src/com/android/settings/DeviceAdminSettings.java - platform/packages/apps/Settings - Git at Google

 /*
  * Copyright (C) 2010 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;

 import android.app.Activity;
 import android.app.AppGlobals;
 import android.app.ListFragment;
 import android.app.admin.DeviceAdminInfo;
 import android.app.admin.DeviceAdminReceiver;
 import android.app.admin.DevicePolicyManager;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.pm.ActivityInfo;
 import android.content.pm.IPackageManager;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.content.res.Resources;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.os.RemoteException;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.util.Log;
 import android.util.SparseArray;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.BaseAdapter;
 import android.widget.ImageView;
 import android.widget.ListView;
 import android.widget.Switch;
 import android.widget.TextView;

 import com.android.internal.logging.nano.MetricsProto;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settingslib.core.instrumentation.Instrumentable;
 import com.android.settingslib.core.instrumentation.VisibilityLoggerMixin;

 import org.xmlpull.v1.XmlPullParserException;

 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.List;

 public class DeviceAdminSettings extends ListFragment implements Instrumentable {
     static final String TAG = "DeviceAdminSettings";

     private VisibilityLoggerMixin mVisibilityLoggerMixin;
     private DevicePolicyManager mDPM;
     private UserManager mUm;

     private static class DeviceAdminListItem implements Comparable<DeviceAdminListItem> {
         public DeviceAdminInfo info;

         // These aren't updated so they keep a stable sort order if user activates / de-activates
         // an admin.
         public String name;
         public boolean active;

         public int compareTo(DeviceAdminListItem other)  {
             // Sort active admins first, then by name.
             if (this.active != other.active) {
                 return this.active ? -1 : 1;
             }
             return this.name.compareTo(other.name);
         }
     }

     /**
      * Internal collection of device admin info objects for all profiles associated with the current
      * user.
      */
     private final ArrayList<DeviceAdminListItem>
             mAdmins = new ArrayList<DeviceAdminListItem>();

     private String mDeviceOwnerPkg;
     private SparseArray<ComponentName> mProfileOwnerComponents = new SparseArray<ComponentName>();

     private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             // Refresh the list, if state change has been received. It could be that checkboxes
             // need to be updated
             if (DevicePolicyManager.ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED.equals(
                     intent.getAction())) {
                 updateList();
             }
         }
     };

     @Override
     public int getMetricsCategory() {
         return MetricsProto.MetricsEvent.DEVICE_ADMIN_SETTINGS;
     }

     @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
         mVisibilityLoggerMixin = new VisibilityLoggerMixin(getMetricsCategory(),
                 FeatureFactory.getFactory(getContext()).getMetricsFeatureProvider());
     }

     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
             Bundle savedInstanceState) {
         mDPM = (DevicePolicyManager) getActivity().getSystemService(Context.DEVICE_POLICY_SERVICE);
         mUm = (UserManager) getActivity().getSystemService(Context.USER_SERVICE);
         return inflater.inflate(R.layout.device_admin_settings, container, false);
     }

     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
         setHasOptionsMenu(true);
         Utils.forceCustomPadding(getListView(), true /* additive padding */);
         getActivity().setTitle(R.string.manage_device_admin);
     }

     @Override
     public void onResume() {
         super.onResume();
         final Activity activity = getActivity();
         mVisibilityLoggerMixin.onResume();
         IntentFilter filter = new IntentFilter();
         filter.addAction(DevicePolicyManager.ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED);
         activity.registerReceiverAsUser(
                 mBroadcastReceiver, UserHandle.ALL, filter, null, null);

         final ComponentName deviceOwnerComponent = mDPM.getDeviceOwnerComponentOnAnyUser();
         mDeviceOwnerPkg =
                 deviceOwnerComponent != null ? deviceOwnerComponent.getPackageName() : null;
         mProfileOwnerComponents.clear();
         final List<UserHandle> profiles = mUm.getUserProfiles();
         final int profilesSize = profiles.size();
         for (int i = 0; i < profilesSize; ++i) {
             final int profileId = profiles.get(i).getIdentifier();
             mProfileOwnerComponents.put(profileId, mDPM.getProfileOwnerAsUser(profileId));
         }
         updateList();
     }

