TrafficStats Api android and calculation of daily data usage

Question

Have a confusion over following two methods of TrafficStats of Android: getUidTxBytes(int uid) and getUidRxBytes(int uid) , These two methods return the num

Answer 1

Here, I getting those apps, which has permission of Internet, You can change the Permission name and get apps as per you needed.

ArrayList listApps;

 public void getAllAppList() {

    listApps = new ArrayList();

    PackageManager p = getPackageManager();
    List packages = p.getInstalledApplications(PackageManager.GET_META_DATA);

    for (ApplicationInfo applicationInfo : packages) {

        try {

            PackageInfo packageInfo = p.getPackageInfo(applicationInfo.packageName, PackageManager.GET_PERMISSIONS);

            String[] permissions = packageInfo.requestedPermissions;

            for (String permissionName : permissions) {

                if (permissionName.equals("android.permission.INTERNET")) {

                    ApplicationInfo appInfo = packageInfo.applicationInfo;

                    AppObject appObject = new AppObject();

                    appObject.appDrawable = getPackageManager().getApplicationIcon(appInfo);
                    appObject.appName = (String) getPackageManager().getApplicationLabel(appInfo);
                    appObject.dataUsage = getDataUsage(appInfo);

                    listApps.add(appObject);

                }

            }
        } catch (NullPointerException e) {
            e.printStackTrace();
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
    }

    Debug.e("APP_SIZE", ":" + listApps.size());

    appsAdapter.addAll(listApps);

}

public String getDataUsage(ApplicationInfo appInfo) {

    int uid = appInfo.uid;

    double received = (double) TrafficStats.getUidRxBytes(uid) / (1024 * 1024);
    double sent = (double) TrafficStats.getUidTxBytes(uid) / (1024 * 1024);

    double total = received + sent;

    return String.format("%.2f", total) + " MB";

}