Retrieve apps with recent location access
Instead of recent location request Bug: 120239674 Test: unit test and manual test Change-Id: I12a083074f4b4cc3acf10831d29da25953c567a6
This commit is contained in:
Lifu Tang
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/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settingslib.location;
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import android.app.AppOpsManager;
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import android.content.Context;
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import android.content.pm.ApplicationInfo;
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import android.content.pm.PackageManager;
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import android.content.pm.PackageManager.NameNotFoundException;
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import android.graphics.drawable.Drawable;
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import android.os.Process;
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import android.os.UserHandle;
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import android.os.UserManager;
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import android.text.format.DateUtils;
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import android.util.IconDrawableFactory;
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import android.util.Log;
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import androidx.annotation.VisibleForTesting;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.List;
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/**
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* Retrieves the information of applications which accessed location recently.
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*/
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public class RecentLocationAccesses {
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private static final String TAG = RecentLocationAccesses.class.getSimpleName();
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@VisibleForTesting
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static final String ANDROID_SYSTEM_PACKAGE_NAME = "android";
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// Keep last 24 hours of location app information.
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private static final long RECENT_TIME_INTERVAL_MILLIS = DateUtils.DAY_IN_MILLIS;
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@VisibleForTesting
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static final int[] LOCATION_OPS = new int[]{
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AppOpsManager.OP_FINE_LOCATION,
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AppOpsManager.OP_COARSE_LOCATION,
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};
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private final PackageManager mPackageManager;
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private final Context mContext;
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private final IconDrawableFactory mDrawableFactory;
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public RecentLocationAccesses(Context context) {
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mContext = context;
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mPackageManager = context.getPackageManager();
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mDrawableFactory = IconDrawableFactory.newInstance(context);
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}
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/**
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* Fills a list of applications which queried location recently within specified time.
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* Apps are sorted by recency. Apps with more recent location accesses are in the front.
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*/
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public List<Access> getAppList() {
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// Retrieve a location usage list from AppOps
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AppOpsManager aoManager =
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(AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE);
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List<AppOpsManager.PackageOps> appOps = aoManager.getPackagesForOps(LOCATION_OPS);
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final int appOpsCount = appOps != null ? appOps.size() : 0;
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// Process the AppOps list and generate a preference list.
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ArrayList<Access> accesses = new ArrayList<>(appOpsCount);
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final long now = System.currentTimeMillis();
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final UserManager um = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
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final List<UserHandle> profiles = um.getUserProfiles();
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for (int i = 0; i < appOpsCount; ++i) {
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AppOpsManager.PackageOps ops = appOps.get(i);
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// Don't show the Android System in the list - it's not actionable for the user.
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// Also don't show apps belonging to background users except managed users.
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String packageName = ops.getPackageName();
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int uid = ops.getUid();
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int userId = UserHandle.getUserId(uid);
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boolean isAndroidOs =
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(uid == Process.SYSTEM_UID) && ANDROID_SYSTEM_PACKAGE_NAME.equals(packageName);
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if (isAndroidOs || !profiles.contains(new UserHandle(userId))) {
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continue;
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}
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Access access = getAccessFromOps(now, ops);
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if (access != null) {
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accesses.add(access);
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}
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}
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return accesses;
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}
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public List<Access> getAppListSorted() {
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List<Access> accesses = getAppList();
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// Sort the list of Access by recency. Most recent accesses first.
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Collections.sort(accesses, Collections.reverseOrder(new Comparator<Access>() {
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@Override
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public int compare(Access access1, Access access2) {
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return Long.compare(access1.accessFinishTime, access2.accessFinishTime);
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}
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}));
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return accesses;
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}
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/**
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* Creates a Access entry for the given PackageOps.
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*
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* This method examines the time interval of the PackageOps first. If the PackageOps is older
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* than the designated interval, this method ignores the PackageOps object and returns null.
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* When the PackageOps is fresh enough, this method returns a Access object for the package
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*/
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private Access getAccessFromOps(long now,
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AppOpsManager.PackageOps ops) {
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String packageName = ops.getPackageName();
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List<AppOpsManager.OpEntry> entries = ops.getOps();
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long locationAccessFinishTime = 0L;
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// Earliest time for a location access to end and still be shown in list.
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long recentLocationCutoffTime = now - RECENT_TIME_INTERVAL_MILLIS;
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for (AppOpsManager.OpEntry entry : entries) {
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locationAccessFinishTime = Math.max(entry.getLastAccessBackgroundTime(),
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entry.getLastAccessForegroundTime());
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}
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// Bail out if the entry is out of date.
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if (locationAccessFinishTime < recentLocationCutoffTime) {
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return null;
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}
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// The package is fresh enough, continue.
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int uid = ops.getUid();
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int userId = UserHandle.getUserId(uid);
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Access access = null;
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try {
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ApplicationInfo appInfo = mPackageManager.getApplicationInfoAsUser(
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packageName, PackageManager.GET_META_DATA, userId);
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if (appInfo == null) {
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Log.w(TAG, "Null application info retrieved for package " + packageName
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+ ", userId " + userId);
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return null;
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}
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final UserHandle userHandle = new UserHandle(userId);
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Drawable icon = mDrawableFactory.getBadgedIcon(appInfo, userId);
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CharSequence appLabel = mPackageManager.getApplicationLabel(appInfo);
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CharSequence badgedAppLabel = mPackageManager.getUserBadgedLabel(appLabel, userHandle);
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if (appLabel.toString().contentEquals(badgedAppLabel)) {
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// If badged label is not different from original then no need for it as
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// a separate content description.
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badgedAppLabel = null;
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}
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access = new Access(packageName, userHandle, icon, appLabel, badgedAppLabel,
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locationAccessFinishTime);
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} catch (NameNotFoundException e) {
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Log.w(TAG, "package name not found for " + packageName + ", userId " + userId);
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}
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return access;
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}
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public static class Access {
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public final String packageName;
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public final UserHandle userHandle;
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public final Drawable icon;
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public final CharSequence label;
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public final CharSequence contentDescription;
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public final long accessFinishTime;
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private Access(String packageName, UserHandle userHandle, Drawable icon,
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CharSequence label, CharSequence contentDescription,
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long accessFinishTime) {
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this.packageName = packageName;
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this.userHandle = userHandle;
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this.icon = icon;
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this.label = label;
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this.contentDescription = contentDescription;
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this.accessFinishTime = accessFinishTime;
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}
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}
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}
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