     @Override
     public void onPause() {
         final Activity activity = getActivity();
         activity.unregisterReceiver(mBroadcastReceiver);
         mVisibilityLoggerMixin.onPause();
         super.onPause();
     }

     /**
      * Update the internal collection of available admins for all profiles associated with the
      * current user.
      */
     void updateList() {
         mAdmins.clear();

         final List<UserHandle> profiles = mUm.getUserProfiles();
         final int profilesSize = profiles.size();
         for (int i = 0; i < profilesSize; ++i) {
             final int profileId = profiles.get(i).getIdentifier();
             updateAvailableAdminsForProfile(profileId);
         }
         Collections.sort(mAdmins);

         getListView().setAdapter(new PolicyListAdapter());
     }

     @Override
     public void onListItemClick(ListView l, View v, int position, long id) {
         Object o = l.getAdapter().getItem(position);
         DeviceAdminInfo dpi = (DeviceAdminInfo) o;
         final UserHandle user = new UserHandle(getUserId(dpi));
         final Activity activity = getActivity();
         Intent intent = new Intent(activity, DeviceAdminAdd.class);
         intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, dpi.getComponent());
         activity.startActivityAsUser(intent, user);
     }

     static class ViewHolder {
         ImageView icon;
         TextView name;
         Switch checkbox;
         TextView description;
     }

     class PolicyListAdapter extends BaseAdapter {
         final LayoutInflater mInflater;

         PolicyListAdapter() {
             mInflater = (LayoutInflater)
                     getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
         }

         @Override
         public boolean hasStableIds() {
             return false;
         }

         @Override
         public int getCount() {
             return mAdmins.size();
         }

         /**
          * The item for the given position in the list.
          *
          * @return DeviceAdminInfo object for actual device admins.
          */
         @Override
         public Object getItem(int position) {
             return ((DeviceAdminListItem) (mAdmins.get(position))).info;
         }

         @Override
         public long getItemId(int position) {
             return position;
         }

         @Override
         public boolean areAllItemsEnabled() {
             return false;
         }

         /**
          * See {@link #getItemViewType} for the view types.
          */
         @Override
         public int getViewTypeCount() {
             return 1;
         }

         /**
          * Returns 0 for all types.
          */
         @Override
         public int getItemViewType(int position) {
             return 0;
         }

         @Override
         public boolean isEnabled(int position) {
             Object o = getItem(position);
             return isEnabled(o);
         }

         private boolean isEnabled(Object o) {
             DeviceAdminInfo info = (DeviceAdminInfo) o;
             // Disable item if admin is being removed
             if (isRemovingAdmin(info)) {
                 return false;
             }
             return true;
         }

         @Override
         public View getView(int position, View convertView, ViewGroup parent) {
             Object o = getItem(position);
             if (convertView == null) {
                 convertView = newDeviceAdminView(parent);
             }
             bindView(convertView, (DeviceAdminInfo) o);
             return convertView;
         }

         private View newDeviceAdminView(ViewGroup parent) {
             View v = mInflater.inflate(R.layout.device_admin_item, parent, false);
             ViewHolder h = new ViewHolder();
             h.icon = v.findViewById(R.id.icon);
             h.name = v.findViewById(R.id.name);
             h.checkbox =  v.findViewById(R.id.checkbox);
             h.description = v.findViewById(R.id.description);
             v.setTag(h);
             return v;
         }

         private void bindView(View view, DeviceAdminInfo item) {
             final Activity activity = getActivity();
             ViewHolder vh = (ViewHolder) view.getTag();
             Drawable activityIcon = item.loadIcon(activity.getPackageManager());
             Drawable badgedIcon = activity.getPackageManager().getUserBadgedIcon(
                     activityIcon, new UserHandle(getUserId(item)));
             vh.icon.setImageDrawable(badgedIcon);
             vh.name.setText(item.loadLabel(activity.getPackageManager()));
             vh.checkbox.setChecked(isActiveAdmin(item));
             final boolean enabled = isEnabled(item);
             try {
                 vh.description.setText(item.loadDescription(activity.getPackageManager()));
             } catch (Resources.NotFoundException e) {
             }
             vh.checkbox.setEnabled(enabled);
             vh.name.setEnabled(enabled);
             vh.description.setEnabled(enabled);
             vh.icon.setEnabled(enabled);
         }
     }

