Discussion :

[Gagura]

Bonjour à tous, je suis en train de dévélopper une interface graphique sous Android 2.2 qui me permettra d'afficher la vitesse et le niveau de batterie d'un Kart électrique via liaison Bluetooth. Mon projet se découpe en 4 fichiers.java et 1 fichier.xml
Mon projet Interface graphique fonctionne bien tout seul. Mon projet Bluetooth fonctionne bien tout seul aussi.
Le problème vient quand j'assemble les 2 projets. Quand je lance mon application il y a une fermeture soudaine. En effet je sais d'où vient le problème mais je ne sais pas pourquoi et comment le résoudre. Lorsque dans mon fichier Interface.java essai d'utiliser une classe de mon fichier BtInterface il y a une Erreur sous LogCat:

La source d'erreur vient de:

Code :

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bt = new BtInterface(handlerStatus, handler);

Voici mon InterfaceActivity.java

Code :

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package com.Gabriel.android.Interface;
 
import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;	// Permet la reaction apres un click
import android.widget.TabHost;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.TabHost.TabSpec;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.graphics.Color;
import com.androidplot.ui.AnchorPosition;
import com.androidplot.ui.widget.Widget;
import com.androidplot.xy.LineAndPointFormatter;
import com.androidplot.xy.XLayoutStyle;
import com.androidplot.xy.XYPlot;
import com.androidplot.xy.LineAndPointRenderer;
import com.androidplot.xy.YLayoutStyle;
import android.content.res.Resources;
import android.graphics.drawable.LevelListDrawable;
import android.widget.ImageView; 
import com.Gabriel.android.Interface.BtInterface;
 
//import com.androidplot.xy.BoundaryMode;
//import com.androidplot.Plot;
//import android.content.Intent;
//import com.androidplot.xy.XYStepMode;
 
 
 
 
 
 
public final class InterfaceActivity extends Activity 
{
	private TabHost monTabHost; /** Ajouter ceci pour utiliser Tabhost*/
	private XYPlot mySimpleXYPlot;
	private int batteryPercent;
	private ImageView image;
	private ImageView batterieImage;
	private LevelListDrawable drawable1;
	private LevelListDrawable drawable; // The Handler to refresh the ImageViewprivate 
 
	private TextView logview;
	//private Button disconnect,connection;
	private BtInterface bt = null;
	private long lastTime = 0;
 
 
 
 
	final Handler handler = new Handler() 
	{
        public void handleMessage(Message msg) 
        {
            String data = msg.getData().getString("receivedData");
 
            long t = System.currentTimeMillis();
            if(t-lastTime > 100) 
            {// Pour éviter que les messages soit coupés
                logview.append("\n");
				lastTime = System.currentTimeMillis();
			}
            logview.append(data);
        }
    };
 
    final Handler handlerStatus = new Handler() 
    {
        public void handleMessage(Message msg) 
        {
            int co = msg.arg1;
            if(co == 1) 
            {
            	logview.append("Connected\n");
            	logview.append("Bienvenue\n");
            	String device = bt.getDevice().getName().toString();
			    Toast.makeText(getApplicationContext(),"connected to " + device, Toast.LENGTH_LONG).show();
            } 
            if(co != 1) 
            {
            	logview.append("Disconnected\n");
            }
        }
    };
 
 
 
 
 
	Handler updateImage = new Handler()
	{
		public void handleMessage(android.os.Message msg)
		{// Update batterieImage.
			image.setImageLevel(msg.what);
			batterieImage.setImageLevel(msg.what);
		};
	}; 
		// private ImageView imageView;
		// private int m_level=0; 
		/** Called when the activity is first created. */
 
 
 
	 /**
         * Appelée lorsque l’activité est créée.
         * Permet de restaurer l’état de l’interface
         * utilisateur grâce au paramètre savedInstanceState.
         */
	@Override
	public void onCreate(Bundle savedInstanceState) 
	{
 
		// Placez votre code ici
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
 
		//bt = new BtInterface(handlerStatus, handler);
 
		Resources res=getResources();
		drawable=(LevelListDrawable)res.getDrawable(R.drawable.image);
		image=(ImageView)findViewById(R.id.battery_anim);
		image.setImageDrawable(drawable); 
 
		Resources res1=getResources();
		drawable1=(LevelListDrawable)res1.getDrawable(R.drawable.batterie);
		batterieImage=(ImageView)findViewById(R.id.battery_niveau);
		batterieImage.setImageDrawable(drawable1);   
 
 
 
		new Thread(new Runnable()
		{ 
			public void run()
			{
				while (true)
				{
					batteryPercent=(int) (Math.random()*100);
					updateImage.sendEmptyMessage(batteryPercent); // Notify the change to Handler.
					try 
					{
						Thread.sleep(3000);
					} catch (InterruptedException e) 
					{
						// TODO Auto-generated catch block
						e.printStackTrace();
					} // Update battery every 3s.
				} 
			}
		}).start();
 
 
 
		// initialize our XYPlot reference:
        mySimpleXYPlot = (XYPlot) findViewById(R.id.mySimpleXYPlot);
 
