AnalogClock与Handler的使用

main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" ><TextView android:id="@+id/clockText" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /><AnalogClockandroid:id="@+id/analogClock"android:layout_width="fill_parent"android:layout_height="wrap_content"></AnalogClock> </LinearLayout> 

ClockActivity.java

package com.itxinke.www;import java.util.Calendar;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.widget.TextView;public class ClockActivity extends Activity { /** Called when the activity is first created. */protected static final int GUINOTIFIER = 0x1234;private TextView clockText;private Handler handler;private Thread clockThread;private int mHours;private int mMinutes; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); clockText = (TextView)findViewById(R.id.clockText); handler = new Handler() {@Overridepublic void handleMessage(Message msg){// TODO Auto-generated method stubclockText.setText(mHours + ":" + mMinutes);super.handleMessage(msg);} }; clockThread = new ClockThread(); clockThread.start(); } private class ClockThread extends Thread {@Overridepublic void run(){// TODO Auto-generated method stubsuper.run();try{do{long time = System.currentTimeMillis();final Calendar mCalendar = Calendar.getInstance();mCalendar.setTimeInMillis(time);mHours = mCalendar.get(Calendar.HOUR);mMinutes = mCalendar.get(Calendar.MINUTE);Thread.sleep(1000);Message message = new Message();message.what = ClockActivity.GUINOTIFIER;ClockActivity.this.handler.sendMessage(message);}while(ClockActivity.ClockThread.interrupted() == false);}catch(Exception e){e.printStackTrace();}} }} 

效果图：