src/com/android/settings/datausage/AppDataUsage.java - LeafOS-Project/android_packages_apps_Settings - Gitiles

 /*
  * Copyright (C) 2018 The Android Open Source Project
  *
  * 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.datausage;

 import static android.net.NetworkPolicyManager.POLICY_REJECT_METERED_BACKGROUND;

 import android.app.Activity;
 import android.app.settings.SettingsEnums;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.graphics.drawable.Drawable;
 import android.net.NetworkTemplate;
 import android.os.Bundle;
 import android.os.Process;
 import android.os.UserHandle;
 import android.telephony.SubscriptionManager;
 import android.util.ArraySet;
 import android.util.IconDrawableFactory;
 import android.util.Log;
 import android.view.View;
 import android.widget.AdapterView;

 import androidx.annotation.VisibleForTesting;
 import androidx.loader.app.LoaderManager;
 import androidx.loader.content.Loader;
 import androidx.preference.Preference;
 import androidx.preference.Preference.OnPreferenceChangeListener;
 import androidx.preference.PreferenceCategory;
 import androidx.recyclerview.widget.DefaultItemAnimator;
 import androidx.recyclerview.widget.RecyclerView;

 import com.android.settings.R;
 import com.android.settings.applications.AppInfoBase;
 import com.android.settings.network.SubscriptionUtil;
 import com.android.settings.widget.EntityHeaderController;
 import com.android.settingslib.AppItem;
 import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
 import com.android.settingslib.RestrictedLockUtilsInternal;
 import com.android.settingslib.RestrictedSwitchPreference;
 import com.android.settingslib.net.NetworkCycleDataForUid;
 import com.android.settingslib.net.NetworkCycleDataForUidLoader;
 import com.android.settingslib.net.UidDetail;
 import com.android.settingslib.net.UidDetailProvider;

 import java.util.ArrayList;
 import java.util.List;

 public class AppDataUsage extends DataUsageBaseFragment implements OnPreferenceChangeListener,
         DataSaverBackend.Listener {

     private static final String TAG = "AppDataUsage";

     static final String ARG_APP_ITEM = "app_item";
     static final String ARG_NETWORK_TEMPLATE = "network_template";
     static final String ARG_NETWORK_CYCLES = "network_cycles";
     static final String ARG_SELECTED_CYCLE = "selected_cycle";

     private static final String KEY_TOTAL_USAGE = "total_usage";
     private static final String KEY_FOREGROUND_USAGE = "foreground_usage";
     private static final String KEY_BACKGROUND_USAGE = "background_usage";
     private static final String KEY_APP_SETTINGS = "app_settings";
     private static final String KEY_RESTRICT_BACKGROUND = "restrict_background";
     private static final String KEY_APP_LIST = "app_list";
     private static final String KEY_CYCLE = "cycle";
     private static final String KEY_UNRESTRICTED_DATA = "unrestricted_data_saver";

     private static final int LOADER_APP_USAGE_DATA = 2;
     private static final int LOADER_APP_PREF = 3;

     private PackageManager mPackageManager;
     private final ArraySet<String> mPackages = new ArraySet<>();
     private Preference mTotalUsage;
     private Preference mForegroundUsage;
     private Preference mBackgroundUsage;
     private Preference mAppSettings;
     private RestrictedSwitchPreference mRestrictBackground;
     private PreferenceCategory mAppList;

     private Drawable mIcon;
     @VisibleForTesting
     CharSequence mLabel;
     @VisibleForTesting
     String mPackageName;
     private CycleAdapter mCycleAdapter;

     private List<NetworkCycleDataForUid> mUsageData;
     @VisibleForTesting
     NetworkTemplate mTemplate;
     private AppItem mAppItem;
     private Intent mAppSettingsIntent;
     private SpinnerPreference mCycle;
     private RestrictedSwitchPreference mUnrestrictedData;
     private DataSaverBackend mDataSaverBackend;
     private Context mContext;
     private ArrayList<Long> mCycles;
     private long mSelectedCycle;
     private boolean mIsLoading;

     public boolean isSimHardwareVisible(Context context) {
         return SubscriptionUtil.isSimHardwareVisible(context);
     }

     @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
         mContext = getContext();
         mPackageManager = getPackageManager();
         final Bundle args = getArguments();

         mAppItem = (args != null) ? (AppItem) args.getParcelable(ARG_APP_ITEM) : null;
         mTemplate = (args != null) ? (NetworkTemplate) args.getParcelable(ARG_NETWORK_TEMPLATE)
                 : null;
         mCycles = (args != null) ? (ArrayList) args.getSerializable(ARG_NETWORK_CYCLES)
             : null;
         mSelectedCycle = (args != null) ? args.getLong(ARG_SELECTED_CYCLE) : 0L;