        // add a new series
        mySimpleXYPlot.addSeries(new SimpleXYSeries(), LineAndPointRenderer.class, new LineAndPointFormatter(Color.rgb(0, 200, 0), Color.rgb(200, 0, 0), null));
 
        // reduce the number of range labels
        //mySimpleXYPlot.getGraphWidget().setRangeTicksPerLabel(4);
 
        // reposition the domain label to look a little cleaner:
        Widget domainLabelWidget = mySimpleXYPlot.getDomainLabelWidget();
 
        mySimpleXYPlot.position(domainLabelWidget,                     // the widget to position
                                45,                                    // x position value, in this case 45 pixels
                                XLayoutStyle.ABSOLUTE_FROM_LEFT,       // how the x position value is applied, in this case from the left
                                0,                                     // y position value
                                YLayoutStyle.ABSOLUTE_FROM_BOTTOM,     // how the y position is applied, in this case from the bottom
                                AnchorPosition.LEFT_BOTTOM);           // point to use as the origin of the widget being positioned
 
        // get rid of the visual aids for positioning:
        mySimpleXYPlot.disableAllMarkup();
 
 
 
		// Récupération du TabHost
		monTabHost =(TabHost) findViewById(R.id.TabHost01);
		// Avant d’ajouter des onglets, il faut impérativement appeler la méthode
		// setup() du TabHost
		monTabHost.setup();
		// Nous ajoutons les 3 onglets dans notre TabHost
		// Nous paramétrons le 1er Onglet
		TabSpec spec = monTabHost.newTabSpec("Presentation");
		// Nous paramétrons le texte qui s’affichera dans l’onglet
		// ainsi que l’image qui se positionnera
		// au dessus du texte.
		spec.setIndicator(" ",getResources().getDrawable(R.drawable.presentatione));
		// On spécifie le Layout qui s’affichera lorsque l’onglet sera sélectionné
		spec.setContent(R.id.Onglet1);
		// On ajoute l’onglet dans notre TabHost
		monTabHost.addTab(spec);
 
		TabSpec spec1 = monTabHost.newTabSpec("Commande");
		spec1.setIndicator(" ",getResources().getDrawable(R.drawable.commande));
		spec1.setContent(R.id.Onglet2);
		monTabHost.addTab(spec1);
 
		TabSpec spec2 = monTabHost.newTabSpec("Courbes");
		spec2.setIndicator(" ",getResources().getDrawable(R.drawable.courbe));
		spec2.setContent(R.id.Onglet3);
		monTabHost.addTab(spec2);	
 
		monTabHost.setOnTabChangedListener
		(
				new TabHost.OnTabChangeListener ()
				{
					public void onTabChanged(String tabId)
					{
						// Vous pourrez exécuter du code lorsqu’un
						// onglet est cliqué. Pour déterminer
						// quel onglet a été cliqué, il
						// vous suffira de vérifier le tabId envoyé lors
						// du clic et d’exécuter votre code en
						// conséquence.
						Toast.makeText(InterfaceActivity.this, "L’onglet " + tabId + " a été cliqué", Toast.LENGTH_SHORT).show();
					}
				}
		);
 
 
		//bt.connect();  
 
		//BtInterface(handlerStatus, handler).connect();
 
		findViewById(R.id.ImageButton04).setOnClickListener(connectListener);   
		findViewById(R.id.ImageButton05).setOnClickListener(disconnectListener);
 
	}
 
	private OnClickListener connectListener = new OnClickListener()
	{
		public void onClick(View v) 
		{
				//bt.connect();
				//disconnect.setEnabled(true);
				//send.setEnabled(true);	
				String connecter = "Connecté"; 
				Toast.makeText(getApplicationContext(), connecter, Toast.LENGTH_LONG).show();
		}
	};
 
 
	private OnClickListener disconnectListener = new OnClickListener()
	{
		public void onClick(View v) 
		{
				//bt.close();
				//disconnect.setEnabled(false);
				//send.setEnabled(false);
				String deconnect = "Deconnecté"; 
				Toast.makeText(getApplicationContext(), deconnect, Toast.LENGTH_LONG).show();
		}
	};
 
 
 
	@Override
	public void onDestroy()	
	{
		// Placez votre code ici
		super.onDestroy();
	}
 
	/**
         * Appelée lorsque l’activité démarre.
         * Permet d’initialiser les contrôles.
         */
	@Override
	public void onStart()
	{
		super.onStart();
		// Placezvotre code ici
	}
 
 
	/**
         * Appelée lorsque l’activité passe en arrière plan.
         * Libérez les écouteurs, arrêtez les threads, votre activité
         * peut disparaître de la mémoire.
         */
 
	@Override
	public void onStop()
	{
		// Placez votre code ici
		super.onStop();
	}
 
 
	/**
         * Appelée lorsque l’activité sort de son état de veille.
         */
 
	@Override
	public void onRestart()
	{
		super.onRestart();
		//Placez votre code ici
	}
 
 
 
	/**
         * Appelée lorsque que l’activité est suspendue.
         * Stoppez les actions qui consomment des ressources.
         * L’activité va passer en arrière-plan.
         */
 
