1 /* 2 * Copyright (C) 2013 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 17 package com.example.android.apprestrictions; 18 19 import android.app.Activity; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.content.RestrictionEntry; 23 import android.os.Bundle; 24 import android.os.UserManager; 25 import android.preference.CheckBoxPreference; 26 import android.preference.ListPreference; 27 import android.preference.MultiSelectListPreference; 28 import android.preference.Preference; 29 import android.preference.PreferenceFragment; 30 31 import java.util.ArrayList; 32 import java.util.HashSet; 33 import java.util.List; 34 import java.util.Set; 35 36 /** 37 * This fragment is included in {@code CustomRestrictionsActivity}. It demonstrates how an app 38 * can integrate its own custom app restriction settings with the restricted profile feature. 39 * 40 * This sample app maintains custom app restriction settings in shared preferences. Your app 41 * can use other methods to maintain the settings. When this activity is invoked 42 * (from Settings > Users > Restricted Profile), the shared preferences are used to initialize 43 * the custom configuration on the user interface. 44 * 45 * Three sample input types are shown: checkbox, single-choice, and multi-choice. When the 46 * settings are modified by the user, the corresponding restriction entries are saved in the 47 * platform. The saved restriction entries are retrievable when the app is launched under a 48 * restricted profile. 49 */ 50 public class CustomRestrictionsFragment extends PreferenceFragment 51 implements Preference.OnPreferenceChangeListener { 52 53 // Shared preference key for the boolean restriction. 54 private static final String KEY_BOOLEAN_PREF = "pref_boolean"; 55 // Shared preference key for the single-select restriction. 56 private static final String KEY_CHOICE_PREF = "pref_choice"; 57 // Shared preference key for the multi-select restriction. 58 private static final String KEY_MULTI_PREF = "pref_multi"; 59 60 61 private List<RestrictionEntry> mRestrictions; 62 private Bundle mRestrictionsBundle; 63 64 // Shared preferences for each of the sample input types. 65 private CheckBoxPreference mBooleanPref; 66 private ListPreference mChoicePref; 67 private MultiSelectListPreference mMultiPref; 68 69 // Restriction entries for each of the sample input types. 70 private RestrictionEntry mBooleanEntry; 71 private RestrictionEntry mChoiceEntry; 72 private RestrictionEntry mMultiEntry; 73 74 @Override 75 public void onCreate(Bundle savedInstanceState) { 76 super.onCreate(savedInstanceState); 77 addPreferencesFromResource(R.xml.custom_prefs); 78 79 // This sample app uses shared preferences to maintain app restriction settings. Your app 80 // can use other methods to maintain the settings. 81 mBooleanPref = (CheckBoxPreference) findPreference(KEY_BOOLEAN_PREF); 82 mChoicePref = (ListPreference) findPreference(KEY_CHOICE_PREF); 83 mMultiPref = (MultiSelectListPreference) findPreference(KEY_MULTI_PREF); 84 85 mBooleanPref.setOnPreferenceChangeListener(this); 86 mChoicePref.setOnPreferenceChangeListener(this); 87 mMultiPref.setOnPreferenceChangeListener(this); 88 89 setRetainInstance(true); 90 } 91 92 @Override 93 public void onActivityCreated(Bundle savedInstanceState) { 94 super.onActivityCreated(savedInstanceState); 95 final Activity activity = getActivity(); 96 98 // Existing app restriction settings, if exist, can be retrieved from the Bundle. 99 mRestrictionsBundle = 100 activity.getIntent().getBundleExtra(Intent.EXTRA_RESTRICTIONS_BUNDLE); 101 102 if (mRestrictionsBundle == null) { 103 mRestrictionsBundle = 104 ((UserManager) activity.getSystemService(Context.USER_SERVICE)) 105 .getApplicationRestrictions(activity.getPackageName()); 106 } 107 108 if (mRestrictionsBundle == null) { 109 mRestrictionsBundle = new Bundle(); 110 } 111 112 mRestrictions = activity.getIntent().getParcelableArrayListExtra( 113 Intent.EXTRA_RESTRICTIONS_LIST); 115 116 // Transfers the saved values into the preference hierarchy. 