1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 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 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 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. 15 */ 16 17 package com.example.android.apis.preference; 18 19 import com.example.android.apis.R; 20 21 import android.os.Bundle; 22 import android.preference.PreferenceActivity; 23 import android.preference.PreferenceFragment; 24 import android.preference.PreferenceManager; 25 import android.util.Log; 26 import android.widget.Button; 27 28 import java.util.List; 29 30 /** 31 * Demonstration of PreferenceActivity to make a top-level preference 32 * panel with headers. 33 */ 34 //BEGIN_INCLUDE(activity) 35 public class PreferenceWithHeaders extends PreferenceActivity { 36 @Override 37 protected void onCreate(Bundle savedInstanceState) { 38 super.onCreate(savedInstanceState); 39 40 // Add a button to the header list. 41 if (hasHeaders()) { 42 Button button = new Button(this); 43 button.setText("Some action"); 44 setListFooter(button); 45 } 46 } 47 48 /** 49 * Populate the activity with the top-level headers. 50 */ 51 @Override 52 public void onBuildHeaders(List<Header> target) { 53 loadHeadersFromResource(R.xml.preference_headers, target); 54 } 55 56 /** 57 * This fragment shows the preferences for the first header. 58 */ 59 public static class Prefs1Fragment extends PreferenceFragment { 60 @Override 61 public void onCreate(Bundle savedInstanceState) { 62 super.onCreate(savedInstanceState); 63 64 // Make sure default values are applied. In a real app, you would 65 // want this in a shared function that is used to retrieve the 66 // SharedPreferences wherever they are needed. 67 PreferenceManager.setDefaultValues(getActivity(), 68 R.xml.advanced_preferences, false); 69 70 // Load the preferences from an XML resource 71 addPreferencesFromResource(R.xml.fragmented_preferences); 72 } 73 } 74 75 /** 76 * This fragment contains a second-level set of preference that you 77 * can get to by tapping an item in the first preferences fragment. 78 */ 79 public static class Prefs1FragmentInner extends PreferenceFragment { 80 @Override 81 public void onCreate(Bundle savedInstanceState) { 82 super.onCreate(savedInstanceState); 83 84 // Can retrieve arguments from preference XML. 85 Log.i("args", "Arguments: " + getArguments()); 86 87 // Load the preferences from an XML resource 88 addPreferencesFromResource(R.xml.fragmented_preferences_inner); 89 } 90 } 91 92 /** 93 * This fragment shows the preferences for the second header. 94 */ 95 public static class Prefs2Fragment extends PreferenceFragment { 96 @Override 97 public void onCreate(Bundle savedInstanceState) { 98 super.onCreate(savedInstanceState); 99 100 // Can retrieve arguments from headers XML. 101 Log.i("args", "Arguments: " + getArguments()); 102 103 // Load the preferences from an XML resource 104 addPreferencesFromResource(R.xml.preference_dependencies); 105 } 106 } 107 } 108 //END_INCLUDE(activity) 109
