85 lines
3.2 KiB
Java
85 lines
3.2 KiB
Java
package com.aoleyun.sn.utils;
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import android.content.Context;
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import android.content.pm.PackageInfo;
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import android.content.pm.PackageManager;
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import android.net.TrafficStats;
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import android.text.TextUtils;
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import android.util.Log;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileReader;
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import java.util.List;
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public class GetFlowUtil {
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public static FlowInfo getAppFlowInfo(String pakageName, Context context) {
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//获取到配置权限信息的应用程序
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PackageManager pms = context.getPackageManager();
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List<PackageInfo> packinfos = pms
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.getInstalledPackages(PackageManager.GET_PERMISSIONS);
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//存放具有Internet权限信息的应用
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FlowInfo flowInfo = new FlowInfo();
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for (PackageInfo packinfo : packinfos) {
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String appName = packinfo.packageName;
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if (!TextUtils.isEmpty(appName)) {
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if (appName.equals(pakageName)) {
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//用于封装具有Internet权限的应用程序信息
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//封装应用信息
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flowInfo.setPackname(packinfo.packageName);
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flowInfo.setIcon(packinfo.applicationInfo.loadIcon(pms));
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flowInfo.setAppname(packinfo.applicationInfo.loadLabel(pms).toString());
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//获取到应用的uid（user id）
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int uid = packinfo.applicationInfo.uid;
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//TrafficStats对象通过应用的uid来获取应用的下载、上传流量信息
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//发送的 上传的流量byte
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flowInfo.setUpKb(TrafficStats.getUidRxBytes(uid));
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//下载的流量 byte
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flowInfo.setDownKb(TrafficStats.getUidTxBytes(uid));
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break;
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}
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}
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}
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return flowInfo;
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}
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private static long[] getStat(int uid) {
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String line, line2;
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long[] stats = new long[2];
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try {
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File fileSnd = new File("/proc/uid_stat/" + uid + "/tcp_snd");
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File fileRcv = new File("/proc/uid_stat/" + uid + "/tcp_rcv");
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BufferedReader br1 = new BufferedReader(new FileReader(fileSnd));
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BufferedReader br2 = new BufferedReader(new FileReader(fileRcv));
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while ((line = br1.readLine()) != null && (line2 = br2.readLine()) != null) {
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stats[0] = Long.parseLong(line);
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stats[1] = Long.parseLong(line2);
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}
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br1.close();
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br2.close();
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} catch (Exception e) {
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e.printStackTrace();
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Log.e("getStat: ", e.getMessage());
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}
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return stats;
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}
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//将字节数转化为MB
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public static String byteToMB(long size) {
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long kb = 1024;
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long mb = kb * 1024;
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long gb = mb * 1024;
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if (size >= gb) {
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return String.format("%.1f GB", (float) size / gb);
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} else if (size >= mb) {
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float f = (float) size / mb;
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return String.format(f > 100 ? "%.0f MB" : "%.1f MB", f);
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} else if (size > kb) {
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float f = (float) size / kb;
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return String.format(f > 100 ? "%.0f KB" : "%.1f KB", f);
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} else {
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return String.format("%d B", size);
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}
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}
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}
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