androids

intent on wifi signal strength change

INTENT ON WIFI SIGNAL STRENGTH 
CHANGE

declare the manifest as shown below 

<manifest ... >
  ...
  <application ... >
      <service android:name=".ExampleService" />
      ...
  </application>
</manifest>

here's an example of implementation of IntentService 

public class HelloIntentService extends IntentService {

  /**
   * A constructor is required, and must call the super IntentService(String)
   * constructor with a name for the worker thread.
   */
  public HelloIntentService() {
      super("HelloIntentService");
  }

  /**
   * The IntentService calls this method from the default worker thread with
   * the intent that started the service. When this method returns, IntentService
   * stops the service, as appropriate.
   */
  @Override
  protected void onHandleIntent(Intent intent) {
      // Normally we would do some work here, like download a file.
      // For our sample, we just sleep for 5 seconds.
      long endTime = System.currentTimeMillis() + 5*1000;
      while (System.currentTimeMillis() < endTime) {
          synchronized (this) {
              try {
                  wait(endTime - System.currentTimeMillis());
              } catch (Exception e) {
              }
          }
      }
  }
}

For example, onStartCommand() must return
the default implementation (which is how the intent gets delivered to onHandleIntent()):   

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    Toast.makeText(this, "service starting", Toast.LENGTH_SHORT).show();
    return super.onStartCommand(intent,flags,startId);
}

--------------------------------------------------------------------------------------------------

same code but work by implementation of services

public class HelloService extends Service {
  private Looper mServiceLooper;
  private ServiceHandler mServiceHandler;

  // Handler that receives messages from the thread
  private final class ServiceHandler extends Handler {
      public ServiceHandler(Looper looper) {
          super(looper);
      }
      @Override
      public void handleMessage(Message msg) {
          // Normally we would do some work here, like download a file.
          // For our sample, we just sleep for 5 seconds.
          long endTime = System.currentTimeMillis() + 5*1000;
          while (System.currentTimeMillis() < endTime) {
              synchronized (this) {
                  try {
                      wait(endTime - System.currentTimeMillis());
                  } catch (Exception e) {
                  }
              }
          }
          // Stop the service using the startId, so that we don't stop
          // the service in the middle of handling another job
          stopSelf(msg.arg1);
      }
  }

  @Override
  public void onCreate() {
    // Start up the thread running the service.  Note that we create a
    // separate thread because the service normally runs in the process's
    // main thread, which we don't want to block.  We also make it
    // background priority so CPU-intensive work will not disrupt our UI.
    HandlerThread thread = new HandlerThread("ServiceStartArguments",
            Process.THREAD_PRIORITY_BACKGROUND);
    thread.start();

    // Get the HandlerThread's Looper and use it for our Handler
    mServiceLooper = thread.getLooper();
    mServiceHandler = new ServiceHandler(mServiceLooper);
  }

  @Override
  public int onStartCommand(Intent intent, int flags, int startId) {
      Toast.makeText(this, "service starting", Toast.LENGTH_SHORT).show();

      // For each start request, send a message to start a job and deliver the
      // start ID so we know which request we're stopping when we finish the job
      Message msg = mServiceHandler.obtainMessage();
      msg.arg1 = startId;
      mServiceHandler.sendMessage(msg);

      // If we get killed, after returning from here, restart
      return START_STICKY;
  }

  @Override
  public IBinder onBind(Intent intent) {
      // We don't provide binding, so return null
      return null;
  }

  @Override
  public void onDestroy() {
    Toast.makeText(this, "service done", Toast.LENGTH_SHORT).show();
  }
}

-------------------------------------------------------------------------------------------------

notification for the status bar

Notification notification = new Notification(R.drawable.icon, getText(R.string.ticker_text),
        System.currentTimeMillis());
Intent notificationIntent = new Intent(this, ExampleActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
notification.setLatestEventInfo(this, getText(R.string.notification_title),
        getText(R.string.notification_message), pendingIntent);
startForeground(ONGOING_NOTIFICATION_ID, notification);

-------------------------------------------------------------------------------------------------

implementing the lifecycle callbacks

public class ExampleService extends Service {
    int mStartMode;       // indicates how to behave if the service is killed
    IBinder mBinder;      // interface for clients that bind
    boolean mAllowRebind; // indicates whether onRebind should be used

    @Override
    public void onCreate() {
        // The service is being created
    }
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        // The service is starting, due to a call to startService()
        return mStartMode;
    }
    @Override
    public IBinder onBind(Intent intent) {
        // A client is binding to the service with bindService()
        return mBinder;
    }
    @Override
    public boolean onUnbind(Intent intent) {
        // All clients have unbound with unbindService()
        return mAllowRebind;
    }
    @Override
    public void onRebind(Intent intent) {
        // A client is binding to the service with bindService(),
        // after onUnbind() has already been called
    }
    @Override
    public void onDestroy() {
        // The service is no longer used and is being destroyed
    }
}      

---------------------------------------------------------------------------------------------

click here for a source page  

registration form in html

REGISTRATION FORM IN HTML
well for beginners in  HTML ,should make registration form .
It will tell you that how graphics are made.
there is a code of  registration form in HTML-

<!doctype html>

   
        <style type="text/css">

            body {font-family:Arial, Sans-Serif;}

            #container {width:300px; margin:0 auto;}

            /* Nicely lines up the labels. */
            form label {display:inline-block; width:140px;}

            /* You could add a class to all the input boxes instead, if you like. That would be safer, and more backwards-compatible */
            form input[type="text"],
            form input[type="password"],
            form input[type="email"] {width:160px;}

            form .line {clear:both;}
            form .line.submit {text-align:right;}

        </style>
   
   
        <div id="container">
            <form>
                <h1>Create Logon</h1>
                <div class="line"><label for="username">Username *: </label><input type="text" id="username" /></div>
                <div class="line"><label for="pwd">Password *: </label><input type="password" id="pwd" /></div>
                <!-- You may want to consider adding a "confirm" password box also -->
                <div class="line"><label for="surname">Surname *: </label><input type="text" id="surname" /></div>
                <div class="line"><label for="other_names">Other Names *: </label><input type="text" id="names" /></div>
                <div class="line"><label for="dob">Date of Birth *: </label><input type="text" id="dob" /></div>
                <div class="line"><label for="email">Email *: </label><input type="email" id="email" /></div>
                <!-- Valid input types: http://www.w3schools.com/html5/html5_form_input_types.asp -->
                <div class="line"><label for="tel">Telephone: </label><input type="text" id="tel" /></div>
                <div class="line"><label for="add">Address *: </label><input type="text" id="add" /></div>
                <div class="line"><label for="ptc">Post Code *: </label><input type="text" id="ptc" /></div>
                <div class="line submit"><input type="submit" value="Submit" /></div>

                <p>Note: Please make sure your details are correct before submitting form and that all fields marked with * are completed!.</p>
            </form>
        </div>
   
</!doctype>