Android之——流量管理程序演示样例

转载请注明出处:http://blog.csdn.net/l1028386804/article/details/47680811

眼下。市面上有非常多管理手机流量的软件，能够让用户实时获取到自己手机中当前消耗了多少流量，手机中每一个应用程序消耗了多少手机流量，那么这些功能Android中是怎样实现的呢，这篇文章就是要向大家介绍一下，Android系统中流量管理的功能。

那么。就让我们一起来实现这些有用的功能吧。

一、原理

依照惯例，我们还是先来谈谈原理级别的东西。

Android系统中封装了一套流量数据API，这些API能够非常好的管理Android系统流量使用情况。我们能够基于这些Android API来实现管理手机流量的功能。这些API非常好的封装在了android.net包下的TrafficStats中，基本的方法有

//2g/3g接收的流量
TrafficStats.getMobileRxBytes();
//2g/3g接收的包信息
TrafficStats.getMobileRxPackets();
//2g/3g上传的流量
TrafficStats.getMobileTxBytes();
//2g/3g上传的包信息
TrafficStats.getMobileTxPackets();
//手机总共接收的流量
TrafficStats.getTotalRxBytes();
//手机总共上传的流量
TrafficStats.getTotalTxBytes();
//得到某个应用程程序接收的流量
TrafficStats.getUidRxBytes(uid);
//得到某个应用程程序接收的流量
TrafficStats.getUidTxBytes(uid);

我们就基于这些方法实现一个Android手机流量管理的程序演示样例。

二、实现

1、创建实体类TrafficInfo

为了更好的提现java面向对象的思想，我将获取的手机应用程序的信息封装成一个javabean。这个javabean实体类封装了应用程序的图标。包名，名称。用户id等信息。

详细实现代码例如以下:

package cn.lyz.mobilesafe.domain;

import android.graphics.drawable.Drawable;

/**
 * 流量信息
 * @author liuyazhuang
 *
 */
public class TrafficInfo {
	//应用图标
	private Drawable icon;
	//app名称
	private String appname;
	//包名
	private String packname;
	//uid
	private int uid;
	
	
	public TrafficInfo() {
		super();
		// TODO Auto-generated constructor stub
	}
	
	public TrafficInfo(Drawable icon, String appname, String packname, int uid) {
		super();
		this.icon = icon;
		this.appname = appname;
		this.packname = packname;
		this.uid = uid;
	}

	public Drawable getIcon() {
		return icon;
	}
	public void setIcon(Drawable icon) {
		this.icon = icon;
	}
	public String getAppname() {
		return appname;
	}
	public void setAppname(String appname) {
		this.appname = appname;
	}
	public String getPackname() {
		return packname;
	}
	public void setPackname(String packname) {
		this.packname = packname;
	}
	public int getUid() {
		return uid;
	}
	public void setUid(int uid) {
		this.uid = uid;
	}
	
	@Override
	public String toString() {
		return "TrafficInfo [icon=" + icon + ", appname=" + appname
				+ ", packname=" + packname + ", uid=" + uid + "]";
	}
}

2、获取手机安装的应用程序的工具类TrafficManagerService

这个封装了主要封装了两个方法，一个是查询可以启动的应用程序方法getLauncherTrafficInfos，一个是获取拥有internet权限的应用列表的方法getInternetTrafficInfos，两个方法的返回值都是一个应用程序列表集合List<TrafficInfo>。

详细实现代码例如以下：

package cn.lyz.mobilesafe.engine;

import java.util.ArrayList;
import java.util.List;

import android.Manifest;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.graphics.drawable.Drawable;
import cn.lyz.mobilesafe.domain.TrafficInfo;

/**
 * 获取手机安装的应用程序的的引擎工具类
 * @author liuyazhuang
 *
 */
public class TrafficManagerService {
	
	private PackageManager pm;
	public TrafficManagerService(Context context) {
		super();
		pm = context.getPackageManager();
	}