     private boolean isDeviceOwner(DeviceAdminInfo item) {
         return getUserId(item) == UserHandle.myUserId()
                 && item.getPackageName().equals(mDeviceOwnerPkg);
     }

     private boolean isProfileOwner(DeviceAdminInfo item) {
         ComponentName profileOwner = mProfileOwnerComponents.get(getUserId(item));
         return item.getComponent().equals(profileOwner);
     }

     private boolean isActiveAdmin(DeviceAdminInfo item) {
         return mDPM.isAdminActiveAsUser(item.getComponent(), getUserId(item));
     }

     private boolean isRemovingAdmin(DeviceAdminInfo item) {
         return mDPM.isRemovingAdmin(item.getComponent(), getUserId(item));
     }

     /**
      * Add device admins to the internal collection that belong to a profile.
      *
      * @param profileId the profile identifier.
      */
     private void updateAvailableAdminsForProfile(final int profileId) {
         // We are adding the union of two sets 'A' and 'B' of device admins to mAvailableAdmins.
         // Set 'A' is the set of active admins for the profile whereas set 'B' is the set of
         // listeners to DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED for the profile.

         // Add all of set 'A' to mAvailableAdmins.
         List<ComponentName> activeAdminsListForProfile = mDPM.getActiveAdminsAsUser(profileId);
         addActiveAdminsForProfile(activeAdminsListForProfile, profileId);

         // Collect set 'B' and add B-A to mAvailableAdmins.
         addDeviceAdminBroadcastReceiversForProfile(activeAdminsListForProfile, profileId);
     }

     /**
      * Add a profile's device admins that are receivers of
      * {@code DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED} to the internal collection if they
      * haven't been added yet.
      *
      * @param alreadyAddedComponents the set of active admin component names. Receivers of
      *            {@code DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED} whose component is in this
      *            set are not added to the internal collection again.
      * @param profileId the identifier of the profile
      */
     private void addDeviceAdminBroadcastReceiversForProfile(
             Collection<ComponentName> alreadyAddedComponents, final int profileId) {
         final PackageManager pm = getActivity().getPackageManager();
         List<ResolveInfo> enabledForProfile = pm.queryBroadcastReceiversAsUser(
                 new Intent(DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED),
                 PackageManager.GET_META_DATA | PackageManager.GET_DISABLED_UNTIL_USED_COMPONENTS,
                 profileId);
         if (enabledForProfile == null) {
             enabledForProfile = Collections.emptyList();
         }
         final int n = enabledForProfile.size();
         for (int i = 0; i < n; ++i) {
             ResolveInfo resolveInfo = enabledForProfile.get(i);
             ComponentName riComponentName =
                     new ComponentName(resolveInfo.activityInfo.packageName,
                             resolveInfo.activityInfo.name);
             if (alreadyAddedComponents == null
                     || !alreadyAddedComponents.contains(riComponentName)) {
                 DeviceAdminInfo deviceAdminInfo =  createDeviceAdminInfo(resolveInfo.activityInfo);
                 // add only visible ones (note: active admins are added regardless of visibility)
                 if (deviceAdminInfo != null && deviceAdminInfo.isVisible()) {
                     if (!deviceAdminInfo.getActivityInfo().applicationInfo.isInternal()) {
                         continue;
                     }
                     DeviceAdminListItem item = new DeviceAdminListItem();
                     item.info = deviceAdminInfo;
                     item.name = deviceAdminInfo.loadLabel(pm).toString();
                     // Active ones already added.
                     item.active = false;
                     mAdmins.add(item);
                 }
             }
         }
     }

