Friday, May 31, 2013

Progress Bar in Android


ProgressBar is used to show the progress of an operation.
Visual indicator of progress in some operation. Displays a bar to the user representing how far the operation has progressed; the application can change the amount of progress (modifying the length of the bar) as it moves forward. There is also a secondary progress displayable on a progress bar which is useful for displaying intermediate progress, such as the buffer level during a streaming playback progress bar.

Progress Bar Example

In this example I have shown the progress while downloading a file.

We can also customize a progress bar to make it more beautiful

 .Read How To Customize Progress Bar


Some More Good  Android Topics
Customizing Toast In Android 
 Showing Toast for Longer Time
Customizing Checkboxes In Android  
Customizing Progress Bar




        android:text="Progress Bar Example" />

        android:text="Start Downloading File" />


Note: To add a progress bar to a layout file, you can use the <ProgressBar> element. By default, the progress bar is a spinning wheel (an indeterminate indicator). To change to a horizontal progress bar, apply the Widget.ProgressBar.Horizontal style, like so:

public class ProgressBarActivity extends Activity

    Button btnStartProgress;
    ProgressDialog progressBar;
    private int progressBarStatus = 0;
    private Handler progressBarHandler = new Handler();

    private long fileSize = 0;

    /** Called when the activity is first created. */
    public void onCreate(Bundle savedInstanceState)

    public void startProgressDialog(View V)

                    // prepare for a progress bar dialog
                    progressBar = new ProgressDialog(V.getContext());
                    progressBar.setMessage("Downloading File...");

                    //reset progress bar status
                    progressBarStatus = 0;

                    //reset filesize
                    fileSize = 0;

                    new Thread(new Runnable() {
                        public void run() {
                            while (progressBarStatus < 100) {

                                    // process some tasks
                                progressBarStatus = fileDownloadStatus();

                                //  sleep 1 second to show the progress
                                try {
                                catch (InterruptedException e) {

                                // Update the progress bar
                       Runnable() {
                                    public void run() {

                            // when, file is downloaded 100%,
                            if (progressBarStatus >= 100) {

                                // sleep 2 seconds, so that you can see the 100% of file download
                                try {
                                } catch (InterruptedException e) {

                                // close the progress bar dialog



  //method returns the % of file downloaded
    public int fileDownloadStatus()

        while (fileSize <= 1000000) {


                       if (fileSize == 100000) {
                            return 10;
                       } else if (fileSize == 200000) {
                           return 20;
                       } else if (fileSize == 300000) {
                          return 30;
                       } else if (fileSize == 400000) {
                          return 40;
                       } else if (fileSize == 500000) {
                          return 50;
                      } else if (fileSize == 600000) {
                         return 60;
            // write your code here


        return 100;


We can also customize a progress bar to make it more beautiful

 .Read How To Customize Progress Bar


Advance Android Topics

                   Customizing Toast In Android 
                   Showing Toast for Longer Time
                   Customizing the Display Time of Toast
                   Using TimePickerDialog and DatePickerDialog In android
                   Animating A Button In Android
                    Populating ListView With DataBase

                    Customizing Checkboxes In Android 
                    Increasin Size of Checkboxes
                    Android ProgressBar
                    Designing For Different Screen Sizes
                    Handling Keyboard Events 

More Android Topics:

Android : Introduction

       Eclipse Setup for Android Development

                     Configuring Eclipse for Android Development

          Begging With Android

                     Creating Your First Android Project
                     Understanding Android Manifest File of your android app

         Working With Layouts

                      Understanding Layouts in Android
                          Working with Linear Layout (With Example)
                                Nested Linear Layout (With Example)
                          Table Layout
                          Frame Layout(With Example)
                         Absolute Layout
                         Grid Layout


                     Activity In Android
                     Activity Life Cycle
                     Starting Activity For Result
                     Sending Data from One Activity to Other in Android
                     Returning Result from Activity

     Working With Views

                     Using Buttons and EditText in Android 
                     Using CheckBoxes in Android 
                     Using AutoCompleteTextView in Android
                     Grid View


                     Customizing Toast In Android
                     Customizing the Display Time of Toast
                     Customizing Toast At Runtime
                     Adding Image in Toast
                     Showing Toast for Longer Time

     Dialogs In Android

                     Working With Alert Dialog
                     Adding Radio Buttons In Dialog
                     Adding Check Boxes In Dialog
                     Creating Customized Dialogs in Android
                    Adding EditText in Dialog

                   Creating Dialog To Collect User Input

                 DatePicker and TimePickerDialog

                              Using TimePickerDialog and DatePickerDialog In android

    Working With SMS

                  How to Send SMS in Android
                  How To Receive SMS
                  Accessing Inbox In Android


               Populating ListView With DataBase

      Menus In Android

                    Creating Option Menu
                    Creating Context Menu In Android


                    Using Telephony Manager In Android

     Working With Incoming Calls

                    How To Handle Incoming Calls in Android
                    How to Forward an Incoming Call In Android
                   CALL States In Android


                   Notifications In Android
                   How To Vibrate The Android Phone
                   Sending Email In Android
                  Opening a webpage In Browser
                   How to Access PhoneBook In Android
                   Prompt User Input with an AlertDialog

   Storage:  Storing Data In Android

               Shared Prefferences  In Android

                             SharedPreferences In Android

               Files: File Handling In Android

                              Reading and Writing files to Internal Stoarage
                              Reading and Writing files to SD Card 

                DataBase : Working With Database

                             Working With Database in Android
                             Creating Table In Android
                             Inserting, Deleting and Updating Records In Table in Android
                             How to Create DataBase in Android
                             Accessing Inbox In Android

     Animation In Android:

                  Animating A Button In Android

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