	/**
	 * 查询可以启动的应用程序
	 * @return
	 */
	public List<TrafficInfo> getLauncherTrafficInfos(){
		List<TrafficInfo> trafficInfos = new ArrayList<TrafficInfo>();
		//查询可以启动的应用程序  
		Intent intent = new Intent();
		intent.setAction(Intent.ACTION_MAIN);
		intent.addCategory(Intent.CATEGORY_LAUNCHER);
		
		//ResolveInfo  就相似于一个IntentFilter
		List<ResolveInfo> resolveInfos = pm.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
		for(ResolveInfo info:resolveInfos){
			ApplicationInfo appInfo = info.activityInfo.applicationInfo;
			Drawable appicon = appInfo.loadIcon(pm);
			String appname = appInfo.loadLabel(pm).toString();
			
			String packageName = appInfo.packageName;
			int uid = appInfo.uid;
			
			trafficInfos.add(new TrafficInfo(appicon, appname, packageName, uid));
		}
		return trafficInfos;
	}
	
	/**
	 * 获取拥有internet权限的应用列表
	 * @return
	 */
	public List<TrafficInfo> getInternetTrafficInfos(){
		List<TrafficInfo> trafficInfos = new ArrayList<TrafficInfo>();
		//获取手机中安装的而且具有权限的应用
		List<PackageInfo> installedPackages = pm.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES | PackageManager.GET_PERMISSIONS);
		for(PackageInfo info : installedPackages){
			//获取权限数组
			String[] permissions = info.requestedPermissions;
			if(permissions != null && permissions.length > 0){
				for(String permission : permissions){
					if(permission.equals(Manifest.permission.INTERNET)){
						ApplicationInfo applicationInfo = info.applicationInfo;
						Drawable icon = applicationInfo.loadIcon(pm);
						String appname = applicationInfo.loadLabel(pm).toString();
						String packagename = applicationInfo.packageName;
						int uid = applicationInfo.uid;
						TrafficInfo trafficInfo = new TrafficInfo(icon, appname, packagename, uid);
						trafficInfos.add(trafficInfo);
					}
				}
			}
		}
		return trafficInfos;
	}
}

3、创建文本格式化工具类TextFormat

当我们在Android系统中获取到流量信息时，有些流量的单位是byte，有些流量的单位是kb，为了统一显示这些流量信息单位。我在这里写了一个格式化流量单位的工具类。

详细实现代码例如以下：

package cn.lyz.mobilesafe.utils;

import java.text.DecimalFormat;

/**
 * 文本格式化工具类
 * @author liuyazhuang
 *
 */
public class TextFormat {
	
	/**
	 * 格式化数据
	 * @param data
	 * @return
	 */
	public static String formatByte(long data){
		DecimalFormat format = new DecimalFormat("##.##");
		if(data < 1024){
			return data+"bytes";
		}else if(data < 1024 * 1024){
			return format.format(data/1024f) +"KB";
		}else if(data < 1024 * 1024 * 1024){
			return format.format(data/1024f/1024f) +"MB";
		}else if(data < 1024 * 1024 * 1024 * 1024){
			return format.format(data/1024f/1024f/1024f) +"GB";
		}else{
			return "超出统计范围";
		}
	}
}

4、程序入口TrafficManagerActivity

1)类成员字段

protected static final int SUCCESS_GET_TRAFFICINFO = 0;
protected static final int REFRESH_TRAFFIC = 1;
private TextView tv_traffic_manager_mobile;
private TextView tv_traffic_manager_wifi;
private ListView lv_traffic_manager_content;
private TrafficManagerService managerService;
private List<TrafficInfo> trafficInfos;
private List<TrafficInfo> realTrafficInfos;
private TrafficManagerAdapter mAdapter;

2)获取手机2g/3g总流量

/**
 * 获取手机2g/3g总流量
 * @return
 */
private long getMobileTotal(){
	long mobile_rx = TrafficStats.getMobileRxBytes();
	long mobile_tx = TrafficStats.getMobileTxBytes();
	return (mobile_rx + mobile_tx) < 0 ? 0 : (mobile_rx + mobile_tx);
}

