1 <?xml version="1.0" encoding="utf-8"?> 2 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 3     android:layout_width="match_parent" 4     android:layout_height="match_parent" 5     > 6     <TextView 7         android:id = "@+id/vieww01" 8         android:layout_width= "wrap_content" 9         android:layout_height= "wrap_content"10         android:layout_gravity = "center"11         android:width="200pt"12         android:height="200pt"13         android:background="#f00" />14     <TextView15         android:id="@+id/vieww02"16         android:layout_width= "wrap_content"17         android:layout_height= "wrap_content"18         android:layout_gravity = "center"19         android:width = "160pt"20         android:height = "160pt"21         android:background="#0f0"/>22     <TextView23         android:id = "@+id/vieww03"24         android:layout_width = "wrap_content"25         android:layout_height = "wrap_content"26         android:layout_gravity = "center"27         android:width="110pt"28         android:height="110pt"29         android:background="#00f" />30     <TextView31         android:id = "@+id/vieww04"32         android:layout_width="wrap_content"33         android:layout_height="wrap_content"34         android:layout_gravity = "center"35         android:width="80pt"36         android:height="80pt"37         android:background="#ff0"38         />39     <TextView40         android:id = "@+id/vieww05"41         android:layout_width="wrap_content"42         android:layout_height="wrap_content"43         android:layout_gravity = "center"44         android:width="50pt"45         android:height="50pt"46         android:background="#f0f"47         />48     <TextView49         android:id = "@+id/vieww06"50         android:layout_width="wrap_content"51         android:layout_height="wrap_content"52         android:layout_gravity = "center"53         android:width="20pt"54         android:height="20pt"55         android:background="#0ff"56         />57 58 </FrameLayout>

 1 package com.example.think.myapplication; 2  3         import android.os.Handler; 4         import android.os.Message; 5         import android.os.Bundle; 6         import android.widget.TextView; 7         import android.app.Activity; 8         import java.util.Timer; 9         import java.util.TimerTask;10 11 public class MainActivity extends Activity {12 13     private int currentColor = 0;14 //  定义一个颜色数组15     final int[] colors = new int[]{16             R.color.color1,17             R.color.color2,18             R.color.color3,19             R.color.color4,20             R.color.color5,21             R.color.color622     };23 24     final int[] names = new int[]{25             R.id.vieww01,26             R.id.vieww02,27             R.id.vieww03,28             R.id.vieww04,29             R.id.vieww05,30             R.id.vieww0631     };32     TextView [] views = new TextView[names.length];33     Handler handler = new Handler(){34         @Override35         public void handleMessage(Message msg){36             //表明消息来自本程序所发送的37             if (msg.what == 0x123){38                 for (int i = 0;i < names.length; i++){39                     views[i].setBackgroundResource(colors[(i+currentColor) % names.length]);40                 }41                 currentColor++;42             }43             super.handleMessage(msg);44         }45     };46     @Override47     protected void onCreate(Bundle savedInstanceState) {48         super.onCreate(savedInstanceState);49         setContentView(R.layout.activity_main);50         for (int i = 0; i < names.length ; i++){51             views[i] = (TextView) findViewById(names[i]);52         }53         //定义一个线程周期性地改变currentColor变量值54         new Timer().schedule(new TimerTask() {55             @Override56             public void run() {57                 //发送一条空消息通知系统改变6个TextView组件的背景色58                 handler.sendEmptyMessage(0x123);59             }60         },0,200);61     }62 }

 1 <?xml version="1.0" encoding="utf-8"?> 2 <resources> 3     <color name="colorPrimary">#3F51B5</color> 4     <color name="colorPrimaryDark">#303F9F</color> 5     <color name="colorAccent">#FF4081</color> 6     <color name="color1">#f00</color> 7     <color name="color2">#0f0</color> 8     <color name="color3">#00f</color> 9     <color name="color4">#ff0</color>10     <color name="color5">#f0f</color>11     <color name="color6">#0ff</color>12 </resources>