Calling the PHP web service in android and fetch the result in Android

Suppose the url of the php webservice is as follow :

http://XX.XX.XXX.XX/~serverji/home_expanditure/gethistory.php?uid=4&month=10&year=2012

XX.XX.XXX.XX stands for the server IP.

And the response from the this url is like this :

{"date":["2012-10-13","2012-10-11","2012-10-08"],"category":["The Food Expense","rent","Communication costs"],"description":["nasto","google","fii"],"expenditure":["40","100","123"]}

Then we have to go for this kind of requesting to the url :


public class HistoryDto {
  String date;
  String category;
  String descri;
  float expe;
}


static String url = "http://XX.XX.XX.XXX/~serverji/home_expanditure/";


public static ArrayList<HistoryDto> gethistory(int month, String year) {
String result = "";
InputStream is = null;
ArrayList<HistoryDto> hisList = new ArrayList<HistoryDto>();

ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("uid", Myapplication
.getuserID()));
nameValuePairs.add(new BasicNameValuePair("month", "" + month));
nameValuePairs.add(new BasicNameValuePair("year", year));

try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url + "gethistory.php?");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
} catch (Exception e) {
Log.e("log_tag", "Error in http connection " + e.toString());
}
// convert response to string
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result = sb.toString().trim();

} catch (Exception e) {
Log.e("log_tag", "Error converting result " + e.toString());
}

try {
JSONObject jObj = new JSONObject(result);
JSONArray JArray_date = jObj.getJSONArray("date");
JSONArray JArray_cat = jObj.getJSONArray("category");
JSONArray JArray_dis = jObj.getJSONArray("description");
JSONArray JArray_exp = jObj.getJSONArray("expenditure");
for (int i = 0; i < JArray_date.length(); i++) {
HistoryDto dto = new HistoryDto();
dto.date = JArray_date.getString(i);
dto.category = JArray_cat.getString(i);
dto.descri = JArray_dis.getString(i);
dto.expe = (float) JArray_exp.getDouble(i);

hisList.add(dto);
}

} catch (JSONException e) {
e.printStackTrace();
}
return hisList;
}



This is how we got the result to the ArrayList and populate in the android Activities.

Make the thread to display timer for the Games using the method to Display Time in HH:MM:SS format

Firstly make one static variable for the counter for the timer which increase the every sec.

static int con = 0;

Now make one thread in which it sleeps every one sec and display it in runOnUiThread. This thread used to Display the counter in HH:MM:SS format using the simply one formatTime method.


new Thread(new Runnable() {
@Override
public void run() {
while (true) {
runOnUiThread(new Runnable() {
@Override
public void run() {
counter.setText(formatTime(Long.parseLong("" + con)));
con++;
}
});
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}).start();


The formatTime method to display the counter in HH:MM:SS format is below.



private String formatTime(long millis) {
String output = "00:00:00";
long seconds = millis;
long minutes = seconds / 60;
long hours = minutes / 60;

seconds = seconds % 60;
minutes = minutes % 60;
hours = hours % 60;

String minutesD = String.valueOf(minutes);
String hoursD = String.valueOf(hours);

if (minutes < 10)
minutesD = "0" + minutes;
if (hours < 10)
hoursD = "0" + hours;

output = hoursD + " : " + minutesD;
return output;
}



This is how we can put the Timer in Game or any part of coding where the difference between the time is needed at that time also we can set the kind of methods.

Getting contact list from the phone

just copy the below code in your android code and see the LOGCAT.

import android.app.Activity;

import android.content.ContentResolver;

import android.database.Cursor;

import android.os.Bundle;

import android.provider.ContactsContract;

public class GetContactsDemo extends Activity {

@Override

   public void onCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

       setContentView(R.layout.main);

       readContacts();

   }

 

   public void readContacts(){

        ContentResolver cr = getContentResolver();

        Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,

               null, null, null, null);

 

        if (cur.getCount() > 0) {

           while (cur.moveToNext()) {

               String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));

               String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));

               if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {

                   System.out.println("name : " + name + ", ID : " + id);

 

                   // get the <span id="IL_AD10" class="IL_AD">phone number</span>

                   Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,

                                          ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?",

                                          new String[]{id}, null);

                   while (pCur.moveToNext()) {

                         String phone = pCur.getString(

                                pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));

                         System.out.println("phone" + phone);

                   }

                   pCur.close();

 

 

                   // get email and type

 

                  Cursor emailCur = cr.query(

                           ContactsContract.CommonDataKinds.Email.CONTENT_URI,

                           null,

                           ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = ?",

                           new String[]{id}, null);

                   while (emailCur.moveToNext()) {

                       // This would allow you get several email addresses

                           // if the email addresses were stored in an array

                       String email = emailCur.getString(

                                     emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));

                       String emailType = emailCur.getString(

                                     emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.TYPE));

 

                     System.out.println("Email " + email + " Email Type : " + emailType);

                   }

                   emailCur.close();

 

                   // Get note.......

