Develop Reference

How to show UI from Notification

I'm trying to make a simple musicPlayer that works on Android device.To make Background-play come true, I'm using Service class.
What I want to do is below:
1.User launches app and taps start button
2.Music starts and Notification that notes the Music is playing appears
3.User taps home button and the app's UI disappears
4.Music doesn't stop
5.User tap Notification
6.UI appears with disabled start button and enabled stop button ← I'm in trouble
With My Code, UI appears. But it is not the UI which user made to disappear. How do I describe...It is new-ed UI.
So when user taps stop button,of course music doesn't stop. The Service is different one.
I want music to stop.
Is there any way to show the first created UI? the original UI?
If there's no way to show first created UI,how can I reach to first running service?
Thank you for browsing.
My Activity
package com.websarva.wings.android.servicesample;
import androidx.appcompat.app.AppCompatActivity;
import androidx.localbroadcastmanager.content.LocalBroadcastManager;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity implements ServiceConnection {
public static final String LOG_TAG = "ServiceSample:";
private Intent _intent;
public static final String INTENT_ACTION = "intentAction";
private ServiceConnection _connection = new ServiceConnection(){
#Override
public void onServiceConnected(ComponentName name, IBinder service) {
}
#Override
public void onServiceDisconnected(ComponentName name) {
}
};
public void onPlayButtonClick(View view){
Log.e(LOG_TAG,
"#onPlayButtonClick -_intentHash - " + _intent.hashCode()
+ "-_connectionHash" + _connection.hashCode());
bindService(_intent, _connection,Context.BIND_AUTO_CREATE);
startService(_intent);
Button btPlay = findViewById(R.id.btPlay);
btPlay.setEnabled(false);
Button btStop = findViewById(R.id.btStop);
btStop.setEnabled(true);
}
public void onStopButtonClick(View view){
Log.e(LOG_TAG,
"#onStopButtonClick -_intentHash - " + _intent.hashCode()
+ "-_connectionHash" + _connection.hashCode());
unbindService(_connection);
stopService(_intent);
Button btStop = findViewById(R.id.btStop);
btStop.setEnabled(false);
Button btPlay = findViewById(R.id.btPlay);
btPlay.setEnabled(true);
}
private BroadcastReceiver _MessageReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
Button btStop = findViewById(R.id.btStop);
btStop.setEnabled(false);
Button btPlay = findViewById(R.id.btPlay);
btPlay.setEnabled(true);
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LocalBroadcastManager.getInstance(this).registerReceiver(_MessageReceiver,new IntentFilter(INTENT_ACTION));
_intent = getIntent();
boolean isAlreadyPlaying = _intent.getBooleanExtra(SoundManageService.EXTRA_KEY_ISPLAYING,false);
if(isAlreadyPlaying){
Button btPlay = findViewById(R.id.btPlay);
btPlay.setEnabled(false);
Button btStop = findViewById(R.id.btStop);
btStop.setEnabled(true);
}
_intent = new Intent(MainActivity.this,SoundManageService.class);
bindService(_intent, _connection,Context.BIND_AUTO_CREATE);
}
#Override
public void onServiceConnected(ComponentName name, IBinder service) {
}
#Override
public void onServiceDisconnected(ComponentName name) {
}
#Override
public void onDestroy(){
