Android实现淘宝客户端倒计时界面

/*  * Copyright (c) 2014, 青岛司通科技有限公司 All rights reserved.  * File Name：RushBuyCountDownTimerView.java  * Version：V1.0  * Author：zhaokaiqiang  * Date：2014-9-26  */ package com.qust.widght;  import java.util.Timer; import java.util.TimerTask;  import android.annotation.SuppressLint; import android.content.Context; import android.os.Handler; import android.os.Message; import android.util.AttributeSet; import android.view.LayoutInflater; import android.view.View; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast;  import com.qust.rushbuycountdowntimerview.R;  @SuppressLint("HandlerLeak") public class RushBuyCountDownTimerView extends LinearLayout {    // 小时，十位   private TextView tv_hour_decade;   // 小时，个位   private TextView tv_hour_unit;   // 分钟，十位   private TextView tv_min_decade;   // 分钟，个位   private TextView tv_min_unit;   // 秒，十位   private TextView tv_sec_decade;   // 秒，个位   private TextView tv_sec_unit;    private Context context;    private int hour_decade;   private int hour_unit;   private int min_decade;   private int min_unit;   private int sec_decade;   private int sec_unit;   // 计时器   private Timer timer;    private Handler handler = new Handler() {      public void handleMessage(Message msg) {       countDown();     };   };    public RushBuyCountDownTimerView(Context context, AttributeSet attrs) {     super(context, attrs);      this.context = context;     LayoutInflater inflater = (LayoutInflater) context         .getSystemService(Context.LAYOUT_INFLATER_SERVICE);     View view = inflater.inflate(R.layout.view_countdowntimer, this);      tv_hour_decade = (TextView) view.findViewById(R.id.tv_hour_decade);     tv_hour_unit = (TextView) view.findViewById(R.id.tv_hour_unit);     tv_min_decade = (TextView) view.findViewById(R.id.tv_min_decade);     tv_min_unit = (TextView) view.findViewById(R.id.tv_min_unit);     tv_sec_decade = (TextView) view.findViewById(R.id.tv_sec_decade);     tv_sec_unit = (TextView) view.findViewById(R.id.tv_sec_unit);    }    /**    *    * @Description: 开始计时    * @param    * @return void    * @throws    */   public void start() {      if (timer == null) {       timer = new Timer();       timer.schedule(new TimerTask() {          @Override         public void run() {           handler.sendEmptyMessage(0);         }       }, 0, 1000);     }   }    /**    *    * @Description: 停止计时    * @param    * @return void    * @throws    */   public void stop() {     if (timer != null) {       timer.cancel();       timer = null;     }   }    /**    * @throws Exception    *    * @Description: 设置倒计时的时长    * @param    * @return void    * @throws    */   public void setTime(int hour, int min, int sec) {      if (hour >= 60 || min >= 60 || sec >= 60 || hour < 0 || min < 0         || sec < 0) {       throw new RuntimeException("Time format is error,please check out your code");     }      hour_decade = hour / 10;     hour_unit = hour - hour_decade * 10;      min_decade = min / 10;     min_unit = min - min_decade * 10;      sec_decade = sec / 10;     sec_unit = sec - sec_decade * 10;      tv_hour_decade.setText(hour_decade + "");     tv_hour_unit.setText(hour_unit + "");     tv_min_decade.setText(min_decade + "");     tv_min_unit.setText(min_unit + "");     tv_sec_decade.setText(sec_decade + "");     tv_sec_unit.setText(sec_unit + "");    }    /**    *    * @Description: 倒计时    * @param    * @return boolean    * @throws    */   private void countDown() {      if (isCarry4Unit(tv_sec_unit)) {       if (isCarry4Decade(tv_sec_decade)) {          if (isCarry4Unit(tv_min_unit)) {           if (isCarry4Decade(tv_min_decade)) {              if (isCarry4Unit(tv_hour_unit)) {               if (isCarry4Decade(tv_hour_decade)) {                 Toast.makeText(context, "时间到了",                     Toast.LENGTH_SHORT).show();                 stop();               }             }           }         }       }     }   }    /**    *    * @Description: 变化十位，并判断是否需要进位    * @param    * @return boolean    * @throws    */   private boolean isCarry4Decade(TextView tv) {      int time = Integer.valueOf(tv.getText().toString());     time = time - 1;     if (time < 0) {       time = 5;       tv.setText(time + "");       return true;     } else {       tv.setText(time + "");       return false;     }    }    /**    *    * @Description: 变化个位，并判断是否需要进位    * @param    * @return boolean    * @throws    */   private boolean isCarry4Unit(TextView tv) {      int time = Integer.valueOf(tv.getText().toString());     time = time - 1;     if (time < 0) {       time = 9;       tv.setText(time + "");       return true;     } else {       tv.setText(time + "");       return false;     }    } }