                   String noteWhere = ContactsContract.Data.CONTACT_ID + " = ? AND " + ContactsContract.Data.MIMETYPE + " = ?";

                   String[] noteWhereParams = new String[]{id,

                   ContactsContract.CommonDataKinds.Note.CONTENT_ITEM_TYPE};

                           Cursor noteCur = cr.query(ContactsContract.Data.CONTENT_URI, null, noteWhere, noteWhereParams, null);

                   if (noteCur.moveToFirst()) {

                       String note = noteCur.getString(noteCur.getColumnIndex(ContactsContract.CommonDataKinds.Note.NOTE));

                     System.out.println("Note " + note);

                   }

                   noteCur.close();

 

                   //Get Postal Address....

 

                   String addrWhere = ContactsContract.Data.CONTACT_ID + " = ? AND " + ContactsContract.Data.MIMETYPE + " = ?";

                   String[] addrWhereParams = new String[]{id,

                       ContactsContract.CommonDataKinds.StructuredPostal.CONTENT_ITEM_TYPE};

                   Cursor addrCur = cr.query(ContactsContract.Data.CONTENT_URI,

                               null, null, null, null);

                   while(addrCur.moveToNext()) {

                       String poBox = addrCur.getString(

                                    addrCur.getColumnIndex(ContactsContract.CommonDataKinds.StructuredPostal.POBOX));

                       String street = addrCur.getString(

                                    addrCur.getColumnIndex(ContactsContract.CommonDataKinds.StructuredPostal.STREET));

                       String city = addrCur.getString(

                                    addrCur.getColumnIndex(ContactsContract.CommonDataKinds.StructuredPostal.CITY));

                       String state = addrCur.getString(

                                    addrCur.getColumnIndex(ContactsContract.CommonDataKinds.StructuredPostal.REGION));

                       String postalCode = addrCur.getString(

                                    addrCur.getColumnIndex(ContactsContract.CommonDataKinds.StructuredPostal.POSTCODE));

                       String country = addrCur.getString(

                                    addrCur.getColumnIndex(ContactsContract.CommonDataKinds.StructuredPostal.COUNTRY));

                       String type = addrCur.getString(

                                    addrCur.getColumnIndex(ContactsContract.CommonDataKinds.StructuredPostal.TYPE));

 

                       // Do something with these....

 

                   }

                   addrCur.close();

 

                   // Get Instant Messenger.........

                   String imWhere = ContactsContract.Data.CONTACT_ID + " = ? AND " + ContactsContract.Data.MIMETYPE + " = ?";

                   String[] imWhereParams = new String[]{id,

                       ContactsContract.CommonDataKinds.Im.CONTENT_ITEM_TYPE};

                   Cursor imCur = cr.query(ContactsContract.Data.CONTENT_URI,

                           null, imWhere, imWhereParams, null);

                   if (imCur.moveToFirst()) {

                       String imName = imCur.getString(

                                imCur.getColumnIndex(ContactsContract.CommonDataKinds.Im.DATA));

                       String imType;

                       imType = imCur.getString(

                                imCur.getColumnIndex(ContactsContract.CommonDataKinds.Im.TYPE));

                   }

                   imCur.close();

 

                   // Get Organizations.........

 

                   String orgWhere = ContactsContract.Data.CONTACT_ID + " = ? AND " + ContactsContract.Data.MIMETYPE + " = ?";

                   String[] orgWhereParams = new String[]{id,

                       ContactsContract.CommonDataKinds.Organization.CONTENT_ITEM_TYPE};

                   Cursor orgCur = cr.query(ContactsContract.Data.CONTENT_URI,

                               null, orgWhere, orgWhereParams, null);

                   if (orgCur.moveToFirst()) {

                       String orgName = orgCur.getString(orgCur.getColumnIndex(ContactsContract.CommonDataKinds.Organization.DATA));

                       String title = orgCur.getString(orgCur.getColumnIndex(ContactsContract.CommonDataKinds.Organization.TITLE));

                   }

                   orgCur.close();

               }

           }

      }

   }

}

You can get the all contacts in your Logcat. Just give the permission to the menifest for reading the contact.

