/** * Copyright (C) 2007 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy * of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ package com.android.settings; import static android.content.Intent.EXTRA_USER; import static android.content.Intent.EXTRA_USER_ID; import static android.text.format.DateUtils.FORMAT_ABBREV_MONTH; import static android.text.format.DateUtils.FORMAT_SHOW_DATE; import android.annotation.Nullable; import android.app.ActivityManager; import android.app.AppGlobals; import android.app.Fragment; import android.app.IActivityManager; import android.app.KeyguardManager; import android.app.admin.DevicePolicyManager; import android.content.ActivityNotFoundException; import android.content.ComponentName; import android.content.ContentResolver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.pm.ApplicationInfo; import android.content.pm.IPackageManager; import android.content.pm.IntentFilterVerificationInfo; import android.content.pm.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; import android.content.pm.ResolveInfo; import android.content.pm.UserInfo; import android.content.res.Resources; import android.content.res.TypedArray; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.graphics.drawable.VectorDrawable; import android.hardware.fingerprint.FingerprintManager; import android.net.ConnectivityManager; import android.net.LinkProperties; import android.net.Network; import android.net.wifi.WifiManager; import android.os.BatteryManager; import android.os.Bundle; import android.os.IBinder; import android.os.INetworkManagementService; import android.os.RemoteException; import android.os.ServiceManager; import android.os.UserHandle; import android.os.UserManager; import android.os.storage.StorageManager; import android.os.storage.VolumeInfo; import android.preference.PreferenceFrameLayout; import android.provider.ContactsContract.CommonDataKinds; import android.provider.ContactsContract.Contacts; import android.provider.ContactsContract.Data; import android.provider.ContactsContract.Profile; import android.provider.ContactsContract.RawContacts; import android.provider.Settings; import android.support.annotation.StringRes; import android.support.v7.preference.Preference; import android.support.v7.preference.PreferenceGroup; import android.telephony.TelephonyManager; import android.text.Spannable; import android.text.SpannableString; import android.text.TextUtils; import android.text.format.DateUtils; import android.text.style.TtsSpan; import android.util.ArraySet; import android.util.IconDrawableFactory; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.EditText; import android.widget.ListView; import android.widget.TabWidget; import com.android.internal.app.UnlaunchableAppActivity; import com.android.internal.util.ArrayUtils; import com.android.internal.widget.LockPatternUtils; import com.android.settings.password.ChooseLockSettingsHelper; import java.net.InetAddress; import java.util.Iterator; import java.util.List; import java.util.Locale; public final class Utils extends com.android.settingslib.Utils { private static final String TAG = "Settings"; /** * Set the preference's title to the matching activity's label. */ public static final int UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY = 1; /** * Color spectrum to use to indicate badness. 0 is completely transparent (no data), * 1 is most bad (red), the last value is least bad (green). */ public static final int[] BADNESS_COLORS = new int[] { 0x00000000, 0xffc43828, 0xffe54918, 0xfff47b00, 0xfffabf2c, 0xff679e37, 0xff0a7f42 }; private static final String SETTINGS_PACKAGE_NAME = "com.android.settings"; public static final String OS_PKG = "os"; /** * Finds a matching activity for a preference's intent. If a matching * activity is not found, it will remove the preference. * * @param context The context. * @param parentPreferenceGroup The preference group that contains the * preference whose intent is being resolved. * @param preferenceKey The key of the preference whose intent is being * resolved. * @param flags 0 or one or more of * {@link #UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY} * . * @return Whether an activity was found. If false, the preference was * removed. */ public static boolean updatePreferenceToSpecificActivityOrRemove(Context context, PreferenceGroup parentPreferenceGroup, String preferenceKey, int flags) { Preference preference = parentPreferenceGroup.findPreference(preferenceKey); if (preference == null) { return false; } Intent intent = preference.getIntent(); if (intent != null) { // Find the activity that is in the system image PackageManager pm = context.getPackageManager(); List<ResolveInfo> list = pm.queryIntentActivities(intent, 0); int listSize = list.size(); for (int i = 0; i < listSize; i++) { ResolveInfo resolveInfo = list.get(i); if ((resolveInfo.