Develop Reference

Bluetooth app made with library (https://github.com/OmarAflak/Bluetooth-Library) crashes

I'm working on a simple app, essentially to send data over Bluetooth.
My MainActivity:
package in.justrobotics.jrbluetoothcontrol;
import android.app.AlertDialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Handler;
import android.os.SystemClock;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.InputType;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.UUID;
import me.aflak.bluetooth.Bluetooth;
import me.aflak.bluetooth.BluetoothCallback;
import me.aflak.bluetooth.DiscoveryCallback;
public class MainActivity extends AppCompatActivity {
Bluetooth bluetooth;
private ArrayAdapter<String> mBTArrayAdapter;
String address,name;
public void composeEmail(String message) {
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("*/*");
intent.putExtra(android.content.Intent.EXTRA_EMAIL,new String[] { "shlokj#gmail.com" });
intent.putExtra(Intent.EXTRA_SUBJECT, "Would like to get in touch");
intent.putExtra(Intent.EXTRA_TEXT, message);
if (intent.resolveActivity(getPackageManager()) != null) {
startActivity(intent);
}
}
public void sendEmail () {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Send a message: ");
final EditText input = new EditText(this);
input.setInputType(InputType.TYPE_CLASS_TEXT);
builder.setView(input);
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
final String Message = input.getText().toString();
composeEmail(Message);
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.show();
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bluetoothOn();
mBTArrayAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1);
List<BluetoothDevice> devices = new ArrayList<BluetoothDevice>();
bluetooth = new Bluetooth(getApplicationContext());
if (bluetooth==null){
Toast.makeText(getApplicationContext(),"Bluetooth null",Toast.LENGTH_SHORT).show();
}
if (bluetooth!=null){
Toast.makeText(getApplicationContext(),"Bluetooth not null",Toast.LENGTH_SHORT).show();
BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
Set<BluetoothDevice> pairedDevices = mBluetoothAdapter.getBondedDevices();
for (BluetoothDevice device : pairedDevices)
mBTArrayAdapter.add(device.getName() + "\n" + device.getAddress());
}
Button openController = (Button) findViewById(R.id.open_controller);
openController.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent startController = new Intent(MainActivity.this,ControllerActivity.class);
//startController.putExtra("BLUETOOTH_CONNECTED_THREAD",mConnectedThread);
startActivity(startController);
}
});
Button openAccelController = (Button) findViewById(R.id.open_accel_controller);
openAccelController.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent startControllerAccel = new Intent(MainActivity.this,AccelerometerControl.class);
startActivity(startControllerAccel);
}
});
bluetooth.setBluetoothCallback(new BluetoothCallback() {
#Override
public void onBluetoothTurningOn() {
}
#Override
public void onBluetoothOn() {
}
#Override
public void onBluetoothTurningOff() {
}
#Override
public void onBluetoothOff() {
}
#Override
public void onUserDeniedActivation() {
}
});
bluetooth.setDiscoveryCallback(new DiscoveryCallback() {
#Override public void onDiscoveryStarted() {}
#Override public void onDiscoveryFinished() {}
#Override public void onDeviceFound(BluetoothDevice device) {}
#Override public void onDevicePaired(BluetoothDevice device) {}
#Override public void onDeviceUnpaired(BluetoothDevice device) {}
#Override public void onError(String message) {}
});
AlertDialog.Builder alertDialog = new AlertDialog.Builder(MainActivity.this);
LayoutInflater inflater = getLayoutInflater();
View convertView = (View) inflater.inflate(R.layout.dialog_btdevices, null);
alertDialog.setView(convertView);
alertDialog.setTitle("Select your device");
alertDialog.setMessage("A JR Bluetooth device name is of the form JR_X");
ListView devicesListView = (ListView) convertView.findViewById(R.id.mDevicesListView);
