Java 类android.app.usage.NetworkStatsManager 实例源码

private Map<String, Long> getMobileData(Context context, TelephonyManager tm, NetworkStatsManager nsm, int offset) {
    Map<String, Long> result = new HashMap<>();
    if (ActivityCompat.checkSelfPermission(context, Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_GRANTED) {
        long[] range = AppUtil.getTimeRange(SortEnum.getSortEnum(offset));
        NetworkStats networkStatsM;
        try {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                networkStatsM = nsm.querySummary(ConnectivityManager.TYPE_MOBILE, tm.getSubscriberId(), range[0], range[1]);
                if (networkStatsM != null) {
                    while (networkStatsM.hasNextBucket()) {
                        NetworkStats.Bucket bucket = new NetworkStats.Bucket();
                        networkStatsM.getNextBucket(bucket);
                        String key = "u" + bucket.getUid();
                        if (result.containsKey(key)) {
                            result.put(key, result.get(key) + bucket.getTxBytes() + bucket.getRxBytes());
                        } else {
                            result.put(key, bucket.getTxBytes() + bucket.getRxBytes());
                        }
                    }
                }
            }
        } catch (RemoteException e) {
            e.printStackTrace();
        }
    }
    return result;
}

@TargetApi(23)
public static NetworkStatsManager getNetworkStatsManager() {
    return (NetworkStatsManager) getSystemService(Context.NETWORK_STATS_SERVICE);
}

/**
 * @since 4.0.0
 */
public static NetworkStatsManager networkStats(Context context) {
    return (NetworkStatsManager) context.getSystemService(NETWORK_STATS_SERVICE);
}

@Override
public View onCreateView(final LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    super.onCreateView(inflater, container, savedInstanceState);
    View view = inflater.inflate(R.layout.network_usage_stats, container, false);

    getActivity().getActionBar().setTitle(R.string.data_usage);

    mPackageManager = getActivity().getPackageManager();
    mNetstatsManager = (NetworkStatsManager)getActivity().getSystemService(
            Context.NETWORK_STATS_SERVICE);

    mListData = new ArrayList<>();
    mListAdapter = new ArrayAdapter<List<NetworkStats.Bucket>>(getActivity(),
            R.layout.data_usage_item, android.R.id.title, mListData) {
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View appView = convertView;
            if (convertView == null) {
                appView = inflater.inflate(R.layout.data_usage_item, parent, false);
                final TextView title = (TextView) appView.findViewById(android.R.id.title);
                final TextView summary = (TextView) appView.findViewById(android.R.id.summary);
                final TextView state = (TextView) appView.findViewById(R.id.state);
                ImageView imageView = (ImageView) appView.findViewById(android.R.id.icon);
                appView.setTag(new ViewHolder(title, summary, state, imageView));
            }
            List<NetworkStats.Bucket> item = getItem(position);
            bindView(appView, item);
            return appView;
        }
    };
    mQuerySpinner = (Spinner) view.findViewById(R.id.query_type_spinner);
    mQuerySpinner.setOnItemSelectedListener(this);
    mExplanation = (TextView) view.findViewById(R.id.explanation);
    mStartDate = getTodayPlus(0, 0);
    mEndDate = getTodayPlus(Calendar.DAY_OF_MONTH, 1);
    mStartDateButton = (Button) view.findViewById(R.id.start_date_button);
    if (mStartDateButton != null) {
        mStartDateButton.setOnClickListener(this);
    }
    mEndDateButton = (Button) view.findViewById(R.id.end_date_button);
    if (mEndDateButton != null) {
        mEndDateButton.setOnClickListener(this);
    }
    updateButtonsText();
    mDataUsageSummary = (TextView) view.findViewById(R.id.data_usage_summary);
    mDataUsageList = (ListView) view.findViewById(android.R.id.list);
    mDataUsageList.setAdapter(mListAdapter);
    mAppHistoryList = (ListView) view.findViewById(R.id.app_history);
    mBackToAppsListButton = (Button) view.findViewById(R.id.back_to_apps_button);
    if (mBackToAppsListButton != null) {
        mBackToAppsListButton.setOnClickListener(this);
    }
    return view;
}

@TargetApi(AndroidHelper.API_23)
public static NetworkStatsManager networkStatsManager() {
    return (NetworkStatsManager) get(Context.NETWORK_STATS_SERVICE);
}

/**
 * Obtain a {@link NetworkStatsManager} instance associated with specified {@link Context}
 *
 * @param context Context
 * @return {@link NetworkStatsManager} associated with specified {@link Context}
 * @throws InvalidContextException if {@link NetworkStatsManager} can't be obtained
 *                                 from specified {@link Context}
 */
@NonNull
@RequiresApi(Build.VERSION_CODES.M)
public static NetworkStatsManager getNetworkStatsManager(@NonNull Context context) {
    return validate(context.getSystemService(Context.NETWORK_STATS_SERVICE));
}