Android手机显示多彩霓虹灯效果

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package com.example.test;  
  
import java.util.Random; 
 
 
import android.app.Activity; 
import android.os.Bundle; 
import android.os.Handler; 
import android.os.Message; 
import android.view.Window; 
import android.widget.LinearLayout; 
import android.widget.TextView; 
  
public class MainActivity extends Activity{  
   private Handler handler;//Handler对象 
   private static LinearLayout linearLayout;//整体布局 
   public static TextView[] tv=new TextView[14];//TextView数组 
   int [] bgColor=new int[]{R.color.color1,R.color.color2,R.color.color3, 
       R.color.color4,R.color.color5,R.color.color6,R.color.color7};//使用颜色资源 
   private int index=0;//当前颜色值 
  @Override  
  public void onCreate(Bundle savedInstanceState) {  
    super.onCreate(savedInstanceState);  
    requestWindowFeature(Window.FEATURE_NO_TITLE);//设置全屏显示 
    setContentView(R.layout.main); 
    
    //获取线性布局管理器 
    linearLayout=(LinearLayout)findViewById(R.id.linearLayout1); 
    //获取屏幕的高度 
    int height=this.getResources().getDisplayMetrics().heightPixels; 
    for (int i = 0; i