pattern.compile(pattern);
this.replacement = replacement;
}
public Pattern getPattern() {
return pattern;
}
public String getReplacement() {
return replacement;
}
}
}
I am solving a tough problem in OptaPlanner. The best algorithm I found so far is to use a custom move factory, a computationally intensive one. After noticing that I was utilising a single CPU core, I discovered that OptaPlanner only spreads on multiple threads the score calculation, while it performs the move generation in a single thread.
To mitigate the problem, I implemented the multi-threading in my move factory via the following abstract class, which I then extend with the actual logic (I did this because I actually have three computationally expensive custom move factories):
package my.solver.move;
import lombok.AllArgsConstructor;
import lombok.NonNull;
import org.optaplanner.core.impl.domain.solution.descriptor.SolutionDescriptor;
import org.optaplanner.core.impl.heuristic.move.CompositeMove;
import org.optaplanner.core.impl.heuristic.move.Move;
import org.optaplanner.core.impl.heuristic.selector.move.factory.MoveIteratorFactory;
import org.optaplanner.core.impl.score.director.ScoreDirector;
import java.util.Iterator;
import java.util.Objects;
import java.util.Random;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.Function;
public abstract class MultiThreadedMoveFactory<T> implements MoveIteratorFactory<T> {
private final ThreadPoolExecutor threadPoolExecutor;
public MultiThreadedMoveFactory(
#NonNull String threadPrefix
) {
int availableProcessorCount = Runtime.getRuntime().availableProcessors();
int resolvedThreadCount = Math.max(1, availableProcessorCount);
ThreadFactory threadFactory = new SolverThreadFactory(threadPrefix);
threadPoolExecutor = (ThreadPoolExecutor) Executors.newFixedThreadPool(resolvedThreadCount, threadFactory);
}
#AllArgsConstructor
public class MoveGeneratorData {
T solution;
SolutionDescriptor<T> solutionDescriptor;
Random random;
BlockingQueue<Move<T>> generatedMoves;
}
protected abstract int getNumMoves();
#Override
public long getSize(ScoreDirector<T> scoreDirector) {
return getNumMoves();
}
protected class MovesIterator implements Iterator<Move<T>> {
private final BlockingQueue<Move<T>> generatedMoves = new ArrayBlockingQueue<>(getNumMoves());
public MovesIterator(
#NonNull T solution,
#NonNull SolutionDescriptor<T> solutionDescriptor,
#NonNull Random random,
#NonNull Function<MoveGeneratorData, Runnable> moveGeneratorFactory
) {
MoveGeneratorData moveGeneratorData = new MoveGeneratorData(solution, solutionDescriptor, random, generatedMoves);
for (int i = 0; i < getNumMoves(); i++) {
threadPoolExecutor.submit(moveGeneratorFactory.apply(moveGeneratorData));
}
}
#Override
public boolean hasNext() {
if (!generatedMoves.isEmpty()) {
return true;
}
while (threadPoolExecutor.getActiveCount() > 0) {
try {
//noinspection BusyWait
Thread.sleep(50);
} catch (InterruptedException e) {
return false;
}
}
return !generatedMoves.isEmpty();
}
#Override
public Move<T> next() {
//noinspection unchecked
return Objects.requireNonNullElseGet(generatedMoves.poll(), CompositeMove::new);
}
}
private static final AtomicInteger poolNumber = new AtomicInteger(1);
private static class SolverThreadFactory implements ThreadFactory {
private final ThreadGroup group;
private final AtomicInteger threadNumber = new AtomicInteger(1);
private final String namePrefix;
public SolverThreadFactory(String threadPrefix) {
SecurityManager s = System.getSecurityManager();
group = (s != null) ? s.getThreadGroup() : Thread.currentThread().getThreadGroup();
namePrefix = "MyPool-" + poolNumber.getAndIncrement() + "-" + threadPrefix + "-";
}
#Override
public Thread newThread(#NonNull Runnable r) {
Thread t = new Thread(group, r, namePrefix + threadNumber.getAndIncrement(), 0);
if (t.isDaemon()) {
t.setDaemon(false);
}
if (t.getPriority() != Thread.NORM_PRIORITY) {
t.setPriority(Thread.NORM_PRIORITY);
}
return t;
}
}
#Override
public Iterator<? extends Move<T>> createOriginalMoveIterator(ScoreDirector<T> scoreDirector) {
return createMoveIterator(scoreDirector, new Random());
}
#Override
public Iterator<? extends Move<T>> createRandomMoveIterator(ScoreDirector<T> scoreDirector, Random workingRandom) {
return createMoveIterator(scoreDirector, workingRandom);
}
public abstract Iterator<? extends Move<T>> createMoveIterator(ScoreDirector<T> scoreDirector, Random random);
}
However, the solver seems to hang after a while. The debugger tells me that it's waiting on an innerQueue.take() in OrderByMoveIndexBlockingQueue. This is caused by my move factory: if I revert the above and only use the previous implementation, which was single-threaded, the problem goes away.
