FrameLayout和handle实现霓虹灯效果

MainActivity.java

package com.kale.framelayout;

import java.util.Timer;
import java.util.TimerTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.ActionBarActivity;
import android.widget.TextView;

public class MainActivity extends ActionBarActivity {

	private int currentColor = 0;
	final int[] colors = new int[] {
			R.color.color01,
			R.color.color02,
			R.color.color03,
			R.color.color04,
			R.color.color05,
			R.color.color06
	};
	final int[] names = new int[] {
			R.id.textView01_id,
			R.id.textView02_id,
			R.id.textView03_id,
			R.id.textView04_id,
			R.id.textView05_id,
			R.id.textView06_id,
	};
	TextView[] views = new TextView[names.length];
	Handler handler = new Handler(){
		@Override
		public void handleMessage(Message msg) {
			//表明消息来自本程序
			System.out.println(msg.what);
			if(msg.what == 0x123) {
				for(int i = 0 ;i<names.length;i++) {
					views[i].setBackgroundResource(colors[(i+currentColor)%names.length]);
				}
				currentColor++;
			}
			super.handleMessage(msg);
		}
	};
	
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		for (int i = 0; i < names.length; i++) {
			views[i] = (TextView)findViewById(names[i]);
					
		}
		//定义一个线程周期性的改变currentColor变量的值
		new Timer().schedule(new TimerTask() {
			@Override
			public void run() {
				//发送一条空消息来通知系统改变颜色
				handler.sendEmptyMessage(0x123);
				System.out.println("发送了条消息");
			}
		}, 0,1000);
		
	}


}

xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_height="match_parent"
    android:layout_width="match_parent"
    >

    <!-- 先定义的TextView在下面，后定义的在上面 -->
    <TextView
        android:id="@+id/textView01_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:width="320dp"
        android:height="320dp"
        android:layout_gravity="center"
        android:background="#f00"/>

    <TextView
        android:id="@+id/textView02_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:width="280dp"
        android:height="280dp"
        android:layout_gravity="center"
        android:background="#0f0"/>
    
    <TextView
        android:id="@+id/textView03_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:width="240dp"
        android:height="240dp"
        android:layout_gravity="center"
        android:background="#00f"/>
    
    <TextView
        android:id="@+id/textView04_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:width="200dp"
        android:height="200dp"
        android:layout_gravity="center"
        android:background="#ff0"/>   
        
    
	<TextView
	    android:id="@+id/textView05_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:width="160dp"
        android:height="160dp"
        android:layout_gravity="center"
        android:background="#f0f"/>
	
	<TextView
	    android:id="@+id/textView06_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:width="120dp"
        android:height="120dp"
        android:layout_gravity="center"
        android:background="#0ff"/>
	
</FrameLayout>

values中的color.xml

<resources>
    <color name="color01">#f00</color>
    <color name="color02">#0f0</color>
    <color name="color03">#00f</color>
    <color name="color04">#ff0</color>
    <color name="color05">#f0f</color>
    <color name="color06">#0ff</color>
   
</resources>