转载请注明出处:http://blog.csdn.net/l1028386804/article/details/47680811
目前,市面上有很多管理手机流量的软件,可以让用户实时获取到自己手机中当前消耗了多少流量,手机中每个应用程序消耗了多少手机流量,那么这些功能Android中是如何实现的呢,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实用的功能吧。
按照惯例,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可以很好的管理Android系统流量使用情况。我们可以基于这些Android API来实现管理手机流量的功能。这些API很好的封装在了android.net包下的TrafficStats中,主要的方法有
//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示例。
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,
具体实现代码如下:
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 + "]"; } }
这个封装了主要封装了两个方法,一个是查询能够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>。
具体实现代码如下:
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(); } /** * 查询能够启动的应用程序 * @return */ public List<TrafficInfo> getLauncherTrafficInfos(){ List<TrafficInfo> trafficInfos = new ArrayList<TrafficInfo>(); //查询能够启动的应用程序 Intent intent = new Intent(); intent.setAction(Intent.ACTION_MAIN); intent.addCategory(Intent.CATEGORY_LAUNCHER); //ResolveInfo 就类似于一个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>(); //获取手机中安装的并且具有权限的应用 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; } }
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。
具体实现代码如下:
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"; } } }
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;
/** * 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); }
/** * 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(); }
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。
具体实现代码如下:
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; } }
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。
具体实现代码如下:
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; } }; };
在这个示例程序中,我们需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来执行刷新界面显示的效果。
具体实现代码如下:
private Timer timer; private TimerTask timerTask = new TimerTask() { @Override public void run() { Message msg = new Message(); msg.what = REFRESH_TRAFFIC; mHandler.sendMessage(msg); } };
这个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();
我们主要在这个回调方法中实现资源释放的操作。
具体实现代码如下:
@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; } }
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; } } }
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
分别实现如下:
<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>
<?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>
大家可以到链接http://download.csdn.net/detail/l1028386804/9008451下载完整的Android流量管理程序示例源代码
本实例中,为了方面,我把一些文字直接写在了布局文件中和相关的类中,大家在真实的项目中要把这些文字写在string.xml文件中,在外部引用这些资源,切记,这是作为一个Android程序员最基本的开发常识和规范,我在这里只是为了方便直接写在了类和布局文件中。
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原文地址:http://blog.csdn.net/l1028386804/article/details/47680811