I do not quite understand where the problem is, so the question is: how can I fix it?
No, no, no. This approach is doomed. I think. (Prove me wrong.)
JIT selection
First learn about Just In Time selection (see docs) of moves.
Instead of generating all moves (which can be billions) at the beginning of each step, only generate those that will actually be evaluated. Most LS algorithms will only evaluate a few moves per step.
Watch the TRACE log to see how many milliseconds it takes to start a step. Typically you want to do evaluate 10000 moves per second, so it should take 0 or 1 milliseconds to start a step (the log only shows in milliseconds).
Multithreaded solving
Then learn about moveThreadCount to enable multithreaded solving. See this blog post. Know that this still does the move selection on 1 thread, for reproducibility reasons. But the move evaluation is spread across threads.
Caching for move selection
But your custom moves are smart, so the move selection must be smart?
First determine what "solution state" query information you need to generate the moves - for example a Map<Employee, List<Shift>> - then cache that:
either calculate that map at the beginning of each step, if it doesn't take too long (but this won't scale because it doesn't do deltas)
or use a shadow variable (#InverseRelationShadowVariable works fine in this case), because these are updated through deltas. But it does do the delta's for every move and undo move too...
Or hack in an actual new MoveSelector, which can listen to stepEnded() events and actually apply the delta of the last step on that Map, without doing any of the deltas of every move and undo move. We should probably standardize this approach and make it part of our public API some day.
I was able to make the factory work by removing any trace of JIT-ing from hasNext: block the method until all moves have been generated, and only then return true, and keep returning true until all moves have been consumed.
#Override
public boolean hasNext() {
while (!generationComplete && generatedMoves.size() < getNumMoves()) {
try {
// We get a warning because the event we are waiting for could happen earlier than the end of sleep
// and that means we would be wasting time, but that is negligible so we silence it
//noinspection BusyWait
Thread.sleep(50);
} catch (InterruptedException e) {
return false;
}
}
generationComplete = true;
return !generatedMoves.isEmpty();
}
To the best of my understanding, the solution I am using not only works, but it is the best I found in a few months of iterations.
I need to create an action in my custom business process that must be executed every 10 minutes until an specific action is returned, is there any way to customize the polling interval of an action in hybris order business process? I know that you can configure a timeout but not a polling interval:
<wait id='waitForOrderConfirmation' then='checkOrder' prependProcessCode='true'>
<event>confirm</event>
<timeout delay='PT12H' then='asmCancelOrder'/>
Need custom Implementation to achieve this and need to use BusinessProcessParameterModel.
Below are the steps to Make Retry based on Dealy.
Create RepeatableAction.
