2 * Copyright (C) 2007 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package com.android.settings;
20 import static android.provider.Settings.System.SCREEN_OFF_TIMEOUT;
22 import android.app.AlertDialog;
23 import android.app.admin.DevicePolicyManager;
24 import android.content.Context;
25 import android.content.DialogInterface;
26 import android.content.Intent;
27 import android.os.Bundle;
28 import android.os.Vibrator;
29 import android.preference.CheckBoxPreference;
30 import android.preference.ListPreference;
31 import android.preference.Preference;
32 import android.preference.Preference.OnPreferenceChangeListener;
33 import android.preference.PreferenceGroup;
34 import android.preference.PreferenceScreen;
35 import android.provider.Settings;
36 import android.security.KeyStore;
37 import android.telephony.TelephonyManager;
38 import android.util.Log;
40 import com.android.internal.telephony.Phone;
41 import com.android.internal.widget.LockPatternUtils;
43 import java.util.ArrayList;
46 * Gesture lock pattern settings.
48 public class SecuritySettings extends SettingsPreferenceFragment
49 implements OnPreferenceChangeListener, DialogInterface.OnClickListener {
52 private static final String KEY_UNLOCK_SET_OR_CHANGE = "unlock_set_or_change";
53 private static final String KEY_LOCK_ENABLED = "lockenabled";
54 private static final String KEY_VISIBLE_PATTERN = "visiblepattern";
55 private static final String KEY_TACTILE_FEEDBACK_ENABLED = "unlock_tactile_feedback";
56 private static final String KEY_SECURITY_CATEGORY = "security_category";
57 private static final String KEY_LOCK_AFTER_TIMEOUT = "lock_after_timeout";
58 private static final int SET_OR_CHANGE_LOCK_METHOD_REQUEST = 123;
61 private static final String KEY_SIM_LOCK = "sim_lock";
62 private static final String KEY_SHOW_PASSWORD = "show_password";
63 private static final String KEY_RESET_CREDENTIALS = "reset_credentials";
64 private static final String KEY_TOGGLE_INSTALL_APPLICATIONS = "toggle_install_applications";
66 DevicePolicyManager mDPM;
68 private ChooseLockSettingsHelper mChooseLockSettingsHelper;
69 private LockPatternUtils mLockPatternUtils;
70 private ListPreference mLockAfter;
72 private CheckBoxPreference mVisiblePattern;
73 private CheckBoxPreference mTactileFeedback;
75 private CheckBoxPreference mShowPassword;
77 private Preference mResetCredentials;
79 private CheckBoxPreference mToggleAppInstallation;
80 private DialogInterface mWarnInstallApps;
83 public void onCreate(Bundle savedInstanceState) {
84 super.onCreate(savedInstanceState);
86 mLockPatternUtils = new LockPatternUtils(getActivity());
88 mDPM = (DevicePolicyManager)getSystemService(Context.DEVICE_POLICY_SERVICE);
90 mChooseLockSettingsHelper = new ChooseLockSettingsHelper(getActivity());
93 private PreferenceScreen createPreferenceHierarchy() {
94 PreferenceScreen root = getPreferenceScreen();
98 addPreferencesFromResource(R.xml.security_settings);
99 root = getPreferenceScreen();
101 // Add options for lock/unlock screen
103 if (!mLockPatternUtils.isSecure()) {
104 if (mLockPatternUtils.isLockScreenDisabled()) {
105 resid = R.xml.security_settings_lockscreen;
107 resid = R.xml.security_settings_chooser;
109 } else if (mLockPatternUtils.usingBiometricWeak()) {
110 resid = R.xml.security_settings_biometric_weak;
112 switch (mLockPatternUtils.getKeyguardStoredPasswordQuality()) {
113 case DevicePolicyManager.PASSWORD_QUALITY_SOMETHING:
114 resid = R.xml.security_settings_pattern;
116 case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC:
117 resid = R.xml.security_settings_pin;
119 case DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC:
120 case DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC:
121 case DevicePolicyManager.PASSWORD_QUALITY_COMPLEX:
122 resid = R.xml.security_settings_password;
125 // TODO: enable facepass options
127 addPreferencesFromResource(resid);
130 // Add options for device encryption
131 DevicePolicyManager dpm =
132 (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
134 switch (dpm.getStorageEncryptionStatus()) {
135 case DevicePolicyManager.ENCRYPTION_STATUS_ACTIVE:
136 // The device is currently encrypted.
137 addPreferencesFromResource(R.xml.security_settings_encrypted);
139 case DevicePolicyManager.ENCRYPTION_STATUS_INACTIVE:
140 // This device supports encryption but isn't encrypted.