     /**
      * Add a {@link DeviceAdminInfo} object to the internal collection of available admins for all
      * active admin components associated with a profile.
      *
      * @param profileId a profile identifier.
      */
     private void addActiveAdminsForProfile(final List<ComponentName> activeAdmins,
             final int profileId) {
         if (activeAdmins != null) {
             final PackageManager packageManager = getActivity().getPackageManager();
             final IPackageManager iPackageManager = AppGlobals.getPackageManager();
             final int n = activeAdmins.size();
             for (int i = 0; i < n; ++i) {
                 final ComponentName activeAdmin = activeAdmins.get(i);
                 final ActivityInfo ai;
                 try {
                     ai = iPackageManager.getReceiverInfo(activeAdmin,
                             PackageManager.GET_META_DATA |
                             PackageManager.GET_DISABLED_UNTIL_USED_COMPONENTS |
                             PackageManager.MATCH_DIRECT_BOOT_UNAWARE |
                             PackageManager.MATCH_DIRECT_BOOT_AWARE, profileId);
                 } catch (RemoteException e) {
                     Log.w(TAG, "Unable to load component: " + activeAdmin);
                     continue;
                 }
                 final DeviceAdminInfo deviceAdminInfo = createDeviceAdminInfo(ai);
                 if (deviceAdminInfo == null) {
                     continue;
                 }
                 // Don't do the applicationInfo.isInternal() check here; if an active
                 // admin is already on SD card, just show it.
                 final DeviceAdminListItem item = new DeviceAdminListItem();
                 item.info = deviceAdminInfo;
                 item.name = deviceAdminInfo.loadLabel(packageManager).toString();
                 item.active = true;
                 mAdmins.add(item);
             }
         }
     }

     /**
      * Creates a device admin info object for the resolved intent that points to the component of
      * the device admin.
      *
      * @param ai ActivityInfo for the admin component.
      * @return new {@link DeviceAdminInfo} object or null if there was an error.
      */
     private DeviceAdminInfo createDeviceAdminInfo(ActivityInfo ai) {
         try {
             return new DeviceAdminInfo(getActivity(), ai);
         } catch (XmlPullParserException|IOException e) {
             Log.w(TAG, "Skipping " + ai, e);
         }
         return null;
     }

     /**
      * Extracts the user id from a device admin info object.
      * @param adminInfo the device administrator info.
      * @return identifier of the user associated with the device admin.
      */
     private int getUserId(DeviceAdminInfo adminInfo) {
         return UserHandle.getUserId(adminInfo.getActivityInfo().applicationInfo.uid);
     }
 }
	/*
	* Copyright (C) 2010 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;

	import android.app.Activity;
	import android.app.AppGlobals;
	import android.app.ListFragment;
	import android.app.admin.DeviceAdminInfo;
	import android.app.admin.DeviceAdminReceiver;
	import android.app.admin.DevicePolicyManager;
	import android.content.BroadcastReceiver;
	import android.content.ComponentName;
	import android.content.Context;
	import android.content.Intent;
	import android.content.IntentFilter;
	import android.content.pm.ActivityInfo;
	import android.content.pm.IPackageManager;
	import android.content.pm.PackageManager;
	import android.content.pm.ResolveInfo;
	import android.content.res.Resources;
	import android.graphics.drawable.Drawable;
	import android.os.Bundle;
	import android.os.RemoteException;
	import android.os.UserHandle;
	import android.os.UserManager;
	import android.util.Log;
	import android.util.SparseArray;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.view.ViewGroup;
	import android.widget.BaseAdapter;
	import android.widget.ImageView;
	import android.widget.ListView;
	import android.widget.Switch;
	import android.widget.TextView;

	import com.android.internal.logging.nano.MetricsProto;
	import com.android.settings.overlay.FeatureFactory;
	import com.android.settingslib.core.instrumentation.Instrumentable;
	import com.android.settingslib.core.instrumentation.VisibilityLoggerMixin;

	import org.xmlpull.v1.XmlPullParserException;

	import java.io.IOException;
	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.Collections;
	import java.util.List;

	public class DeviceAdminSettings extends ListFragment implements Instrumentable {
	static final String TAG = "DeviceAdminSettings";

	private VisibilityLoggerMixin mVisibilityLoggerMixin;
	private DevicePolicyManager mDPM;
	private UserManager mUm;

	private static class DeviceAdminListItem implements Comparable<DeviceAdminListItem> {
	public DeviceAdminInfo info;

	// These aren't updated so they keep a stable sort order if user activates / de-activates
	// an admin.
	public String name;
	public boolean active;

	public int compareTo(DeviceAdminListItem other) {
	// Sort active admins first, then by name.
	if (this.active != other.active) {
	return this.active ? -1 : 1;
	}
	return this.name.compareTo(other.name);
	}
	}

