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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     private static final String PARENT_CHECKBOX_PREFERENCE = "parent_checkbox_preference";
     36 
     37     @Override
     38     protected void onCreate(Bundle savedInstanceState) {
     39         super.onCreate(savedInstanceState);
     40 
     41         PreferenceScreen root = getPreferenceManager().createPreferenceScreen(this);
     42         setPreferenceScreen(root);
     43         populatePreferenceHierarchy(root);
     44     }
     45 
     46     private void populatePreferenceHierarchy(PreferenceScreen root) {
     47         // Inline preferences
     48         PreferenceCategory inlinePrefCat = new PreferenceCategory(this);
     49         inlinePrefCat.setTitle(R.string.inline_preferences);
     50         root.addPreference(inlinePrefCat);
     51 
     52         // Checkbox preference
     53         CheckBoxPreference checkboxPref = new CheckBoxPreference(this);
     54         checkboxPref.setKey("checkbox_preference");
     55         checkboxPref.setTitle(R.string.title_checkbox_preference);
     56         checkboxPref.setSummary(R.string.summary_checkbox_preference);
     57         inlinePrefCat.addPreference(checkboxPref);
     58 
     59         // Switch preference
     60         SwitchPreference switchPref = new SwitchPreference(this);
     61         switchPref.setKey("switch_preference");
     62         switchPref.setTitle(R.string.title_switch_preference);
     63         switchPref.setSummary(R.string.summary_switch_preference);
     64         inlinePrefCat.addPreference(switchPref);
     65 
     66         // Dialog based preferences
     67         PreferenceCategory dialogBasedPrefCat = new PreferenceCategory(this);
     68         dialogBasedPrefCat.setTitle(R.string.dialog_based_preferences);
     69         root.addPreference(dialogBasedPrefCat);
     70 
     71         // Edit text preference
     72         EditTextPreference editTextPref = new EditTextPreference(this);
     73         editTextPref.setDialogTitle(R.string.dialog_title_edittext_preference);
     74         editTextPref.setKey("edittext_preference");
     75         editTextPref.setTitle(R.string.title_edittext_preference);
     76         editTextPref.setSummary(R.string.summary_edittext_preference);
     77         dialogBasedPrefCat.addPreference(editTextPref);
     78 
     79         // List preference
     80         ListPreference listPref = new ListPreference(this);
     81         listPref.setEntries(R.array.entries_list_preference);
     82         listPref.setEntryValues(R.array.entryvalues_list_preference);
     83         listPref.setDialogTitle(R.string.dialog_title_list_preference);
     84         listPref.setKey("list_preference");
     85         listPref.setTitle(R.string.title_list_preference);
     86         listPref.setSummary(R.string.summary_list_preference);
     87         dialogBasedPrefCat.addPreference(listPref);
     88 
     89         // Launch preferences
     90         PreferenceCategory launchPrefCat = new PreferenceCategory(this);
     91         launchPrefCat.setTitle(R.string.launch_preferences);
     92         root.addPreference(launchPrefCat);
     93 
     94         /*
     95          * The Preferences screenPref serves as a screen break (similar to page
     96          * break in word processing). Like for other preference types, we assign
     97          * a key here so that it is able to save and restore its instance state.
     98          */
     99         // Screen preference
    100         PreferenceScreen screenPref = getPreferenceManager().createPreferenceScreen(this);
    101         screenPref.setKey("screen_preference");
    102         screenPref.setTitle(R.string.title_screen_preference);
    103         screenPref.setSummary(R.string.summary_screen_preference);
    104         launchPrefCat.addPreference(screenPref);
    105 
    106         /*
    107          * You can add more preferences to screenPref that will be shown on the
    108          * next screen.
    109          */
    110 
    111         // Example of next screen toggle preference
    112         CheckBoxPreference nextScreenCheckBoxPref = new CheckBoxPreference(this);
    113         nextScreenCheckBoxPref.setKey("next_screen_toggle_preference");
    114         nextScreenCheckBoxPref.setTitle(R.string.title_next_screen_toggle_preference);
    115         nextScreenCheckBoxPref.setSummary(R.string.summary_next_screen_toggle_preference);
    116         screenPref.addPreference(nextScreenCheckBoxPref);
    117 
    118         // Intent preference
    119         PreferenceScreen intentPref = getPreferenceManager().createPreferenceScreen(this);
    120         intentPref.setIntent(new Intent().setAction(Intent.ACTION_VIEW)
    121                 .setData(Uri.parse("http://www.android.com")));
    122         intentPref.setTitle(R.string.title_intent_preference);
    123         intentPref.setSummary(R.string.summary_intent_preference);
    124         launchPrefCat.addPreference(intentPref);
    125 
    126         // Preference attributes
    127         PreferenceCategory prefAttrsCat = new PreferenceCategory(this);
    128         prefAttrsCat.setTitle(R.string.preference_attributes);
    129         root.addPreference(prefAttrsCat);
    130 
    131         // Visual parent toggle preference
    132         CheckBoxPreference parentCheckBoxPref = new CheckBoxPreference(this);
    133         parentCheckBoxPref.setTitle(R.string.title_parent_preference);
    134         parentCheckBoxPref.setSummary(R.string.summary_parent_preference);
    135         prefAttrsCat.addPreference(parentCheckBoxPref);
    136         parentCheckBoxPref.setKey(PARENT_CHECKBOX_PREFERENCE);
    137 
    138         // Visual child toggle preference
    139         // See res/values/attrs.xml for the <declare-styleable> that defines
    140         // TogglePrefAttrs.
    141         TypedArray a = obtainStyledAttributes(R.styleable.TogglePrefAttrs);
    142         CheckBoxPreference childCheckBoxPref = new CheckBoxPreference(this);
    143         childCheckBoxPref.setTitle(R.string.title_child_preference);
    144         childCheckBoxPref.setSummary(R.string.summary_child_preference);
    145         childCheckBoxPref.setLayoutResource(
    146                 a.getResourceId(R.styleable.TogglePrefAttrs_android_preferenceLayoutChild,
    147                         0));
    148         prefAttrsCat.addPreference(childCheckBoxPref);
    149         childCheckBoxPref.setDependency(PARENT_CHECKBOX_PREFERENCE);
    150         a.recycle();
    151     }
    152 }
    153