         if (mTemplate == null) {
             mTemplate = DataUsageUtils.getDefaultTemplate(mContext,
                     SubscriptionManager.getDefaultDataSubscriptionId());
         }
         if (mAppItem == null) {
             int uid = (args != null) ? args.getInt(AppInfoBase.ARG_PACKAGE_UID, -1)
                     : getActivity().getIntent().getIntExtra(AppInfoBase.ARG_PACKAGE_UID, -1);
             if (uid == -1) {
                 // TODO: Log error.
                 getActivity().finish();
             } else {
                 addUid(uid);
                 mAppItem = new AppItem(uid);
                 mAppItem.addUid(uid);
             }
         } else {
             for (int i = 0; i < mAppItem.uids.size(); i++) {
                 addUid(mAppItem.uids.keyAt(i));
             }
         }

         if (mAppItem.key > 0 && UserHandle.isApp(mAppItem.key)) {
             // In case we've been asked data usage for an app, automatically
             // include data usage of the corresponding SDK sandbox
             final int appSandboxUid = Process.toSdkSandboxUid(mAppItem.key);
             if (!mAppItem.uids.get(appSandboxUid)) {
                 mAppItem.addUid(appSandboxUid);
             }
         }
         mTotalUsage = findPreference(KEY_TOTAL_USAGE);
         mForegroundUsage = findPreference(KEY_FOREGROUND_USAGE);
         mBackgroundUsage = findPreference(KEY_BACKGROUND_USAGE);

         initCycle();

         final UidDetailProvider uidDetailProvider = getUidDetailProvider();

         if (mAppItem.key > 0) {
             if ((!isSimHardwareVisible(mContext)) || !UserHandle.isApp(mAppItem.key)) {
                 final UidDetail uidDetail = uidDetailProvider.getUidDetail(mAppItem.key, true);
                 mIcon = uidDetail.icon;
                 mLabel = uidDetail.label;
                 removePreference(KEY_UNRESTRICTED_DATA);
                 removePreference(KEY_RESTRICT_BACKGROUND);
             } else {
                 if (mPackages.size() != 0) {
                     try {
                         final ApplicationInfo info = mPackageManager.getApplicationInfoAsUser(
                             mPackages.valueAt(0), 0, UserHandle.getUserId(mAppItem.key));
                         mIcon = IconDrawableFactory.newInstance(getActivity()).getBadgedIcon(info);
                         mLabel = info.loadLabel(mPackageManager);
                         mPackageName = info.packageName;
                     } catch (PackageManager.NameNotFoundException e) {
                     }
                 }
                 mRestrictBackground = findPreference(KEY_RESTRICT_BACKGROUND);
                 mRestrictBackground.setOnPreferenceChangeListener(this);
                 mUnrestrictedData = findPreference(KEY_UNRESTRICTED_DATA);
                 mUnrestrictedData.setOnPreferenceChangeListener(this);
             }
             mDataSaverBackend = new DataSaverBackend(mContext);
             mAppSettings = findPreference(KEY_APP_SETTINGS);

             mAppSettingsIntent = new Intent(Intent.ACTION_MANAGE_NETWORK_USAGE);
             mAppSettingsIntent.addCategory(Intent.CATEGORY_DEFAULT);

             final PackageManager pm = getPackageManager();
             boolean matchFound = false;
             for (String packageName : mPackages) {
                 mAppSettingsIntent.setPackage(packageName);
                 if (pm.resolveActivity(mAppSettingsIntent, 0) != null) {
                     matchFound = true;
                     break;
                 }
             }
             if (!matchFound) {
                 removePreference(KEY_APP_SETTINGS);
                 mAppSettings = null;
             }

             if (mPackages.size() > 1) {
                 mAppList = findPreference(KEY_APP_LIST);
                 LoaderManager.getInstance(this).restartLoader(LOADER_APP_PREF, Bundle.EMPTY,
                         mAppPrefCallbacks);
             } else {
                 removePreference(KEY_APP_LIST);
             }
         } else {
             final Context context = getActivity();
             final UidDetail uidDetail = uidDetailProvider.getUidDetail(mAppItem.key, true);
             mIcon = uidDetail.icon;
             mLabel = uidDetail.label;
             mPackageName = context.getPackageName();

             removePreference(KEY_UNRESTRICTED_DATA);
             removePreference(KEY_APP_SETTINGS);
             removePreference(KEY_RESTRICT_BACKGROUND);
             removePreference(KEY_APP_LIST);
         }

         addEntityHeader();
     }

     @Override
     public void onResume() {
         super.onResume();
         // No animations will occur before:
         //  - LOADER_APP_USAGE_DATA initially updates the cycle
         //  - updatePrefs() initially updates the preference visibility
         // This is mainly for the cycle spinner, because when the page is entered from the
         // AppInfoDashboardFragment, there is no way to know whether the cycle data is available
         // before finished the async loading.
         // The animator will be set back if any page updates happens after loading, in
         // setBackPreferenceListAnimatorIfLoaded().
         mIsLoading = true;
         getListView().setItemAnimator(null);
         if (mDataSaverBackend != null) {
             mDataSaverBackend.addListener(this);
         }
         LoaderManager.getInstance(this).restartLoader(LOADER_APP_USAGE_DATA, null /* args */,
                 mUidDataCallbacks);
         updatePrefs();
     }