devicesListView.setAdapter(mBTArrayAdapter);
devicesListView.setOnItemClickListener(mDeviceClickListener);
alertDialog.show();
}
private AdapterView.OnItemClickListener mDeviceClickListener = new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> av, View v, int arg2, long arg3) {
String connectStatus="";
if (!BluetoothAdapter.getDefaultAdapter().isEnabled()) {
Toast.makeText(getBaseContext(), "Bluetooth not on", Toast.LENGTH_SHORT).show();
return;
}
//mBluetoothStatus.setText("Connecting...");
// Get the device MAC address, which is the last 17 chars in the View
String info = ((TextView) v).getText().toString();
address = info.substring(info.length() - 17);
Toast.makeText(getBaseContext(), address, Toast.LENGTH_SHORT).show();
name = info.substring(0, info.length() - 17);
if (bluetooth.isConnected()){
connectStatus="Connected";
}
if (!bluetooth.isConnected()){
connectStatus="Not connected";
}
Toast.makeText(getBaseContext(), connectStatus, Toast.LENGTH_SHORT).show();
bluetooth.connectToAddress(address);
Toast.makeText(getBaseContext(), "Connected (hopefully)", Toast.LENGTH_SHORT).show();
bluetooth.send("test");
Toast.makeText(getBaseContext(), "Sent data (hopefully)", Toast.LENGTH_SHORT).show();
}};
#Override
protected void onStart() {
super.onStart();
bluetooth.onStart();
bluetooth.enable();
}
#Override
protected void onStop() {
super.onStop();
bluetooth.onStop();
}
private void bluetoothOn(){
if (!BluetoothAdapter.getDefaultAdapter().isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, 1);
//mBluetoothStatus.setText("Bluetooth enabled");
Toast.makeText(getApplicationContext(),"Bluetooth turned on",Toast.LENGTH_SHORT).show();
}
else{
Toast.makeText(getApplicationContext(),"Bluetooth is already on", Toast.LENGTH_SHORT).show();
}
}
}
Stack traces:
2019-04-09 20:16:48.222 23737-23737/in.justrobotics.jrbluetoothcontrol E/AndroidRuntime: FATAL EXCEPTION: main
Process: in.justrobotics.jrbluetoothcontrol, PID: 23737
java.lang.NullPointerException: Attempt to invoke virtual method 'void java.io.OutputStream.write(byte[])' on a null object reference
at me.aflak.bluetooth.Bluetooth.send(Bluetooth.java:185)
at me.aflak.bluetooth.Bluetooth.send(Bluetooth.java:201)
at in.justrobotics.jrbluetoothcontrol.MainActivity$7.onItemClick(MainActivity.java:197)
at android.widget.AdapterView.performItemClick(AdapterView.java:310)
at android.widget.AbsListView.performItemClick(AbsListView.java:1164)
at android.widget.AbsListView$PerformClick.run(AbsListView.java:3154)
at android.widget.AbsListView$3.run(AbsListView.java:4097)
at android.os.Handler.handleCallback(Handler.java:754)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:163)
at android.app.ActivityThread.main(ActivityThread.java:6238)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
The custom Bluetooth class: https://github.com/OmarAflak/Bluetooth-Library/blob/master/bluetooth/src/main/java/me/aflak/bluetooth/Bluetooth.java
My code is crashing at the line bluetooth.send("test"); with a NullPointerException, and I can't see why. I'm a beginner with Bluetooth on Android; help will be appreciated.
The final outcome I hope I will be able to get is to simply connect to a device and send data, and even that isn't happening.
Edit: I'm facing another problem as well now. I pass the String address to the second activity (https://gist.github.com/shlokj/12c4e2c62ca0f5284c5c3c041775654f) from the first activity (https://gist.github.com/shlokj/f80d0902ad1a366ab03e178164968cfb) through an intent. There, I try to connect at line 163 (bluetoothObject.connectToAddress(address);), and it crashes with a NullPointerException. I have no idea why, because I check that the Bluetooth object and address are not null with an if statement. Stack traces: https://gist.github.com/shlokj/56e3c9e311dea6f77a1acd8953a317c8 Whole repository: https://github.com/shlokj/JR-Bluetooth-Control.
So, in a nutshell, I now need to be also able to connect properly, leave alone sending data.