Keep screen on when the Activity running using power manager

First of all make the object of the Power manage.

protected PowerManager.WakeLock mWakeLock;


Now in onCreate method use the following to make the screen ON in the particular activity.

final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
this.mWakeLock = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK, "My Tag");
this.mWakeLock.acquire();

Finding the index of the Array from the given value

Let's say there is a number of values in array like the following.

int[] array = {1,2,3,4,5,6};

Arrays.asList(array).indexOf(4);

This will returns the index of the value in array.

passing the Double values to the String

result = number1/number2
String stringdouble= Double.toString(result);
textview1.setText(stringdouble));

or you can use the nuberformate also.

Double result = number1/number2;
NumberFormat nm = NumberFormat.getNumberInstance();
textview1.setText(nm.format(result));


For 3 decimal digit
private static DecimalFormat REAL_FORMATTER = new DecimalFormat("0.###");
textview1.setText(REAL_FORMATTER.format(result));

DOM parsing using xml

Put the following code in the xml file.

<Books>

    <Book>
        <Name>Cryptography</Name>
        <Author>Harish</Author>
        <Price>$200</Price>
    </Book>
    <Book>
        <Name>Android</Name>
        <Author>Harish</Author>
        <Price>$250</Price>
    </Book>
</Books>

Method to parse this as the xml file and read in the method.

public HashMap doDomParsing(String strUrl, String strParent, String[] child)
{
       HashMap hmap, hmapchild = null;
       URL url;
       hmap = new HashMap();
       
       try
       {
           //url = new URL(strUrl);
           
           DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
           DocumentBuilder db = dbf.newDocumentBuilder();

          Document doc = db.parse(new InputSource(getClass().getResourceAsStream("/res/raw/parse.xml")));

           
           NodeList nodeList = doc.getElementsByTagName("item");
           for (int i = 0; i < nodeList.getLength(); i++)
           {
               
               Node node = nodeList.item(i);
               NodeList properties = node.getChildNodes();
               
               hmapchild = new HashMap();
               
               for(int j=0 ; j < properties.getLength() ; j++)
               {
                   Node property = properties.item(j);
                   String nodename = property.getNodeName();
                   Log.e("Node NAME", nodename);
                   
                   for(int inew =0 ;inew < child.length ; inew++)
                   {
                       if(nodename.equalsIgnoreCase(child[inew]))
                       {
                           hmapchild.put(nodename, property.getFirstChild().getNodeValue());
                       }
                   }
               }
               hmap.put(i, hmapchild);
           }
       }
       catch (Exception e)
       {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }
       
       return  hmap;
}

How to get the battery level And the phone number of the phone

For the bettery level of the phone we need to write the following code.

private void batteryLevel() {
             BroadcastReceiver batteryLevelReceiver = new BroadcastReceiver() {
                       public void onReceive(Context context, Intent intent) {
                                    context.unregisterReceiver(this);
                                    int rawlevel = intent.getIntExtra("level", -1);
                                    int scale = intent.getIntExtra("scale", -1);
                                    int level = -1;
                                    if (rawlevel >= 0 && scale > 0) {
                                                       level = (rawlevel * 100) / scale;
                                    }
             batterLevel.setText("Battery Level Remaining: " + level + "%");
         }
        };
   IntentFilter batteryLevelFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
   registerReceiver(batteryLevelReceiver, batteryLevelFilter);
}


Here level indicates the bettery level of the phone.


For getting the phone number of the phone we have to insert the following code...


TelephonyManager phoneManager = (TelephonyManager) getApplicationContext()                            

                                                                     .getSystemService(Context.TELEPHONY_SERVICE);

String phoneNumber = phoneManager.getLine1Number();

Here phoneNumber indicates the number of the current phone.

Display a Random Number in android on button click

To generate random number in Android, class java.util.Random can be used.

This class java.util.Random provides methods that generates pseudo-random numbers of different types, such as int, long, double, and float.

It support two public constructor:
Random() - Construct a random generator with the current time of day in milliseconds as the initial state.
Random(long seed) - Construct a random generator with the given seed as the initial state.

Put the following code in the main.xml.