     @Override
     public void onPause() {
         super.onPause();
         if (mDataSaverBackend != null) {
             mDataSaverBackend.remListener(this);
         }
     }

     @Override
     public boolean onPreferenceChange(Preference preference, Object newValue) {
         if (preference == mRestrictBackground) {
             mDataSaverBackend.setIsDenylisted(mAppItem.key, mPackageName, !(Boolean) newValue);
             updatePrefs();
             return true;
         } else if (preference == mUnrestrictedData) {
             mDataSaverBackend.setIsAllowlisted(mAppItem.key, mPackageName, (Boolean) newValue);
             return true;
         }
         return false;
     }

     @Override
     public boolean onPreferenceTreeClick(Preference preference) {
         if (preference == mAppSettings) {
             // TODO: target towards entire UID instead of just first package
             getActivity().startActivityAsUser(mAppSettingsIntent, new UserHandle(
                     UserHandle.getUserId(mAppItem.key)));
             return true;
         }
         return super.onPreferenceTreeClick(preference);
     }

     @Override
     protected int getPreferenceScreenResId() {
         return R.xml.app_data_usage;
     }

     @Override
     protected String getLogTag() {
         return TAG;
     }

     @VisibleForTesting
     void updatePrefs() {
         updatePrefs(getAppRestrictBackground(), getUnrestrictData());
     }

     @VisibleForTesting
     UidDetailProvider getUidDetailProvider() {
         return new UidDetailProvider(mContext);
     }

     private void initCycle() {
         mCycle = findPreference(KEY_CYCLE);
         mCycleAdapter = new CycleAdapter(mContext, mCycle, mCycleListener);
         if (mCycles != null) {
             // If coming from a page like DataUsageList where already has a selected cycle, display
             // that before loading to reduce flicker.
             mCycleAdapter.setInitialCycleList(mCycles, mSelectedCycle);
             mCycle.setHasCycles(true);
         }
     }

     /**
      * Sets back the preference list's animator if the loading is finished.
      *
      * The preference list's animator was temporarily removed before loading in onResume().
      * When need to update the preference visibility in this page after the loading, adding the
      * animator back to keeping the usual animations.
      */
     private void setBackPreferenceListAnimatorIfLoaded() {
         if (mIsLoading) {
             return;
         }
         RecyclerView recyclerView = getListView();
         if (recyclerView.getItemAnimator() == null) {
             recyclerView.setItemAnimator(new DefaultItemAnimator());
         }
     }

     private void updatePrefs(boolean restrictBackground, boolean unrestrictData) {
         if (!isSimHardwareVisible(mContext)) {
             return;
         }
         setBackPreferenceListAnimatorIfLoaded();
         final EnforcedAdmin admin = RestrictedLockUtilsInternal.checkIfMeteredDataRestricted(
                 mContext, mPackageName, UserHandle.getUserId(mAppItem.key));
         if (mRestrictBackground != null) {
             mRestrictBackground.setChecked(!restrictBackground);
             mRestrictBackground.setDisabledByAdmin(admin);
         }
         if (mUnrestrictedData != null) {
             if (restrictBackground) {
                 mUnrestrictedData.setVisible(false);
             } else {
                 mUnrestrictedData.setVisible(true);
                 mUnrestrictedData.setChecked(unrestrictData);
                 mUnrestrictedData.setDisabledByAdmin(admin);
             }
         }
     }

     private void addUid(int uid) {
         if (Process.isSdkSandboxUid(uid)) {
             // For a sandbox process, get the associated app UID
             uid = Process.getAppUidForSdkSandboxUid(uid);
         }
         String[] packages = mPackageManager.getPackagesForUid(uid);
         if (packages != null) {
             for (int i = 0; i < packages.length; i++) {
                 mPackages.add(packages[i]);
             }
         }
     }

     @VisibleForTesting
     void bindData(int position) {
         final long backgroundBytes, foregroundBytes;
         if (mUsageData == null || position >= mUsageData.size()) {
             backgroundBytes = foregroundBytes = 0;
             mCycle.setHasCycles(false);
         } else {
             mCycle.setHasCycles(true);
             final NetworkCycleDataForUid data = mUsageData.get(position);
             backgroundBytes = data.getBackgroudUsage();
             foregroundBytes = data.getForegroudUsage();
         }
         final long totalBytes = backgroundBytes + foregroundBytes;

         mTotalUsage.setSummary(DataUsageUtils.formatDataUsage(mContext, totalBytes));
         mForegroundUsage.setSummary(DataUsageUtils.formatDataUsage(mContext, foregroundBytes));
         mBackgroundUsage.setSummary(DataUsageUtils.formatDataUsage(mContext, backgroundBytes));
     }

     private boolean getAppRestrictBackground() {
         final int uid = mAppItem.key;
         final int uidPolicy = services.mPolicyManager.getUidPolicy(uid);
         return (uidPolicy & POLICY_REJECT_METERED_BACKGROUND) != 0;
     }

     private boolean getUnrestrictData() {
         if (mDataSaverBackend != null) {
             return mDataSaverBackend.isAllowlisted(mAppItem.key);
         }
         return false;
     }

