Home | History | Annotate | Download | only in applications 
      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.android.settings.applications;
     17 
     18 import android.app.AlertDialog;
     19 import android.app.AppOpsManager;
     20 import android.app.admin.DevicePolicyManager;
     21 import android.content.ActivityNotFoundException;
     22 import android.content.ComponentName;
     23 import android.content.Context;
     24 import android.content.Intent;
     25 import android.content.pm.PackageManager;
     26 import android.content.pm.ResolveInfo;
     27 import android.os.Bundle;
     28 import android.os.UserHandle;
     29 import android.preference.Preference;
     30 import android.preference.Preference.OnPreferenceChangeListener;
     31 import android.preference.Preference.OnPreferenceClickListener;
     32 import android.preference.SwitchPreference;
     33 import android.provider.Settings;
     34 import android.util.Log;
     35 
     36 import com.android.internal.logging.MetricsLogger;
     37 import com.android.settings.R;
     38 import com.android.settings.applications.AppStateUsageBridge.UsageState;
     39 
     40 public class UsageAccessDetails extends AppInfoWithHeader implements OnPreferenceChangeListener,
     41         OnPreferenceClickListener {
     42 
     43     private static final String KEY_APP_OPS_PREFERENCE_SCREEN = "app_ops_preference_screen";
     44     private static final String KEY_APP_OPS_SETTINGS_SWITCH = "app_ops_settings_switch";
     45     private static final String KEY_APP_OPS_SETTINGS_PREFS = "app_ops_settings_preference";
     46     private static final String KEY_APP_OPS_SETTINGS_DESC = "app_ops_settings_description";
     47 
     48     // Use a bridge to get the usage stats but don't initialize it to connect with all state.
     49     // TODO: Break out this functionality into its own class.
     50     private AppStateUsageBridge mUsageBridge;
     51     private AppOpsManager mAppOpsManager;
     52     private SwitchPreference mSwitchPref;
     53     private Preference mUsagePrefs;
     54     private Preference mUsageDesc;
     55     private Intent mSettingsIntent;
     56     private UsageState mUsageState;
     57     private DevicePolicyManager mDpm;
     58 
     59     @Override
     60     public void onCreate(Bundle savedInstanceState) {
     61         super.onCreate(savedInstanceState);
     62 
     63         Context context = getActivity();
     64         mUsageBridge = new AppStateUsageBridge(context, mState, null);
     65         mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
     66         mDpm = context.getSystemService(DevicePolicyManager.class);
     67 
     68         addPreferencesFromResource(R.xml.app_ops_permissions_details);
     69         mSwitchPref = (SwitchPreference) findPreference(KEY_APP_OPS_SETTINGS_SWITCH);
     70         mUsagePrefs = findPreference(KEY_APP_OPS_SETTINGS_PREFS);
     71         mUsageDesc = findPreference(KEY_APP_OPS_SETTINGS_DESC);
     72 
     73         getPreferenceScreen().setTitle(R.string.usage_access);
     74         mSwitchPref.setTitle(R.string.permit_usage_access);
     75         mUsagePrefs.setTitle(R.string.app_usage_preference);
     76         mUsageDesc.setSummary(R.string.usage_access_description);
     77 
     78         mSwitchPref.setOnPreferenceChangeListener(this);
     79         mUsagePrefs.setOnPreferenceClickListener(this);
     80 
     81         mSettingsIntent = new Intent(Intent.ACTION_MAIN)
     82                 .addCategory(Settings.INTENT_CATEGORY_USAGE_ACCESS_CONFIG)
     83                 .setPackage(mPackageName);
     84     }
     85 
     86     @Override
     87     public boolean onPreferenceClick(Preference preference) {
     88         if (preference == mUsagePrefs) {
     89             if (mSettingsIntent != null) {
     90                 try {
     91                     getActivity().startActivityAsUser(mSettingsIntent, new UserHandle(mUserId));
     92                 } catch (ActivityNotFoundException e) {
     93                     Log.w(TAG, "Unable to launch app usage access settings " + mSettingsIntent, e);
     94                 }
     95             }
     96             return true;
     97         }
     98         return false;
     99     }
    100 
    101     @Override
    102     public boolean onPreferenceChange(Preference preference, Object newValue) {
    103         if (preference == mSwitchPref) {
    104             if (mUsageState != null && (Boolean) newValue != mUsageState.isPermissible()) {
    105                 if (mUsageState.isPermissible() && mDpm.isProfileOwnerApp(mPackageName)) {
    106                     new AlertDialog.Builder(getContext())
    107                             .setIcon(com.android.internal.R.drawable.ic_dialog_alert_material)
    108                             .setTitle(android.R.string.dialog_alert_title)
    109                             .setMessage(R.string.work_profile_usage_access_warning)
    110                             .setPositiveButton(R.string.okay, null)
    111                             .show();
    112                 }
    113                 setHasAccess(!mUsageState.isPermissible());
    114                 refreshUi();
    115             }
    116             return true;
    117         }
    118         return false;
    119     }
    120 
    121     private void setHasAccess(boolean newState) {
    122         mAppOpsManager.setMode(AppOpsManager.OP_GET_USAGE_STATS, mPackageInfo.applicationInfo.uid,
    123                 mPackageName, newState ? AppOpsManager.MODE_ALLOWED : AppOpsManager.MODE_IGNORED);
    124     }
    125 
    126     @Override
    127     protected boolean refreshUi() {
    128         mUsageState = mUsageBridge.getUsageInfo(mPackageName,
    129                 mPackageInfo.applicationInfo.uid);
    130 
    131         boolean hasAccess = mUsageState.isPermissible();
    132         mSwitchPref.setChecked(hasAccess);
    133         mSwitchPref.setEnabled(mUsageState.permissionDeclared);
    134         mUsagePrefs.setEnabled(hasAccess);
    135 
    136         ResolveInfo resolveInfo = mPm.resolveActivityAsUser(mSettingsIntent,
    137                 PackageManager.GET_META_DATA, mUserId);
    138         if (resolveInfo != null) {
    139             if (findPreference(KEY_APP_OPS_SETTINGS_PREFS) == null) {
    140                 getPreferenceScreen().addPreference(mUsagePrefs);
    141             }
    142             Bundle metaData = resolveInfo.activityInfo.metaData;
    143             mSettingsIntent.setComponent(new ComponentName(resolveInfo.activityInfo.packageName,
    144                     resolveInfo.activityInfo.name));
    145             if (metaData != null
    146                     && metaData.containsKey(Settings.METADATA_USAGE_ACCESS_REASON)) {
    147                 mSwitchPref.setSummary(
    148                         metaData.getString(Settings.METADATA_USAGE_ACCESS_REASON));
    149             }
    150         } else {
    151             if (findPreference(KEY_APP_OPS_SETTINGS_PREFS) != null) {
    152                 getPreferenceScreen().removePreference(mUsagePrefs);
    153             }
    154         }
    155 
    156         return true;
    157     }
    158 
    159     @Override
    160     protected AlertDialog createDialog(int id, int errorCode) {
    161         return null;
    162     }
    163 
    164     @Override
    165     protected int getMetricsCategory() {
    166         return MetricsLogger.APPLICATIONS_USAGE_ACCESS_DETAIL;
    167     }
    168 
    169 }
    170