I just went through the library link you provided and it seems someone else faced the similar issue given here:
https://github.com/OmarAflak/Bluetooth-Library/issues/16
And it turned out be the connection wasn't established yet,so before calling send please check if the device is connected by using isConnected() function.
You shouldn't call send before the connection is established properly.you can set callback for the same using setDiscoveryCallback and do work inside most probable after you get confirmation in void onDevicePaired(BluetoothDevice device).
Edit 1: from the comments.
Are you sure it is in onDevicePaired() that I am supposed to send
data?
Maybe not,I think i misunderstood the example given by library author,now i think you should do it on onDeviceConnected.
Is there any other method that gets called when it is connected?
Yes,you can set a callback for that using following:
bluetooth.setDeviceCallback(new DeviceCallback() {
#Override
public void onDeviceConnected(BluetoothDevice device) {
// do your work here.
}
#Override
public void onDeviceDisconnected(BluetoothDevice device, String message) {
}
#Override
public void onMessage(String message) {
}
#Override
public void onError(String message) {
}
#Override
public void onConnectError(BluetoothDevice device, String message) {
}
});
Edit 2:
There, I try to connect at line
163(bluetoothObject.connectToAddress(address);), and it crashes with a
NullPointerException.
This crash happens because BluetoothAdapter isn't initialized yet,so when you call bluetoothObject.connectToAddress(address) it throws NullPointerException.
You need to initialize that before connecting as following:
bluetoothObject = new Bluetooth(getApplicationContext());
bluetoothObject.onStart();//this is the line that initializes adapter.
bluetoothObject.enable();

Service not working properly

I'm supposed to add a timer to my service class that prints a message to LogCat every 10 seconds. Nothing in the service class is printing once I call the startService method and I have no idea why.. Any ideas?
package com.murach.reminder;
import android.content.Intent;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class ReminderActivity extends Activity implements OnClickListener {
private Button startServiceButton;
private Button stopServiceButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_reminder);
startServiceButton = (Button) findViewById(R.id.startServiceButton);
stopServiceButton = (Button) findViewById(R.id.stopServiceButton);
startServiceButton.setOnClickListener(this);
stopServiceButton.setOnClickListener(this);
}
#Override
public void onClick(View v) {
Intent serviceIntent = new Intent(this, ReminderService.class);
switch (v.getId()) {
case R.id.startServiceButton:
// put code to start service and display toast here
startService(serviceIntent);
Toast.makeText(this, "Service started", Toast.LENGTH_SHORT).show();
break;
case R.id.stopServiceButton:
// put code to stop service and display toast here
stopService(serviceIntent);
Toast.makeText(this, "Service stopped", Toast.LENGTH_SHORT).show();
break;
}
}
}
package com.murach.reminder;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
import java.util.Timer;
import java.util.TimerTask;
public class ReminderService extends Service
{
private Timer timer;
public void onCreate()
{
Log.d("Reminder", "Service created");
startTimer();
}
#Override
public IBinder onBind(Intent intent)
{
Log.d("Reminder", "No binding for this activity");
return null;
}
public void onDestroy()
{
Log.d("Reminder", "Service destroyed");
stopTimer();
}
private void startTimer() {
TimerTask task = new TimerTask() {
public void run() {
Log.d("Reminder", "Timer task executed");
}
};
timer = new Timer(true);
int delay = 1000 * 10;
int interval = 1000 * 10;
timer.schedule(task, delay, interval);
}
private void stopTimer()
{
if (timer != null)
{
timer.cancel();
}
}
}
And here is how I register the service in the Manifest (in a service element, it wouldn't let me type it out completely)
android:name="com.murach.reminder.ReminderService"

The package names do not match. There is a spelling mistake in the word murach in your Manifest declaration.

