<?xml version="1.0" encoding="utf-8"?>  <LinearLayout  xmlns:android/93857.html">android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:background="@android:color/white">  <TextView   android:id="@+id/mytime"   android:layout_width="match_parent"   android:layout_height="match_parent"   android:gravity="center"   android:textColor="@android:color/black"   android:textSize="36sp"/>  </LinearLayout> 

import android.app.Activity;  import android.os.Bundle;  import android.os.Handler;  import android.os.Message;  import android.text.format.DateFormat;  import android.widget.TextView;  public class TestActivity extends Activity {    private static final int msgKey1 = 1;    private TextView mTime;    @Override    public void onCreate(Bundle savedInstanceState) {      super.onCreate(savedInstanceState);      setContentView(R.layout.time);      mTime = (TextView) findViewById(R.id.mytime);      new TimeThread().start();    }    public class TimeThread extends Thread {      @Override      public void run () {        do {          try {            Thread.sleep(1000);            Message msg = new Message();            msg.what = msgKey1;            mHandler.sendMessage(msg);          }          catch (InterruptedException e) {            e.printStackTrace();          }        } while(true);      }    }    private Handler mHandler = new Handler() {      @Override      public void handleMessage (Message msg) {        super.handleMessage(msg);        switch (msg.what) {          case msgKey1:            mTime.setText(getTime());            break;          default:            break;        }      }    };    //獲得當前年月日時分秒星期    public String getTime(){      final Calendar c = Calendar.getInstance();      c.setTimeZone(TimeZone.getTimeZone("GMT+8:00"));      String mYear = String.valueOf(c.get(Calendar.YEAR)); // 獲取當前年份      String mMonth = String.valueOf(c.get(Calendar.MONTH) + 1);// 獲取當前月份      String mDay = String.valueOf(c.get(Calendar.DAY_OF_MONTH));// 獲取當前月份的日期號碼      String mWay = String.valueOf(c.get(Calendar.DAY_OF_WEEK));      String mHour = String.valueOf(c.get(Calendar.HOUR_OF_DAY));//時      String mMinute = String.valueOf(c.get(Calendar.MINUTE));//分      String mSecond = String.valueOf(c.get(Calendar.SECOND));//秒      if("1".equals(mWay)){        mWay ="天";      }else if("2".equals(mWay)){        mWay ="一";      }else if("3".equals(mWay)){        mWay ="二";      }else if("4".equals(mWay)){        mWay ="三";      }else if("5".equals(mWay)){        mWay ="四";      }else if("6".equals(mWay)){        mWay ="五";      }else if("7".equals(mWay)){        mWay ="六";      }      return mYear + "年" + mMonth + "月" + mDay+"日"+" "+"星期"+mWay+" "+mHour+":"+mMinute+":"+mSecond;    }  }