LocalBroadcastManager.getInstance(this).unregisterReceiver(_MessageReceiver);
super.onDestroy();
}
}
My Service
package com.websarva.wings.android.servicesample;
import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.IBinder;
import android.util.Log;
import androidx.core.app.NotificationCompat;
import androidx.lifecycle.LifecycleService;
import androidx.localbroadcastmanager.content.LocalBroadcastManager;
import java.io.IOException;
public class SoundManageService extends LifecycleService{
public static final String CHANNEL_ID = "soundmanagerservice_notification_channel";
public static final int FINISH_NOTIFICATION_ID = 2;
public static final int START_NOTIFICATION_ID = 1;
public static final String EXTRA_KEY_ISPLAYING = "isPlaying";
MediaPlayer _player;
public SoundManageService() {
}
private class PlayerPreparedListener implements MediaPlayer.OnPreparedListener{
#Override
public void onPrepared(MediaPlayer mp) {
mp.start();
NotificationCompat.Builder builder = new NotificationCompat.Builder(SoundManageService.this,CHANNEL_ID);
builder.setSmallIcon(android.R.drawable.ic_dialog_info);
builder.setContentTitle(getString(R.string.msg_notification_title_start));
builder.setContentText(getString(R.string.msg_notification_text_start));
Intent intent = new Intent(SoundManageService.this,MainActivity.class);
intent.putExtra(EXTRA_KEY_ISPLAYING,mp.isPlaying());
PendingIntent stopServiceIntent = PendingIntent.getActivity(
SoundManageService.this,0,intent,PendingIntent.FLAG_CANCEL_CURRENT);
builder.setContentIntent(stopServiceIntent);
builder.setAutoCancel(true);
Notification notification = builder.build();
startForeground(START_NOTIFICATION_ID,notification);
}
}
private class PlayerCompletionListener implements MediaPlayer.OnCompletionListener{
#Override
public void onCompletion(MediaPlayer mp) {
stopSelf();
sendMessage();
}
}
private void sendMessage() {
Intent intent = new Intent(MainActivity.INTENT_ACTION);
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
}
#Override
public void onCreate(){
super.onCreate();
_player = new MediaPlayer();
String channelName = getString(R.string.notification_channnel_name);
int notificationImportance = NotificationManager.IMPORTANCE_DEFAULT;
NotificationChannel notificationChannel = new NotificationChannel(CHANNEL_ID,channelName,notificationImportance);
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(notificationChannel);
}
#Override
public int onStartCommand(Intent intent,int flags,int startId){
super.onStartCommand(intent,flags,startId);
String mediaUriStr ="android.resource://" + getPackageName() + "/" + R.raw.testmusic;
Uri uri = Uri.parse(mediaUriStr);
_player = new MediaPlayer();
try{
_player.setDataSource(SoundManageService.this,uri);
_player.setOnPreparedListener(new PlayerPreparedListener());
_player.setOnCompletionListener(new PlayerCompletionListener());
_player.prepareAsync();
} catch (IOException e) {
Log.e("ServiceSample", "メディアプレーヤー準備失敗");
}
return START_NOT_STICKY;
}
#Override
public IBinder onBind(Intent intent) {
super.onBind(intent);
return null;
}
#Override
public boolean onUnbind(Intent intent){
return true;
}
#Override
public void onDestroy(){
if(_player.isPlaying()){
_player.stop();
}
_player.release();
_player = null;
super.onDestroy();
}
}