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) { // Replace the intent with this specific activity preference.setIntent(new Intent().setClassName( resolveInfo.activityInfo.packageName, resolveInfo.activityInfo.name)); if ((flags & UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY) != 0) { // Set the preference title to the activity's label preference.setTitle(resolveInfo.loadLabel(pm)); } return true; } } } // Did not find a matching activity, so remove the preference parentPreferenceGroup.removePreference(preference); return false; } /** * Returns the UserManager for a given context * * @throws IllegalStateException if no UserManager could be retrieved. */ public static UserManager getUserManager(Context context) { UserManager um = UserManager.get(context); if (um == null) { throw new IllegalStateException("Unable to load UserManager"); } return um; } /** * Returns true if Monkey is running. */ public static boolean isMonkeyRunning() { return ActivityManager.isUserAMonkey(); } /** * Returns whether the device is voice-capable (meaning, it is also a phone). */ public static boolean isVoiceCapable(Context context) { TelephonyManager telephony = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); return telephony != null && telephony.isVoiceCapable(); } /** * Returns the WIFI IP Addresses, if any, taking into account IPv4 and IPv6 style addresses. * @param context the application context * @return the formatted and newline-separated IP addresses, or null if none. */ public static String getWifiIpAddresses(Context context) { WifiManager wifiManager = context.getSystemService(WifiManager.class); Network currentNetwork = wifiManager.getCurrentNetwork(); if (currentNetwork != null) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); LinkProperties prop = cm.getLinkProperties(currentNetwork); return formatIpAddresses(prop); } return null; } private static String formatIpAddresses(LinkProperties prop) { if (prop == null) return null; Iterator<InetAddress> iter = prop.getAllAddresses().iterator(); // If there are no entries, return null if (!iter.hasNext()) return null; // Concatenate all available addresses, comma separated String addresses = ""; while (iter.hasNext()) { addresses += iter.next().getHostAddress(); if (iter.hasNext()) addresses += "\n"; } return addresses; } public static Locale createLocaleFromString(String localeStr) { // TODO: is there a better way to actually construct a locale that will match? // The main problem is, on top of Java specs, locale.toString() and // new Locale(locale.toString()).toString() do not return equal() strings in // many cases, because the constructor takes the only string as the language // code. So : new Locale("en", "US").toString() => "en_US" // And : new Locale("en_US").toString() => "en_us" if (null == localeStr) return Locale.getDefault(); String[] brokenDownLocale = localeStr.split("_", 3); // split may not return a 0-length array. if (1 == brokenDownLocale.length) { return new Locale(brokenDownLocale[0]); } else if (2 == brokenDownLocale.length) { return new Locale(brokenDownLocale[0], brokenDownLocale[1]); } else { return new Locale(brokenDownLocale[0], brokenDownLocale[1], brokenDownLocale[2]); } } public static boolean isBatteryPresent(Intent batteryChangedIntent) { return batteryChangedIntent.getBooleanExtra(BatteryManager.EXTRA_PRESENT, true); } public static String getBatteryPercentage(Intent batteryChangedIntent) { return formatPercentage(getBatteryLevel(batteryChangedIntent)); } /** * Prepare a custom preferences layout, moving padding to {@link ListView} * when outside scrollbars are requested. Usually used to display * {@link ListView} and {@link TabWidget} with correct padding. */ public static void prepareCustomPreferencesList( ViewGroup parent, View child, View list, boolean ignoreSidePadding) { final boolean movePadding = list.getScrollBarStyle() == View.SCROLLBARS_OUTSIDE_OVERLAY; if (movePadding) { final Resources res = list.getResources(); final int paddingSide = res.getDimensionPixelSize(R.dimen.settings_side_margin); final int paddingBottom = res.getDimensionPixelSize( com.android.internal.R.dimen.preference_fragment_padding_bottom); if (parent instanceof PreferenceFrameLayout) { ((PreferenceFrameLayout.LayoutParams) child.getLayoutParams()).removeBorders = true; final int effectivePaddingSide = ignoreSidePadding ? 