android.os.Handler

package com.example.progressdialog;

import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class NotificationTest extends Activity {
    static final int PROGRESS_DIALOG = 0;
    Button button;
    ProgressThread progressThread;
    ProgressDialog progressDialog;
   
    /** Called when the activity is first created. */
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        // Setup the button that starts the progress dialog
        button = (Button) findViewById(R.id.progressDialog);
        button.setOnClickListener(new OnClickListener(){
            public void onClick(View v) {
                showDialog(PROGRESS_DIALOG);
            }
        }); 
    }
   
    protected Dialog onCreateDialog(int id) {
        switch(id) {
        case PROGRESS_DIALOG:
            progressDialog = new ProgressDialog(NotificationTest.this);
            progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
            progressDialog.setMessage("Loading...");
            progressThread = new ProgressThread(handler);
            progressThread.start();
            return progressDialog;
        default:
            return null;
        }
    }

    // Define the Handler that receives messages from the thread and update the progress
    final Handler handler = new Handler() {
        public void handleMessage(Message msg) {
            int total = msg.getData().getInt("total");
            progressDialog.setProgress(total);
            if (total >= 100){
                dismissDialog(PROGRESS_DIALOG);
                progressThread.setState(ProgressThread.STATE_DONE);
            }
        }
    };

    /** Nested class that performs progress calculations (counting) */
    private class ProgressThread extends Thread {
        Handler mHandler;
        final static int STATE_DONE = 0;
        final static int STATE_RUNNING = 1;
        int mState;
        int total;
       
        ProgressThread(Handler h) {
            mHandler = h;
        }
       
        public void run() {
            mState = STATE_RUNNING;   
            total = 0;
            while (mState == STATE_RUNNING) {
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    Log.e("ERROR", "Thread Interrupted");
                }
                Message msg = mHandler.obtainMessage();
                Bundle b = new Bundle();
                b.putInt("total", total);
                msg.setData(b);
                mHandler.sendMessage(msg);
                total++;
            }
        }
        
        /* sets the current state for the thread,
         * used to stop the thread */
        public void setState(int state) {
            mState = state;
        }
    }
}

public class Main extends Activity {
 private static String APP_TAG = "tag";

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

  ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
  List<ActivityManager.RunningServiceInfo> runningServices = activityManager.getRunningServices(50);

  for (int i = 0; i < runningServices.size(); i++) {
   ActivityManager.RunningServiceInfo runningServiceInfo = runningServices.get(i);
   Log.i(APP_TAG, "Process " + runningServiceInfo.process + " with component " + runningServiceInfo.service.getClassName());
  }
 }
}

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

/**
 * Class which shows how to show toast
 * @author FaYnaSoft Labs
 */
public class Main extends Activity {

    private Button clickBtn;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        clickBtn = (Button) findViewById(R.id.click);
        clickBtn.setText("Show message");
        clickBtn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast msg = Toast.makeText(Main.this, "Message", Toast.LENGTH_LONG);
                msg.setGravity(Gravity.CENTER, msg.getXOffset() / 2, msg.getYOffset() / 2);
                msg.show();
            }
        });
    }
}

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

/**
 * Class which shows how to work with handler class
 * @author FaYnaSoft Labs
 */
public class Main extends Activity {

    private Button clickBtn;
    private ProgressDialog progressDialog;
    private Handler handler = new Handler() {

        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            progressDialog.dismiss();
        }
    };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        clickBtn = (Button) findViewById(R.id.click);
        clickBtn.setText("Click me");
        clickBtn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                processThread();
            }
        });
    }

    private void processThread() {
        progressDialog = ProgressDialog.show(Main.this, "", "Doing...");
        new Thread() {
            public void run() {
                longTimeMethod();
                handler.sendEmptyMessage(0);
            }
        }.start();
    }

    private void longTimeMethod() {
        try {
            Thread.sleep(10000);
        } catch (InterruptedException e) {
            Log.e("tag", e.getMessage());
        }
    }
}