Changing the code (creating Intent for PendingIntent for Notification)
Intent intent = new Intent(SoundManageService.this,MainActivity.class);
to
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.setClassName(getApplicationContext().getPackageName(), MainActivity.class.getName());
intent.setFlags(Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED | Intent.FLAG_ACTIVITY_NEW_TASK);
made the problem solved.
https://qiita.com/imp954sti/items/e075fb8a99b68dda8180
↑this Japanese note helped me.

How to receive Messages in chat App using signalR in Android

hello i am new in signalR i am making one chating app with using signalR i take reference from SignalR integration in android studio here with the help of this i able to send the messages to the chat group but i am not able to receive messages i read lots of Q&A here but i am not able to solve this problem i paste here my code and please anyone tell me how do i receive message from the server.following is my code.
Activity main
package myapp.chatapp;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.content.res.Configuration;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.Spinner;
import android.widget.Toast;
import com.google.gson.JsonElement;
import java.util.ArrayList;
import microsoft.aspnet.signalr.client.MessageReceivedHandler;
import microsoft.aspnet.signalr.client.Platform;
import microsoft.aspnet.signalr.client.http.android.AndroidPlatformComponent;
import microsoft.aspnet.signalr.client.hubs.HubConnection;
import microsoft.aspnet.signalr.client.hubs.HubProxy;
import microsoft.aspnet.signalr.client.hubs.SubscriptionHandler2;
import microsoft.aspnet.signalr.client.transport.ClientTransport;
import microsoft.aspnet.signalr.client.transport.LongPollingTransport;
public class MainActivity extends AppCompatActivity implements SignalRService.Something {
private StringBuilder mLog;
private ListView mTestCaseList;
private Spinner mTestGroupSpinner;
private HubConnection mHubConnection;
private HubProxy mHubProxy;
private final Context mContext = this;
private SignalRService mService;
private SignalRService mMessageResive;
private boolean mBound = false;
ListView list_item;
EditText editText;
ArrayList<String> listItems;
ArrayAdapter<String> adapter;
ClientTransport transport;
private Handler mHandler; // to display Toast message
private Thread t;
#Override
public void onConfigurationChanged(Configuration newConfig) {
// don't restart the activity. Just process the configuration change
super.onConfigurationChanged(newConfig);
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent intent = new Intent();
intent.setClass(mContext, SignalRService.class);
bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
editText = (EditText)findViewById(R.id.edit_message);
ImageButton btn = (ImageButton)findViewById(R.id.btn);
list_item = (ListView)findViewById(R.id.list_item);
listItems = new ArrayList<String>();
/*listItems.add("First Item - added on Activity Create");*/
/* adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, listItems);*/
adapter = new ArrayAdapter<String>(mContext,R.layout.custom_list, R.id.textView,listItems);
list_item.setAdapter(adapter);
final Handler handler = new Handler();
handler.postDelayed( new Runnable() {
#Override
public void run() {
adapter.notifyDataSetChanged();
handler.postDelayed( this, 1000 );
}
}, 1000 );
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
listItems.add(editText.getText().toString());
adapter.notifyDataSetChanged();
sendMessage(view);
}
});
}
#Override
protected void onStop() {
// Unbind from the service
if (mBound) {
unbindService(mConnection);
mBound = false;
}
super.onStop();
}
public void sendMessage(View view) {
if (mBound) {
String message = editText.getText().toString();
String email = "kn#yopmail.com";
String name = "Kunal From Android";
String group ="1";
mService.sendMessage(name,email,group,message);
editText.setText("");
// Call a method from the SignalRService.
// However, if this call were something that might hang, then this request should
// occur in a separate thread to avoid slowing down the activity performance.
/*EditText editText = (EditText) findViewById(R.id.edit_message);
if (editText != null && editText.getText().length() > 0) {
}*/
}
}
public void setmMessageResive(JsonElement jsonElement)
{
listItems.add(10, String.valueOf(jsonElement));
}
/**
* Defines callbacks for service binding, passed to bindService()
*/
private final ServiceConnection mConnection = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
// We've bound to SignalRService, cast the IBinder and get SignalRService instance
SignalRService.LocalBinder binder = (SignalRService.LocalBinder) iBinder;
mService = binder.getService();
mBound = true;
}
#Override
public void onServiceDisconnected(ComponentName arg0) {
mBound = false;
}
};
#Override
public void doSomething(String msg) {
listItems.add(msg);
}
}
Service code
package myapp.chatapp;
import android.app.Service;
import android.bluetooth.BluetoothClass;
import android.content.Intent;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.util.Log;
import android.widget.Toast;
import com.google.gson.JsonElement;
import java.util.ArrayList;
import java.util.concurrent.ExecutionException;
