Progressbar Togther with Asynctask

Android AsyncTask Progress bar

Please try this

public class LoadData extends AsyncTask<Void, Void, Void> {
    ProgressDialog progressDialog;
    //declare other objects as per your need
    @Override
    protected void onPreExecute()
    {
        progressDialog= ProgressDialog.show(YourActivity.this, "Progress Dialog Title Text","Process Description Text", true);

        //do initialization of required objects objects here                
    };      
    @Override
    protected Void doInBackground(Void... params)
    {   

         //do loading operation here  
        return null;
    }       
    @Override
    protected void onPostExecute(Void result)
    {
        super.onPostExecute(result);
        progressDialog.dismiss();
    };
 }

You can call this using

LoadData task = new LoadData();
task.execute();

AsyncTask with a ProgressDialog and Progress Bar

Add Style to your progress dialog with before you show it .setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

Android custom progress indicator while doing AsyncTask

If you need more control over your ProgressBar, you can use WindowManager to add a view on top of everything. It can be done without any additional layout, activities or windows. You can control animation, touches, position and visibility just like in case of regular view. Fully working code:

final ProgressBar view = new ProgressBar(TestActivity.this);
view.setBackgroundColor(0x7f000000);
final LayoutParams windowParams = new WindowManager.LayoutParams();
windowParams.gravity = Gravity.CENTER;
windowParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
windowParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
windowParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
        | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
        | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;
windowParams.format = PixelFormat.TRANSLUCENT;
windowParams.windowAnimations = 0;

new AsyncTask<Integer, Integer, Integer>() {
    public void onPreExecute() {
        // init your dialog here;
        getWindowManager().addView(view, windowParams);
    }

    public void onPostExecute(Integer result) {
        getWindowManager().removeView(view);
        // process result;
    }

    @Override
    protected Integer doInBackground(Integer... arg0) {
        // do your things here
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null;
    }
}.execute();

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