117 if (mRestrictions != null) { 118 for (RestrictionEntry entry : mRestrictions) { 119 if (entry.getKey().equals(GetRestrictionsReceiver.KEY_BOOLEAN)) { 120 mBooleanPref.setChecked(entry.getSelectedState()); 121 mBooleanEntry = entry; 122 } else if (entry.getKey().equals(GetRestrictionsReceiver.KEY_CHOICE)) { 123 mChoicePref.setValue(entry.getSelectedString()); 124 mChoiceEntry = entry; 125 } else if (entry.getKey().equals(GetRestrictionsReceiver.KEY_MULTI_SELECT)) { 126 HashSet<String> set = new HashSet<String>(); 127 for (String value : entry.getAllSelectedStrings()) { 128 set.add(value); 129 } 130 mMultiPref.setValues(set); 131 mMultiEntry = entry; 132 } 133 } 134 } else { 135 mRestrictions = new ArrayList<RestrictionEntry>(); 136 137 // Initializes the boolean restriction entry and updates its corresponding shared 138 // preference value. 139 mBooleanEntry = new RestrictionEntry(GetRestrictionsReceiver.KEY_BOOLEAN, 140 mRestrictionsBundle.getBoolean(GetRestrictionsReceiver.KEY_BOOLEAN, false)); 141 mBooleanEntry.setType(RestrictionEntry.TYPE_BOOLEAN); 142 mBooleanPref.setChecked(mBooleanEntry.getSelectedState()); 143 144 // Initializes the single choice restriction entry and updates its corresponding 145 // shared preference value. 146 mChoiceEntry = new RestrictionEntry(GetRestrictionsReceiver.KEY_CHOICE, 147 mRestrictionsBundle.getString(GetRestrictionsReceiver.KEY_CHOICE)); 148 mChoiceEntry.setType(RestrictionEntry.TYPE_CHOICE); 149 mChoicePref.setValue(mChoiceEntry.getSelectedString()); 150 151 // Initializes the multi-select restriction entry and updates its corresponding 152 // shared preference value. 153 mMultiEntry = new RestrictionEntry(GetRestrictionsReceiver.KEY_MULTI_SELECT, 154 mRestrictionsBundle.getStringArray( 155 GetRestrictionsReceiver.KEY_MULTI_SELECT)); 156 mMultiEntry.setType(RestrictionEntry.TYPE_MULTI_SELECT); 157 if (mMultiEntry.getAllSelectedStrings() != null) { 158 HashSet<String> set = new HashSet<String>(); 159 final String[] values = mRestrictionsBundle.getStringArray( 160 GetRestrictionsReceiver.KEY_MULTI_SELECT); 161 if (values != null) { 162 for (String value : values) { 163 set.add(value); 164 } 165 } 166 mMultiPref.setValues(set); 167 } 168 mRestrictions.add(mBooleanEntry); 169 mRestrictions.add(mChoiceEntry); 170 mRestrictions.add(mMultiEntry); 171 } 172 // Prepares result to be passed back to the Settings app when the custom restrictions 173 // activity finishes. 174 Intent intent = new Intent(getActivity().getIntent()); 175 intent.putParcelableArrayListExtra(Intent.EXTRA_RESTRICTIONS_LIST, 176 new ArrayList<RestrictionEntry>(mRestrictions)); 177 getActivity().setResult(Activity.RESULT_OK, intent); 178 } 179 180 @Override 181 public boolean onPreferenceChange(Preference preference, Object newValue) { 182 if (preference == mBooleanPref) { 183 mBooleanEntry.setSelectedState((Boolean) newValue); 184 } else if (preference == mChoicePref) { 185 mChoiceEntry.setSelectedString((String) newValue); 186 } else if (preference == mMultiPref) { 187 String[] selectedStrings = new String[((Set<String>)newValue).size()]; 188 int i = 0; 189 for (String value : (Set<String>) newValue) { 190 selectedStrings[i++] = value; 191 } 192 mMultiEntry.setAllSelectedStrings(selectedStrings); 193 } 194 195 // Saves all the app restriction configuration changes from the custom activity. 196 Intent intent = new Intent(getActivity().getIntent()); 197 intent.putParcelableArrayListExtra(Intent.EXTRA_RESTRICTIONS_LIST, 198 new ArrayList<RestrictionEntry>(mRestrictions)); 199 getActivity().setResult(Activity.RESULT_OK, intent); 200 return true; 201 } 202 }