import java.util.logging.Logger;
import microsoft.aspnet.signalr.client.Action;
import microsoft.aspnet.signalr.client.Credentials;
import microsoft.aspnet.signalr.client.LogLevel;
import microsoft.aspnet.signalr.client.MessageReceivedHandler;
import microsoft.aspnet.signalr.client.Platform;
import microsoft.aspnet.signalr.client.SignalRFuture;
import microsoft.aspnet.signalr.client.http.Request;
import microsoft.aspnet.signalr.client.http.android.AndroidPlatformComponent;
import microsoft.aspnet.signalr.client.hubs.HubConnection;
import microsoft.aspnet.signalr.client.hubs.HubProxy;
import microsoft.aspnet.signalr.client.hubs.SubscriptionHandler1;
import microsoft.aspnet.signalr.client.hubs.SubscriptionHandler2;
import microsoft.aspnet.signalr.client.hubs.SubscriptionHandler4;
import microsoft.aspnet.signalr.client.transport.ClientTransport;
import microsoft.aspnet.signalr.client.transport.LongPollingTransport;
import microsoft.aspnet.signalr.client.transport.ServerSentEventsTransport;
/**
* Created by NULLPLEX7 on 11/28/2017.
*/
public class SignalRService extends Service {
private HubConnection mHubConnection;
private HubProxy mHubProxy;
private Handler mHandler; // to display Toast message
private final IBinder mBinder = new LocalBinder(); // Binder given to clients
ClientTransport transport;
registerListener registerListener;
private MainActivity setmMessageResive;
public Something list;
public SignalRService() {
}
#Override
public void onCreate() {
super.onCreate();
mHandler = new Handler(Looper.getMainLooper());
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
int result = super.onStartCommand(intent, flags, startId);
startSignalR();
return result;
}
#Override
public void onDestroy() {
mHubConnection.stop();
super.onDestroy();
}
#Override
public IBinder onBind(Intent intent) {
// Return the communication channel to the service.
startSignalR();
return mBinder;
}
/**
* 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 {
public SignalRService getService() {
// Return this instance of SignalRService so clients can call public methods
return SignalRService.this;
}
}
/**
* method for clients (activities)
*/
public void sendMessage(String name, String email, String group, String msg ) {
String SERVER_METHOD_SEND = "BroadCastMessage";
mHubProxy.invoke(SERVER_METHOD_SEND, name,email,group,msg);
}
private void startSignalR() {
Platform.loadPlatformComponent(new AndroidPlatformComponent());
Credentials credentials = new Credentials() {
#Override
public void prepareRequest(Request request) {
request.addHeader("User-Name", "BNK");
}
};
String serverUrl = "myurlhere";
mHubConnection = new HubConnection(serverUrl);
mHubConnection.setCredentials(credentials);
String SERVER_HUB_CHAT = "ChatHub";
mHubProxy = mHubConnection.createHubProxy(SERVER_HUB_CHAT);
ClientTransport clientTransport = new ServerSentEventsTransport(mHubConnection.getLogger());
SignalRFuture<Void> signalRFuture = mHubConnection.start(clientTransport);
mHubProxy.subscribe(this);
transport = new LongPollingTransport(mHubConnection.getLogger());
mHubConnection.start(transport);
/* ****new codes here**** */
/* ****seems useless but should be here!**** */
mHubProxy.subscribe(new Object() {
#SuppressWarnings("unused")
public void newMessage(final String message, final String messageId, final String chatId,
final String senderUserId, final String fileUrl, final String replyToMessageId) {
}
});
try {
signalRFuture.get();
}catch (InterruptedException | ExecutionException e) {
e.printStackTrace();
return;
}
mHubProxy.on("receiveGroupMessage",
new SubscriptionHandler4<String, String, String, String>() {
#Override
public void run(final String name,final String msg ,final String avtar,final String date ) {
final String finalMsg = name + " says " + msg;
/*final String finalMsg = msg;*/
// display Toast message
mHandler.post(new Runnable() {
#Override
public void run() {
list.doSomething(msg);
}
});
}
}
, String.class,String.class,String.class,String.class);
mHubConnection.received(new MessageReceivedHandler() {
#Override
public void onMessageReceived(final JsonElement json) {
Log.e("receiveGroupMessage ", json.toString());
mHandler.post(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(), ""+json, Toast.LENGTH_SHORT).show();
}
});
}
});
}
public interface Something
{
void doSomething(String msg);
}
}
i read on stack overflow that in onMessageReceived i get the server responses but i did not get any response here . I want when any one send message in group from web i want that message in my chat app someone suggest me that i need to create Event listener but i don't no how to create it . please tell me how do i get messages in my chat app.
mHubProxy.on("receiveGroupMessage",
new SubscriptionHandler4<String, String, String, String>() {
#Override
public void run(final String name,final String msg ,final String avtar,final String date ) {
final String finalMsg = name + " says " + msg;
/*final String finalMsg = msg;*/
// display Toast message
mHandler.post(new Runnable() {
#Override
public void run() {
list.doSomething(msg);
}
});
}
}
, String.class,String.class,String.class,String.class);
i thought that i got messages here but execution not go inside the Run.
Any Help is Welcome

