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      1 /*
      2  * Copyright (C) 2007 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.content.Intent;
     22 import android.content.res.TypedArray;
     23 import android.net.Uri;
     24 import android.os.Bundle;
     25 import android.preference.CheckBoxPreference;
     26 import android.preference.EditTextPreference;
     27 import android.preference.ListPreference;
     28 import android.preference.PreferenceActivity;
     29 import android.preference.PreferenceCategory;
     30 import android.preference.PreferenceScreen;
     31 import android.preference.SwitchPreference;
     32 
     33 public class PreferencesFromCode extends PreferenceActivity {
     34 
     35     @Override
     36     protected void onCreate(Bundle savedInstanceState) {
     37         super.onCreate(savedInstanceState);
     38 
     39         setPreferenceScreen(createPreferenceHierarchy());
     40     }
     41 
     42     private PreferenceScreen createPreferenceHierarchy() {
     43         // Root
     44         PreferenceScreen root = getPreferenceManager().createPreferenceScreen(this);
     45 
     46         // Inline preferences
     47         PreferenceCategory inlinePrefCat = new PreferenceCategory(this);
     48         inlinePrefCat.setTitle(R.string.inline_preferences);
     49         root.addPreference(inlinePrefCat);
     50 
     51         // Checkbox preference
     52         CheckBoxPreference checkboxPref = new CheckBoxPreference(this);
     53         checkboxPref.setKey("checkbox_preference");
     54         checkboxPref.setTitle(R.string.title_checkbox_preference);
     55         checkboxPref.setSummary(R.string.summary_checkbox_preference);
     56         inlinePrefCat.addPreference(checkboxPref);
     57 
     58         // Switch preference
     59         SwitchPreference switchPref = new SwitchPreference(this);
     60         switchPref.setKey("switch_preference");
     61         switchPref.setTitle(R.string.title_switch_preference);
     62         switchPref.setSummary(R.string.summary_switch_preference);
     63         inlinePrefCat.addPreference(switchPref);
     64 
     65         // Dialog based preferences
     66         PreferenceCategory dialogBasedPrefCat = new PreferenceCategory(this);
     67         dialogBasedPrefCat.setTitle(R.string.dialog_based_preferences);
     68         root.addPreference(dialogBasedPrefCat);
     69 
     70         // Edit text preference
     71         EditTextPreference editTextPref = new EditTextPreference(this);
     72         editTextPref.setDialogTitle(R.string.dialog_title_edittext_preference);
     73         editTextPref.setKey("edittext_preference");
     74         editTextPref.setTitle(R.string.title_edittext_preference);
     75         editTextPref.setSummary(R.string.summary_edittext_preference);
     76         dialogBasedPrefCat.addPreference(editTextPref);
     77 
     78         // List preference
     79         ListPreference listPref = new ListPreference(this);
     80         listPref.setEntries(R.array.entries_list_preference);
     81         listPref.setEntryValues(R.array.entryvalues_list_preference);
     82         listPref.setDialogTitle(R.string.dialog_title_list_preference);
     83         listPref.setKey("list_preference");
     84         listPref.setTitle(R.string.title_list_preference);
     85         listPref.setSummary(R.string.summary_list_preference);
     86         dialogBasedPrefCat.addPreference(listPref);
     87 
     88         // Launch preferences
     89         PreferenceCategory launchPrefCat = new PreferenceCategory(this);
     90         launchPrefCat.setTitle(R.string.launch_preferences);
     91         root.addPreference(launchPrefCat);
     92 
     93         /*
     94          * The Preferences screenPref serves as a screen break (similar to page
     95          * break in word processing). Like for other preference types, we assign
     96          * a key here so that it is able to save and restore its instance state.
     97          */
     98         // Screen preference
     99         PreferenceScreen screenPref = getPreferenceManager().createPreferenceScreen(this);
    100         screenPref.setKey("screen_preference");
    101         screenPref.setTitle(R.string.title_screen_preference);
    102         screenPref.setSummary(R.string.summary_screen_preference);
    103         launchPrefCat.addPreference(screenPref);
    104 
    105         /*
    106          * You can add more preferences to screenPref that will be shown on the
    107          * next screen.
    108          */
    109 
    110         // Example of next screen toggle preference
    111         CheckBoxPreference nextScreenCheckBoxPref = new CheckBoxPreference(this);
    112         nextScreenCheckBoxPref.setKey("next_screen_toggle_preference");
    113         nextScreenCheckBoxPref.setTitle(R.string.title_next_screen_toggle_preference);
    114         nextScreenCheckBoxPref.setSummary(R.string.summary_next_screen_toggle_preference);
    115         screenPref.addPreference(nextScreenCheckBoxPref);
    116 
    117         // Intent preference
    118         PreferenceScreen intentPref = getPreferenceManager().createPreferenceScreen(this);
    119         intentPref.setIntent(new Intent().setAction(Intent.ACTION_VIEW)
    120                 .setData(Uri.parse("http://www.android.com")));
    121         intentPref.setTitle(R.string.title_intent_preference);
    122         intentPref.setSummary(R.string.summary_intent_preference);
    123         launchPrefCat.addPreference(intentPref);
    124 
    125         // Preference attributes
    126         PreferenceCategory prefAttrsCat = new PreferenceCategory(this);
    127         prefAttrsCat.setTitle(R.string.preference_attributes);
    128         root.addPreference(prefAttrsCat);
    129 
    130         // Visual parent toggle preference
    131         CheckBoxPreference parentCheckBoxPref = new CheckBoxPreference(this);
    132         parentCheckBoxPref.setTitle(R.string.title_parent_preference);
    133         parentCheckBoxPref.setSummary(R.string.summary_parent_preference);
    134         prefAttrsCat.addPreference(parentCheckBoxPref);
    135 
    136         // Visual child toggle preference
    137         // See res/values/attrs.xml for the <declare-styleable> that defines
    138         // TogglePrefAttrs.
    139         TypedArray a = obtainStyledAttributes(R.styleable.TogglePrefAttrs);
    140         CheckBoxPreference childCheckBoxPref = new CheckBoxPreference(this);
    141         childCheckBoxPref.setTitle(R.string.title_child_preference);
    142         childCheckBoxPref.setSummary(R.string.summary_child_preference);
    143         childCheckBoxPref.setLayoutResource(
    144                 a.getResourceId(R.styleable.TogglePrefAttrs_android_preferenceLayoutChild,
    145                         0));
    146         prefAttrsCat.addPreference(childCheckBoxPref);
    147         a.recycle();
    148 
    149         return root;
    150     }
    151 }
    152