	@Override
	public void onPause()
	{
		//Placez votre code ici
		super.onPause();
	}
 
 
	/**
         * Appelée après le démarrage ou une pause.
         * Relancez les opérations arrêtées (threads).
         * Mettez à jour votre application et vérifiez vos écouteurs.
         */
 
	@Override
	public void onResume()
	{
		super.onResume();
		// Placez votre code ici
	}
 
 
	/**
         * Appelée lorsque l’ activité termine son cycle visible.
         * Sauvez les données importantes.
         */
 
	@Override
	public void onSaveInstanceState(Bundle savedInstanceState) 
	{
		// Placez votre code ici
		// sans quoi l’activité aura perdu son état
		// lors de son réveil
		super.onSaveInstanceState(savedInstanceState);
	}
 
 
 
 
 
	/**
         * Appelée après onCreate.
         * Les données sont rechargées et l’interface utilisateur.
         * est restaurée dans le bon état.
         */
 
}

BtInterface.java

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package com.Gabriel.android.Interface;
 
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Set;
import java.util.UUID;
 
//import android.widget.TextView;
//import android.widget.Toast;
 
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
//import android.widget.Toast;
 
public class BtInterface 
{
 
	private BluetoothDevice device = null;
	private BluetoothSocket socket = null;
	private InputStream receiveStream = null;
	private OutputStream sendStream = null;
	public String rdata = "Interface Bluetooth";
 
 
	private ReceiverThread receiverThread;
 
	Handler handler;
 
		public BtInterface(Handler hstatus, Handler h) //constructeur
{
		Set<BluetoothDevice> setpairedDevices = BluetoothAdapter.getDefaultAdapter().getBondedDevices();
		BluetoothDevice[] pairedDevices = (BluetoothDevice[]) setpairedDevices.toArray(new BluetoothDevice[setpairedDevices.size()]);
 
		for(int i=0;i<pairedDevices.length;i++) 
		{
			if(pairedDevices[i].getName().contains("GAGURA-PC")) 
			{
				device = pairedDevices[i];
				try 
				{
					socket = device.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
					receiveStream = socket.getInputStream();
					sendStream = socket.getOutputStream();
 
				} catch (IOException e) 
				{
					e.printStackTrace();
				}
				break;
			}
		}
 
		handler = hstatus;
 
		receiverThread = new ReceiverThread(h);
	}
 
		public void sendData(String data)
		{
			sendData(data, false);
		}
 
		public void sendData(String data, boolean deleteScheduledData)
 {
			try 
			{
				sendStream.write(data.getBytes());				
		        sendStream.flush();
			} 
			catch (IOException e) 
			{
				e.printStackTrace();
			}
		}
 
		public void connect() 
{
			new Thread() 
			{
				@Override public void run() 
				{
					try 
					{
						socket.connect();
 
						Message msg = handler.obtainMessage();
						msg.arg1 = 1;
		                handler.sendMessage(msg);		                
						receiverThread.start();
 
					} 
					catch (IOException e) 
					{
						Log.v("N", "Connection Failed : "+e.getMessage());
						e.printStackTrace();
					}
				}
			}.start();
		}
 
		public void close() 
{
			try 
			{
				socket.close();
			} 
			catch (IOException e) 
			{
				e.printStackTrace();
			}
		}
 
		public BluetoothDevice getDevice() 
		{
			return device;
		}
 
		public String getdat()
		{
			return rdata;	
		}
 
 
 
		private class ReceiverThread extends Thread 
		{
			Handler handler;
 
			ReceiverThread(Handler h) 
			{
				handler = h;
			}
 
			public String getdata()
			{
				return rdata;	
			}
 
		@Override public void run() 
			{
				while(true) 
				{
					try {
						// On teste si des données sont disponibles
						if(receiveStream.available() > 0) 
						{
							byte buffer[] = new byte[100];
							// On lit les données, k représente le nombre de bytes lu
							int k = receiveStream.read(buffer, 0, 100);
 
							if(k > 0) 
							{
								byte rawdata[] = new byte[k];
								for(int i=0;i<k;i++)
									// On convertit les données en String
									rawdata[i] = buffer[i];
 
								String data = new String(rawdata);
								rdata =data;	
								rdata=getdata();
 
								// On envoie les données dans le thread de l'UI pour les affichées
								Message msg = handler.obtainMessage();
 
								Bundle b = new Bundle();
								b.putString("receivedData", data);
				                msg.setData(b);
				                handler.sendMessage(msg);
							}
						}
					} 
					catch (IOException e) 
					{
						e.printStackTrace();
					}
				}	
 
		}}
 
 
}

Thermometer.java

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package com.Gabriel.android.Interface;
 
import java.util.List;
 
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.LightingColorFilter;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.RadialGradient;
import android.graphics.RectF;
import android.graphics.Shader;
import android.graphics.Typeface;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
 
public final class Thermometer extends View implements SensorEventListener {
 
	private static final String TAG = Thermometer.class.getSimpleName();
 
	private Handler handler;
 
