+ private void disableUnusableTimeouts(ListPreference screenTimeoutPreference) {
+ DevicePolicyManager dpm =
+ (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
+ long maxTimeout = dpm != null ? dpm.getMaximumTimeToLock(null) : 0;
+ if (maxTimeout == 0) {
+ return; // policy not enforced
+ }
+ final CharSequence[] entries = screenTimeoutPreference.getEntries();
+ final CharSequence[] values = screenTimeoutPreference.getEntryValues();
+ ArrayList<CharSequence> revisedEntries = new ArrayList<CharSequence>();
+ ArrayList<CharSequence> revisedValues = new ArrayList<CharSequence>();
+ for (int i = 0; i < values.length; i++) {
+ long timeout = Long.valueOf(values[i].toString());
+ if (timeout <= maxTimeout) {
+ revisedEntries.add(entries[i]);
+ revisedValues.add(values[i]);
+ }
+ }
+ if (revisedEntries.size() != entries.length || revisedValues.size() != values.length) {
+ screenTimeoutPreference.setEntries(
+ revisedEntries.toArray(new CharSequence[revisedEntries.size()]));
+ screenTimeoutPreference.setEntryValues(
+ revisedValues.toArray(new CharSequence[revisedValues.size()]));
+ screenTimeoutPreference.setValue(String.valueOf(maxTimeout));
+ }
+ screenTimeoutPreference.setEnabled(revisedEntries.size() > 0);