1 /* 2 * Copyright (C) 2014 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.security; 17 18 import android.app.admin.DevicePolicyManager; 19 import android.content.Context; 20 import android.content.Intent; 21 import android.os.Bundle; 22 import android.os.UserHandle; 23 import android.provider.SearchIndexableResource; 24 import android.provider.Settings; 25 import android.support.v14.preference.SwitchPreference; 26 import android.support.v7.preference.Preference; 27 import android.support.v7.preference.Preference.OnPreferenceChangeListener; 28 import android.support.v7.preference.PreferenceScreen; 29 import android.view.LayoutInflater; 30 import android.view.View; 31 import android.view.ViewGroup; 32 import android.widget.Switch; 33 34 import com.android.internal.logging.nano.MetricsProto.MetricsEvent; 35 import com.android.internal.widget.LockPatternUtils; 36 import com.android.settings.R; 37 import com.android.settings.SettingsActivity; 38 import com.android.settings.SettingsPreferenceFragment; 39 import com.android.settings.password.ChooseLockGeneric; 40 import com.android.settings.search.BaseSearchIndexProvider; 41 import com.android.settings.search.Indexable; 42 import com.android.settings.widget.SwitchBar; 43 44 import java.util.Arrays; 45 import java.util.List; 46 47 /** 48 * Screen pinning settings. 49 */ 50 public class ScreenPinningSettings extends SettingsPreferenceFragment 51 implements SwitchBar.OnSwitchChangeListener, Indexable { 52 53 private static final CharSequence KEY_USE_SCREEN_LOCK = "use_screen_lock"; 54 private static final int CHANGE_LOCK_METHOD_REQUEST = 43; 55 56 private SwitchBar mSwitchBar; 57 private SwitchPreference mUseScreenLock; 58 private LockPatternUtils mLockPatternUtils; 59 60 @Override 61 public int getMetricsCategory() { 62 return MetricsEvent.SCREEN_PINNING; 63 } 64 65 @Override 66 public void onActivityCreated(Bundle savedInstanceState) { 67 super.onActivityCreated(savedInstanceState); 68 69 final SettingsActivity activity = (SettingsActivity) getActivity(); 70 activity.setTitle(R.string.screen_pinning_title); 71 mLockPatternUtils = new LockPatternUtils(activity); 72 73 74 mSwitchBar = activity.getSwitchBar(); 75 mSwitchBar.addOnSwitchChangeListener(this); 76 mSwitchBar.show(); 77 mSwitchBar.setChecked(isLockToAppEnabled(getActivity())); 78 } 79 80 @Override 81 public int getHelpResource() { 82 return R.string.help_url_screen_pinning; 83 } 84 85 @Override 86 public void onViewCreated(View view, Bundle savedInstanceState) { 87 super.onViewCreated(view, savedInstanceState); 88 ViewGroup parent = (ViewGroup) view.findViewById(android.R.id.list_container); 89 View emptyView = LayoutInflater.from(getContext()) 90 .inflate(R.layout.screen_pinning_instructions, parent, false); 91 parent.addView(emptyView); 92 setEmptyView(emptyView); 93 } 94 95 @Override 96 public void onDestroyView() { 97 super.onDestroyView(); 98 99 mSwitchBar.removeOnSwitchChangeListener(this); 100 mSwitchBar.hide(); 101 } 102 103 private static boolean isLockToAppEnabled(Context context) { 104 return Settings.System.getInt(context.getContentResolver(), 105 Settings.System.LOCK_TO_APP_ENABLED, 0) != 0; 106 } 107 108 private void setLockToAppEnabled(boolean isEnabled) { 109 Settings.System.putInt(getContentResolver(), Settings.System.LOCK_TO_APP_ENABLED, 110 isEnabled ? 1 : 0); 111 if (isEnabled) { 112 // Set the value to match what we have defaulted to in the UI. 113 setScreenLockUsedSetting(isScreenLockUsed()); 114 } 115 } 116 117 private boolean isScreenLockUsed() { 118 int def = getCurrentSecurityTitle() != R.string.screen_pinning_unlock_none ? 