Exchange between activity and a service

I have two activities and one service all in one app
activity2 will start and stop the service
activity1 is the main UI
the service have two supposed tasks:
1- receive data from a server though a socket and pass it to activity1 to update the user interface
2- receive data from activity1 and send it to the sever
the problem is i wasn't able to have a clear idea about how i can make the service exchange data with the activity
i read about AIDL , Binding here http://developer.android.com/guide/components/bound-services.html
i couldn't apply it on my codes, even after three weeks of hard work i didn't get it !!!
thank you !
service:
public class NetService extends Service {
public static Client client = new Client("192.168.1.5");
Thread call;
BufferedWriter out;
int a;
String a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15;
public static int get = 5;
Intent intent2;
NotificationManager mNM;
private final IBinder mBinder = new LocalBinder();
/**
* Class used for the client Binder. Because we know this service always
* runs in the same process as its clients, we don't need to deal with IPC.
*/
public class LocalBinder extends Binder {
NetService getService() {
return NetService.this;
}
}
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return mBinder;
}
#Override
public void onCreate() {
super.onCreate();
mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
showNotification();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
a1 ="Hello everyone !!"
new Thread(new Runnable(){
public void run() {
try {
client.connectToServer();
} catch (IOException e) {
e.printStackTrace();
}
try {
client.setstream();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
while(true){
try {
client.getFromServer();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
try {
out.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
client.sendToServer();
} catch (IOException e) {
e.printStackTrace();
}
try {
Thread.sleep(2000);
} catch (InterruptedException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
}
}
}).start();
return super.onStartCommand(intent, flags, startId);
}
#Override
public void onDestroy() {
client.closeall();
super.onDestroy();
}
private void showNotification() {
// In this sample, we'll use the same text for the ticker and the expanded notification
CharSequence text = ("remote_service_started");
// Set the icon, scrolling text and timestamp
Notification notification = new Notification(R.drawable.togon, text,
System.currentTimeMillis());
// The PendingIntent to launch our activity if the user selects this notification
PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
new Intent(this, Connect.class), 0);
// Set the info for the views that show in the notification panel.
notification.setLatestEventInfo(this, ("remote_service_label"),
text, contentIntent);
// Send the notification.
// We use a string id because it is a unique number. We use it later to cancel.
mNM.notify(R.string.remote_service_started, notification);
}}
UI activity :
package com.bannob.shms;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import com.bannob.shms.NetService.LocalBinder;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.graphics.Typeface;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnPreparedListener;
import android.net.Uri;
import android.os.Bundle;
import android.os.IBinder;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Switch;
import android.widget.Toast;
import android.widget.TextView;
import android.widget.ToggleButton;
import android.widget.VideoView;
import android.widget.ViewFlipper;
public class Main extends Activity {
public static ViewFlipper vf, lightvf, secvf;
private Float oldTouchValue;
public static TextView tv1, lighttv, sectv, tvlight1, tvlight2, tvlight3,
tvlight4, gasactivetv, flameactivetv, mdetect1tv, automodtv, indoortv, hmdtv;
public static LinearLayout wallpaper, fansbanner;
public static ToggleButton envtog1, envtog2, envtog3, envtog4;
public static Switch lights1, lights2, lights3, lights4;
public static VideoView vview;
public static ImageView safeiv1, safeiv2, seciv1, seciv2, secbubble, safebubble;
Typeface tf;
BufferedReader in = null;
File file;
File values;
String[] valuesArray= new String[30];
int a;
String a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20;
NetService mService;
boolean mBound = false;
/**********************************************************************/
/* Look for the definitions of the previous declarations below !!!! */
/**********************************************************************/
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); // reference to activity_main.Xml at layout Folder
TextView tv1 = (TextView) findViewById ()
onStart();
tv1.setText(mService.a1);
#Override
protected void onStart() {
super.onStart();
// Bind to LocalService
Intent intent = new Intent(this, NetService.class);
bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
}
#Override
protected void onStop() {
super.onStop();
// Unbind from the service
if (mBound) {
unbindService(mConnection);
mBound = false;
}
}
/** Defines callbacks for service binding, passed to bindService() */
private ServiceConnection mConnection = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName className,
IBinder service) {
// We've bound to LocalService, cast the IBinder and get LocalService instance
LocalBinder binder = (LocalBinder) service;
mService = binder.getService();
mBound = true;
}
#Override
public void onServiceDisconnected(ComponentName arg0) {
mBound = false;
}
};
}
second activity (which start the service):
package com.bannob.shms;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class Connect extends Activity {
EditText conet1;
Button con ;
public static Boolean state = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.connect);
con = (Button) findViewById(R.id.conb1);
conet1 = (EditText) findViewById(R.id.conet1);
con.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
if(state == false ){
startService(new Intent(getBaseContext(), NetService.class));
state = true;
con.setText("Disconnect");
}
else{
stopService(new Intent(getBaseContext(), NetService.class));
state = false;
con.setText("Connect");
}
}
});
}
}

