android Stopwatch实例

         Stopwatch 实例
[java]
package net.baisoft.stopwatch;

import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity implements Runnable {

    /**
     * ��ǰ��ʱ��
     */
    private long time = 0;

    /**
     * ��ʼʱ��
     */
    private long startTime;

    private Handler handler;

    /**
     * ��ʾʱ��
     */
    private TextView timeView;

    /**
     * ��б��ʾ�ּ�ʱ��
     */
    private ListView listView;

    /**
     * ��ʼ��ť
     */
    private Button startButton;

    /**
     * ��ͣ��ť
     */
    private Button pauseButton;

    /**
     * �ּǰ�ť
     */
    private Button markButton;

    /**
     * ��ð�ť
     */
    private Button resetButton;

    /**
     * �ּ�ʱ��
     */
    private List<Long> marks;

    /**
     * ��ĵ�ǰ״̬
     * ��Ϊ��С��ͣ��ֹͣ��״̬
     */
    private int state = 0;

    private static int STATE_RUNNING = 1;
    private static int STATE_STOP = 0;
    private static int STATE_PAUSE = 2;


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

        //��ȡ��Ϣ��ƫ��
        readEnvironment();
        Toast.makeText(this, "��Ѷ�ȡ", Toast.LENGTH_LONG).show();

        //��ʼ��ť
        startButton = (Button)findViewById(R.id.start);
        startButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                onStartClick(view);
            }
        });

        //��ͣ��ť
        pauseButton = (Button)findViewById(R.id.pause);
        pauseButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                onPauseClick(view);
            }
        });

        //�ּǰ�ť
        markButton = (Button) findViewById(R.id.mark);
        markButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                onMarkClick(view);
            }
        });

        //��ð�ť
        resetButton = (Button) findViewById(R.id.reset);
        resetButton.setOnClickListener(new OnClickListener() {
            @Override

补充：移动开发 , Android ,