	// drawing tools
	private RectF rimRect;
	private Paint rimPaint;
	private Paint rimCirclePaint;
 
	private RectF faceRect;
	private Bitmap faceTexture;
	private Paint facePaint;
	private Paint rimShadowPaint;
 
	private Paint scalePaint;
	private RectF scaleRect;
 
	private Paint titlePaint;	
	private Path titlePath;
 
	private Paint logoPaint;
	private Bitmap logo;
	private Matrix logoMatrix;
	private float logoScale;
 
	private Paint handPaint;
	private Path handPath;
	private Paint handScrewPaint;
 
	private Paint backgroundPaint; 
	// end drawing tools
 
	private Bitmap background; // holds the cached static part
 
	// scale configuration
	private static final int totalNicks = 30;
	private static final float degreesPerNick = 360.0f / totalNicks;	
	private static final int centerDegree = 20; // the one in the top center (12 o'clock)
	private static final int minDegrees = 0;
	private static final int maxDegrees = 40;
 
	// hand dynamics -- all are angular expressed in F degrees
	private boolean handInitialized = true;
	private float handPosition = 30;
	private float handTarget = minDegrees;
	private float handVelocity = 0.0f;
	private float handAcceleration = 0.0f;
	private long lastHandMoveTime = -1L;
 
 
	public Thermometer(Context context) {
		super(context);
		init();
	}
 
	public Thermometer(Context context, AttributeSet attrs) {
		super(context, attrs);
		init();
	}
 
	public Thermometer(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		init();
	}
 
	@Override
	protected void onAttachedToWindow() {
		super.onAttachedToWindow();
		attachToSensor();
	}
 
	@Override
	protected void onDetachedFromWindow() {
		detachFromSensor();
		super.onDetachedFromWindow();
	}
 
	@Override
	protected void onRestoreInstanceState(Parcelable state) {
		Bundle bundle = (Bundle) state;
		Parcelable superState = bundle.getParcelable("superState");
		super.onRestoreInstanceState(superState);
 
		handInitialized = bundle.getBoolean("handInitialized");
		handPosition = bundle.getFloat("handPosition");
		handTarget = bundle.getFloat("handTarget");
		handVelocity = bundle.getFloat("handVelocity");
		handAcceleration = bundle.getFloat("handAcceleration");
		lastHandMoveTime = bundle.getLong("lastHandMoveTime");
	}
 
	@Override
	protected Parcelable onSaveInstanceState() {
		Parcelable superState = super.onSaveInstanceState();
 
		Bundle state = new Bundle();
		state.putParcelable("superState", superState);
		state.putBoolean("handInitialized", handInitialized);
		state.putFloat("handPosition", handPosition);
		state.putFloat("handTarget", handTarget);
		state.putFloat("handVelocity", handVelocity);
		state.putFloat("handAcceleration", handAcceleration);
		state.putLong("lastHandMoveTime", lastHandMoveTime);
		return state;
	}
 
	private void init() {
		handler = new Handler();
 
		initDrawingTools();
	}
 
	private String getTitle() {
		return "Kart Electrique - GE5E - 2011/2012";
	}
 
	// Capture de la grandeur à afficher sur le tachymètre --------------------------
 
	private SensorManager getSensorManager() {
		return (SensorManager) getContext().getSystemService(Context.SENSOR_SERVICE);		
	}
 
	private void attachToSensor() {
		SensorManager sensorManager = getSensorManager();
 
		List<Sensor> sensors = sensorManager.getSensorList(Sensor.TYPE_TEMPERATURE);
		if (sensors.size() > 0) {
			Sensor sensor = sensors.get(0);
			sensorManager.registerListener(this, sensor, SensorManager.SENSOR_DELAY_FASTEST, handler);
		} else {
			Log.e(TAG, "No temperature sensor found");
		}		
	}
 
	private void detachFromSensor() {
		SensorManager sensorManager = getSensorManager();
		sensorManager.unregisterListener(this);
	}
 
	// -------------------------------------------------------------------------------
 
	private void initDrawingTools() {
		rimRect = new RectF(0.1f, 0.1f, 0.9f, 0.9f);
 
		// the linear gradient is a bit skewed for realism
		rimPaint = new Paint();
		rimPaint.setFlags(Paint.ANTI_ALIAS_FLAG);
		rimPaint.setShader(new LinearGradient(0.40f, 0.0f, 0.60f, 1.0f, 
										   Color.rgb(0xf0, 0xf5, 0xf0),
										   Color.rgb(0x30, 0x31, 0x30),
										   Shader.TileMode.CLAMP));		
 
		rimCirclePaint = new Paint();
		rimCirclePaint.setAntiAlias(true);
		rimCirclePaint.setStyle(Paint.Style.STROKE);
		rimCirclePaint.setColor(Color.argb(0x4f, 0x33, 0x36, 0x33));
		rimCirclePaint.setStrokeWidth(0.005f);
 
		float rimSize = 0.02f;
		faceRect = new RectF();
		faceRect.set(rimRect.left + rimSize, rimRect.top + rimSize, 
			     rimRect.right - rimSize, rimRect.bottom - rimSize);		
 