141 addPreferencesFromResource(R.xml.security_settings_unencrypted);
145 // lock after preference
146 mLockAfter = (ListPreference) root.findPreference(KEY_LOCK_AFTER_TIMEOUT);
147 if (mLockAfter != null) {
148 setupLockAfterPreference();
149 updateLockAfterPreferenceSummary();
153 mVisiblePattern = (CheckBoxPreference) root.findPreference(KEY_VISIBLE_PATTERN);
155 // tactile feedback. Should be common to all unlock preference screens.
156 mTactileFeedback = (CheckBoxPreference) root.findPreference(KEY_TACTILE_FEEDBACK_ENABLED);
157 if (!((Vibrator) getSystemService(Context.VIBRATOR_SERVICE)).hasVibrator()) {
158 PreferenceGroup securityCategory = (PreferenceGroup)
159 root.findPreference(KEY_SECURITY_CATEGORY);
160 if (securityCategory != null && mTactileFeedback != null) {
161 securityCategory.removePreference(mTactileFeedback);
165 // Append the rest of the settings
166 addPreferencesFromResource(R.xml.security_settings_misc);
168 // Do not display SIM lock for CDMA phone
169 TelephonyManager tm = TelephonyManager.getDefault();
170 if ((TelephonyManager.PHONE_TYPE_CDMA == tm.getCurrentPhoneType()) &&
171 (tm.getLteOnCdmaMode() != Phone.LTE_ON_CDMA_TRUE)) {
172 root.removePreference(root.findPreference(KEY_SIM_LOCK));
176 mShowPassword = (CheckBoxPreference) root.findPreference(KEY_SHOW_PASSWORD);
178 // Credential storage
179 mResetCredentials = root.findPreference(KEY_RESET_CREDENTIALS);
181 mToggleAppInstallation = (CheckBoxPreference) findPreference(
182 KEY_TOGGLE_INSTALL_APPLICATIONS);
183 mToggleAppInstallation.setChecked(isNonMarketAppsAllowed());
188 private boolean isNonMarketAppsAllowed() {
189 return Settings.Secure.getInt(getContentResolver(),
190 Settings.Secure.INSTALL_NON_MARKET_APPS, 0) > 0;
193 private void setNonMarketAppsAllowed(boolean enabled) {
194 // Change the system setting
195 Settings.Secure.putInt(getContentResolver(), Settings.Secure.INSTALL_NON_MARKET_APPS,
199 private void warnAppInstallation() {
200 // TODO: DialogFragment?
201 mWarnInstallApps = new AlertDialog.Builder(getActivity()).setTitle(
202 getResources().getString(R.string.error_title))
203 .setIcon(com.android.internal.R.drawable.ic_dialog_alert)
204 .setMessage(getResources().getString(R.string.install_all_warning))
205 .setPositiveButton(android.R.string.yes, this)
206 .setNegativeButton(android.R.string.no, null)
210 public void onClick(DialogInterface dialog, int which) {
211 if (dialog == mWarnInstallApps && which == DialogInterface.BUTTON_POSITIVE) {
212 setNonMarketAppsAllowed(true);
213 mToggleAppInstallation.setChecked(true);
218 public void onDestroy() {
220 if (mWarnInstallApps != null) {
221 mWarnInstallApps.dismiss();
225 private void setupLockAfterPreference() {
226 // Compatible with pre-Froyo
227 long currentTimeout = Settings.Secure.getLong(getContentResolver(),
228 Settings.Secure.LOCK_SCREEN_LOCK_AFTER_TIMEOUT, 5000);
229 mLockAfter.setValue(String.valueOf(currentTimeout));
230 mLockAfter.setOnPreferenceChangeListener(this);
231 final long adminTimeout = (mDPM != null ? mDPM.getMaximumTimeToLock(null) : 0);
232 final long displayTimeout = Math.max(0,
233 Settings.System.getInt(getContentResolver(), SCREEN_OFF_TIMEOUT, 0));
234 if (adminTimeout > 0) {
235 // This setting is a slave to display timeout when a device policy is enforced.
236 // As such, maxLockTimeout = adminTimeout - displayTimeout.
237 // If there isn't enough time, shows "immediately" setting.