3)获取手机总流量

/**
 * 获取手机总流量
 * @return
 */
private long total(){
	return TrafficStats.getTotalRxBytes() + TrafficStats.getTotalTxBytes();
}

4)获取WIFI总流量

/**
 * 获取WIFI总流量
 * @return
 */
private long getWifiTotal(){
	return total() - getMobileTotal();
}

5)自己定义适配器TrafficManagerAdapter

这是个内部类，继承自BaseAdapter，主要实现了将获取到的数据显示到界面上的操作。我们这里用到了ListView的ViewHolder缓存技术。

详细实现代码例如以下:

static class ViewHolder{
	ImageView iv_appicon;
	TextView tv_appname;
	TextView tv_apptx;
	TextView tv_apprx;
	TextView tv_apptarffic;
}
private class TrafficManagerAdapter extends BaseAdapter{
	private LayoutInflater mLayoutInflater;
	public TrafficManagerAdapter(Context context){
		mLayoutInflater = LayoutInflater.from(context);
	}
	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return realTrafficInfos.size();
	}

	@Override
	public Object getItem(int position) {
		// TODO Auto-generated method stub
		return realTrafficInfos.get(position);
	}

	@Override
	public long getItemId(int position) {
		// TODO Auto-generated method stub
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		View view = null;
		ViewHolder holder = null;
		if(convertView != null){
			view = convertView;
			holder = (ViewHolder) view.getTag();
		}else{
			view = mLayoutInflater.inflate(R.layout.traffic_manager_item, null);
			holder = new ViewHolder();
			holder.iv_appicon = (ImageView) view.findViewById(R.id.iv_appicon);
			holder.tv_appname = (TextView) view.findViewById(R.id.tv_appname);
			holder.tv_apptx = (TextView) view.findViewById(R.id.tv_apptx);
			holder.tv_apprx = (TextView) view.findViewById(R.id.tv_apprx);
			holder.tv_apptarffic = (TextView) view.findViewById(R.id.tv_apptarffic);
			view.setTag(holder);
		}
		TrafficInfo info = realTrafficInfos.get(position);
		holder.iv_appicon.setImageDrawable(info.getIcon());
		String name = info.getAppname();
		if(name.length() > 8){
			name = name.substring(0, 7)+"...";
		}
		holder.tv_appname.setText(name);
		int uid = info.getUid();
		long tx = TrafficStats.getUidTxBytes(uid);
		if(tx < 0){
			tx = 0;
		}
		long rx = TrafficStats.getUidRxBytes(uid);
		if(rx < 0){
			rx = 0;
		}
		long total = tx + rx;
		holder.tv_apptarffic.setText(TextFormat.formatByte(total));
		holder.tv_apptx.setText("上传:"+TextFormat.formatByte(tx));
		holder.tv_apprx.setText("下载:"+TextFormat.formatByte(rx));
		
		return view;
	}
	
}

6)Handler实现

我们通过一个Hanlder来实现主线程与子线程的交互操作，将子线程处理的结果数据。通过Handler与Message机制传递到主线程。

详细实现代码例如以下:

private Handler mHandler = new Handler(){
	public void handleMessage(android.os.Message msg) {
		switch (msg.what) {
		case SUCCESS_GET_TRAFFICINFO:
			mAdapter = new TrafficManagerAdapter(TrafficManagerActivity.this);
			lv_traffic_manager_content.setAdapter(mAdapter);
			timer = new Timer();
			timer.schedule(timerTask, 0,2000);
			break;
		case REFRESH_TRAFFIC:
			if(mAdapter != null){
				mAdapter.notifyDataSetChanged();
			}
			break;
		default:
			break;
		}
	};
};

7)实现定时操作

在这个演示样例程序中，我们须要一个定时器来实时获取手机流量数据，来实现动态实时效果的呈现。所以，我在这里用到了Timer和TimerTask两个工具类，来实现2秒钟向主线程发送一次message消息，由Handler来运行刷新界面显示的效果。