import de.hybris.platform.processengine.model.BusinessProcessModel;
import de.hybris.platform.processengine.model.BusinessProcessParameterModel;
import de.hybris.platform.servicelayer.model.ModelService;
import de.hybris.platform.warehousing.process.BusinessProcessException;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Optional;
public interface RepeatableAction<T extends BusinessProcessModel>
{
int COUNTER_STARTER = 1;
ModelService getModelService();
Optional<Integer> extractThreshold(T process);
String getParamName();
default void increaseRetriesCounter(final T process)
{
final Collection<BusinessProcessParameterModel> contextParameters = process.getContextParameters();
final Optional<BusinessProcessParameterModel> paramOptional = extractCounter(contextParameters);
paramOptional.ifPresent(this::incrementParameter);
if (!paramOptional.isPresent())
{
final Collection<BusinessProcessParameterModel> newContextParameters = new ArrayList<>(contextParameters);
final BusinessProcessParameterModel counter = getModelService().create(BusinessProcessParameterModel.class);
counter.setName(getParamName());
counter.setValue(COUNTER_STARTER);
counter.setProcess(process);
newContextParameters.add(counter);
process.setContextParameters(newContextParameters);
getModelService().save(process);
}
}
default Optional<BusinessProcessParameterModel> extractCounter(
final Collection<BusinessProcessParameterModel> contextParameters)
{
//#formatter:off
return contextParameters.stream().filter(p -> getParamName().equals(p.getName())).findFirst();
//#formatter:on
}
default void incrementParameter(final BusinessProcessParameterModel parameter)
{
final Object value = parameter.getValue();
if (value instanceof Integer)
{
parameter.setValue((Integer) value + 1);
getModelService().save(parameter);
}
else
{
//#formatter:off
final String message = MessageFormat.format("Wrong process parameter '{}' type. {} expected, {} actual.", getParamName(),
Integer.class.getSimpleName(), value.getClass().getSimpleName());
//#formatter:on
throw new BusinessProcessException(message);
}
}
default boolean retriesCountThresholdExceeded(final T process)
{
//#formatter:off
final Optional<Integer> counterOptional = extractCounter(process.getContextParameters())
.map(BusinessProcessParameterModel::getValue).filter(Integer.class::isInstance).map(Integer.class::cast);
//#formatter:on
final Optional<Integer> thresholdOptional = extractThreshold(process);
final boolean counterSet = counterOptional.isPresent();
final boolean thresholdSet = thresholdOptional.isPresent();
boolean thresholdExceeded = false;
if (counterSet && thresholdSet)
{
final int counter = counterOptional.get();
final int threshold = thresholdOptional.get();
thresholdExceeded = counter > threshold;
}
return counterSet && thresholdSet && thresholdExceeded;
}
}
Then Go to Custom Action and Implement This Interface and based on some condition make custom Transition as RETRY, something like this.
public class CustomAction extends AbstractAction<OrderProcessModel>
implements RepeatableAction<OrderProcessModel>
{
private static final int MAX_RETRIES = 3;//make it configurable it's your choice
#Override
public Transition prepare(OrderModel order, OrderProcessModel process)
{
if (!retriesCountThresholdExceeded(process))
{
if (custom condition)
{
return Transition.OK;
}
getModelService().refresh(order);
increaseRetriesCounter(process);
return Transition.RETRY;
}
return Transition.NOK;
}
}
#Override
public Optional<Integer> extractThreshold(OrderProcessModel process)
{
return Optional.of(MAX_RETRIES);
}
Then in process.xml Action entries should be like this.
<action id="customAction" bean="customAction">
<transition name="OK" to="nextStep"/>
<transition name="RETRY" to="waitForOrderConfirmation"/>
<transition name="NOK" to="cancelOrderAction"/>
</action>
<wait id='waitForOrderConfirmation' then='checkOrder' prependProcessCode='true'>
<event>confirm</event>
<timeout delay='PT12H' then='asmCancelOrder'/>
<wait>
NOTE: Please set dealy as per requirement as of new 12hr seems to be too much
I thought this would be a simple question but I am having trouble finding an answer. I have a single ImageView object associated with a JavaFX Scene object and I want to load large images in from disk and display them in sequence one after another using the ImageView. I have been trying to find a good way to repeatedly check the Image object and when it is done loading in the background set it to the ImageView and then start loading a new Image object. The code I have come up with (below) works sometimes and sometimes it doesn't. I am pretty sure I am running into issues with JavaFX and threads. It loads the first image sometimes and stops. The variable "processing" is a boolean instance variable in the class.
What is the proper way to load an image in JavaFX in the background and set it to the ImageView after it is done loading?
public void start(Stage primaryStage) {
...
ImageView view = new ImageView();
((Group)scene.getRoot()).getChildren().add(view);
...
Thread th = new Thread(new Thread() {
public void run() {
while(true) {
if (!processing) {
processing = true;
String filename = files[count].toURI().toString();
Image image = new Image(filename,true);
image.progressProperty().addListener(new ChangeListener<Number>() {
#Override public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number progress) {
if ((Double) progress == 1.0) {
if (! image.isError()) {
view.setImage(image);
}
count++;
if (count == files.length) {
count = 0;
}
processing = false;
}
}
});
}
}
}
});
}
I actually think there's probably a better general approach to satisfying whatever your application's requirements are than the approach you are trying to use, but here is my best answer at implementing the approach you describe.