	/**
	* Internal collection of device admin info objects for all profiles associated with the current
	* user.
	*/
	private final ArrayList<DeviceAdminListItem>
	mAdmins = new ArrayList<DeviceAdminListItem>();

	private String mDeviceOwnerPkg;
	private SparseArray<ComponentName> mProfileOwnerComponents = new SparseArray<ComponentName>();

	private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	// Refresh the list, if state change has been received. It could be that checkboxes
	// need to be updated
	if (DevicePolicyManager.ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED.equals(
	intent.getAction())) {
	updateList();
	}
	}
	};

	@Override
	public int getMetricsCategory() {
	return MetricsProto.MetricsEvent.DEVICE_ADMIN_SETTINGS;
	}

	@Override
	public void onCreate(Bundle icicle) {
	super.onCreate(icicle);
	mVisibilityLoggerMixin = new VisibilityLoggerMixin(getMetricsCategory(),
	FeatureFactory.getFactory(getContext()).getMetricsFeatureProvider());
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
	Bundle savedInstanceState) {
	mDPM = (DevicePolicyManager) getActivity().getSystemService(Context.DEVICE_POLICY_SERVICE);
	mUm = (UserManager) getActivity().getSystemService(Context.USER_SERVICE);
	return inflater.inflate(R.layout.device_admin_settings, container, false);
	}

	@Override
	public void onActivityCreated(Bundle savedInstanceState) {
	super.onActivityCreated(savedInstanceState);
	setHasOptionsMenu(true);
	Utils.forceCustomPadding(getListView(), true /* additive padding */);
	getActivity().setTitle(R.string.manage_device_admin);
	}

	@Override
	public void onResume() {
	super.onResume();
	final Activity activity = getActivity();
	mVisibilityLoggerMixin.onResume();
	IntentFilter filter = new IntentFilter();
	filter.addAction(DevicePolicyManager.ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED);
	activity.registerReceiverAsUser(
	mBroadcastReceiver, UserHandle.ALL, filter, null, null);

	final ComponentName deviceOwnerComponent = mDPM.getDeviceOwnerComponentOnAnyUser();
	mDeviceOwnerPkg =
	deviceOwnerComponent != null ? deviceOwnerComponent.getPackageName() : null;
	mProfileOwnerComponents.clear();
	final List<UserHandle> profiles = mUm.getUserProfiles();
	final int profilesSize = profiles.size();
	for (int i = 0; i < profilesSize; ++i) {
	final int profileId = profiles.get(i).getIdentifier();
	mProfileOwnerComponents.put(profileId, mDPM.getProfileOwnerAsUser(profileId));
	}
	updateList();
	}

	@Override
	public void onPause() {
	final Activity activity = getActivity();
	activity.unregisterReceiver(mBroadcastReceiver);
	mVisibilityLoggerMixin.onPause();
	super.onPause();
	}

	/**
	* Update the internal collection of available admins for all profiles associated with the
	* current user.
	*/
	void updateList() {
	mAdmins.clear();

	final List<UserHandle> profiles = mUm.getUserProfiles();
	final int profilesSize = profiles.size();
	for (int i = 0; i < profilesSize; ++i) {
	final int profileId = profiles.get(i).getIdentifier();
	updateAvailableAdminsForProfile(profileId);
	}
	Collections.sort(mAdmins);

	getListView().setAdapter(new PolicyListAdapter());
	}

	@Override
	public void onListItemClick(ListView l, View v, int position, long id) {
	Object o = l.getAdapter().getItem(position);
	DeviceAdminInfo dpi = (DeviceAdminInfo) o;
	final UserHandle user = new UserHandle(getUserId(dpi));
	final Activity activity = getActivity();
	Intent intent = new Intent(activity, DeviceAdminAdd.class);
	intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, dpi.getComponent());
	activity.startActivityAsUser(intent, user);
	}

	static class ViewHolder {
	ImageView icon;
	TextView name;
	Switch checkbox;
	TextView description;
	}

	class PolicyListAdapter extends BaseAdapter {
	final LayoutInflater mInflater;

	PolicyListAdapter() {
	mInflater = (LayoutInflater)
	getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	}

	@Override
	public boolean hasStableIds() {
	return false;
	}

	@Override
	public int getCount() {
	return mAdmins.size();
	}

	/**
	* The item for the given position in the list.
	*
	* @return DeviceAdminInfo object for actual device admins.
	*/
	@Override
	public Object getItem(int position) {
	return ((DeviceAdminListItem) (mAdmins.get(position))).info;
	}

