| /* |
| * Copyright (C) 2014 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.sample; |
| |
| import android.app.Activity; |
| import android.content.Context; |
| import android.content.SharedPreferences; |
| import android.content.SharedPreferences.Editor; |
| import android.os.Bundle; |
| |
| import java.lang.Override; |
| |
| /** |
| * A simple activity for using the SharedPreferences API. |
| */ |
| public class SampleDeviceActivity extends Activity { |
| |
| private SharedPreferences mPreferences; |
| |
| @Override |
| public void onCreate(Bundle icicle) { |
| super.onCreate(icicle); |
| // Get a reference to this context's shared preference. |
| mPreferences = getPreferences(Context.MODE_PRIVATE); |
| } |
| |
| /** |
| * Saves the given key value pair to the shared preferences. |
| * |
| * @param key |
| * @param value |
| */ |
| public void savePreference(String key, String value) { |
| // Get an editor to modify the preferences. |
| Editor editor = mPreferences.edit(); |
| // Insert the key value pair. |
| editor.putString(key, value); |
| // Commit the changes - important. |
| editor.commit(); |
| } |
| |
| /** |
| * Looks up the given key in the shared preferences. |
| * |
| * @param key |
| * @return |
| */ |
| public String getPreference(String key) { |
| return mPreferences.getString(key, null); |
| } |
| |
| /** |
| * Deletes all entries in the shared preferences. |
| */ |
| public void clearPreferences() { |
| // Get an editor to modify the preferences. |
| Editor editor = mPreferences.edit(); |
| // Delete all entries. |
| editor.clear(); |
| // Commit the changes - important. |
| editor.commit(); |
| } |
| |
| } |