Create a bounded BlockingQueue to hold the images as you load them. The size of the queue may need some tuning: too small and you won't have any "buffer" (so you won't be able to take advantage of any that are faster to load than the average), too large and you might consume too much memory. The BlockingQueue allows you to access it safely from multiple threads.
Create a thread that simply loops and loads each image synchronously, i.e. that thread blocks while each image loads, and deposits them in the BlockingQueue.
Since you want to try to display images up to once per FX frame (i.e. 60fps), use an AnimationTimer. This has a handle method that is invoked on each frame render, on the FX Application Thread, so you can implement it just to poll() the BlockingQueue, and if an image was available, set it in the ImageView.
Here's an SSCCE. I also indicated how to do this where you display each image for a fixed amount of time, as I think that's a more common use case and might help others looking for similar functionality.
import java.io.File;
import java.net.MalformedURLException;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import javafx.animation.AnimationTimer;
import javafx.animation.PauseTransition;
import javafx.application.Application;
import javafx.concurrent.Task;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.Pane;
import javafx.scene.layout.StackPane;
import javafx.stage.DirectoryChooser;
import javafx.stage.Stage;
public class ScreenSaver extends Application {
#Override
public void start(Stage primaryStage) {
BorderPane root = new BorderPane();
Button startButton = new Button("Choose image directory...");
startButton.setOnAction(e -> {
DirectoryChooser chooser= new DirectoryChooser();
File dir = chooser.showDialog(primaryStage);
if (dir != null) {
File[] files = Stream.of(dir.listFiles()).filter(file -> {
String fName = file.getAbsolutePath().toLowerCase();
return fName.endsWith(".jpeg") | fName.endsWith(".jpg") | fName.endsWith(".png");
}).collect(Collectors.toList()).toArray(new File[0]);
root.setCenter(createScreenSaver(files));
}
});
root.setCenter(new StackPane(startButton));
primaryStage.setScene(new Scene(root, 800, 800));
primaryStage.show();
}
private Parent createScreenSaver(File[] files) {
ImageView imageView = new ImageView();
Pane pane = new Pane(imageView);
imageView.fitWidthProperty().bind(pane.widthProperty());
imageView.fitHeightProperty().bind(pane.heightProperty());
imageView.setPreserveRatio(true);
Executor exec = Executors.newCachedThreadPool(runnable -> {
Thread t = new Thread(runnable);
t.setDaemon(true);
return t ;
});
final int imageBufferSize = 5 ;
BlockingQueue<Image> imageQueue = new ArrayBlockingQueue<Image>(imageBufferSize);
exec.execute(() -> {
int index = 0 ;
try {
while (true) {
Image image = new Image(files[index].toURI().toURL().toExternalForm(), false);
imageQueue.put(image);
index = (index + 1) % files.length ;
}
} catch (MalformedURLException e) {
throw new RuntimeException(e);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
});
// This will show a new image every single rendering frame, if one is available:
AnimationTimer timer = new AnimationTimer() {
#Override
public void handle(long now) {
Image image = imageQueue.poll();
if (image != null) {
imageView.setImage(image);
}
}
};
timer.start();
// This wait for an image to become available, then show it for a fixed amount of time,
// before attempting to load the next one:
// Duration displayTime = Duration.seconds(1);
// PauseTransition pause = new PauseTransition(displayTime);
// pause.setOnFinished(e -> exec.execute(createImageDisplayTask(pause, imageQueue, imageView)));
// exec.execute(createImageDisplayTask(pause, imageQueue, imageView));
return pane ;
}
private Task<Image> createImageDisplayTask(PauseTransition pause, BlockingQueue<Image> imageQueue, ImageView imageView) {
Task<Image> imageDisplayTask = new Task<Image>() {
#Override
public Image call() throws InterruptedException {
return imageQueue.take();
}
};
imageDisplayTask.setOnSucceeded(e -> {
imageView.setImage(imageDisplayTask.getValue());
pause.playFromStart();
});
return imageDisplayTask ;
}
public static void main(String[] args) {
launch(args);
}
}
I am trying to connect my Desktop to the PHILIPS Hue light server using java.
When the code runs, it will flow into the Controller.java. When that happens, the FindBridges method in Controller.java runs. This is where the error occurs. In debugging, it displays a NullPointerException in thread "AWT-Event-Queue-0".
