| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package android.support.v14.preference; |
| |
| import android.app.AlertDialog; |
| import android.content.DialogInterface; |
| import android.os.Bundle; |
| import android.support.v7.preference.ListPreference; |
| |
| public class ListPreferenceDialogFragment extends PreferenceDialogFragment { |
| |
| private int mClickedDialogEntryIndex; |
| |
| public static ListPreferenceDialogFragment newInstance(String key) { |
| final ListPreferenceDialogFragment fragment = new ListPreferenceDialogFragment(); |
| final Bundle b = new Bundle(1); |
| b.putString(ARG_KEY, key); |
| fragment.setArguments(b); |
| return fragment; |
| } |
| |
| private ListPreference getListPreference() { |
| return (ListPreference) getPreference(); |
| } |
| |
| @Override |
| protected void onPrepareDialogBuilder(AlertDialog.Builder builder) { |
| super.onPrepareDialogBuilder(builder); |
| |
| final ListPreference preference = getListPreference(); |
| |
| if (preference.getEntries() == null || preference.getEntryValues() == null) { |
| throw new IllegalStateException( |
| "ListPreference requires an entries array and an entryValues array."); |
| } |
| |
| mClickedDialogEntryIndex = preference.findIndexOfValue(preference.getValue()); |
| builder.setSingleChoiceItems(preference.getEntries(), mClickedDialogEntryIndex, |
| new DialogInterface.OnClickListener() { |
| public void onClick(DialogInterface dialog, int which) { |
| mClickedDialogEntryIndex = which; |
| |
| /* |
| * Clicking on an item simulates the positive button |
| * click, and dismisses the dialog. |
| */ |
| ListPreferenceDialogFragment.this.onClick(dialog, |
| DialogInterface.BUTTON_POSITIVE); |
| dialog.dismiss(); |
| } |
| }); |
| |
| /* |
| * The typical interaction for list-based dialogs is to have |
| * click-on-an-item dismiss the dialog instead of the user having to |
| * press 'Ok'. |
| */ |
| builder.setPositiveButton(null, null); |
| } |
| |
| @Override |
| public void onDialogClosed(boolean positiveResult) { |
| final ListPreference preference = getListPreference(); |
| if (positiveResult && mClickedDialogEntryIndex >= 0 && |
| preference.getEntryValues() != null) { |
| String value = preference.getEntryValues()[mClickedDialogEntryIndex].toString(); |
| if (preference.callChangeListener(value)) { |
| preference.setValue(value); |
| } |
| } |
| } |
| |
| } |