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/*
* Copyright (C) 2007 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 com.example.android.apis.preference;
import com.example.android.apis.R;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.preference.PreferenceManager;
/**
* This activity is an example of a simple settings screen that has default
* values.
* <p>
* In order for the default values to be populated into the
* {@link SharedPreferences} (from the preferences XML file), the client must
* call
* {@link PreferenceManager#setDefaultValues(android.content.Context, int, boolean)}.
* <p>
* This should be called early, typically when the application is first created.
* An easy way to do this is to have a common function for retrieving the
* SharedPreferences that takes care of calling it.
*/
public class DefaultValues extends PreferenceActivity {
// This is the global (to the .apk) name under which we store these
// preferences. We want this to be unique from other preferences so that
// we do not have unexpected name conflicts, and the framework can correctly
// determine whether these preferences' defaults have already been written.
static final String PREFS_NAME = "defaults";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getPrefs(this);
getPreferenceManager().setSharedPreferencesName(PREFS_NAME);
addPreferencesFromResource(R.xml.default_values);
}
static SharedPreferences getPrefs(Context context) {
PreferenceManager.setDefaultValues(context, PREFS_NAME, MODE_PRIVATE,
R.xml.default_values, false);
return context.getSharedPreferences(PREFS_NAME, MODE_PRIVATE);
}
}
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