Android限时抢购倒计时实现代码

<linearlayout
    android:id="@+id/ll_xsqg"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:paddingtop="8dp"
    android:paddingbottom="8dp"
    android:paddingleft="16dp">

    <textview
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:textstyle="bold"
      android:textsize="14sp"
      android:text="@string/xsqg"/>

    <textview
      android:id="@+id/tv_hour"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_marginleft="5dp"
      android:paddingtop="3dp"
      android:paddingbottom="3dp"
      android:paddingleft="5dp"
      android:paddingright="5dp"
      android:background="@drawable/time_corner"
      android:textcolor="@android:color/white"
      android:textsize="12sp"
      android:text="02"/>
    <textview
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_marginleft="5dp"
      android:textstyle="bold"
      android:textcolor="@android:color/black"
      android:text=":"/>
    <textview
      android:id="@+id/tv_minute"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_marginleft="5dp"
      android:paddingtop="3dp"
      android:paddingbottom="3dp"
      android:paddingleft="5dp"
      android:paddingright="5dp"
      android:background="@drawable/time_corner"
      android:textcolor="@android:color/white"
      android:textsize="12sp"
      android:text="15"/>
    <textview
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_marginleft="5dp"
      android:textstyle="bold"
      android:textcolor="@android:color/black"
      android:text=":"/>
    <textview
      android:id="@+id/tv_second"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_marginleft="5dp"
      android:paddingtop="3dp"
      android:paddingbottom="3dp"
      android:paddingleft="5dp"
      android:paddingright="5dp"
      android:background="@drawable/time_corner"
      android:textcolor="@android:color/white"
      android:textsize="12sp"
      android:text="36"/>

  </linearlayout>

public class homeactivity extends activity {

  @bind(r.id.tv_hour)
  textview tvhour;
  @bind(r.id.tv_minute)
  textview tvminute;
  @bind(r.id.tv_second)
  textview tvsecond;

  private long mhour = 02;
  private long mmin = 15;
  private long msecond = 36;
  private boolean isrun = true;

  private handler timehandler = new handler() {
    @override
    public void handlemessage(message msg) {
      super.handlemessage(msg);
      if (msg.what==1) {
        computetime();
        if (mhour<10){
          tvhour.settext("0"+mhour+"");
        }else {
          tvhour.settext("0"+mhour+"");
        }
        if (mmin<10){
          tvminute.settext("0"+mmin+"");
        }else {
          tvminute.settext(mmin+"");
        }
        if (msecond<10){
          tvsecond.settext("0"+msecond+"");
        }else {
          tvsecond.settext(msecond+"");
        }
      }
    }
  };

  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    requestwindowfeature(window.feature_no_title);
    setcontentview(r.layout.activity_home);
    butterknife.bind(this);
    startrun();
  }


  /**
   * 开启倒计时
   */
  private void startrun() {
    new thread(new runnable() {

      @override
      public void run() {
        // todo auto-generated method stub
        while (isrun) {
          try {
            thread.sleep(1000); // sleep 1000ms
            message message = message.obtain();
            message.what = 1;
            timehandler.sendmessage(message);
          } catch (exception e) {
            e.printstacktrace();
          }
        }
      }
    }).start();
  }

  /**
   * 倒计时计算
   */
  private void computetime() {
    msecond--;
    if (msecond < 0) {
      mmin--;
      msecond = 59;
      if (mmin < 0) {
        mmin = 59;
        mhour--;
      }
    }
  }
}