1 : 0; 119 return Settings.Secure.getInt(getContentResolver(), 120 Settings.Secure.LOCK_TO_APP_EXIT_LOCKED, def) != 0; 121 } 122 123 private boolean setScreenLockUsed(boolean isEnabled) { 124 if (isEnabled) { 125 LockPatternUtils lockPatternUtils = new LockPatternUtils(getActivity()); 126 int passwordQuality = lockPatternUtils 127 .getKeyguardStoredPasswordQuality(UserHandle.myUserId()); 128 if (passwordQuality == DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED) { 129 Intent chooseLockIntent = new Intent(DevicePolicyManager.ACTION_SET_NEW_PASSWORD); 130 chooseLockIntent.putExtra( 131 ChooseLockGeneric.ChooseLockGenericFragment.MINIMUM_QUALITY_KEY, 132 DevicePolicyManager.PASSWORD_QUALITY_SOMETHING); 133 startActivityForResult(chooseLockIntent, CHANGE_LOCK_METHOD_REQUEST); 134 return false; 135 } 136 } 137 setScreenLockUsedSetting(isEnabled); 138 return true; 139 } 140 141 private void setScreenLockUsedSetting(boolean isEnabled) { 142 Settings.Secure.putInt(getContentResolver(), Settings.Secure.LOCK_TO_APP_EXIT_LOCKED, 143 isEnabled ? 1 : 0); 144 } 145 146 @Override 147 public void onActivityResult(int requestCode, int resultCode, Intent data) { 148 super.onActivityResult(requestCode, resultCode, data); 149 if (requestCode == CHANGE_LOCK_METHOD_REQUEST) { 150 LockPatternUtils lockPatternUtils = new LockPatternUtils(getActivity()); 151 boolean validPassQuality = lockPatternUtils.getKeyguardStoredPasswordQuality( 152 UserHandle.myUserId()) 153 != DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED; 154 setScreenLockUsed(validPassQuality); 155 // Make sure the screen updates. 156 mUseScreenLock.setChecked(validPassQuality); 157 } 158 } 159 160 private int getCurrentSecurityTitle() { 161 int quality = mLockPatternUtils.getKeyguardStoredPasswordQuality( 162 UserHandle.myUserId()); 163 switch (quality) { 164 case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC: 165 case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX: 166 return R.string.screen_pinning_unlock_pin; 167 case DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC: 168 case DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC: 169 case DevicePolicyManager.PASSWORD_QUALITY_COMPLEX: 170 case DevicePolicyManager.PASSWORD_QUALITY_MANAGED: 171 return R.string.screen_pinning_unlock_password; 172 case DevicePolicyManager.PASSWORD_QUALITY_SOMETHING: 173 if (mLockPatternUtils.isLockPatternEnabled(UserHandle.myUserId())) { 174 return R.string.screen_pinning_unlock_pattern; 175 } 176 } 177 return R.string.screen_pinning_unlock_none; 178 } 179 180 /** 181 * Listens to the state change of the lock-to-app master switch. 182 */ 183 @Override 184 public void onSwitchChanged(Switch switchView, boolean isChecked) { 185 setLockToAppEnabled(isChecked); 186 updateDisplay(); 187 } 188 189 public void updateDisplay() { 190 PreferenceScreen root = getPreferenceScreen(); 191 if (root != null) { 192 root.removeAll(); 193 } 194 if (isLockToAppEnabled(getActivity())) { 195 addPreferencesFromResource(R.xml.screen_pinning_settings); 196 root = getPreferenceScreen(); 197 198 mUseScreenLock = (SwitchPreference) root.findPreference(KEY_USE_SCREEN_LOCK); 199 mUseScreenLock.setOnPreferenceChangeListener(new OnPreferenceChangeListener() { 200 @Override 201 public boolean onPreferenceChange(Preference preference, Object newValue) { 202 return setScreenLockUsed((boolean) newValue); 203 } 204 }); 205 mUseScreenLock.setChecked(isScreenLockUsed()); 206 mUseScreenLock.setTitle(getCurrentSecurityTitle()); 207 } 208 } 209 210 /** 211 * For search 212 */ 213 public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER = 214 new BaseSearchIndexProvider() { 215 216 @Override 217 public List<SearchIndexableResource> getXmlResourcesToIndex(Context context, 218 boolean enabled) { 219 final SearchIndexableResource sir = new SearchIndexableResource(context); 220 sir.xmlResId = R.xml.screen_pinning_settings; 221 return Arrays.asList(sir); 222 } 223 }; 224 } 225