详细实现代码例如以下：

private Timer timer;
private TimerTask timerTask = new TimerTask() {
	@Override
	public void run() {
		Message msg = new Message();
		msg.what = REFRESH_TRAFFIC;
		mHandler.sendMessage(msg);
	}
};

8)onCreate方法

这种方法主要实现的功能是初始化页面控件。设置控件事件。在子线程中实现获取手机流量信息等操作。

@Override
protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.traffic_manager);
	
	tv_traffic_manager_mobile = (TextView) findViewById(R.id.tv_traffic_manager_mobile);
	tv_traffic_manager_wifi = (TextView) findViewById(R.id.tv_traffic_manager_wifi);
	lv_traffic_manager_content = (ListView) findViewById(R.id.lv_traffic_manager_content);
	
	tv_traffic_manager_mobile.setText(TextFormat.formatByte(getMobileTotal()));
	tv_traffic_manager_wifi.setText(TextFormat.formatByte(getWifiTotal()));
	managerService = new TrafficManagerService(this);
	new Thread(new Runnable() {
		
		@Override
		public void run() {
			//trafficInfos = managerService.getLauncherTrafficInfos();
			realTrafficInfos = managerService.getInternetTrafficInfos();
//				realTrafficInfos = new ArrayList<TrafficInfo>();
//				for(TrafficInfo info : trafficInfos){
//					if(TrafficStats.getUidRxBytes(info.getUid()) == -1 && TrafficStats.getUidTxBytes(info.getUid())== -1){
//						
//					}else{
//						realTrafficInfos.add(info);
//					}
//				}
			Message msg = new Message();
			msg.what = SUCCESS_GET_TRAFFICINFO;
			msg.obj = trafficInfos;
			mHandler.sendMessage(msg);
		}
	}).start();

9)onDestroy方法

我们主要在这个回调方法中实现资源释放的操作。

详细实现代码例如以下：

@Override
protected void onDestroy() {
	// TODO Auto-generated method stub
	super.onDestroy();
	if(timer != null){
		timer.cancel();
		timer = null;
	}
	if(timerTask != null){
		timerTask.cancel();
		timerTask = null;
	}
}

10)完整源码

package com.lyz.traffic.state.activity;

import java.util.List;
import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.content.Context;
import android.net.TrafficStats;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import cn.lyz.mobilesafe.domain.TrafficInfo;
import cn.lyz.mobilesafe.engine.TrafficManagerService;
import cn.lyz.mobilesafe.utils.TextFormat;

/**
 * 流量管理
 * @author liuyazhuang
 *
 */
public class TrafficManagerActivity extends Activity {
	protected static final int SUCCESS_GET_TRAFFICINFO = 0;
	protected static final int REFRESH_TRAFFIC = 1;
	private TextView tv_traffic_manager_mobile;
	private TextView tv_traffic_manager_wifi;
	private ListView lv_traffic_manager_content;
	private TrafficManagerService managerService;
	private List<TrafficInfo> trafficInfos;
	private List<TrafficInfo> realTrafficInfos;
	private TrafficManagerAdapter mAdapter;
	
	private Timer timer;
	private TimerTask timerTask = new TimerTask() {
		@Override
		public void run() {
			Message msg = new Message();
			msg.what = REFRESH_TRAFFIC;
			mHandler.sendMessage(msg);
		}
	};
	
	private Handler mHandler = new Handler(){
		public void handleMessage(android.os.Message msg) {
			switch (msg.what) {
			case SUCCESS_GET_TRAFFICINFO:
				mAdapter = new TrafficManagerAdapter(TrafficManagerActivity.this);
				lv_traffic_manager_content.setAdapter(mAdapter);
				timer = new Timer();
				timer.schedule(timerTask, 0,2000);
				break;
			case REFRESH_TRAFFIC:
				if(mAdapter != null){
					mAdapter.notifyDataSetChanged();
				}
				break;
			default:
				break;
			}
		};
	};
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.traffic_manager);
		