I presume that the server/lightbulb cannot be found at all, even though it is turned on and my android application can connect to it.
The error is stated below:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at com.philips.lighting.gui.DesktopView$1.actionPerformed(DesktopView.java:72)
Controller.java
package com.philips.lighting;
import java.util.List;
import java.util.Random;
import javax.swing.JDialog;
import com.philips.lighting.hue.sdk.upnp.*;
import com.philips.lighting.data.HueProperties;
import com.philips.lighting.gui.AccessPointList;
import com.philips.lighting.gui.DesktopView;
import com.philips.lighting.gui.LightColoursFrame;
import com.philips.lighting.gui.PushLinkFrame;
import com.philips.lighting.hue.sdk.PHAccessPoint;
import com.philips.lighting.hue.sdk.PHBridgeSearchManager;
import com.philips.lighting.hue.sdk.PHHueSDK;
import com.philips.lighting.hue.sdk.PHMessageType;
import com.philips.lighting.hue.sdk.PHSDKListener;
import com.philips.lighting.model.PHBridge;
import com.philips.lighting.model.PHBridgeResourcesCache;
import com.philips.lighting.model.PHHueError;
import com.philips.lighting.model.PHHueParsingError;
import com.philips.lighting.model.PHLight;
import com.philips.lighting.model.PHLightState;
public class Controller {
private PHHueSDK phHueSDK;
private DesktopView desktopView;
private PushLinkFrame pushLinkDialog;
private LightColoursFrame lightColoursFrame;
private static final int MAX_HUE=65535;
private Controller instance;
public Controller(DesktopView view) {
this.desktopView = view;
this.phHueSDK = PHHueSDK.getInstance(); // or phHueSDK = PHHueSDK.getInstance();
this.instance = this;
}
public void findBridges() {
//To uniquely identify your app in the bridge whitelist we recommend you set your app name, and the device
phHueSDK.setAppName("SmartShowroomApp"); // e.g. phHueSDK.setAppName("QuickStartApp");
phHueSDK.setDeviceName("SmartDevice"); // e.g. If you are programming for Android: phHueSDK.setDeviceName(android.os.Build.MODEL);
phHueSDK = PHHueSDK.getInstance();
PHBridgeSearchManager sm = (PHBridgeSearchManager) phHueSDK.getSDKService(PHHueSDK.SEARCH_BRIDGE);
sm.search(true, true);
//This starts a UPNP/Portal Search and takes around 10 seconds.
//The PHSDKListener (onAccessPointsFound) will be notified with the bridges found.
}
private PHSDKListener listener = new PHSDKListener() {
#Override
public void onAccessPointsFound(List<PHAccessPoint> accessPointsList) {
// Handle your bridge search results here.
//Typically if multiple results are returned you will want to display them in a list
// and let the user select their bridge.
//If one is found you may opt to connect automatically to that bridge.
phHueSDK = PHHueSDK.getInstance();
desktopView.getFindingBridgeProgressBar().setVisible(false);
if (accessPointsList != null && accessPointsList.size() > 0)
{
AccessPointList accessPointList = new AccessPointList(accessPointsList, instance);
accessPointList.setVisible(true);
accessPointList.setLocationRelativeTo(null); // Centre the AccessPointList Frame
phHueSDK.getAccessPointsFound().clear(); // Clear all connected access points
phHueSDK.getAccessPointsFound().addAll(accessPointsList); // Adds multiple results to the list
}
else
{
PHBridgeSearchManager sm = (PHBridgeSearchManager) phHueSDK.getSDKService(PHHueSDK.SEARCH_BRIDGE);
sm.search(false, false, true);
}
}
#Override
public void onAuthenticationRequired(PHAccessPoint accessPoint) {
// Start the Pushlink Authentication.
phHueSDK = PHHueSDK.getInstance();
desktopView.getFindingBridgeProgressBar().setVisible(false);
phHueSDK.startPushlinkAuthentication(accessPoint);
// Arriving here indicates that Pushlinking is required (to prove the User has physical access to the bridge).