0 : paddingSide; list.setPaddingRelative(effectivePaddingSide, 0, effectivePaddingSide, paddingBottom); } else { list.setPaddingRelative(paddingSide, 0, paddingSide, paddingBottom); } } } public static void forceCustomPadding(View view, boolean additive) { final Resources res = view.getResources(); final int paddingSide = res.getDimensionPixelSize(R.dimen.settings_side_margin); final int paddingStart = paddingSide + (additive ? view.getPaddingStart() : 0); final int paddingEnd = paddingSide + (additive ? view.getPaddingEnd() : 0); final int paddingBottom = res.getDimensionPixelSize( com.android.internal.R.dimen.preference_fragment_padding_bottom); view.setPaddingRelative(paddingStart, 0, paddingEnd, paddingBottom); } public static String getMeProfileName(Context context, boolean full) { if (full) { return getProfileDisplayName(context); } else { return getShorterNameIfPossible(context); } } private static String getShorterNameIfPossible(Context context) { final String given = getLocalProfileGivenName(context); return !TextUtils.isEmpty(given) ? given : getProfileDisplayName(context); } private static String getLocalProfileGivenName(Context context) { final ContentResolver cr = context.getContentResolver(); // Find the raw contact ID for the local ME profile raw contact. final long localRowProfileId; final Cursor localRawProfile = cr.query( Profile.CONTENT_RAW_CONTACTS_URI, new String[] {RawContacts._ID}, RawContacts.ACCOUNT_TYPE + " IS NULL AND " + RawContacts.ACCOUNT_NAME + " IS NULL", null, null); if (localRawProfile == null) return null; try { if (!localRawProfile.moveToFirst()) { return null; } localRowProfileId = localRawProfile.getLong(0); } finally { localRawProfile.close(); } // Find the structured name for the raw contact. final Cursor structuredName = cr.query( Profile.CONTENT_URI.buildUpon().appendPath(Contacts.Data.CONTENT_DIRECTORY).build(), new String[] {CommonDataKinds.StructuredName.GIVEN_NAME, CommonDataKinds.StructuredName.FAMILY_NAME}, Data.RAW_CONTACT_ID + "=" + localRowProfileId, null, null); if (structuredName == null) return null; try { if (!structuredName.moveToFirst()) { return null; } String partialName = structuredName.getString(0); if (TextUtils.isEmpty(partialName)) { partialName = structuredName.getString(1); } return partialName; } finally { structuredName.close(); } } private static final String getProfileDisplayName(Context context) { final ContentResolver cr = context.getContentResolver(); final Cursor profile = cr.query(Profile.CONTENT_URI, new String[] {Profile.DISPLAY_NAME}, null, null, null); if (profile == null) return null; try { if (!profile.moveToFirst()) { return null; } return profile.getString(0); } finally { profile.close(); } } public static boolean hasMultipleUsers(Context context) { return ((UserManager) context.getSystemService(Context.USER_SERVICE)) .getUsers().size() > 1; } /** * Returns the managed profile of the current user or {@code null} if none is found or a profile * exists but it is disabled. */ public static UserHandle getManagedProfile(UserManager userManager) { List<UserHandle> userProfiles = userManager.getUserProfiles(); final int count = userProfiles.size(); for (int i = 0; i < count; i++) { final UserHandle profile = userProfiles.get(i); if (profile.getIdentifier() == userManager.getUserHandle()) { continue; } final UserInfo userInfo = userManager.getUserInfo(profile.getIdentifier()); if (userInfo.isManagedProfile()) { return profile; } } return null; } /** * Returns the managed profile of the current user or {@code null} if none is found. Unlike * {@link #getManagedProfile} this method returns enabled and disabled managed profiles. */ public static UserHandle getManagedProfileWithDisabled(UserManager userManager) { // TODO: Call getManagedProfileId from here once Robolectric supports // API level 24 and UserManager.getProfileIdsWithDisabled can be Mocked (to avoid having // yet another implementation that loops over user profiles in this method). In the meantime // we need to use UserManager.getProfiles that is available on API 23 (the one currently // used for Settings Robolectric tests). final int myUserId = UserHandle.myUserId(); List<UserInfo> profiles = userManager.getProfiles(myUserId); final int count = profiles.size(); for (int i = 0; i < count; i++) { final UserInfo profile = profiles.get(i); if (profile.isManagedProfile() && profile.getUserHandle().getIdentifier() != myUserId) { return profile.getUserHandle(); } } return null; } /** * Retrieves the id for the given user's managed profile. * * @return the managed profile id or UserHandle.USER_NULL if there is none. */ public static int getManagedProfileId(UserManager um, int parentUserId) { int[] profileIds = um.getProfileIdsWithDisabled(parentUserId); for (int profileId : profileIds) { if (profileId != parentUserId) { return profileId; } } return UserHandle.USER_NULL; } /** * Returns the target user for a Settings activity. * <p> * User would be retrieved in this order: * <ul> * <li> If this activity is launched from other user, return that user id. * <li> If this is launched from the Settings app in same user, return the user contained as an * extra in the arguments or intent extras. * <li> Otherwise, return UserHandle.myUserId(). * </ul> * <p> * Note: This is secure in the sense that it only returns a target user different to the current * one if the app launching this activity is the Settings app itself, running in the same user * or in one that is in the same profile group, or if the user id is provided by the system. */ public static UserHandle getSecureTargetUser(IBinder activityToken, UserManager um, @Nullable Bundle arguments, @Nullable Bundle intentExtras) { UserHandle currentUser = new UserHandle(UserHandle.myUserId()); IActivityManager am = ActivityManager.getService(); try { String launchedFromPackage = am.getLaunchedFromPackage(activityToken); boolean launchedFromSettingsApp = SETTINGS_PACKAGE_NAME.equals(launchedFromPackage); UserHandle launchedFromUser = new UserHandle(UserHandle.getUserId( am.getLaunchedFromUid(activityToken))); if (launchedFromUser != null && !launchedFromUser.equals(currentUser)) { // Check it's secure if (isProfileOf(um, launchedFromUser)) { return launchedFromUser; } } UserHandle extrasUser = getUserHandleFromBundle(intentExtras); if (extrasUser != null && !extrasUser.equals(currentUser)) { // Check it's secure if (launchedFromSettingsApp && isProfileOf(um, extrasUser)) { return extrasUser; } } UserHandle argumentsUser = getUserHandleFromBundle(arguments); if (argumentsUser != null && !argumentsUser.equals(currentUser)) { // Check it's secure if (launchedFromSettingsApp && isProfileOf(um, argumentsUser)) { return argumentsUser; } } } catch (RemoteException e) { // Should not happen Log.v(TAG, "Could not talk to activity manager.", e); } return currentUser; } /** * Lookup both {@link Intent#EXTRA_USER} and {@link Intent#EXTRA_USER_ID} in the bundle * and return the {@link UserHandle} object. Return {@code null} if nothing is found. */ private static @Nullable UserHandle getUserHandleFromBundle(Bundle bundle) { if (bundle == null) { return null; } final UserHandle user = bundle.getParcelable(EXTRA_USER); if (user != null) { return user; } final int userId = bundle.getInt(EXTRA_USER_ID, -1); if (userId != -1) { return UserHandle.of(userId); } return null; } /** * Returns true if the user provided is in the same profiles group as the current user. */ private static boolean isProfileOf(UserManager um, UserHandle otherUser) { if (um == null || otherUser == null) return false; return (UserHandle.myUserId() == otherUser.getIdentifier()) || um.getUserProfiles().contains(otherUser); } /** * Return whether or not the user should have a SIM Cards option in Settings. * TODO: Change back to returning true if count is greater than one after testing. * TODO: See bug 16533525. */ public static boolean showSimCardTile(Context context) { final TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); return tm.getSimCount() > 1; } /** * Queries for the UserInfo of a user. Returns null if the user doesn't exist (was removed). * @param userManager Instance of UserManager * @param checkUser The user to check the existence of. * @return UserInfo of the user or null for non-existent user. */ public static UserInfo getExistingUser(UserManager userManager, UserHandle checkUser) { final List<UserInfo> users = userManager.getUsers(true /* excludeDying */); final int checkUserId = checkUser.getIdentifier(); for (UserInfo user : users) { if (user.id == checkUserId) { return user; } } return null; } public static View inflateCategoryHeader(LayoutInflater inflater, ViewGroup parent) { final TypedArray a = inflater.getContext().obtainStyledAttributes(null, com.android.internal.R.styleable.Preference, com.android.internal.R.attr.preferenceCategoryStyle, 0); final int resId = a.getResourceId(com.android.internal.R.styleable.Preference_layout, 0); a.recycle(); return inflater.inflate(resId, parent, false); } public static ArraySet<String> getHandledDomains(PackageManager pm, String packageName) { List<IntentFilterVerificationInfo> iviList = pm.getIntentFilterVerifications(packageName); List<IntentFilter> filters = pm.getAllIntentFilters(packageName); ArraySet<String> result = new ArraySet<>(); if (iviList != null && iviList.size() > 0) { for (IntentFilterVerificationInfo ivi : iviList) { for (String host : ivi.getDomains()) { result.add(host); } } } if (filters != null && filters.size() > 0) { for (IntentFilter filter : filters) { if (filter.hasCategory(Intent.CATEGORY_BROWSABLE) && (filter.hasDataScheme(IntentFilter.SCHEME_HTTP) || filter.hasDataScheme(IntentFilter.SCHEME_HTTPS))) { result.addAll(filter.getHostsList()); } } } return result; } /** * Returns the application info of the currently installed MDM package. */ public static ApplicationInfo getAdminApplicationInfo(Context context, int profileId) { DevicePolicyManager dpm = (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE); ComponentName mdmPackage = dpm.getProfileOwnerAsUser(profileId); if (mdmPackage == null) { return null; } String mdmPackageName = mdmPackage.getPackageName(); try { IPackageManager ipm = AppGlobals.getPackageManager(); ApplicationInfo mdmApplicationInfo = ipm.getApplicationInfo(mdmPackageName, 0, profileId); return mdmApplicationInfo; } catch (RemoteException e) { Log.e(TAG, "Error while retrieving application info for package " + mdmPackageName + ", userId " + profileId, e); return null; } } public static boolean isBandwidthControlEnabled() { final INetworkManagementService netManager = INetworkManagementService.Stub .asInterface(ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE)); try { return netManager.isBandwidthControlEnabled(); } catch (RemoteException e) { return false; } } /** * Returns an accessible SpannableString. * @param displayText the text to display * @param accessibileText the text text-to-speech engines should read */ public static SpannableString createAccessibleSequence(CharSequence displayText, String accessibileText) { SpannableString str = new SpannableString(displayText); str.setSpan(new TtsSpan.TextBuilder(accessibileText).build(), 0, displayText.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE); return str; } /** * Returns the user id present in the bundle with * {@link Intent#EXTRA_USER_ID} if it belongs to the current user. * * @throws SecurityException if the given userId does not belong to the * current user group. */ public static int getUserIdFromBundle(Context context, Bundle bundle) { return getUserIdFromBundle(context, bundle, false); } /** * Returns the user id present in the bundle with * {@link Intent#EXTRA_USER_ID} if it belongs to the current user. * * @param isInternal indicating if the caller is "internal" to the system, * meaning we're willing to trust extras like * {@link ChooseLockSettingsHelper#EXTRA_ALLOW_ANY_USER}. * @throws SecurityException if the given userId does not belong to the * current user group. */ public static int getUserIdFromBundle(Context context, Bundle bundle, boolean isInternal) { if (bundle == null) { return getCredentialOwnerUserId(context); } final boolean allowAnyUser = isInternal && bundle.getBoolean(ChooseLockSettingsHelper.EXTRA_ALLOW_ANY_USER, false); int userId = bundle.getInt(Intent.EXTRA_USER_ID, UserHandle.myUserId()); if (userId == LockPatternUtils.USER_FRP) { return allowAnyUser ? userId : enforceSystemUser(context, userId); } else { return allowAnyUser ? userId : enforceSameOwner(context, userId); } } /** * Returns the given user id if the current user is the system user. * * @throws SecurityException if the current user is not the system user. */ public static int enforceSystemUser(Context context, int userId) { if (UserHandle.myUserId() == UserHandle.USER_SYSTEM) { return userId; } throw new SecurityException("Given user id " + userId + " must only be used from " + "USER_SYSTEM, but current user is " + UserHandle.myUserId()); } /** * Returns the given user id if it belongs to the current user. * * @throws SecurityException if the given userId does not belong to the current user group. */ public static int enforceSameOwner(Context context, int userId) { final UserManager um = getUserManager(context); final int[] profileIds = um.getProfileIdsWithDisabled(UserHandle.myUserId()); if (ArrayUtils.contains(profileIds, userId)) { return