Recommended way
BroadCastReceiver & sendBroadcast
in you activities register a BroadcastReciver
IntentFilter newFileReceiverfilter = new IntentFilter(App.INTENT_NEW_FILE_COMMING ) ;
registerReceiver(newfileReceiver, newFileReceiverfilter);
newfileReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context arg0, Intent in) {
Log.i("FileName", in.getStringExtra(IntentExtrasKeys.NF_FILE_NAME) + "");
}
}
in you Service broadCast an Intent with the data you want to send as Extra
Intent intent = new Intent(App.INTENT_NEW_FILE_COMMING);
intent.putExtra(IntentExtrasKeys.NF_FILE_NAME, "img2.jpg" ) ;
ctx.sendBroadcast(intent);
to send more data to the service from the activities just send more Intents
there is dirty way u can let the service write it vaule in static class and read the static class from the activities

ACTION_UMS_CONNECTED not getting flag

i got some problem with checkout weather device is connected with PC or not? so i have found that intent action ACTION_UMS_CONNECTED is used to get flag to check weather device is connected with PC or not.
i have tried one example but i cant able to get any flag.... I have past code here
package com.Mediamount;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.widget.Toast;
public class Mediamount extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
IntentFilter filter = new IntentFilter();
this.registerReceiver(mIntentReceiver, filter);
}
private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
boolean queryRestart = false;
if (action.equals(Intent.ACTION_UMS_CONNECTED)) {
Toast.makeText(getBaseContext(), "asdasd", Toast.LENGTH_LONG).show();
} else if (action.equals(Intent.ACTION_SCREEN_ON)) {
} else if (action.equals(Intent.ACTION_SCREEN_OFF)) {
} else if (action.equals(TelephonyManager.ACTION_PHONE_STATE_CHANGED)) {
}
}
};
}
Is there anything are missing in manifest file so please tell me.
Update:
package com.Mediamount;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.widget.Toast;
public class Mediamount extends Activity {
public static BroadcastReceiver mReceiver1 = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
IntentFilter mIntentFilter = new IntentFilter(Intent.ACTION_UMS_CONNECTED);
// install an intent filter to receive SD card related events.
IntentFilter intentFilter1 = new IntentFilter
(Intent.ACTION_MEDIA_MOUNTED);
intentFilter1.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
intentFilter1.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED);
intentFilter1.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
intentFilter1.addAction(Intent.ACTION_MEDIA_EJECT);
// install an intent filter to receive UMS(USB) related events.
intentFilter1.addAction(Intent.ACTION_UMS_CONNECTED);
intentFilter1.addAction(Intent.ACTION_UMS_DISCONNECTED);
intentFilter1.addAction("USB_INTENT");
intentFilter1.addDataScheme("file");
mReceiver1 = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, context.toString(),Toast.LENGTH_LONG).show();
String action = intent.getAction();
if (action.equals(Intent.ACTION_MEDIA_MOUNTED)) {
//Toast.makeText(context, "SD Card mounted",Toast.LENGTH_LONG).show();
} else if (action.equals
(Intent.ACTION_MEDIA_UNMOUNTED)) {
// Toast.makeText(context, "SD Card unmounted",Toast.LENGTH_LONG).show();
} else if (action.equals
(Intent.ACTION_MEDIA_SCANNER_STARTED)) {
// Toast.makeText(context, "SD Card scanner started",Toast.LENGTH_LONG).show();
//System.out.println("SD Card scanner started");
} else if (action.equals
(Intent.ACTION_MEDIA_SCANNER_FINISHED)) {
// Toast.makeText(context, "SD Card scanner finished",Toast.LENGTH_LONG).show();
} else if (action.equals(Intent.ACTION_MEDIA_EJECT)) {
// Toast.makeText(context, "SD Card eject",Toast.LENGTH_LONG).show();
} else if(action.equals(Intent.ACTION_UMS_CONNECTED))
{
// Toast.makeText(context, "connected",Toast.LENGTH_LONG).show();
} else if(action.equals
(Intent.ACTION_UMS_DISCONNECTED)) {
// Toast.makeText(context, "disconnected",Toast.LENGTH_LONG).show();
}
// BONG_TEST }
}
};
registerReceiver(mReceiver1, intentFilter1);
}}