		faceTexture = BitmapFactory.decodeResource(getContext().getResources(), 
				   R.drawable.plastic);
		BitmapShader paperShader = new BitmapShader(faceTexture, 
												    Shader.TileMode.MIRROR, 
												    Shader.TileMode.MIRROR);
		Matrix paperMatrix = new Matrix();
		facePaint = new Paint();
		facePaint.setFilterBitmap(true);
		paperMatrix.setScale(1.0f / faceTexture.getWidth(), 
							 1.0f / faceTexture.getHeight());
		paperShader.setLocalMatrix(paperMatrix);
		facePaint.setStyle(Paint.Style.FILL);
		facePaint.setShader(paperShader);
 
		rimShadowPaint = new Paint();
		rimShadowPaint.setShader(new RadialGradient(0.5f, 0.5f, faceRect.width() / 2.0f, 
				   new int[] { 0x00000000, 0x00000500, 0x50000500 },
				   new float[] { 0.96f, 0.96f, 0.99f },
				   Shader.TileMode.MIRROR));
		rimShadowPaint.setStyle(Paint.Style.FILL);
 
		scalePaint = new Paint();
		scalePaint.setStyle(Paint.Style.STROKE);
		scalePaint.setColor(0x9f004d0f);
		scalePaint.setStrokeWidth(0.005f);
		scalePaint.setAntiAlias(true);
 
		scalePaint.setTextSize(0.045f);
		scalePaint.setTypeface(Typeface.SANS_SERIF);
		scalePaint.setTextScaleX(0.8f);
		scalePaint.setTextAlign(Paint.Align.CENTER);		
 
		float scalePosition = 0.10f;
		scaleRect = new RectF();
		scaleRect.set(faceRect.left + scalePosition, faceRect.top + scalePosition,
					  faceRect.right - scalePosition, faceRect.bottom - scalePosition);
 
		titlePaint = new Paint();
		titlePaint.setColor(0xaf946109);
		titlePaint.setAntiAlias(true);
		titlePaint.setTypeface(Typeface.DEFAULT_BOLD);
		titlePaint.setTextAlign(Paint.Align.CENTER);
		titlePaint.setTextSize(0.05f);
		titlePaint.setTextScaleX(0.8f);
 
		titlePath = new Path();
		titlePath.addArc(new RectF(0.24f, 0.24f, 0.76f, 0.76f), -180.0f, -180.0f);
 
		logoPaint = new Paint();
		logoPaint.setFilterBitmap(true);
		logo = BitmapFactory.decodeResource(getContext().getResources(), R.drawable.logo);
		logoMatrix = new Matrix();
		logoScale = (1.0f / logo.getWidth()) * 0.3f;;
		logoMatrix.setScale(logoScale, logoScale);
 
		handPaint = new Paint();
		handPaint.setAntiAlias(true);
		handPaint.setColor(0xff392f2c);		
		handPaint.setShadowLayer(0.01f, -0.005f, -0.005f, 0x7f000000);
		handPaint.setStyle(Paint.Style.FILL);	
 
		handPath = new Path();
		handPath.moveTo(0.5f, 0.5f + 0.2f);
		handPath.lineTo(0.5f - 0.010f, 0.5f + 0.2f - 0.007f);
		handPath.lineTo(0.5f - 0.002f, 0.5f - 0.32f);
		handPath.lineTo(0.5f + 0.002f, 0.5f - 0.32f);
		handPath.lineTo(0.5f + 0.010f, 0.5f + 0.2f - 0.007f);
		handPath.lineTo(0.5f, 0.5f + 0.2f);
		handPath.addCircle(0.5f, 0.5f, 0.025f, Path.Direction.CW);
 
		handScrewPaint = new Paint();
		handScrewPaint.setAntiAlias(true);
		handScrewPaint.setColor(0xff493f3c);
		handScrewPaint.setStyle(Paint.Style.FILL);
 
		backgroundPaint = new Paint();
		backgroundPaint.setFilterBitmap(true);
	}
 
	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		Log.d(TAG, "Width spec: " + MeasureSpec.toString(widthMeasureSpec));
		Log.d(TAG, "Height spec: " + MeasureSpec.toString(heightMeasureSpec));
 
		int widthMode = MeasureSpec.getMode(widthMeasureSpec);
		int widthSize = MeasureSpec.getSize(widthMeasureSpec);
 
		int heightMode = MeasureSpec.getMode(heightMeasureSpec);
		int heightSize = MeasureSpec.getSize(heightMeasureSpec);
 
		int chosenWidth = chooseDimension(widthMode, widthSize);
		int chosenHeight = chooseDimension(heightMode, heightSize);
 
		int chosenDimension = Math.min(chosenWidth, chosenHeight);
 
		setMeasuredDimension(chosenDimension, chosenDimension);
	}
 
	private int chooseDimension(int mode, int size) {
		if (mode == MeasureSpec.AT_MOST || mode == MeasureSpec.EXACTLY) {
			return size;
		} else { // (mode == MeasureSpec.UNSPECIFIED)
			return getPreferredSize();
		} 
	}
 
