java翻译到mono C#实现系列(4) 利用CountDownTimer类实现倒计时功能 mono版

群里的朋友问利用CountDownTimer类实现倒计时功能怎么实现,我就百度了,参考http://blog.csdn.net/qq344429461/article/details/7521361写了个mono版的.

本人菜鸟,请各位多多指点,不足之处,请斧正.没啥技术含量,就权当丰富下mono for android的小代码.

using System;



using Android.App;

using Android.Content;

using Android.Runtime;

using Android.Views;

using Android.Widget;

using Android.OS;

using Java.Util;



namespace AndroidApplication5

{

    [Activity(Label = "AndroidApplication5", MainLauncher = true, Icon = "@drawable/icon")]

    public class Activity1 : Activity

    {

        private MyCount mc;

        private TextView tv;



        protected override void OnCreate(Bundle savedInstanceState)

        {

            base.OnCreate(savedInstanceState);

            // Set our view from the "main" layout resource

            SetContentView(Resource.Layout.Main);

            tv = (TextView)FindViewById(Resource.Id.MyButton);   

            mc = new MyCount(this,70000, 1000);

            mc.Start();

        }

        public class MyCount : CountDownTimer

        {

            private Activity context = null;

            TextView tv ;

            public  MyCount(Activity Activity,long millisInFuture, long countDownInterval): base(millisInFuture, countDownInterval)

            {

                this.context = Activity;

                tv = (TextView)context.FindViewById(Resource.Id.MyButton);  

            }

            public override void OnTick(long millisUntilFinished)

            { 

                DateTime date=new DateTime(millisUntilFinished);

                String str = date.ToString();

                Console.WriteLine(str);

                tv.SetText("请等待70秒(" + millisUntilFinished / 1000 + ")...", TextView.BufferType.Normal);  

            }

            public override void OnFinish()

            {

                tv.Text = "finish";

            }

        }

        public override void Finish()

        {

            base.Finish();

            mc.Cancel();

        }  

    }

}

原java版

public class MainActivity extends Activity {  

    private MyCount mc;  

    private TextView tv;  

      

    @Override  

    public void onCreate(Bundle savedInstanceState) {  

        super.onCreate(savedInstanceState);  

        setContentView(R.layout.main);  

        tv = (TextView)findViewById(R.id.show);   

        mc = new MyCount(70000, 1000);   

        mc.start();   

    }  

    class MyCount extends CountDownTimer{  

  

        public MyCount(long millisInFuture, long countDownInterval) {  

            super(millisInFuture, countDownInterval);  

            System.out.println("你好");  

        }  

        @Override  

        public void onTick(long millisUntilFinished) {  

            Date date = new Date(millisUntilFinished);  

            SimpleDateFormat sdf = new SimpleDateFormat("hh:mm:ss");  

            String str = sdf.format(date);  

            System.out.println(str);  

            tv.setText("请等待70秒("+millisUntilFinished / 1000 +")...");  

        }  

        @Override  

        public void onFinish() {  

            tv.setText("finish");  

        }  

    }  

    @Override  

    protected void onDestroy() {  

        super.onDestroy();  

        mc.cancel();  

    }  

}