So, I saw on a site a program to use a bluetooth connection to a microcontroller, but as you can see below...
06-20 15:11:02.937: D/AndroidRuntime(218): Shutting down VM
06-20 15:11:02.937: W/dalvikvm(218): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
06-20 15:11:02.937: E/AndroidRuntime(218): Uncaught handler: thread main exiting due to uncaught exception
06-20 15:11:03.047: E/AndroidRuntime(218): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{depthermique.transfert.bluetooth/depthermique.transfert.bluetooth.TransfertBluetooth}: java.lang.ClassNotFoundException: depthermique.transfert.bluetooth.TransfertBluetooth in loader dalvik.system.PathClassLoader@43d0bae8
06-20 15:11:03.047: E/AndroidRuntime(218): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417)
06-20 15:11:03.047: E/AndroidRuntime(218): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
06-20 15:11:03.047: E/AndroidRuntime(218): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
06-20 15:11:03.047: E/AndroidRuntime(218): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
06-20 15:11:03.047: E/AndroidRuntime(218): at android.os.Handler.dispatchMessage(Handler.java:99)
06-20 15:11:03.047: E/AndroidRuntime(218): at android.os.Looper.loop(Looper.java:123)
06-20 15:11:03.047: E/AndroidRuntime(218): at android.app.ActivityThread.main(ActivityThread.java:4363)
06-20 15:11:03.047: E/AndroidRuntime(218): at java.lang.reflect.Method.invokeNative(Native Method)
06-20 15:11:03.047: E/AndroidRuntime(218): at java.lang.reflect.Method.invoke(Method.java:521)
06-20 15:11:03.047: E/AndroidRuntime(218): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
06-20 15:11:03.047: E/AndroidRuntime(218): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
06-20 15:11:03.047: E/AndroidRuntime(218): at dalvik.system.NativeStart.main(Native Method)
06-20 15:11:03.047: E/AndroidRuntime(218): Caused by: java.lang.ClassNotFoundException: depthermique.transfert.bluetooth.TransfertBluetooth in loader dalvik.system.PathClassLoader@43d0bae8
06-20 15:11:03.047: E/AndroidRuntime(218): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
06-20 15:11:03.047: E/AndroidRuntime(218): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
06-20 15:11:03.047: E/AndroidRuntime(218): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
06-20 15:11:03.047: E/AndroidRuntime(218): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
06-20 15:11:03.047: E/AndroidRuntime(218): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2409)
06-20 15:11:03.047: E/AndroidRuntime(218): ... 11 more
06-20 15:11:03.121: I/dalvikvm(218): threadid=7: reacting to signal 3
06-20 15:11:03.138: I/dalvikvm(218): Wrote stack trace to '/data/anr/traces.txt'
...It didn't go as planned.
I don't relly think it's something I changed that caused that, because I changed only one or two things. It's just a hope though.
I already made reaserch on the web, and on this site, but, even though there is problems looking like mine, it wasn't specific enough with what I had.
Talking about code, there it is :
MonApp.java
package depthermique.transfert.bluetooth;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
@SuppressLint("HandlerLeak")
public class MonApp extends Activity implements OnClickListener
{
private TextView logview;
private EditText sendtext;
private Button connect, send;
private BtInterface bt = null;
private long lastTime = 0;
@SuppressLint("HandlerLeak")
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");
}
else if(co == 2)
{
logview.append("Disconnected\n");
}
}
};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_transfert_bluetooth);
bt = new BtInterface(handlerStatus, handler);
logview = (TextView)findViewById(R.id.logView);
sendtext = (EditText)findViewById(R.id.sendtxt);
connect = (Button)findViewById(R.id.connect);
connect.setOnClickListener(this);
send = (Button)findViewById(R.id.send);
send.setOnClickListener(this);
}
@Override
public void onClick(View v)
{
if(v == connect)
{
bt.connect();
}
else if(v == send)
{
bt.sendData(sendtext.getText().toString());
}
}
}
Btinterface.java
package depthermique.transfert.bluetooth;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Set;
import java.util.UUID;
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;
public class BtInterface {
private BluetoothDevice device = null; //le périphérique (le module bluetooth)
private BluetoothSocket socket = null;
private InputStream receiveStream = null; //Canal de reception
private OutputStream sendStream = null; //Canal d'émission
private ReceiverThread receiverThread;
Handler handler;
//On récupère la liste des périphériques associés
public BtInterface(Handler hstatus, Handler h)
{
Set<BluetoothDevice> setpairedDevices = BluetoothAdapter.getDefaultAdapter().getBondedDevices();
BluetoothDevice[] pairedDevices = (BluetoothDevice[]) setpairedDevices.toArray(new BluetoothDevice[setpairedDevices.size()]);
//On parcours la liste pour trouver notre module bluetooth
for(int i=0;i<pairedDevices.length;i++)
{
//On teste si ce périphérique contient le nom du module bluetooth connecté au microcontroleur
if(pairedDevices[i].getName().contains("ModuleBluetooth"))
{
device = pairedDevices[i];
try
{
//On récupère la socket de notre périphérique
socket = device.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
receiveStream = socket.getInputStream(); //Canal de réception (valide uniquement après la connection)
sendStream = socket.getOutputStream(); //Canal d'émission (valide uniquement aptès la connection)
}
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(); //Tentative de connection
Message msg = handler.obtainMessage();
msg.arg1 = 1;
handler.sendMessage(msg);
receiverThread.start();
//Connexion réussie
}
catch (IOException e) {
//Echec de la connection
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;
}
private class ReceiverThread extends Thread
{
Handler handler;
ReceiverThread(Handler h)
{
handler = h;
}
@Override public void run()
{
while(true)
{
try
{
if(receiveStream.available() > 0)
{
byte buffer[] = new byte[100];
int k = receiveStream.read(buffer, 0, 100);
if(k > 0) {
byte rawdata[] = new byte[k];
for(int i=0;i<k;i++)
rawdata[i] = buffer[i];
String data = new String(rawdata);
Message msg = handler.obtainMessage();
Bundle b = new Bundle();
b.putString("receivedData", data);
msg.setData(b);
handler.sendMessage(msg);
}
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
}
}
activity_transfert_bluetooth.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="@+id/connect"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="Connection" >
</Button>
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<EditText
android:id="@+id/sendtxt"
android:layout_width="224dp"
android:layout_height="wrap_content"
android:text="" >
</EditText>
<Button
android:id="@+id/send"
android:layout_width="94dp"
android:layout_height="wrap_content"
android:text="Envoyer" >
</Button>
</LinearLayout>
<TextView
android:id="@+id/logView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:bufferType="editable" />
</LinearLayout>
And, that's it.
If that's something obvious, I'm sorry that I couldn't see it, I started "learning" android just two days ago and I'm not that familiar either with Java.
I hope someone will be able to help me with this.
Edit :
I add here the AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest
xmlns:android="http://schemas.android.com/apk/res/android"
package="depthermique.transfert.bluetooth"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-sdk
android:minSdkVersion="7"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="depthermique.transfert.bluetooth.TransfertBluetooth"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
https://stackoverflow.com/questions/17215248
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