	@Override
	public long getItemId(int position) {
	return position;
	}

	@Override
	public boolean areAllItemsEnabled() {
	return false;
	}

	/**
	* See {@link #getItemViewType} for the view types.
	*/
	@Override
	public int getViewTypeCount() {
	return 1;
	}

	/**
	* Returns 0 for all types.
	*/
	@Override
	public int getItemViewType(int position) {
	return 0;
	}

	@Override
	public boolean isEnabled(int position) {
	Object o = getItem(position);
	return isEnabled(o);
	}

	private boolean isEnabled(Object o) {
	DeviceAdminInfo info = (DeviceAdminInfo) o;
	// Disable item if admin is being removed
	if (isRemovingAdmin(info)) {
	return false;
	}
	return true;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
	Object o = getItem(position);
	if (convertView == null) {
	convertView = newDeviceAdminView(parent);
	}
	bindView(convertView, (DeviceAdminInfo) o);
	return convertView;
	}

	private View newDeviceAdminView(ViewGroup parent) {
	View v = mInflater.inflate(R.layout.device_admin_item, parent, false);
	ViewHolder h = new ViewHolder();
	h.icon = v.findViewById(R.id.icon);
	h.name = v.findViewById(R.id.name);
	h.checkbox = v.findViewById(R.id.checkbox);
	h.description = v.findViewById(R.id.description);
	v.setTag(h);
	return v;
	}

	private void bindView(View view, DeviceAdminInfo item) {
	final Activity activity = getActivity();
	ViewHolder vh = (ViewHolder) view.getTag();
	Drawable activityIcon = item.loadIcon(activity.getPackageManager());
	Drawable badgedIcon = activity.getPackageManager().getUserBadgedIcon(
	activityIcon, new UserHandle(getUserId(item)));
	vh.icon.setImageDrawable(badgedIcon);
	vh.name.setText(item.loadLabel(activity.getPackageManager()));
	vh.checkbox.setChecked(isActiveAdmin(item));
	final boolean enabled = isEnabled(item);
	try {
	vh.description.setText(item.loadDescription(activity.getPackageManager()));
	} catch (Resources.NotFoundException e) {
	}
	vh.checkbox.setEnabled(enabled);
	vh.name.setEnabled(enabled);
	vh.description.setEnabled(enabled);
	vh.icon.setEnabled(enabled);
	}
	}

	private boolean isDeviceOwner(DeviceAdminInfo item) {
	return getUserId(item) == UserHandle.myUserId()
	&& item.getPackageName().equals(mDeviceOwnerPkg);
	}

	private boolean isProfileOwner(DeviceAdminInfo item) {
	ComponentName profileOwner = mProfileOwnerComponents.get(getUserId(item));
	return item.getComponent().equals(profileOwner);
	}

	private boolean isActiveAdmin(DeviceAdminInfo item) {
	return mDPM.isAdminActiveAsUser(item.getComponent(), getUserId(item));
	}

	private boolean isRemovingAdmin(DeviceAdminInfo item) {
	return mDPM.isRemovingAdmin(item.getComponent(), getUserId(item));
	}

	/**
	* Add device admins to the internal collection that belong to a profile.
	*
	* @param profileId the profile identifier.
	*/
	private void updateAvailableAdminsForProfile(final int profileId) {
	// We are adding the union of two sets 'A' and 'B' of device admins to mAvailableAdmins.
	// Set 'A' is the set of active admins for the profile whereas set 'B' is the set of
	// listeners to DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED for the profile.

	// Add all of set 'A' to mAvailableAdmins.
	List<ComponentName> activeAdminsListForProfile = mDPM.getActiveAdminsAsUser(profileId);
	addActiveAdminsForProfile(activeAdminsListForProfile, profileId);

	// Collect set 'B' and add B-A to mAvailableAdmins.
	addDeviceAdminBroadcastReceiversForProfile(activeAdminsListForProfile, profileId);
	}