		tv_traffic_manager_mobile = (TextView) findViewById(R.id.tv_traffic_manager_mobile);
		tv_traffic_manager_wifi = (TextView) findViewById(R.id.tv_traffic_manager_wifi);
		lv_traffic_manager_content = (ListView) findViewById(R.id.lv_traffic_manager_content);
		
		tv_traffic_manager_mobile.setText(TextFormat.formatByte(getMobileTotal()));
		tv_traffic_manager_wifi.setText(TextFormat.formatByte(getWifiTotal()));
		managerService = new TrafficManagerService(this);
		new Thread(new Runnable() {
			
			@Override
			public void run() {
				//trafficInfos = managerService.getLauncherTrafficInfos();
				realTrafficInfos = managerService.getInternetTrafficInfos();
//				realTrafficInfos = new ArrayList<TrafficInfo>();
//				for(TrafficInfo info : trafficInfos){
//					if(TrafficStats.getUidRxBytes(info.getUid()) == -1 && TrafficStats.getUidTxBytes(info.getUid())== -1){
//						
//					}else{
//						realTrafficInfos.add(info);
//					}
//				}
				Message msg = new Message();
				msg.what = SUCCESS_GET_TRAFFICINFO;
				msg.obj = trafficInfos;
				mHandler.sendMessage(msg);
			}
		}).start();
		
//		//2g/3g接收的流量
//		TrafficStats.getMobileRxBytes();
//		//2g/3g接收的包信息
//		TrafficStats.getMobileRxPackets();
//		//2g/3g上传的流量
//		TrafficStats.getMobileTxBytes();
//		//2g/3g上传的包信息
//		TrafficStats.getMobileTxPackets();
//		//手机总共接收的流量
//		TrafficStats.getTotalRxBytes();
//		//手机总共上传的流量
//		TrafficStats.getTotalTxBytes();
//		//得到某个应用程程序接收的流量
//		TrafficStats.getUidRxBytes(uid);
//		//得到某个应用程程序接收的流量
//		TrafficStats.getUidTxBytes(uid);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}
	
	/**
	 * 获取手机2g/3g总流量
	 * @return
	 */
	private long getMobileTotal(){
		long mobile_rx = TrafficStats.getMobileRxBytes();
		long mobile_tx = TrafficStats.getMobileTxBytes();
		return mobile_rx + mobile_tx;
	}
	
	/**
	 * 获取手机总流量
	 * @return
	 */
	private long total(){
		return TrafficStats.getTotalRxBytes() + TrafficStats.getTotalTxBytes();
	}
	
	/**
	 * 获取WIFI总流量
	 * @return
	 */
	private long getWifiTotal(){
		return total() - getMobileTotal();
	}
	
	static class ViewHolder{
		ImageView iv_appicon;
		TextView tv_appname;
		TextView tv_apptx;
		TextView tv_apprx;
		TextView tv_apptarffic;
	}
	private class TrafficManagerAdapter extends BaseAdapter{
		private LayoutInflater mLayoutInflater;
		public TrafficManagerAdapter(Context context){
			mLayoutInflater = LayoutInflater.from(context);
		}
		@Override
		public int getCount() {
			// TODO Auto-generated method stub
			return realTrafficInfos.size();
		}

		@Override
		public Object getItem(int position) {
			// TODO Auto-generated method stub
			return realTrafficInfos.get(position);
		}