     @VisibleForTesting
     void addEntityHeader() {
         String pkg = mPackages.size() != 0 ? mPackages.valueAt(0) : null;
         int uid = 0;
         if (pkg != null) {
             try {
                 uid = mPackageManager.getPackageUidAsUser(pkg,
                         UserHandle.getUserId(mAppItem.key));
             } catch (PackageManager.NameNotFoundException e) {
                 Log.w(TAG, "Skipping UID because cannot find package " + pkg);
             }
         }

         final boolean showInfoButton = mAppItem.key > 0;

         final Activity activity = getActivity();
         final Preference pref = EntityHeaderController
                 .newInstance(activity, this, null /* header */)
                 .setRecyclerView(getListView(), getSettingsLifecycle())
                 .setUid(uid)
                 .setHasAppInfoLink(showInfoButton)
                 .setButtonActions(EntityHeaderController.ActionType.ACTION_NONE,
                         EntityHeaderController.ActionType.ACTION_NONE)
                 .setIcon(mIcon)
                 .setLabel(mLabel)
                 .setPackageName(pkg)
                 .done(activity, getPrefContext());
         getPreferenceScreen().addPreference(pref);
     }

     @Override
     public int getMetricsCategory() {
         return SettingsEnums.APP_DATA_USAGE;
     }

     private AdapterView.OnItemSelectedListener mCycleListener =
             new AdapterView.OnItemSelectedListener() {
         @Override
         public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
             bindData(position);
         }

         @Override
         public void onNothingSelected(AdapterView<?> parent) {
             // ignored
         }
     };

     @VisibleForTesting
     final LoaderManager.LoaderCallbacks<List<NetworkCycleDataForUid>> mUidDataCallbacks =
         new LoaderManager.LoaderCallbacks<List<NetworkCycleDataForUid>>() {
             @Override
             public Loader<List<NetworkCycleDataForUid>> onCreateLoader(int id, Bundle args) {
                 final NetworkCycleDataForUidLoader.Builder builder
                     = NetworkCycleDataForUidLoader.builder(mContext);
                 builder.setRetrieveDetail(true)
                     .setNetworkTemplate(mTemplate);
                 for (int i = 0; i < mAppItem.uids.size(); i++) {
                     builder.addUid(mAppItem.uids.keyAt(i));
                 }
                 if (mCycles != null) {
                     builder.setCycles(mCycles);
                 }
                 return builder.build();
             }

             @Override
             public void onLoadFinished(Loader<List<NetworkCycleDataForUid>> loader,
                     List<NetworkCycleDataForUid> data) {
                 mUsageData = data;
                 mCycleAdapter.updateCycleList(data);
                 if (mSelectedCycle > 0L) {
                     final int numCycles = data.size();
                     int position = 0;
                     for (int i = 0; i < numCycles; i++) {
                         final NetworkCycleDataForUid cycleData = data.get(i);
                         if (cycleData.getEndTime() == mSelectedCycle) {
                             position = i;
                             break;
                         }
                     }
                     if (position > 0) {
                         mCycle.setSelection(position);
                     }
                     bindData(position);
                 } else {
                     bindData(0 /* position */);
                 }
                 mIsLoading = false;
             }

             @Override
             public void onLoaderReset(Loader<List<NetworkCycleDataForUid>> loader) {
             }
         };

     private final LoaderManager.LoaderCallbacks<ArraySet<Preference>> mAppPrefCallbacks =
         new LoaderManager.LoaderCallbacks<ArraySet<Preference>>() {
             @Override
             public Loader<ArraySet<Preference>> onCreateLoader(int i, Bundle bundle) {
                 return new AppPrefLoader(getPrefContext(), mPackages, getPackageManager());
             }

             @Override
             public void onLoadFinished(Loader<ArraySet<Preference>> loader,
                     ArraySet<Preference> preferences) {
                 if (preferences != null && mAppList != null) {
                     for (Preference preference : preferences) {
                         mAppList.addPreference(preference);
                     }
                 }
             }

             @Override
             public void onLoaderReset(Loader<ArraySet<Preference>> loader) {
             }
         };

     @Override
     public void onDataSaverChanged(boolean isDataSaving) {

     }

     @Override
     public void onAllowlistStatusChanged(int uid, boolean isAllowlisted) {
         if (mAppItem.uids.get(uid, false)) {
             updatePrefs(getAppRestrictBackground(), isAllowlisted);
         }
     }