userId; } throw new SecurityException("Given user id " + userId + " does not belong to user " + UserHandle.myUserId()); } /** * Returns the effective credential owner of the calling user. */ public static int getCredentialOwnerUserId(Context context) { return getCredentialOwnerUserId(context, UserHandle.myUserId()); } /** * Returns the user id of the credential owner of the given user id. */ public static int getCredentialOwnerUserId(Context context, int userId) { UserManager um = getUserManager(context); return um.getCredentialOwnerProfile(userId); } private static final StringBuilder sBuilder = new StringBuilder(50); private static final java.util.Formatter sFormatter = new java.util.Formatter( sBuilder, Locale.getDefault()); public static String formatDateRange(Context context, long start, long end) { final int flags = FORMAT_SHOW_DATE | FORMAT_ABBREV_MONTH; synchronized (sBuilder) { sBuilder.setLength(0); return DateUtils.formatDateRange(context, sFormatter, start, end, flags, null) .toString(); } } public static boolean isDeviceProvisioned(Context context) { return Settings.Global.getInt(context.getContentResolver(), Settings.Global.DEVICE_PROVISIONED, 0) != 0; } public static boolean startQuietModeDialogIfNecessary(Context context, UserManager um, int userId) { if (um.isQuietModeEnabled(UserHandle.of(userId))) { final Intent intent = UnlaunchableAppActivity.createInQuietModeDialogIntent(userId); context.startActivity(intent); return true; } return false; } public static boolean unlockWorkProfileIfNecessary(Context context, int userId) { try { if (!ActivityManager.getService().isUserRunning(userId, ActivityManager.FLAG_AND_LOCKED)) { return false; } } catch (RemoteException e) { return false; } if (!(new LockPatternUtils(context)).isSecure(userId)) { return false; } return confirmWorkProfileCredentials(context, userId); } private static boolean confirmWorkProfileCredentials(Context context, int userId) { final KeyguardManager km = (KeyguardManager) context.getSystemService( Context.KEYGUARD_SERVICE); final Intent unlockIntent = km.createConfirmDeviceCredentialIntent(null, null, userId); if (unlockIntent != null) { context.startActivity(unlockIntent); return true; } else { return false; } } public static CharSequence getApplicationLabel(Context context, String packageName) { try { final ApplicationInfo appInfo = context.getPackageManager().getApplicationInfo( packageName, PackageManager.MATCH_DISABLED_COMPONENTS | PackageManager.MATCH_ANY_USER); return appInfo.loadLabel(context.getPackageManager()); } catch (PackageManager.NameNotFoundException e) { Log.w(TAG, "Unable to find info for package: " + packageName); } return null; } public static boolean isPackageDirectBootAware(Context context, String packageName) { try { final ApplicationInfo ai = context.getPackageManager().getApplicationInfo( packageName, 0); return ai.isDirectBootAware() || ai.isPartiallyDirectBootAware(); } catch (NameNotFoundException ignored) { } return false; } /** * Returns a context created from the given context for the given user, or null if it fails */ public static Context createPackageContextAsUser(Context context, int userId) { try { return context.createPackageContextAsUser( context.getPackageName(), 0 /* flags */, UserHandle.of(userId)); } catch (PackageManager.NameNotFoundException e) { Log.e(TAG, "Failed to create user context", e); } return null; } public static FingerprintManager getFingerprintManagerOrNull(Context context) { if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_FINGERPRINT)) { return (FingerprintManager) context.getSystemService(Context.FINGERPRINT_SERVICE); } else { return null; } } public static boolean hasFingerprintHardware(Context context) { FingerprintManager fingerprintManager = getFingerprintManagerOrNull(context); return fingerprintManager != null && fingerprintManager.isHardwareDetected(); } /** * Launches an intent which may optionally have a user id defined. * @param fragment Fragment to use to launch the activity. * @param intent Intent to launch. */ public static void launchIntent(Fragment fragment, Intent intent) { try { final int userId = intent.getIntExtra(Intent.EXTRA_USER_ID, -1); if (userId == -1) { fragment.startActivity(intent); } else { fragment.getActivity().startActivityAsUser(intent, new UserHandle(userId)); } } catch (ActivityNotFoundException e) { Log.w(TAG, "No activity found for " + intent); } } public static boolean isDemoUser(Context context) { return UserManager.isDeviceInDemoMode(context) && getUserManager(context).isDemoUser(); } public