初学Android,FrameLayout霓虹灯效果(五)

package cn.sunmeng.FrameLayoutTest;import java.util.Timer;import java.util.TimerTask;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.widget.TextView;public class FrameLayoutTestActivity extends Activity {       private int currentColor = 0;       //定义一个颜色数组       final int[] colors = new int[]       {              R.color.color7,              R.color.color6,              R.color.color5,              R.color.color4,              R.color.color3,              R.color.color2,              R.color.color1,       };       final int[] names = new int[]       {              R.id.View01,              R.id.View02,              R.id.View03,              R.id.View04,              R.id.View05,              R.id.View06,              R.id.View07       };       TextView[] views = new TextView[7];    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        for (int i = 0 ; i < 7 ; i++)              {                     views[i] = (TextView)findViewById(names[i]);              }              final Handler handler = new Handler()              {                     @Override                     public void handleMessage(Message msg)                     {                            //表明消息来自本程序所发送                            if(msg.what == 0x1122)                            {                                   //依次改变7个TextView的背景色                                   for(int i = 0 ; i < 7 - currentColor ; i++)                                     {                                          views[i].setBackgroundResource(colors[i + currentColor]);                                   }                                   for(int i = 7 - currentColor , j = 0 ; i < 7 ; i++ ,j++)                                   {                                          views[i].setBackgroundResource(colors[j]);                                   }                            }                            super.handleMessage(msg);                     }              };              //定义一个线程周期性的改变currentColor变量值              new Timer().schedule(new TimerTask()              {                     @Override                     public void run()                     {                            currentColor++;                            if(currentColor >= 6)                            {                                   currentColor = 0;                            }                            //发送一条消息通知系统改变7个TextView组件的背景色                            Message m = new Message();                            //给该消息定义一个标识                            m.what = 0x1122;                            handler.sendMessage(m);                       }                          }, 0 , 100);       }}

Color.xml配置文件

<?xml version="1.0" encoding="utf-8"?>    #330000    #550000    #770000    #990000    #bb0000    #dd0000    #ff0000

Main.xml配置文件

<?xml version="1.0" encoding="utf-8"?>

FrameLayout这个组件允许组件间的叠放，上面７个TextView叠放在一起就做成类似霓虹灯的效果

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