//Typically here you will display a pushlink image (with a timer) indicating to to the user they need to push the button on their bridge within 30 seconds.
pushLinkDialog = new PushLinkFrame(instance);
pushLinkDialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
pushLinkDialog.setModal(true);
pushLinkDialog.setLocationRelativeTo(null); // Center the dialog.
pushLinkDialog.setVisible(true);
}
#Override
public void onBridgeConnected(PHBridge bridge) {
phHueSDK = PHHueSDK.getInstance();
phHueSDK.setSelectedBridge(bridge);
phHueSDK.enableHeartbeat(bridge, PHHueSDK.HB_INTERVAL);
// Here it is recommended to set your connected bridge in your sdk object (as above) and start the heartbeat.
// At this point you are connected to a bridge so you should pass control to your main program/activity.
// Also it is recommended you store the connected IP Address/ Username in your app here.
//This will allow easy automatic connection on subsequent use.
// Remember to disable the heartbeat when exiting your app
//phHueSDK.disableAllHeartbeat();
//If you are only interested in a particular resource (e.g. Lights), you can enable the multi resource heartbeat as follows:
//PHHeartbeatManager heartbeatManager = PHHeartbeatManager.getInstance();
//heartbeatManager.enableLightsHeartbeat(bridge, PHHueSDK.HB_INTERVAL);
// To stop the heartbeat you can use either of the below
//heartbeatManager.disableLightsHeartbeat(bridge);
//heartbeatManager.disableAllHeartbeats(bridge);
desktopView.getFindingBridgeProgressBar().setVisible(false);
String username = HueProperties.getUsername();
String lastIpAddress = bridge.getResourceCache().getBridgeConfiguration().getIpAddress();
System.out.println("On connected: IP " + lastIpAddress);
HueProperties.storeUsername(username);
HueProperties.storeLastIPAddress(lastIpAddress);
HueProperties.saveProperties();
// Update the GUI.
desktopView.getLastConnectedIP().setText(lastIpAddress);
desktopView.getLastUserName().setText(username);
// Close the PushLink dialog (if it is showing).
if (pushLinkDialog!=null && pushLinkDialog.isShowing()) {
pushLinkDialog.setVisible(false);
}
// Enable the Buttons/Controls to change the hue bulbs.s
desktopView.getRandomLightsButton().setEnabled(true);
desktopView.getSetLightsButton().setEnabled(true);
}
#Override
public void onCacheUpdated(List cacheNotificationsList, PHBridge bridge) {
// Here you receive notifications that the BridgeResource Cache was updated. Use the PHMessageType to
// check which cache was updated, e.g.
if (cacheNotificationsList.contains(PHMessageType.LIGHTS_CACHE_UPDATED)) {
System.out.println("Lights Cache Updated ");
}
}
#Override
public void onConnectionLost(PHAccessPoint accessPoint) {
// Here you would handle the loss of connection to your bridge.
phHueSDK = PHHueSDK.getInstance();
if (accessPoint == null)
{
System.out.println("Please reconnect to your bridge.");
}
}
#Override
public void onConnectionResumed(PHBridge bridge) {
PHHueSDK phHueSDK = PHHueSDK.getInstance();
for (int i = 0; i < phHueSDK.getDisconnectedAccessPoint().size(); i++)
{
if (phHueSDK.getDisconnectedAccessPoint().get(i).getIpAddress()
.equals(bridge.getResourceCache().getBridgeConfiguration().getIpAddress())) {
phHueSDK.getDisconnectedAccessPoint().remove(i);
}
}
}
#Override
public void onError(int code, final String message) {
// Here you can handle events such as Bridge Not Responding, Authentication Failed and Bridge Not Found.
if (code == PHHueError.BRIDGE_NOT_RESPONDING) {
desktopView.getFindingBridgeProgressBar().setVisible(false);
desktopView.getFindBridgesButton().setEnabled(true);
desktopView.getConnectToLastBridgeButton().setEnabled(true);
desktopView.showDialog(message);
}
else if (code == PHMessageType.PUSHLINK_BUTTON_NOT_PRESSED) {
pushLinkDialog.incrementProgress();
}
else if (code == PHMessageType.PUSHLINK_AUTHENTICATION_FAILED) {
if (pushLinkDialog.isShowing()) {
pushLinkDialog.setVisible(false);
desktopView.showDialog(message);
}
else {
desktopView.showDialog(message);
}
desktopView.getFindBridgesButton().setEnabled(true);
}
else if (code == PHMessageType.BRIDGE_NOT_FOUND) {
desktopView.getFindingBridgeProgressBar().setVisible(false);
desktopView.getFindBridgesButton().setEnabled(true);
desktopView.showDialog(message);
}
}
#Override
public void onParsingErrors(List<PHHueParsingError> parsingErrorsList) {
// Any JSON parsing errors are returned here.