     @Override
     public void onDenylistStatusChanged(int uid, boolean isDenylisted) {
         if (mAppItem.uids.get(uid, false)) {
             updatePrefs(isDenylisted, getUnrestrictData());
         }
     }
 }
	/*
	* Copyright (C) 2018 The Android Open Source Project
	*
	* 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.datausage;

	import static android.net.NetworkPolicyManager.POLICY_REJECT_METERED_BACKGROUND;

	import android.app.Activity;
	import android.app.settings.SettingsEnums;
	import android.content.Context;
	import android.content.Intent;
	import android.content.pm.ApplicationInfo;
	import android.content.pm.PackageManager;
	import android.graphics.drawable.Drawable;
	import android.net.NetworkTemplate;
	import android.os.Bundle;
	import android.os.Process;
	import android.os.UserHandle;
	import android.telephony.SubscriptionManager;
	import android.util.ArraySet;
	import android.util.IconDrawableFactory;
	import android.util.Log;
	import android.view.View;
	import android.widget.AdapterView;

	import androidx.annotation.VisibleForTesting;
	import androidx.loader.app.LoaderManager;
	import androidx.loader.content.Loader;
	import androidx.preference.Preference;
	import androidx.preference.Preference.OnPreferenceChangeListener;
	import androidx.preference.PreferenceCategory;
	import androidx.recyclerview.widget.DefaultItemAnimator;
	import androidx.recyclerview.widget.RecyclerView;

	import com.android.settings.R;
	import com.android.settings.applications.AppInfoBase;
	import com.android.settings.network.SubscriptionUtil;
	import com.android.settings.widget.EntityHeaderController;
	import com.android.settingslib.AppItem;
	import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
	import com.android.settingslib.RestrictedLockUtilsInternal;
	import com.android.settingslib.RestrictedSwitchPreference;
	import com.android.settingslib.net.NetworkCycleDataForUid;
	import com.android.settingslib.net.NetworkCycleDataForUidLoader;
	import com.android.settingslib.net.UidDetail;
	import com.android.settingslib.net.UidDetailProvider;

	import java.util.ArrayList;
	import java.util.List;

	public class AppDataUsage extends DataUsageBaseFragment implements OnPreferenceChangeListener,
	DataSaverBackend.Listener {

	private static final String TAG = "AppDataUsage";

	static final String ARG_APP_ITEM = "app_item";
	static final String ARG_NETWORK_TEMPLATE = "network_template";
	static final String ARG_NETWORK_CYCLES = "network_cycles";
	static final String ARG_SELECTED_CYCLE = "selected_cycle";

	private static final String KEY_TOTAL_USAGE = "total_usage";
	private static final String KEY_FOREGROUND_USAGE = "foreground_usage";
	private static final String KEY_BACKGROUND_USAGE = "background_usage";
	private static final String KEY_APP_SETTINGS = "app_settings";
	private static final String KEY_RESTRICT_BACKGROUND = "restrict_background";
	private static final String KEY_APP_LIST = "app_list";
	private static final String KEY_CYCLE = "cycle";
	private static final String KEY_UNRESTRICTED_DATA = "unrestricted_data_saver";

	private static final int LOADER_APP_USAGE_DATA = 2;
	private static final int LOADER_APP_PREF = 3;

	private PackageManager mPackageManager;
	private final ArraySet<String> mPackages = new ArraySet<>();
	private Preference mTotalUsage;
	private Preference mForegroundUsage;
	private Preference mBackgroundUsage;
	private Preference mAppSettings;
	private RestrictedSwitchPreference mRestrictBackground;
	private PreferenceCategory mAppList;

	private Drawable mIcon;
	@VisibleForTesting
	CharSequence mLabel;
	@VisibleForTesting
	String mPackageName;
	private CycleAdapter mCycleAdapter;

	private List<NetworkCycleDataForUid> mUsageData;
	@VisibleForTesting
	NetworkTemplate mTemplate;
	private AppItem mAppItem;
	private Intent mAppSettingsIntent;
	private SpinnerPreference mCycle;
	private RestrictedSwitchPreference mUnrestrictedData;
	private DataSaverBackend mDataSaverBackend;
	private Context mContext;
	private ArrayList<Long> mCycles;
	private long mSelectedCycle;
	private boolean mIsLoading;

	public boolean isSimHardwareVisible(Context context) {
	return SubscriptionUtil.isSimHardwareVisible(context);
	}