		@Override
		public long getItemId(int position) {
			// TODO Auto-generated method stub
			return position;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			View view = null;
			ViewHolder holder = null;
			if(convertView != null){
				view = convertView;
				holder = (ViewHolder) view.getTag();
			}else{
				view = mLayoutInflater.inflate(R.layout.traffic_manager_item, null);
				holder = new ViewHolder();
				holder.iv_appicon = (ImageView) view.findViewById(R.id.iv_appicon);
				holder.tv_appname = (TextView) view.findViewById(R.id.tv_appname);
				holder.tv_apptx = (TextView) view.findViewById(R.id.tv_apptx);
				holder.tv_apprx = (TextView) view.findViewById(R.id.tv_apprx);
				holder.tv_apptarffic = (TextView) view.findViewById(R.id.tv_apptarffic);
				view.setTag(holder);
			}
			TrafficInfo info = realTrafficInfos.get(position);
			holder.iv_appicon.setImageDrawable(info.getIcon());
			String name = info.getAppname();
			if(name.length() > 8){
				name = name.substring(0, 7)+"...";
			}
			holder.tv_appname.setText(name);
			int uid = info.getUid();
			long tx = TrafficStats.getUidTxBytes(uid);
			if(tx < 0){
				tx = 0;
			}
			long rx = TrafficStats.getUidRxBytes(uid);
			if(rx < 0){
				rx = 0;
			}
			long total = tx + rx;
			holder.tv_apptarffic.setText(TextFormat.formatByte(total));
			holder.tv_apptx.setText("上传:"+TextFormat.formatByte(tx));
			holder.tv_apprx.setText("下载:"+TextFormat.formatByte(rx));
			
			return view;
		}
		
	}
	
	@Override
	protected void onDestroy() {
		// TODO Auto-generated method stub
		super.onDestroy();
		if(timer != null){
			timer.cancel();
			timer = null;
		}
		if(timerTask != null){
			timerTask.cancel();
			timerTask = null;
		}
	}
}

5、布局文件

这里一个是主布局文件traffic_manager.xml和ListView的条目布局文件traffic_manager_item.xml

分别实现例如以下:

1)traffic_manager.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TableLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >

        <TableRow
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" >

            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:gravity="center"
                android:text="2g/3g" />

            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:gravity="center"
                android:text="wifi" />
        </TableRow>

        <TableRow
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/tv_traffic_manager_mobile"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:gravity="center"
                android:text="200Mb" />

            <TextView
                android:id="@+id/tv_traffic_manager_wifi"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:gravity="center"
                android:text="50MB" />
        </TableRow>
    </TableLayout>

    <SlidingDrawer
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:content="@+id/lv_traffic_manager_content"
        android:handle="@+id/handle"
        android:orientation="vertical" >

        <ImageView
            android:id="@id/handle"
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:src="@drawable/notification" />

        <ListView
            android:id="@id/lv_traffic_manager_content"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent" >
        </ListView>
    </SlidingDrawer>

</LinearLayout>

2)traffic_manager_item.xml

<?
xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <ImageView
        android:id="@+id/iv_appicon"
        android:layout_width="35dip"
        android:layout_height="35dip"
        android:scaleType="fitXY"
        android:src="@drawable/ic_launcher" />

    <TextView
        android:id="@+id/tv_appname"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@id/iv_appicon"
        android:text="我最摇摆"
        android:textColor="@android:color/white"
        android:textSize="20sp" />

    <TextView
        android:id="@+id/tv_apptarffic"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:text="20MB"
        android:textColor="@android:color/white"
        android:textSize="20sp" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/tv_appname"
        android:layout_toRightOf="@id/iv_appicon"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/tv_apptx"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginRight="80dp"
            android:text="上传：20MB"
            android:textSize="14sp" />

        <TextView
            android:id="@+id/tv_apprx"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="下载:20MB"
            android:textSize="14sp" />
    </LinearLayout>

</RelativeLayout>

三、执行效果

四、温馨提示

大家能够到链接http://download.csdn.net/detail/l1028386804/9008451下载完整的Android流量管理程序演示样例源码

本实例中，为了方面。我把一些文字直接写在了布局文件里和相关的类中，大家在真实的项目中要把这些文字写在string.xml文件里，在外部引用这些资源。切记。这是作为一个Android程序猿最主要的开发常识和规范，我在这里仅仅是为了方便直接写在了类和布局文件里。