238 disableUnusableTimeouts(Math.max(0, adminTimeout - displayTimeout));
242 private void updateLockAfterPreferenceSummary() {
243 // Update summary message with current value
244 long currentTimeout = Settings.Secure.getLong(getContentResolver(),
245 Settings.Secure.LOCK_SCREEN_LOCK_AFTER_TIMEOUT, 5000);
246 final CharSequence[] entries = mLockAfter.getEntries();
247 final CharSequence[] values = mLockAfter.getEntryValues();
249 for (int i = 0; i < values.length; i++) {
250 long timeout = Long.valueOf(values[i].toString());
251 if (currentTimeout >= timeout) {
255 mLockAfter.setSummary(getString(R.string.lock_after_timeout_summary, entries[best]));
258 private void disableUnusableTimeouts(long maxTimeout) {
259 final CharSequence[] entries = mLockAfter.getEntries();
260 final CharSequence[] values = mLockAfter.getEntryValues();
261 ArrayList<CharSequence> revisedEntries = new ArrayList<CharSequence>();
262 ArrayList<CharSequence> revisedValues = new ArrayList<CharSequence>();
263 for (int i = 0; i < values.length; i++) {
264 long timeout = Long.valueOf(values[i].toString());
265 if (timeout <= maxTimeout) {
266 revisedEntries.add(entries[i]);
267 revisedValues.add(values[i]);
270 if (revisedEntries.size() != entries.length || revisedValues.size() != values.length) {
271 mLockAfter.setEntries(
272 revisedEntries.toArray(new CharSequence[revisedEntries.size()]));
273 mLockAfter.setEntryValues(
274 revisedValues.toArray(new CharSequence[revisedValues.size()]));
275 final int userPreference = Integer.valueOf(mLockAfter.getValue());
276 if (userPreference <= maxTimeout) {
277 mLockAfter.setValue(String.valueOf(userPreference));
279 // There will be no highlighted selection since nothing in the list matches
280 // maxTimeout. The user can still select anything less than maxTimeout.
281 // TODO: maybe append maxTimeout to the list and mark selected.
284 mLockAfter.setEnabled(revisedEntries.size() > 0);
288 public void onResume() {
291 // Make sure we reload the preference hierarchy since some of these settings
292 // depend on others...
293 createPreferenceHierarchy();
295 final LockPatternUtils lockPatternUtils = mChooseLockSettingsHelper.utils();
296 if (mVisiblePattern != null) {
297 mVisiblePattern.setChecked(lockPatternUtils.isVisiblePatternEnabled());
299 if (mTactileFeedback != null) {
300 mTactileFeedback.setChecked(lockPatternUtils.isTactileFeedbackEnabled());
303 mShowPassword.setChecked(Settings.System.getInt(getContentResolver(),
304 Settings.System.TEXT_SHOW_PASSWORD, 1) != 0);
306 KeyStore.State state = KeyStore.getInstance().state();
307 mResetCredentials.setEnabled(state != KeyStore.State.UNINITIALIZED);
311 public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
312 final String key = preference.getKey();
314 final LockPatternUtils lockPatternUtils = mChooseLockSettingsHelper.utils();
315 if (KEY_UNLOCK_SET_OR_CHANGE.equals(key)) {
316 startFragment(this, "com.android.settings.ChooseLockGeneric$ChooseLockGenericFragment",
317 SET_OR_CHANGE_LOCK_METHOD_REQUEST, null);
318 } else if (KEY_LOCK_ENABLED.equals(key)) {
319 lockPatternUtils.setLockPatternEnabled(isToggled(preference));
320 } else if (KEY_VISIBLE_PATTERN.equals(key)) {
321 lockPatternUtils.setVisiblePatternEnabled(isToggled(preference));
322 } else if (KEY_TACTILE_FEEDBACK_ENABLED.equals(key)) {
323 lockPatternUtils.setTactileFeedbackEnabled(isToggled(preference));
324 } else if (preference == mShowPassword) {
325 Settings.System.putInt(getContentResolver(), Settings.System.TEXT_SHOW_PASSWORD,
326 mShowPassword.isChecked() ? 1 : 0);
327 } else if (preference == mToggleAppInstallation) {
328 if (mToggleAppInstallation.isChecked()) {
329 mToggleAppInstallation.setChecked(false);
330 warnAppInstallation();
332 setNonMarketAppsAllowed(false);
335 // If we didn't handle it, let preferences handle it.
336 return super.onPreferenceTreeClick(preferenceScreen, preference);
342 private boolean isToggled(Preference pref) {
343 return ((CheckBoxPreference) pref).isChecked();
347 * see confirmPatternThenDisableAndClear
350 public void onActivityResult(int requestCode, int resultCode, Intent data) {
351 super.onActivityResult(requestCode, resultCode, data);
352 mChooseLockSettingsHelper.utils().deleteTempGallery();
353 createPreferenceHierarchy();
356 public boolean onPreferenceChange(Preference preference, Object value) {
357 if (preference == mLockAfter) {
358 int timeout = Integer.parseInt((String) value);
360 Settings.Secure.putInt(getContentResolver(),
361 Settings.Secure.LOCK_SCREEN_LOCK_AFTER_TIMEOUT, timeout);
362 } catch (NumberFormatException e) {
363 Log.e("SecuritySettings", "could not persist lockAfter timeout setting", e);
365 updateLockAfterPreferenceSummary();