	// in case there is no size specified
	private int getPreferredSize() {
		return 300;
	}
 
	private void drawRim(Canvas canvas) {
		// first, draw the metallic body
		canvas.drawOval(rimRect, rimPaint);
		// now the outer rim circle
		canvas.drawOval(rimRect, rimCirclePaint);
	}
 
	private void drawFace(Canvas canvas) {		
		canvas.drawOval(faceRect, facePaint);
		// draw the inner rim circle
		canvas.drawOval(faceRect, rimCirclePaint);
		// draw the rim shadow inside the face
		canvas.drawOval(faceRect, rimShadowPaint);
	}
 
	private void drawScale(Canvas canvas) {
		canvas.drawOval(scaleRect, scalePaint);
 
		canvas.save(Canvas.MATRIX_SAVE_FLAG);
		for (int i = 0; i < totalNicks; ++i) {
			float y1 = scaleRect.top;
			float y2 = y1 - 0.020f;
 
			canvas.drawLine(0.5f, y1, 0.5f, y2, scalePaint);
 
			if (i % 5 == 0) {
				int value = nickToDegree(i);
 
				if (value >= minDegrees && value <= maxDegrees) {
					String valueString = Integer.toString(value);
					canvas.drawText(valueString, 0.5f, y2 - 0.015f, scalePaint);
				}
			}
 
			canvas.rotate(degreesPerNick, 0.5f, 0.5f);
		}
		canvas.restore();		
	}
 
	private int nickToDegree(int nick) {
		int rawDegree = ((nick < totalNicks / 2) ? nick : (nick - totalNicks)) * 2;
		int shiftedDegree = rawDegree + centerDegree;
		return shiftedDegree;
	}
 
	private float degreeToAngle(float degree) {
		return (degree - centerDegree) / 2.0f * degreesPerNick;
	}
 
	private void drawTitle(Canvas canvas) {
		String title = getTitle();
		canvas.drawTextOnPath(title, titlePath, 0.0f,0.0f, titlePaint);				
	}
 
	private void drawLogo(Canvas canvas) {
		canvas.save(Canvas.MATRIX_SAVE_FLAG);
		canvas.translate(0.5f - logo.getWidth() * logoScale / 2.0f, 
						 0.5f - logo.getHeight() * logoScale / 2.0f);
 
		int color = 0x00000000;
		float position = getRelativeTemperaturePosition();
		if (position < 0) {
			color |= (int) ((0xf0) * -position); // blue
		} else {
			color |= ((int) ((0xf0) * position)) << 16; // red			
		}
		//Log.d(TAG, "*** " + Integer.toHexString(color));
		LightingColorFilter logoFilter = new LightingColorFilter(0xff338822, color);
		logoPaint.setColorFilter(logoFilter);
 
		canvas.drawBitmap(logo, logoMatrix, logoPaint);
		canvas.restore();		
	}
 
	private void drawHand(Canvas canvas) {
		if (handInitialized) {
			float handAngle = degreeToAngle(handPosition);
			canvas.save(Canvas.MATRIX_SAVE_FLAG);
			canvas.rotate(handAngle, 0.5f, 0.5f);
			canvas.drawPath(handPath, handPaint);
			canvas.restore();
 
			canvas.drawCircle(0.5f, 0.5f, 0.01f, handScrewPaint);
		}
	}
 
	private void drawBackground(Canvas canvas) {
		if (background == null) {
			Log.w(TAG, "Background not created");
		} else {
			canvas.drawBitmap(background, 0, 0, backgroundPaint);
		}
	}
 
	@Override
	protected void onDraw(Canvas canvas) {
		drawBackground(canvas);
 
		float scale = (float) getWidth();		
		canvas.save(Canvas.MATRIX_SAVE_FLAG);
		canvas.scale(scale, scale);
 
		drawLogo(canvas);
		drawHand(canvas);
 
		canvas.restore();
 
		if (handNeedsToMove()) {
			moveHand();
		}
	}
 
	@Override
	protected void onSizeChanged(int w, int h, int oldw, int oldh) {
		Log.d(TAG, "Size changed to " + w + "x" + h);
 
		regenerateBackground();
	}
 
	private void regenerateBackground() {
		// free the old bitmap
		if (background != null) {
			background.recycle();
		}
 
		background = Bitmap.createBitmap(getWidth(), getHeight(), Bitmap.Config.ARGB_8888);
		Canvas backgroundCanvas = new Canvas(background);
		float scale = (float) getWidth();		
		backgroundCanvas.scale(scale, scale);
 
		drawRim(backgroundCanvas);
		drawFace(backgroundCanvas);
		drawScale(backgroundCanvas);
		drawTitle(backgroundCanvas);		
	}
 
	private boolean handNeedsToMove() {
		return Math.abs(handPosition - handTarget) > 0.01f;
	}
 
	private void moveHand() {
		if (! handNeedsToMove()) {
			return;
		}
 
		if (lastHandMoveTime != -1L) {
			long currentTime = System.currentTimeMillis();
			float delta = (currentTime - lastHandMoveTime) / 1000.0f;
 
			float direction = Math.signum(handVelocity);
			if (Math.abs(handVelocity) < 90.0f) {
				handAcceleration = 5.0f * (handTarget - handPosition);
			} else {
				handAcceleration = 0.0f;
			}
			handPosition += handVelocity * delta;
			handVelocity += handAcceleration * delta;
			if ((handTarget - handPosition) * direction < 0.01f * direction) {
				handPosition = handTarget;
				handVelocity = 0.0f;
				handAcceleration = 0.0f;
				lastHandMoveTime = -1L;
			} else {
				lastHandMoveTime = System.currentTimeMillis();				
			}
			invalidate();
		} else {
			lastHandMoveTime = System.currentTimeMillis();
			moveHand();
		}
	}
 
