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

    #330000
    #550000
    #770000
    #990000
    #bb0000
    #dd0000
    #ff0000

Main.xml配置文件

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