//Typically your program should never return these.
for (PHHueParsingError parsingError: parsingErrorsList) {
System.out.println("ParsingError : " + parsingError.getMessage());
}
}
};
public PHSDKListener getListener() {
return listener;
}
public void setListener(PHSDKListener listener) {
this.listener = listener;
}
public void randomLights() {
PHBridge bridge = phHueSDK.getSelectedBridge();
PHBridgeResourcesCache cache = bridge.getResourceCache();
// And now you can get any resource you want, for example:
List<PHLight> allLights = cache.getAllLights();
Random rand = new Random();
for (PHLight light : allLights) {
PHLightState lightState = new PHLightState();
lightState.setHue(rand.nextInt(MAX_HUE));
bridge.updateLightState(light, lightState); // If no bridge response is required then use this simpler form.
}
}
public void showControlLightsWindow() {
if (lightColoursFrame == null) {
lightColoursFrame = new LightColoursFrame();
}
lightColoursFrame.setLocationRelativeTo(null); // Centre window
lightColoursFrame.setVisible(true);
}
/**
* Connect to the last known access point.
* This method is triggered by the Connect to Bridge button but it can equally be used to automatically connect to a bridge.
*
*/
public boolean connectToLastKnownAccessPoint() {
String username = HueProperties.getUsername();
String lastIpAddress = HueProperties.getLastConnectedIP();
if (username==null || lastIpAddress == null) {
desktopView.showDialog("Missing Last Username or Last IP. Last known connection not found.");
return false;
}
//Obviously, every time a user opens up their Android hue app or application you don't want them to have to select their bridge, authenticate pushlink everytime.
//The recommended way to overcome this issue is to store the connected IP Address/Username (using your preferred method storage) and if set try to connect automatically.
PHAccessPoint accessPoint = new PHAccessPoint();
accessPoint.setIpAddress(lastIpAddress);
accessPoint.setUsername(username);
phHueSDK.connect(accessPoint);
return true;
//Note that the .connect method returns control to your PHSDKListener, so when connected the onBridgeConnected will be called again, and if your users Bridge IP has changed for example, onError will be called and can be handled programatically.
}
public void enableFindBridgesButton() {
desktopView.getFindBridgesButton().setEnabled(true);
}
public void showProgressBar() {
desktopView.getFindingBridgeProgressBar().setVisible(true);
}
}
DesktopView.java
package com.philips.lighting.gui;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JTextField;
import layout.TableLayout;
import com.philips.lighting.Controller;
import com.philips.lighting.data.HueProperties;
/**
* DesktopView.java
*
* The main GUI showing last connected IP/Username and buttons for Finding Bridges and Changing the Hue Lights, once connected to a bridge.
*
*/
public class DesktopView extends JFrame {
private static final long serialVersionUID = -7469471678945429320L;
private Controller controller;
private JButton setLightsButton;
private JButton randomLightsButton;
private JButton findBridgesButton;
private JButton connectToLastBridgeButton;
private JProgressBar findingBridgeProgressBar;
private JTextField lastConnectedIP;
private JTextField lastUserName;
public DesktopView(){
setTitle("Hue Desktop");
JPanel mainPanel = new JPanel();
// TODO - Move to another class
JPanel controls = new JPanel();
controls.setLayout(new GridLayout(2,3));
findingBridgeProgressBar = new JProgressBar();
findingBridgeProgressBar.setBorderPainted(false);
findingBridgeProgressBar.setIndeterminate(true);
findingBridgeProgressBar.setVisible(false);
//Set up components preferred size
String lastUsername = HueProperties.getUsername();
String lastConnectedIPStr = HueProperties.getLastConnectedIP();
JLabel labelLastConIP = new JLabel("Last Connected IP:");
lastConnectedIP = new JTextField(lastConnectedIPStr);
lastConnectedIP.setEditable(false);
JLabel labelLastUsername = new JLabel("Last UserName:");
lastUserName = new JTextField(lastUsername);
lastUserName.setEditable(false);
findBridgesButton = new JButton("Find New Bridges");
findBridgesButton.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent arg0) {