	// Changement des aiguilles du tachymètre ---------------------------------------
 
	public void onAccuracyChanged(Sensor sensor, int accuracy) {
 
	}
 
 
	public void onSensorChanged(SensorEvent sensorEvent) {
		if (sensorEvent.values.length > 0) {
			float temperatureC = sensorEvent.values[0];
			//Log.i(TAG, "*** Temperature: " + temperatureC);
 
			float temperatureF = (9.0f / 5.0f) * temperatureC + 32.0f;
			setHandTarget(temperatureF);
		} else {
			Log.w(TAG, "Empty sensor event received");
		}
	}
 
	private float getRelativeTemperaturePosition() {
		if (handPosition < centerDegree) {
			return - (centerDegree - handPosition) / (float) (centerDegree - minDegrees);
		} else {
			return (handPosition - centerDegree) / (float) (maxDegrees - centerDegree);
		}
	}
 
	private void setHandTarget(float temperature) {
		if (temperature < minDegrees) {
			temperature = minDegrees;
		} else if (temperature > maxDegrees) {
			temperature = maxDegrees;
		}
		handTarget = temperature;
		handInitialized = true;
		invalidate();
	}
 
	// ---------------------------------------------------------------------------------
}

SimpleXYSeries.java

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package com.Gabriel.android.Interface;
 
import com.androidplot.series.XYSeries;
 
public class SimpleXYSeries implements XYSeries 
{
    private static final int[] vals = {0, 25, 35, 2, 40, 30, 29, 0, 34, 6};
 
    // f(x) = x
 
    public Number getX(int index) 
    {
        return index;
    }
 
 
    // range begins at 0
 
    public Number getMinX() 
    {
        return 0;
    }
 
    // range ends at 9
 
    public Number getMaxX() 
    {
        return 9;
    }
 
 
    public String getTitle() 
    {
        return "Vitesse Instantanée";
    }
 
    // range consists of all the values in vals
 
    public int size() 
    {
        return vals.length;
    }
 
 
    public void onReadBegin() 
    {
 
    }
 
 
    public void onReadEnd() 
    {
 
    }
 
    // return vals[index]
 
    public Number getY(int index) 
    {
        // make sure index isnt something unexpected:
        if(index < 0 || index > 9) 
        {
            throw new IllegalArgumentException("Only values between 0 and 9 are allowed.");
        }
        return vals[index];
    }
 
    // smallest value in vals is 0
 
    public Number getMinY() 
    {
        return 0;
    }
 
    // largest value in vals is 99
 
    public Number getMaxY() 
    {
        return 40;
    }
}

main.xml

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:background="#ffffff"
      >
 