<?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"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Generate Random number"
android:id="@+id/generate"
/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/generatenumber"
/>
</LinearLayout>

RandomNumber.java

import java.util.Random;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class RandomNumber extends Activity {
/** Called when the activity is first created. */
             @Override
             public void onCreate(Bundle savedInstanceState) {
                        super.onCreate(savedInstanceState);
                        setContentView(R.layout.main);

                        final Random myRandom = new Random();

                        Button buttonGenerate = (Button)findViewById(R.id.generate);
                        final TextView textGenerateNumber = (TextView)findViewById(R.id.generatenumber);

                        buttonGenerate.setOnClickListener(new OnClickListener(){

                                 @Override
                                 public void onClick(View v) {
                                      // TODO Auto-generated method stub
                                      textGenerateNumber.setText(String.valueOf(myRandom.nextInt()));
                                  }

                      });
       }
}

Android Text to Speech

TextToSpeech is the great feature of Android. Text to Speech (TTS) which speaks the text in different languages usually selected by the user or you can also put the default user language for the TTS.
First of all make the xml file with the one EditText and Button. And make the following code working in your java file for the TTS. You need to implement the Interface of the TTS TextToSpeech.OnInitListener.

import java.util.Locale;
import android.app.Activity;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class AndroidTextToSpeechActivity extends Activity implements
TextToSpeech.OnInitListener {
/** Called when the activity is first created. */

private TextToSpeech tts;
private Button btnSpeak;
private EditText txtText;

@Override
public void onCreate(Bundle savedInstanceState) {
                       super.onCreate(savedInstanceState);
                       setContentView(R.layout.main);

                       tts = new TextToSpeech(this, this);
                       btnSpeak = (Button) findViewById(R.id.btnSpeak);
                       txtText = (EditText) findViewById(R.id.txtText);

                       // button on click event
                       btnSpeak.setOnClickListener(new View.OnClickListener() {

                                            @Override
                                            public void onClick(View arg0) {
                                                             TTS();
                                             }

                        });
                }

           @Override
           public void onDestroy() {
                     // Don't forget to shutdown tts!
                     if (tts != null) {
                     tts.stop();
                     tts.shutdown();
            }
            super.onDestroy();
            }

            @Override
            public void onInit(int status) {

                           if (status == TextToSpeech.SUCCESS) {
                           int result = tts.setLanguage(Locale.US);
                           if (result == TextToSpeech.LANG_MISSING_DATA
                                                 || result == TextToSpeech.LANG_NOT_SUPPORTED) {
                                                 Log.e("TTS", "This Language is not supported");
                            }

                            else

                           {
                                           btnSpeak.setEnabled(true);
                                           TTS();
                            }

                      }

                      else 

                      {
                                Log.e("TTS", "Initilization Failed!");
             }

        }

        private void TTS() {

                   String text = txtText.getText().toString();

                   tts.speak(text, TextToSpeech.QUEUE_FLUSH, null);
          }
}


You can change the language by the oneline code 

tts.setLanguage(Locale.CHINESE);

tts.setLanguage(Locale.GERMANY);

You can select the speed of the speaking via putting the setPitch() method.Default value is 1.0 of the pitch rate.You can select the pitch rate higher or lower according to the requirement.

tts.setPitch(0.6);

The speed rate can be set using setSpeechRate(). This also will take default of 1.0 value. You can double the speed rate by setting 2.0 or make half the speed level by setting 0.5.

tts.setSpeechRate(1.5);

Creating the Options Menu and Itemselected methods in android

You can use the following code inside the menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu
xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/menu1"
android:alphabeticShortcut="s"
android:title="menu1 title"
/>
<item
android:id="@+id/menu2"
android:alphabeticShortcut="t"
android:title="menu2 title"
/>
</menu>
now the two methods for the invoking the menu and function which is to be called on the item selected.

@override
public boolean onCreateOptionsMenu (Menu menu){
super.onCreateOptionsMenu(menu);
//menu.add(R.menu.main_menu);
//menu.add(Menu.NONE, 101,Menu.FIRST,this.getResources().getString(R.string.Title));
MenuInflater mi = getMenuInflater();
mi.inflate(R.menu.main_menu, menu);
return true;
}



you can use the both the method of invoking the menu. First one by the menu.add and second one by the inflating the menu.xml file Now on the itemselectedlistner is used by the following code.

public boolean onOptionsItemSelected(MenuItem item){
              switch(item.getItemId()){
                       case R.id.menu1:
                       // your code here
                       case R.id.menu2:
                       // your code here
               }
     return false;
}


just pass the id in switch-case and do whatever you want by selecting the those menu.