starting/stopping service multiple times not working

I am writing a simple service application, below is the code of Activity and Service..,when I am calling startService(), and stopService() its working fine for the one time,in my case it has to give notification..from next time onwards if call again startService(), and stopService() its not giving desired results...
---------- this is my activity class -------------
package com.mypack.serviceex;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
public class serviceex extends Activity implements Button.OnClickListener{
/** Called when the activity is first created. */
Button bt1,bt2;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
bt1 = (Button) findViewById(R.id.Button01);
bt2 = (Button) findViewById(R.id.Button02);
bt1.setOnClickListener(this);
bt2.setOnClickListener(this);
}
#Override
public void onClick(View v) {
if( v == bt1)
{
Intent i = new Intent(serviceex.this,myservice.class);
Log.i("err","onClick(View v....");
startService(i);
}
else if(v == bt2)
{
Intent i = new Intent(serviceex.this,myservice.class);
Log.i("err","else if(v == bt2)........");
stopService(i);
}
}
}
--------- this is my service -------------
package com.mypack.serviceex;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
public class myservice extends Service
{
private NotificationManager nmgr;
public void onCreate()
{
super.onCreate();
nmgr = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Log.i("err","onCreate..........");
Thread th = new Thread(null,new incls(),"service...");
}
public void onStart(Intent intent,int sid)
{
super.onStart(intent, sid);
Log.i("err","onStart........");
}
public void onDestroy()
{
super.onDestroy();
Log.i("err","onDestroy..........");
displayMessage("Stopping Service");
}
public void displayMessage(String str)
{
Log.i("err.","displayMessage.....");
Notification nf = new Notification(R.drawable.icon,str,System.currentTimeMillis());
PendingIntent pi = PendingIntent.getActivity(this, 0, new Intent(this,myservice.class), 0);
nf.setLatestEventInfo(this, "Service...", str, pi);
nmgr.notify(R.string.uid, nf);
}
private class incls implements Runnable
{
public void run()
{
Log.i("err","public void run()..........");
System.out.println("In Runnn");
}
}
#Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
}

None of your methods are #Overrideing the class methods. You have to annote them with #Override. Also, on 2.1 you should use onStartCommand() instead of onStart(). And also note that calling startService() multiple times will only call onCreate() once