android自定义秒表,Android实现的秒表计时器示例

本文实例讲述了Android实现的秒表计时器。分享给大家供大家参考，具体如下：

package com.liu.time;

import java.util.Timer;

import java.util.TimerTask;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.Context;

import android.content.DialogInterface;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.util.Log;

import android.view.KeyEvent;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.ImageButton;

import android.widget.TextView;

public class MyTime extends Activity {

private long mlCount = 0;

private long mlTimerUnit = 100;

private TextView tvTime;

private ImageButton btnStartPause;

private ImageButton btnStop;

private Timer timer = null;

private TimerTask task = null;

private Handler handler = null;

private Message msg = null;

private boolean bIsRunningFlg = false;

private static final String MYTIMER_TAG = "MYTIMER_LOG";

// menu item

private static final int SETTING_TIMER_UNIT_ID = Menu.FIRST;

private static final int ABOUT_ID = Menu.FIRST + 1;

private static final int EXIT_ID = Menu.FIRST + 2;

private static final int SETTING_SECOND_ID = Menu.FIRST + 101;

private static final int SETTING_100MILLISECOND_ID = Menu.FIRST + 102;

// Setting timer unit flag

private int settingTimerUnitFlg = SETTING_100MILLISECOND_ID;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

tvTime = (TextView) findViewById(R.id.tvTime);

btnStartPause = (ImageButton) findViewById(R.id.btnStartPaunse);

btnStop = (ImageButton) findViewById(R.id.btnStop);

SharedPreferences sharedPreferences = getSharedPreferences(<