Getting NetworkOnMainThreadException creating socket in AsyncTask

how is possible that I am getting android.os.NetworkOnMainThreadException when I try to create a socket calling bulb.connectToHW() if I do it from the doInBackground() method of my asycTask?
This is the code of the AsyncTask:
package com.example.bulbcontrol2;
import java.net.InetAddress;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.AsyncTask;
import android.widget.TextView;
public class AsyncConnection extends AsyncTask<Object, String, String> {
private TextView textV;
private Context context;
private String message;
private Device bulb;
public AsyncConnection(TextView textViewToUpdate,Context context)
{
this.textV = textViewToUpdate;
this.context = context;
}
#Override
protected String doInBackground(Object... params) {
bulb = new Device((InetAddress) params[0],(Integer) params[1]);
BroadcastReceiver receiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("open_connection"))
{
System.out.println(bulb.connectToHW());
message = "Connected";
System.out.println(bulb.dataTransferHW("hello"));
textV.setText(message);
}
if (intent.getAction().equals("close_connection"))
{
message = "Disconnected";
System.out.println(bulb.dataTransferHW("bye"));
bulb.closeConexHW();
}
}
};
IntentFilter filter = new IntentFilter("open_connection");
context.registerReceiver(receiver, filter);
filter.addAction("close_connection");
context.registerReceiver(receiver, filter);
return message;
}
/* protected void onProgressUpdate(String... progress) {
//textV.setText(progress[0]);
}*/
}
And this is the code of the UIThread :
package com.example.bulbcontrol2;
import java.net.InetAddress;
import java.net.UnknownHostException;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.TextView;
import android.widget.ToggleButton;
public class MainActivity extends Activity
{
Intent broadcastIntent = new Intent();
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bulbActions();
}
public void bulbActions()
{
final ToggleButton buttonBulb = (ToggleButton) findViewById(R.id.ToggleBulb);
final ToggleButton buttonLDR = (ToggleButton) findViewById(R.id.ToggleLDRValues);
final TextView txtLDR = (TextView) findViewById(R.id.TxtLDRValues);
byte [] hostBytes = new byte[] {(byte)192,(byte)168,(byte)0,(byte)12};
int port = 5006;
InetAddress host = null;
try
{
host = InetAddress.getByAddress(hostBytes);
}
catch (UnknownHostException e)
{
System.out.println("\nError with server address");
e.printStackTrace();
}
new AsyncConnection((TextView)findViewById(R.id.TxtLDRValues),this.getApplicationContext()).execute(host,port);
buttonBulb.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View arg0)
{
if (buttonBulb.isChecked())
{
System.out.println("Pulsado");
broadcastIntent.setAction("open_connection");
MainActivity.this.sendBroadcast(broadcastIntent);
}
else
{
System.out.println("NO Pulsado");
broadcastIntent.setAction("close_connection");
MainActivity.this.sendBroadcast(broadcastIntent);
}
}
});
}
}

Your doInBackground is just defining a BroadcastReceiver and registering it. All the code inside onReceive will run in the main thread when the system calls it following your onClick.
I don't know why you need a BroadcastReceiver if you're just triggering it from a button.
Instead you could do the network stuff directly on your doInBackground and then actually start the AsyncTask inside onClick.
On a case you do need a BroadcastReceiver what you wanna do is start a service from onReceive and do all the network job in the service.
After API11 you can also use goAsync() in the receiver as described here and start a Thread.