findBridgesButton.setEnabled(false);
connectToLastBridgeButton.setEnabled(false);
controller.findBridges();
findingBridgeProgressBar.setBorderPainted(true);
findingBridgeProgressBar.setVisible(true);
}
});
connectToLastBridgeButton = new JButton("Auto Connect");
connectToLastBridgeButton.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent ae) {
if (controller.connectToLastKnownAccessPoint()) {
connectToLastBridgeButton.setEnabled(false);
findBridgesButton.setEnabled(false);
findingBridgeProgressBar.setBorderPainted(true);
findingBridgeProgressBar.setVisible(true);
}
}
});
setLightsButton = new JButton("Change Light Colours");
setLightsButton.setEnabled(false);
setLightsButton.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent arg0) {
controller.showControlLightsWindow();
}
});
randomLightsButton = new JButton("Randomize Lights");
randomLightsButton.setEnabled(false);
randomLightsButton.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent arg0) {
controller.randomLights();
}
});
double border = 10;
double size[][] =
{{border, 160, 20, 300, 20, 160}, // Columns
{border, 26, 10, 26, 26, 26,6,26}}; // Rows
mainPanel.setLayout (new TableLayout(size));
mainPanel.add(labelLastConIP, " 1, 1");
mainPanel.add(lastConnectedIP, " 3, 1");
mainPanel.add(labelLastUsername, " 1, 3");
mainPanel.add(lastUserName, " 3, 3");
mainPanel.add(findingBridgeProgressBar, " 3, 5");
mainPanel.add(connectToLastBridgeButton, " 5, 1");
mainPanel.add(findBridgesButton, " 5, 3");
mainPanel.add(randomLightsButton, " 5, 5");
mainPanel.add(setLightsButton, " 5, 7");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setPreferredSize(new Dimension(700,270));
getContentPane().add(new JLabel(" An example Java/Swing Desktop Application to control your Hue Lights."), BorderLayout.NORTH);
getContentPane().add(mainPanel, BorderLayout.CENTER);
//4. Size the frame.
pack();
setLocationRelativeTo(null); // Centre the window.
setVisible(true);
}
public void setController(Controller controller) {
this.controller = controller;
}
public JButton getSetLightsButton() {
return setLightsButton;
}
public JButton getRandomLightsButton() {
return randomLightsButton;
}
public JButton getFindBridgesButton() {
return findBridgesButton;
}
public JButton getConnectToLastBridgeButton() {
return connectToLastBridgeButton;
}
public void showDialog(String message) {
JOptionPane.showMessageDialog(this, message);
}
public JProgressBar getFindingBridgeProgressBar() {
return findingBridgeProgressBar;
}
public JTextField getLastConnectedIP() {
return lastConnectedIP;
}
public JTextField getLastUserName() {
return lastUserName;
}
}
HueDesktop.java
package com.philips.lighting;
import com.philips.lighting.data.HueProperties;
import com.philips.lighting.gui.DesktopView;
import com.philips.lighting.hue.sdk.PHHueSDK;
/**
* HueDesktop.java
* An example Java/Swing Desktop application illustrating how to connect to a bridge and change your Hue lights
* using a Java Desktop Application.
*
* For more information on programming for Hue see:
* http://developers.meethue.com
*
*/
class HueDesktop {
public static void main(String args[]) {
new HueDesktop();
}
public HueDesktop() {
PHHueSDK phHueSDK = PHHueSDK.create();
// Load in HueProperties, if first time use a properties file is created.
HueProperties.loadProperties();
// Set Up the View (A JFrame, MenuBar and Console).
DesktopView desktopView = new DesktopView();
// Bind the Model and View
Controller controller = new Controller(desktopView);
desktopView.setController(controller);
// Register the PHSDKListener to receive callbacks from the bridge.
phHueSDK.getNotificationManager().registerSDKListener(controller.getListener());
}
}
Did you ever solve this? In future it is probably best to post hue Java SDK issues on the GitHub site. https://github.com/PhilipsHue/PhilipsHueSDK-Java-MultiPlatform-Android/issues
I would have seen this sooner on here (I wrote this code btw so am possibly the culprit).
I do remember seeing a similar issue before, am pretty sure it was related to Macs and the JDK Compiler level used (I possibly used an incompatible Swing component on Mac and JDK 1.6). Can you let me know your OS and JDK Compiler level and I will check this further?