	@Override
	public void onCreate(Bundle icicle) {
	super.onCreate(icicle);
	mContext = getContext();
	mPackageManager = getPackageManager();
	final Bundle args = getArguments();

	mAppItem = (args != null) ? (AppItem) args.getParcelable(ARG_APP_ITEM) : null;
	mTemplate = (args != null) ? (NetworkTemplate) args.getParcelable(ARG_NETWORK_TEMPLATE)
	: null;
	mCycles = (args != null) ? (ArrayList) args.getSerializable(ARG_NETWORK_CYCLES)
	: null;
	mSelectedCycle = (args != null) ? args.getLong(ARG_SELECTED_CYCLE) : 0L;

	if (mTemplate == null) {
	mTemplate = DataUsageUtils.getDefaultTemplate(mContext,
	SubscriptionManager.getDefaultDataSubscriptionId());
	}
	if (mAppItem == null) {
	int uid = (args != null) ? args.getInt(AppInfoBase.ARG_PACKAGE_UID, -1)
	: getActivity().getIntent().getIntExtra(AppInfoBase.ARG_PACKAGE_UID, -1);
	if (uid == -1) {
	// TODO: Log error.
	getActivity().finish();
	} else {
	addUid(uid);
	mAppItem = new AppItem(uid);
	mAppItem.addUid(uid);
	}
	} else {
	for (int i = 0; i < mAppItem.uids.size(); i++) {
	addUid(mAppItem.uids.keyAt(i));
	}
	}

	if (mAppItem.key > 0 && UserHandle.isApp(mAppItem.key)) {
	// In case we've been asked data usage for an app, automatically
	// include data usage of the corresponding SDK sandbox
	final int appSandboxUid = Process.toSdkSandboxUid(mAppItem.key);
	if (!mAppItem.uids.get(appSandboxUid)) {
	mAppItem.addUid(appSandboxUid);
	}
	}
	mTotalUsage = findPreference(KEY_TOTAL_USAGE);
	mForegroundUsage = findPreference(KEY_FOREGROUND_USAGE);
	mBackgroundUsage = findPreference(KEY_BACKGROUND_USAGE);

	initCycle();

	final UidDetailProvider uidDetailProvider = getUidDetailProvider();

	if (mAppItem.key > 0) {
	if ((!isSimHardwareVisible(mContext)) \|\| !UserHandle.isApp(mAppItem.key)) {
	final UidDetail uidDetail = uidDetailProvider.getUidDetail(mAppItem.key, true);
	mIcon = uidDetail.icon;
	mLabel = uidDetail.label;
	removePreference(KEY_UNRESTRICTED_DATA);
	removePreference(KEY_RESTRICT_BACKGROUND);
	} else {
	if (mPackages.size() != 0) {
	try {
	final ApplicationInfo info = mPackageManager.getApplicationInfoAsUser(
	mPackages.valueAt(0), 0, UserHandle.getUserId(mAppItem.key));
	mIcon = IconDrawableFactory.newInstance(getActivity()).getBadgedIcon(info);
	mLabel = info.loadLabel(mPackageManager);
	mPackageName = info.packageName;
	} catch (PackageManager.NameNotFoundException e) {
	}
	}
	mRestrictBackground = findPreference(KEY_RESTRICT_BACKGROUND);
	mRestrictBackground.setOnPreferenceChangeListener(this);
	mUnrestrictedData = findPreference(KEY_UNRESTRICTED_DATA);
	mUnrestrictedData.setOnPreferenceChangeListener(this);
	}
	mDataSaverBackend = new DataSaverBackend(mContext);
	mAppSettings = findPreference(KEY_APP_SETTINGS);

	mAppSettingsIntent = new Intent(Intent.ACTION_MANAGE_NETWORK_USAGE);
	mAppSettingsIntent.addCategory(Intent.CATEGORY_DEFAULT);

	final PackageManager pm = getPackageManager();
	boolean matchFound = false;
	for (String packageName : mPackages) {
	mAppSettingsIntent.setPackage(packageName);
	if (pm.resolveActivity(mAppSettingsIntent, 0) != null) {
	matchFound = true;
	break;
	}
	}
	if (!matchFound) {
	removePreference(KEY_APP_SETTINGS);
	mAppSettings = null;
	}

	if (mPackages.size() > 1) {
	mAppList = findPreference(KEY_APP_LIST);
	LoaderManager.getInstance(this).restartLoader(LOADER_APP_PREF, Bundle.EMPTY,
	mAppPrefCallbacks);
	} else {
	removePreference(KEY_APP_LIST);
	}
	} else {
	final Context context = getActivity();
	final UidDetail uidDetail = uidDetailProvider.getUidDetail(mAppItem.key, true);
	mIcon = uidDetail.icon;
	mLabel = uidDetail.label;
	mPackageName = context.getPackageName();

	removePreference(KEY_UNRESTRICTED_DATA);
	removePreference(KEY_APP_SETTINGS);
	removePreference(KEY_RESTRICT_BACKGROUND);
	removePreference(KEY_APP_LIST);
	}

	addEntityHeader();
	}

	@Override
	public void onResume() {
	super.onResume();
	// No animations will occur before:
	// - LOADER_APP_USAGE_DATA initially updates the cycle
	// - updatePrefs() initially updates the preference visibility
	// This is mainly for the cycle spinner, because when the page is entered from the
	// AppInfoDashboardFragment, there is no way to know whether the cycle data is available
	// before finished the async loading.
	// The animator will be set back if any page updates happens after loading, in
	// setBackPreferenceListAnimatorIfLoaded().
	mIsLoading = true;
	getListView().setItemAnimator(null);
	if (mDataSaverBackend != null) {
	mDataSaverBackend.addListener(this);
	}
	LoaderManager.getInstance(this).restartLoader(LOADER_APP_USAGE_DATA, null /* args */,
	mUidDataCallbacks);
	updatePrefs();
	}