	/**
	* Add a profile's device admins that are receivers of
	* {@code DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED} to the internal collection if they
	* haven't been added yet.
	*
	* @param alreadyAddedComponents the set of active admin component names. Receivers of
	* {@code DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED} whose component is in this
	* set are not added to the internal collection again.
	* @param profileId the identifier of the profile
	*/
	private void addDeviceAdminBroadcastReceiversForProfile(
	Collection<ComponentName> alreadyAddedComponents, final int profileId) {
	final PackageManager pm = getActivity().getPackageManager();
	List<ResolveInfo> enabledForProfile = pm.queryBroadcastReceiversAsUser(
	new Intent(DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED),
	PackageManager.GET_META_DATA \| PackageManager.GET_DISABLED_UNTIL_USED_COMPONENTS,
	profileId);
	if (enabledForProfile == null) {
	enabledForProfile = Collections.emptyList();
	}
	final int n = enabledForProfile.size();
	for (int i = 0; i < n; ++i) {
	ResolveInfo resolveInfo = enabledForProfile.get(i);
	ComponentName riComponentName =
	new ComponentName(resolveInfo.activityInfo.packageName,
	resolveInfo.activityInfo.name);
	if (alreadyAddedComponents == null
	\|\| !alreadyAddedComponents.contains(riComponentName)) {
	DeviceAdminInfo deviceAdminInfo = createDeviceAdminInfo(resolveInfo.activityInfo);
	// add only visible ones (note: active admins are added regardless of visibility)
	if (deviceAdminInfo != null && deviceAdminInfo.isVisible()) {
	if (!deviceAdminInfo.getActivityInfo().applicationInfo.isInternal()) {
	continue;
	}
	DeviceAdminListItem item = new DeviceAdminListItem();
	item.info = deviceAdminInfo;
	item.name = deviceAdminInfo.loadLabel(pm).toString();
	// Active ones already added.
	item.active = false;
	mAdmins.add(item);
	}
	}
	}
	}

	/**
	* Add a {@link DeviceAdminInfo} object to the internal collection of available admins for all
	* active admin components associated with a profile.
	*
	* @param profileId a profile identifier.
	*/
	private void addActiveAdminsForProfile(final List<ComponentName> activeAdmins,
	final int profileId) {
	if (activeAdmins != null) {
	final PackageManager packageManager = getActivity().getPackageManager();
	final IPackageManager iPackageManager = AppGlobals.getPackageManager();
	final int n = activeAdmins.size();
	for (int i = 0; i < n; ++i) {
	final ComponentName activeAdmin = activeAdmins.get(i);
	final ActivityInfo ai;
	try {
	ai = iPackageManager.getReceiverInfo(activeAdmin,
	PackageManager.GET_META_DATA \|
	PackageManager.GET_DISABLED_UNTIL_USED_COMPONENTS \|
	PackageManager.MATCH_DIRECT_BOOT_UNAWARE \|
	PackageManager.MATCH_DIRECT_BOOT_AWARE, profileId);
	} catch (RemoteException e) {
	Log.w(TAG, "Unable to load component: " + activeAdmin);
	continue;
	}
	final DeviceAdminInfo deviceAdminInfo = createDeviceAdminInfo(ai);
	if (deviceAdminInfo == null) {
	continue;
	}
	// Don't do the applicationInfo.isInternal() check here; if an active
	// admin is already on SD card, just show it.
	final DeviceAdminListItem item = new DeviceAdminListItem();
	item.info = deviceAdminInfo;
	item.name = deviceAdminInfo.loadLabel(packageManager).toString();
	item.active = true;
	mAdmins.add(item);
	}
	}
	}

	/**
	* Creates a device admin info object for the resolved intent that points to the component of
	* the device admin.
	*
	* @param ai ActivityInfo for the admin component.
	* @return new {@link DeviceAdminInfo} object or null if there was an error.
	*/
	private DeviceAdminInfo createDeviceAdminInfo(ActivityInfo ai) {
	try {
	return new DeviceAdminInfo(getActivity(), ai);
	} catch (XmlPullParserException\|IOException e) {
	Log.w(TAG, "Skipping " + ai, e);
	}
	return null;
	}

	/**
	* Extracts the user id from a device admin info object.
	* @param adminInfo the device administrator info.
	* @return identifier of the user associated with the device admin.
	*/
	private int getUserId(DeviceAdminInfo adminInfo) {
	return UserHandle.getUserId(adminInfo.getActivityInfo().applicationInfo.uid);
	}
	}