static ComponentName getDeviceOwnerComponent(Context context) { final DevicePolicyManager dpm = (DevicePolicyManager) context.getSystemService( Context.DEVICE_POLICY_SERVICE); return dpm.getDeviceOwnerComponentOnAnyUser(); } /** * Returns if a given user is a profile of another user. * @param user The user whose profiles wibe checked. * @param profile The (potential) profile. * @return if the profile is actually a profile */ public static boolean isProfileOf(UserInfo user, UserInfo profile) { return user.id == profile.id || (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID && user.profileGroupId == profile.profileGroupId); } /** * Tries to initalize a volume with the given bundle. If it is a valid, private, and readable * {@link VolumeInfo}, it is returned. If it is not valid, null is returned. */ @Nullable public static VolumeInfo maybeInitializeVolume(StorageManager sm, Bundle bundle) { final String volumeId = bundle.getString(VolumeInfo.EXTRA_VOLUME_ID, VolumeInfo.ID_PRIVATE_INTERNAL); VolumeInfo volume = sm.findVolumeById(volumeId); return isVolumeValid(volume) ? volume : null; } /** * Return {@code true} if the supplied package is device owner or profile owner of at * least one user. * @param userManager used to get profile owner app for each user * @param devicePolicyManager used to check whether it is device owner app * @param packageName package to check about */ public static boolean isProfileOrDeviceOwner(UserManager userManager, DevicePolicyManager devicePolicyManager, String packageName) { List<UserInfo> userInfos = userManager.getUsers(); if (devicePolicyManager.isDeviceOwnerAppOnAnyUser(packageName)) { return true; } for (int i = 0, size = userInfos.size(); i < size; i++) { ComponentName cn = devicePolicyManager.getProfileOwnerAsUser(userInfos.get(i).id); if (cn != null && cn.getPackageName().equals(packageName)) { return true; } } return false; } /** * Return the resource id to represent the install status for an app */ @StringRes public static int getInstallationStatus(ApplicationInfo info) { if ((info.flags & ApplicationInfo.FLAG_INSTALLED) == 0) { return R.string.not_installed; } return info.enabled ? R.string.installed : R.string.disabled; } private static boolean isVolumeValid(VolumeInfo volume) { return (volume != null) && (volume.getType() == VolumeInfo.TYPE_PRIVATE) && volume.isMountedReadable(); } public static void setEditTextCursorPosition(EditText editText) { editText.setSelection(editText.getText().length()); } /** * Sets the preference icon with a drawable that is scaled down to to avoid crashing Settings if * it's too big. */ public static void setSafeIcon(Preference pref, Drawable icon) { Drawable safeIcon = icon; if ((icon != null) && !(icon instanceof VectorDrawable)) { safeIcon = getSafeDrawable(icon, 500, 500); } pref.setIcon(safeIcon); } /** * Gets a drawable with a limited size to avoid crashing Settings if it's too big. * * @param original original drawable, typically an app icon. * @param maxWidth maximum width, in pixels. * @param maxHeight maximum height, in pixels. */ public static Drawable getSafeDrawable(Drawable original, int maxWidth, int maxHeight) { final int actualWidth = original.getMinimumWidth(); final int actualHeight = original.getMinimumHeight(); if (actualWidth <= maxWidth && actualHeight <= maxHeight) { return original; } float scaleWidth = ((float) maxWidth) / actualWidth; float scaleHeight = ((float) maxHeight) / actualHeight; float scale = Math.min(scaleWidth, scaleHeight); final int width = (int) (actualWidth * scale); final int height = (int) (actualHeight * scale); final Bitmap bitmap; if (original instanceof BitmapDrawable) { bitmap = Bitmap.createScaledBitmap(((BitmapDrawable) original).getBitmap(), width, height, false); } else { bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); final Canvas canvas = new Canvas(bitmap); original.setBounds(0, 0, canvas.getWidth(), canvas.getHeight()); original.draw(canvas); } return new BitmapDrawable(null, bitmap); } /** * Get the {@link Drawable} that represents the app icon */ public static Drawable getBadgedIcon(IconDrawableFactory iconDrawableFactory, PackageManager packageManager, String packageName, int userId) { try { final ApplicationInfo appInfo = packageManager.getApplicationInfoAsUser( packageName, PackageManager.GET_META_DATA, userId); return iconDrawableFactory.getBadgedIcon(appInfo, userId); } catch (PackageManager.NameNotFoundException e) { return packageManager.getDefaultActivityIcon(); } } }