	@Override
	public void onPause() {
	super.onPause();
	if (mDataSaverBackend != null) {
	mDataSaverBackend.remListener(this);
	}
	}

	@Override
	public boolean onPreferenceChange(Preference preference, Object newValue) {
	if (preference == mRestrictBackground) {
	mDataSaverBackend.setIsDenylisted(mAppItem.key, mPackageName, !(Boolean) newValue);
	updatePrefs();
	return true;
	} else if (preference == mUnrestrictedData) {
	mDataSaverBackend.setIsAllowlisted(mAppItem.key, mPackageName, (Boolean) newValue);
	return true;
	}
	return false;
	}

	@Override
	public boolean onPreferenceTreeClick(Preference preference) {
	if (preference == mAppSettings) {
	// TODO: target towards entire UID instead of just first package
	getActivity().startActivityAsUser(mAppSettingsIntent, new UserHandle(
	UserHandle.getUserId(mAppItem.key)));
	return true;
	}
	return super.onPreferenceTreeClick(preference);
	}

	@Override
	protected int getPreferenceScreenResId() {
	return R.xml.app_data_usage;
	}

	@Override
	protected String getLogTag() {
	return TAG;
	}

	@VisibleForTesting
	void updatePrefs() {
	updatePrefs(getAppRestrictBackground(), getUnrestrictData());
	}

	@VisibleForTesting
	UidDetailProvider getUidDetailProvider() {
	return new UidDetailProvider(mContext);
	}

	private void initCycle() {
	mCycle = findPreference(KEY_CYCLE);
	mCycleAdapter = new CycleAdapter(mContext, mCycle, mCycleListener);
	if (mCycles != null) {
	// If coming from a page like DataUsageList where already has a selected cycle, display
	// that before loading to reduce flicker.
	mCycleAdapter.setInitialCycleList(mCycles, mSelectedCycle);
	mCycle.setHasCycles(true);
	}
	}

	/**
	* Sets back the preference list's animator if the loading is finished.
	*
	* The preference list's animator was temporarily removed before loading in onResume().
	* When need to update the preference visibility in this page after the loading, adding the
	* animator back to keeping the usual animations.
	*/
	private void setBackPreferenceListAnimatorIfLoaded() {
	if (mIsLoading) {
	return;
	}
	RecyclerView recyclerView = getListView();
	if (recyclerView.getItemAnimator() == null) {
	recyclerView.setItemAnimator(new DefaultItemAnimator());
	}
	}

	private void updatePrefs(boolean restrictBackground, boolean unrestrictData) {
	if (!isSimHardwareVisible(mContext)) {
	return;
	}
	setBackPreferenceListAnimatorIfLoaded();
	final EnforcedAdmin admin = RestrictedLockUtilsInternal.checkIfMeteredDataRestricted(
	mContext, mPackageName, UserHandle.getUserId(mAppItem.key));
	if (mRestrictBackground != null) {
	mRestrictBackground.setChecked(!restrictBackground);
	mRestrictBackground.setDisabledByAdmin(admin);
	}
	if (mUnrestrictedData != null) {
	if (restrictBackground) {
	mUnrestrictedData.setVisible(false);
	} else {
	mUnrestrictedData.setVisible(true);
	mUnrestrictedData.setChecked(unrestrictData);
	mUnrestrictedData.setDisabledByAdmin(admin);
	}
	}
	}

	private void addUid(int uid) {
	if (Process.isSdkSandboxUid(uid)) {
	// For a sandbox process, get the associated app UID
	uid = Process.getAppUidForSdkSandboxUid(uid);
	}
	String[] packages = mPackageManager.getPackagesForUid(uid);
	if (packages != null) {
	for (int i = 0; i < packages.length; i++) {
	mPackages.add(packages[i]);
	}
	}
	}

	@VisibleForTesting
	void bindData(int position) {
	final long backgroundBytes, foregroundBytes;
	if (mUsageData == null \|\| position >= mUsageData.size()) {
	backgroundBytes = foregroundBytes = 0;
	mCycle.setHasCycles(false);
	} else {
	mCycle.setHasCycles(true);
	final NetworkCycleDataForUid data = mUsageData.get(position);
	backgroundBytes = data.getBackgroudUsage();
	foregroundBytes = data.getForegroudUsage();
	}
	final long totalBytes = backgroundBytes + foregroundBytes;

	mTotalUsage.setSummary(DataUsageUtils.formatDataUsage(mContext, totalBytes));
	mForegroundUsage.setSummary(DataUsageUtils.formatDataUsage(mContext, foregroundBytes));
	mBackgroundUsage.setSummary(DataUsageUtils.formatDataUsage(mContext, backgroundBytes));
	}

	private boolean getAppRestrictBackground() {
	final int uid = mAppItem.key;
	final int uidPolicy = services.mPolicyManager.getUidPolicy(uid);
	return (uidPolicy & POLICY_REJECT_METERED_BACKGROUND) != 0;
	}

	private boolean getUnrestrictData() {
	if (mDataSaverBackend != null) {
	return mDataSaverBackend.isAllowlisted(mAppItem.key);
	}
	return false;
	}