Maintaining the state of the User in Android application throughout

you can use the Application class in you activity. By extending the Application class you can maintain the stat in android throughout the application. It means you can call those variables in the application in all the activity.

public class SampleApplication extends Application {

private static String username;
private static String password;

@Override
public void onCreate() {
super.onCreate();
username="";
password="";
}

public static String getUsername() {
return username;
}

public static void setUsername(String username) {
SampleApplication.username = username;
}

public static String getPassword() {
return password;
}

public static void setPassword(String password) {
SampleApplication.password = password;
}


}

By using this code you can set and get the username and password in any activity. And maintain the state of your username and password. Just you need to add the class name in the manifest.xml like this way.

<application
android:name=".SampleApplication"
android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".SampleApp"
android:label="@string/app_name"
>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

You can access you application variables with static getters and setters from any activity or service.:

SampleApplication.setUsername("");
String currentUserName=SampleApplication.getUsername();
SampleApplication.setPassword("");
String currentPassword=SampleApplication.getPassword();




By this you can maintain the stat of the user in all over the application.

Checking the network Availability

You can check the network is available or not in your android device.

public boolean isNetworkAvailable() 

{

   ConnectivityManager cm=                        

                 (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);

   NetworkInfo networkInfo = cm.getActiveNetworkInfo(); 

   // if no network is available networkInfo will be null, otherwise check if we are connected 

   if (networkInfo != null && networkInfo.isConnected()) 

   { 

             return true; 

    }

 return false; 
}

OR





package com.network.availibility;


import android.app.Activity;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.widget.TextView;


public class NetworkAvailibilityActivity extends Activity {
    /** Called when the activity is first created. */
private boolean isconnected;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        
        TextView tx = (TextView)findViewById(R.id.ischeking);
        
        
        isconnected = isConnected(NetworkAvailibilityActivity.this);
        
        if(isconnected == true){
        tx.setText("You are connected to the internet");
        }
        else{
        tx.setText("Please connect your phone to internet");
        }
        
        
    }
    public static boolean isConnected(Context context) {
    
    ConnectivityManager cm = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);


    NetworkInfo wifiNetwork =
    cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
    
    NetworkInfo mobileNetwork =
    cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
    
    NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
    if (wifiNetwork.isAvailable()) {
    return wifiNetwork.isConnectedOrConnecting();
    }


    
    else if (mobileNetwork.isAvailable()) {
    return mobileNetwork.isConnectedOrConnecting();
    }


    
    else if(activeNetwork.isAvailable()) {
    return activeNetwork.isConnectedOrConnecting();
    }
    else{
    return false;
    }
 }
}

You just need to give the permission of the INTERNET and  ACCESS_NETWORK_STATE.

Run the ProgresBar using the Handler

First of all create tha main.xml file and insert the following code into it.


<?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" >

 <ProgressBar android:id="@+id/progressBar1" style="?       

          android:attr/progressBarStyleHorizontal" 

          android:layout_width="match_parent" 

          android:layout_height="wrap_content" 

          android:indeterminate="false" 

          android:max="10" 

          android:padding="4dip" >

 </ProgressBar>

      <Button android:id="@+id/button1" 

        android:layout_width="wrap_content" 

        android:layout_height="wrap_content" 

        android:onClick="startProgress" 

        android:text="Start Progress" > 

</Button> 

</LinearLayout>

Now make an java file and insert the following code into it.

public class ProgressBar extends Activity { 

                             private Handler handler; 

                             private ProgressBar progress;

/** Called when the activity is first created. */ 

                @Override  

                 public void onCreate(Bundle savedInstanceState) { 

                     super.onCreate(savedInstanceState); 

                     setContentView(R.layout.main); 

                     progress = (ProgressBar) findViewById(R.id.progressBar1); 

                     handler = new Handler(); 

             } 

    public void startProgress(View view) { 

                 // Do something long 

                 Runnable runnable = new Runnable() { 

                           @Override public void run() 

                            { 

                                    for (int i = 0; i <= 10; i++) { 

                                             final int value = i; 

                                             try { 

                                                   Thread.sleep(2000); 

                                                   }

                                             catch (InterruptedException e) { 

                                                     e.printStackTrace(); 

                                              }

                  handler.post(new Runnable() { 

                                @Override public void run() { 

                                                 progress.setProgress(value); 

                                     } 

                            }); 

                        }

                   } 

               }; 

                    new Thread(runnable).start(); 

               }

}

Run your application. Once you press your button the ProgressBar will get updated from the background thread.