Creating an android service

I'm trying to create a service which will start by the user request in the application.
After the user will choose an update interval, the service will run in the operation system background, and will send a non-relevant message.
I've tried to write the service according to the example for Service class API.
For some reason, I figured in debug (when running doBindService() method) that mUpdateBoundService is getting null.
My second question is whether I can use "Toast" inform message outside an application ? (As kind of a desktop notification).
Can anyone help ? Here is my short code:
UpdateService.java
package android.update;
import java.util.Timer;
import java.util.TimerTask;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.widget.Toast;
public class UpdateService extends Service {
private NotificationManager mNM;
private final IBinder mBinder = new UpdateBinder();
private int updateInterval;
public class UpdateBinder extends Binder {
UpdateService getService() {
return UpdateService.this;
}
}
public void onCreate() {
mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
Timer timer = new Timer();
timer.schedule(new UpdateTimeTask(), 100, updateInterval);
}
public int onStartCommand(Intent intent, int flags, int startId) {
return START_STICKY;
}
class UpdateTimeTask extends TimerTask {
public void run() {
showNotification();
}
}
public void showNotification() {
Toast.makeText(this, "Hi", 10);
}
#Override
public IBinder onBind(Intent intent) {
updateInterval = intent.getExtras().getInt(getString(R.string.keyUpdateInterval));
return mBinder;
}
}
UpdateActivity.java
package android.update;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
public class UpdateActivity extends Activity {
private UpdateService mUpdateBoundService;
private boolean mIsBound = false;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void onClickStartUpdateService(View view) {
switch (view.getId()) {
case R.id.btnStartUpdateService:
doBindService();
//Toast.makeText(this,"Service Started",Toast.LENGTH_LONG).show();
mUpdateBoundService.showNotification();
break;
}
}
private ServiceConnection mConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder service) {
mUpdateBoundService = ((UpdateService.UpdateBinder)service).getService();
}
public void onServiceDisconnected(ComponentName className) {
mUpdateBoundService = null;
}
};
private void doBindService() {
Intent updateActivityIntent = new Intent(UpdateActivity.this,
UpdateService.class);
EditText txtUpdateInterval = (EditText) findViewById(R.id.txtUpdateInterval);
int interval = Integer.parseInt(txtUpdateInterval.getText().toString());
updateActivityIntent.putExtra(getString(R.string.keyUpdateInterval), interval);
bindService(updateActivityIntent, mConnection, Context.BIND_AUTO_CREATE);
mIsBound = true;
}
void doUnbindService() {
if (mIsBound) {
unbindService(mConnection);
mIsBound = false;
}
}
#Override
protected void onDestroy() {
super.onDestroy();
doUnbindService();
}
}

Your toast is not showing because you are not telling it to. Try:
public void showNotification() {
Toast.makeText(this, "Hi", 10).show();
}
For your service issue, I think that you do not properly understand how services & activities work together. A service can run independently of a service, or you can have a service whose lifecycle matches that of a given activity. From your code, it is not clear which of these models you are following. Your implementation will cause the service to wake periodically, but only while your activity is running. If the user switches to another activity, your service will no longer be woken.
If you want a service to wake periodically independently of the activity, then you need to run your timer event in the service itself. Better still use an Alarm to wake your service: Register an Alarm with AlarmManager which will fire an Intent at a future point (or regular intervals, if you prefer), and extend your service from IntentService, override onHandleIntent() and add the necessary Intent Filter to your Service entry in the manifest.

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