类似程序管理器、进程管理器里的软件信息、进程信息，设置一个TrafficInfo结构体来表示流量信息：
package com.example.mobilesafe.engine; import android.graphics.drawable.Drawable; /** * Created by sing on 14-1-26. * desc: */ public class TrafficInfo { private static final String TAG = "TrafficInfo"; //应用的包名 private String packname; //应用的名称 private String appname; //上传的数据 private long tx; //下载的数据 private long rx; //应用图标 private Drawable icon; public String getPackname() { return packname; } public void setPackname(String packname) { this.packname = packname; } public String getAppname() { return appname; } public void setAppname(String appname) { this.appname = appname; } public long getTx() { return tx; } public void setTx(long tx) { this.tx = tx; } public long getRx() { return rx; } public void setRx(long rx) { this.rx = rx; } public Drawable getIcon() { return icon; } public void setIcon(Drawable icon) { this.icon = icon; } }获取流量信息的TrafficInfoProvider：
package com.example.mobilesafe.engine; import android.content.Context; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.net.TrafficStats; import java.util.ArrayList; import java.util.List; /** * Created by sing on 14-1-26. * desc: */ public class TrafficInfoProvider { private static final String TAG = "TrafficInfoProvider"; private PackageManager pm; private Context context; public TrafficInfoProvider(Context context) { this.context = context; pm = context.getPackageManager(); } /** * 返回所有的有互联网访问权限的应用程序的流量信息。 * * @return */ public List<TrafficInfo> getTrafficInfos() { //获取到配置权限信息的应用程序 List<PackageInfo> packinfos = pm.getInstalledPackages(PackageManager.GET_PERMISSIONS); //存放具有Internet权限信息的应用 List<TrafficInfo> trafficInfos = new ArrayList<TrafficInfo>(); for (PackageInfo packinfo : packinfos) { //获取该应用的所有权限信息 String[] permissions = packinfo.requestedPermissions; if (permissions != null && permissions.length > 0) { for (String permission : permissions) { //筛选出具有Internet权限的应用程序 if ("android.permission.INTERNET".equals(permission)) { //用于封装具有Internet权限的应用程序信息 TrafficInfo trafficInfo = new TrafficInfo(); //封装应用信息 trafficInfo.setPackname(packinfo.packageName); trafficInfo.setIcon(packinfo.applicationInfo.loadIcon(pm)); trafficInfo.setAppname(packinfo.applicationInfo.loadLabel(pm).toString()); //获取到应用的uid（user id） int uid = packinfo.applicationInfo.uid; //TrafficStats对象通过应用的uid来获取应用的下载、上传流量信息 trafficInfo.setRx(TrafficStats.getUidRxBytes(uid)); trafficInfo.setTx(TrafficStats.getUidTxBytes(uid)); trafficInfos.add(trafficInfo); trafficInfo = null; break; } } } } return trafficInfos; } }原理是获取具有internet权限的程序。 TrafficInfoActivity代码：
package com.example.mobilesafe; import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.text.format.Formatter; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.TextView; import com.example.mobilesafe.engine.TrafficInfo; import com.example.mobilesafe.engine.TrafficInfoProvider; import java.util.List; /** * Created by sing on 14-1-26. * desc: */ public class TrafficInfoActivity extends Activity { //展示数据列表 private ListView lv; //获取到所有具有Intenet权限的应用的流量信息 private TrafficInfoProvider provider; //ProgressBar和TextView（正在加载...）的父控件，用于控制其显示 private View ll_loading; //封装单个具有Intenet权限的应用的流量信息 private List<TrafficInfo> trafficInfos; //处理子线程发送过来的消息，更新UI private Handler handler = new Handler(){ public void handleMessage(android.os.Message msg) { ll_loading.setVisibility(View.INVISIBLE); lv.setAdapter(new TrafficAdapter()); }; }; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.trafficinfo_layout); lv = (ListView) findViewById(R.id.lv_traffic); provider = new TrafficInfoProvider(this); ll_loading = findViewById(R.id.ll_loading); ll_loading.setVisibility(View.VISIBLE); //获取到具有Internet权限的应用所产生的流量 new Thread(){ public void run() { trafficInfos = provider.getTrafficInfos(); //想主线程中发送一个空消息，用于通知主线程更新数据 handler.sendEmptyMessage(0); }; }.start(); } //数据适配器 private class TrafficAdapter extends BaseAdapter { public int getCount() { return trafficInfos.size(); } public Object getItem(int position) { return trafficInfos.get(position); } public long getItemId(int position) { return position; } //ListView中显示多少个Item，该方法就被调用多少次 public View getView(int position, View convertView, ViewGroup parent) { View view; ViewHolder holder = new ViewHolder(); TrafficInfo info = trafficInfos.get(position); //复用缓存的View if(convertView==null){ view = View.inflate(getApplicationContext(), R.layout.traffic_item, null); holder.iv_icon = (ImageView) view.findViewById(R.id.iv_traffic_icon); holder.tv_name = (TextView) view.findViewById(R.id.tv_traffic_name); holder.tv_rx = (TextView) view.findViewById(R.id.tv_traffic_rx); holder.tv_tx = (TextView) view.findViewById(R.id.tv_traffic_tx); holder.tv_total = (TextView) view.findViewById(R.id.tv_traffic_total); view.setTag(holder); }else{ view = convertView; holder = (ViewHolder) view.getTag(); } holder.iv_icon.setImageDrawable(info.getIcon()); holder.tv_name.setText(info.getAppname()); //下载所产生的流量 long rx = info.getRx(); //上传所产生的流量 long tx = info.getTx(); //增强程序的健壮性。因为在模拟器上运行时返回值为-1. if(rx<0){ rx = 0; } if(tx<0){ tx = 0; } holder.tv_rx.setText(Formatter.formatFileSize(getApplicationContext(), rx)); holder.tv_tx.setText(Formatter.formatFileSize(getApplicationContext(), tx)); //总流量 long total = rx + tx; //通过Formatter将long类型的数据转换为MB或这KB，当数字较小时，自动采用KB holder.tv_total.setText(Formatter.formatFileSize(getApplicationContext(), total)); return view; } } //通过static的修饰，保证了栈内存中存在唯一一份字节码且被共用 static class ViewHolder{ ImageView iv_icon; TextView tv_name; TextView tv_tx; TextView tv_rx; TextView tv_total; } }运行效果图：
转载至：http://blog.csdn.net/asmcvc/article/details/18795317
