gistfile1.java

package pl.twigit.timertry;

import android.os.Handler;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.os.Build;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import java.util.Date;
import java.util.GregorianCalendar;

public class MainActivity extends ActionBarActivity {

    private TextView timerTextView;
    private Button   startButton;
    private int      counter;
    private static final String TAG = "TWIGIT";
    private GregorianCalendar targetDate;
    Handler  timerHandler  = new Handler();

    Runnable timerRunnable = new Runnable() {
        @Override
        public void run() {
            long mlSecondToGo = MainActivity.this.targetDate.getTimeInMillis() - System.currentTimeMillis();
            MainActivity.this.timerTextView.setText(Long.toString(mlSecondToGo));
            Log.v(MainActivity.TAG, Integer.toString(MainActivity.this.counter));
            MainActivity.this.timerHandler.postDelayed(this,1000);
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    /*
        if (savedInstanceState == null) {
            getSupportFragmentManager().beginTransaction()
                    .add(R.id.container, new PlaceholderFragment())
                    .commit();
        }
        */

        this.targetDate = new GregorianCalendar(2013,11,5,23,0,0);

        System.currentTimeMillis();

        this.timerTextView = (TextView) this.findViewById(R.id.timer_text_view);
        this.startButton   = (Button)   this.findViewById(R.id.start_button);

//
        this.startButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                MainActivity.this.timerTextView.setText("Clicked");
                MainActivity.this.timerRunnable.run();
            }
        });


    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        switch (item.getItemId()) {
            case R.id.action_settings:
                return true;
        }
        return super.onOptionsItemSelected(item);
    }

}