  	<!-- Le TabHost qui contient tous les éléments de nos onglets-->
	<TabHost
		android:id="@+id/TabHost01"
		android:layout_width="fill_parent"
		android:layout_height="fill_parent"
	>
		<LinearLayout
			android:orientation="vertical"
			android:layout_width="fill_parent"
			android:layout_height="fill_parent">
			<!-- TabWidget qui sert à afficher les onglets -->
			<TabWidget android:layout_width="fill_parent" android:id="@android:id/tabs" android:layout_height="wrap_content"></TabWidget>
			<!-- contenu de nos onglets. -->
			<FrameLayout
				android:id="@android:id/tabcontent"
				android:layout_width="fill_parent"
				android:layout_height="fill_parent"
			>
  			<!-- Contenu de l’onglet N°1 -->
			<LinearLayout
				android:orientation="vertical"
				android:layout_width="fill_parent"
				android:layout_height="fill_parent"
				android:scrollbars="vertical"
				android:id="@+id/Onglet1"
				android:background="@drawable/presentation"
			>
			</LinearLayout>
			<!-- Contenu de l’onglet N°2 -->
			<ScrollView
				android:id="@+id/ScrollView01"
				android:layout_width="fill_parent"
				android:layout_height="fill_parent"
			>
			<LinearLayout
				android:orientation="vertical"
				android:layout_width="fill_parent"
				android:layout_height="wrap_content"
				android:id="@+id/Onglet2"
			>
				<LinearLayout
					android:orientation="horizontal"
					android:layout_width="fill_parent"
					android:layout_height="wrap_content"
					android:layout_gravity="left|top"
				>
					<LinearLayout
						android:orientation="horizontal"
						android:layout_width="210px"
						android:layout_height="280px"
						android:gravity="right|center_vertical"
					>
					<ImageView 
    					android:layout_width="wrap_content" 
						android:layout_height="wrap_content"
						android:id="@+id/battery_niveau"
					>
					</ImageView>    
    				<ImageView 
    					android:layout_width="wrap_content" 
						android:layout_height="wrap_content"
						android:id="@+id/battery_anim"
					>
					</ImageView>
					</LinearLayout>
					<LinearLayout
						android:orientation="horizontal"
						android:layout_width="310px"
						android:layout_height="280px"
						android:gravity="right"
						android:weightSum="2.0"
					>
  						<com.Gabriel.android.Interface.Thermometer
						    android:id="@+id/thermometer"
    						android:layout_width="fill_parent"
    						android:layout_height="wrap_content"
    						android:layout_weight="2.0" 
    					/>
					</LinearLayout>
					<LinearLayout 
						android:orientation="vertical"
						android:layout_width="fill_parent"
						android:layout_height="280px"
					>
						<LinearLayout 
							android:orientation="vertical"
							android:layout_width="fill_parent"
							android:layout_height="150px"
							android:gravity="bottom"
						>
							<TextView
								android:text="Heure"
								android:layout_width="wrap_content"
								android:layout_height="wrap_content"
								android:textColor="#000"
								android:textSize="25dip"
							>
							</TextView>
							<!-- Horloge Digital -->
							<DigitalClock
								android:text="Horloge"
								android:id="@+id/DigitalClock01"
								android:layout_width="wrap_content"
								android:layout_height="wrap_content"
								android:textColor="#000"
								android:textSize="40dip"
							>
							</DigitalClock>
						</LinearLayout>
						<LinearLayout 
							android:orientation="vertical"
							android:layout_width="fill_parent"
							android:layout_height="40px"
							android:gravity="bottom"
						>
							<TextView
								android:text="Distance Parcourue"
								android:layout_width="wrap_content"
								android:layout_height="wrap_content"
								android:textColor="#000"
								android:textSize="25dip"
							>
							</TextView>
						</LinearLayout>
					</LinearLayout>	
				</LinearLayout>
				<LinearLayout					
					android:orientation="horizontal"
					android:layout_width="fill_parent"
					android:layout_height="wrap_content"
				>
					<LinearLayout
						android:orientation="horizontal"
						android:layout_width="wrap_content"
						android:layout_height="wrap_content"
						android:gravity="left"
					>
					<!-- Bouton avec une Image--> 
						<ImageButton
							android:id="@+id/ImageButton01"
							android:layout_width="wrap_content"
							android:layout_height="wrap_content"
							android:src="@drawable/haut_parleur"
						>
						<!-- @drawable/icon est une Image qui se trouve dans le dossier /res/
							drawable de notre projet -->
						</ImageButton>
					</LinearLayout>
 
					<LinearLayout
						android:orientation="horizontal"
						android:layout_width="600px"
						android:layout_height="wrap_content"
						android:gravity="center_horizontal"
					>
					<ImageButton
						android:id="@+id/ImageButton04"
						android:layout_width="wrap_content"
						android:layout_height="wrap_content"
						android:src="@drawable/bluetooth_on"
						android:gravity="left"
					>
					</ImageButton>
					<ImageButton
						android:id="@+id/ImageButton02"
						android:layout_width="wrap_content"
						android:layout_height="wrap_content"
						android:src="@drawable/phares"
					>
					</ImageButton>
					<ImageButton
						android:id="@+id/ImageButton05"
						android:layout_width="wrap_content"
						android:layout_height="wrap_content"
						android:src="@drawable/bluetooth_off"
						android:gravity="right"
					>
					</ImageButton>
					</LinearLayout>
 
					<LinearLayout
						android:orientation="horizontal"
						android:layout_width="fill_parent"
						android:layout_height="wrap_content"
						android:gravity="right"
					>
					<ImageButton
						android:id="@+id/ImageButton03"
						android:layout_width="wrap_content"
						android:layout_height="wrap_content"
						android:src="@drawable/frein"
					>
					</ImageButton>
					</LinearLayout>
				</LinearLayout>	
			</LinearLayout>
			</ScrollView>
			<!-- Contenu de l’onglet N°3 -->
			<LinearLayout
				android:orientation="vertical"
				android:layout_width="fill_parent"
				android:layout_height="fill_parent"
				android:id="@+id/Onglet3">
				<com.androidplot.xy.XYPlot
    				android:id="@+id/mySimpleXYPlot"
    				android:layout_width="fill_parent"
    				android:layout_height="fill_parent"
    				android:layout_marginTop="10px"
    				android:layout_marginLeft="10px"
    				android:layout_marginRight="10px"
    				title="Vitesse du Kart en fonction du temps"
    			/>
			</LinearLayout>
  			</FrameLayout>
		</LinearLayout>
	</TabHost>
</LinearLayout>

AndroidManifest.xml

Code :

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.Gabriel.android.Interface"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="8" />
 
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".InterfaceActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".BtInterface">
        </activity>
    </application>
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
	<uses-permission android:name="android.permission.BLUETOOTH" />
</manifest>

Les fichiers Thermometer.java et SimpleXYSeries.java sont 2 objets graphiques et sont pas tres importants en ce moment.

Pourrait quelqu'un me donner un indice par rapport à la raison de cette fermeture soudaine?

Merci