	@VisibleForTesting
	void addEntityHeader() {
	String pkg = mPackages.size() != 0 ? mPackages.valueAt(0) : null;
	int uid = 0;
	if (pkg != null) {
	try {
	uid = mPackageManager.getPackageUidAsUser(pkg,
	UserHandle.getUserId(mAppItem.key));
	} catch (PackageManager.NameNotFoundException e) {
	Log.w(TAG, "Skipping UID because cannot find package " + pkg);
	}
	}

	final boolean showInfoButton = mAppItem.key > 0;

	final Activity activity = getActivity();
	final Preference pref = EntityHeaderController
	.newInstance(activity, this, null /* header */)
	.setRecyclerView(getListView(), getSettingsLifecycle())
	.setUid(uid)
	.setHasAppInfoLink(showInfoButton)
	.setButtonActions(EntityHeaderController.ActionType.ACTION_NONE,
	EntityHeaderController.ActionType.ACTION_NONE)
	.setIcon(mIcon)
	.setLabel(mLabel)
	.setPackageName(pkg)
	.done(activity, getPrefContext());
	getPreferenceScreen().addPreference(pref);
	}

	@Override
	public int getMetricsCategory() {
	return SettingsEnums.APP_DATA_USAGE;
	}

	private AdapterView.OnItemSelectedListener mCycleListener =
	new AdapterView.OnItemSelectedListener() {
	@Override
	public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
	bindData(position);
	}

	@Override
	public void onNothingSelected(AdapterView<?> parent) {
	// ignored
	}
	};

	@VisibleForTesting
	final LoaderManager.LoaderCallbacks<List<NetworkCycleDataForUid>> mUidDataCallbacks =
	new LoaderManager.LoaderCallbacks<List<NetworkCycleDataForUid>>() {
	@Override
	public Loader<List<NetworkCycleDataForUid>> onCreateLoader(int id, Bundle args) {
	final NetworkCycleDataForUidLoader.Builder builder
	= NetworkCycleDataForUidLoader.builder(mContext);
	builder.setRetrieveDetail(true)
	.setNetworkTemplate(mTemplate);
	for (int i = 0; i < mAppItem.uids.size(); i++) {
	builder.addUid(mAppItem.uids.keyAt(i));
	}
	if (mCycles != null) {
	builder.setCycles(mCycles);
	}
	return builder.build();
	}

	@Override
	public void onLoadFinished(Loader<List<NetworkCycleDataForUid>> loader,
	List<NetworkCycleDataForUid> data) {
	mUsageData = data;
	mCycleAdapter.updateCycleList(data);
	if (mSelectedCycle > 0L) {
	final int numCycles = data.size();
	int position = 0;
	for (int i = 0; i < numCycles; i++) {
	final NetworkCycleDataForUid cycleData = data.get(i);
	if (cycleData.getEndTime() == mSelectedCycle) {
	position = i;
	break;
	}
	}
	if (position > 0) {
	mCycle.setSelection(position);
	}
	bindData(position);
	} else {
	bindData(0 /* position */);
	}
	mIsLoading = false;
	}

	@Override
	public void onLoaderReset(Loader<List<NetworkCycleDataForUid>> loader) {
	}
	};

	private final LoaderManager.LoaderCallbacks<ArraySet<Preference>> mAppPrefCallbacks =
	new LoaderManager.LoaderCallbacks<ArraySet<Preference>>() {
	@Override
	public Loader<ArraySet<Preference>> onCreateLoader(int i, Bundle bundle) {
	return new AppPrefLoader(getPrefContext(), mPackages, getPackageManager());
	}

	@Override
	public void onLoadFinished(Loader<ArraySet<Preference>> loader,
	ArraySet<Preference> preferences) {
	if (preferences != null && mAppList != null) {
	for (Preference preference : preferences) {
	mAppList.addPreference(preference);
	}
	}
	}

	@Override
	public void onLoaderReset(Loader<ArraySet<Preference>> loader) {
	}
	};

	@Override
	public void onDataSaverChanged(boolean isDataSaving) {

	}

	@Override
	public void onAllowlistStatusChanged(int uid, boolean isAllowlisted) {
	if (mAppItem.uids.get(uid, false)) {
	updatePrefs(getAppRestrictBackground(), isAllowlisted);
	}
	}

	@Override
	public void onDenylistStatusChanged(int uid, boolean isDenylisted) {
	if (mAppItem.uids.get(uid, false)) {
	updatePrefs(isDenylisted, getUnrestrictData());
	}
	}
	}