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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.app;
     18 
     19 import android.content.Intent;
     20 import android.content.res.TypedArray;
     21 import android.net.Uri;
     22 import android.os.Bundle;
     23 import android.preference.CheckBoxPreference;
     24 import android.preference.EditTextPreference;
     25 import android.preference.ListPreference;
     26 import android.preference.PreferenceActivity;
     27 import android.preference.PreferenceCategory;
     28 import android.preference.PreferenceScreen;
     29 
     30 import com.example.android.apis.R;
     31 
     32 public class PreferencesFromCode extends PreferenceActivity {
     33 
     34     @Override
     35     protected void onCreate(Bundle savedInstanceState) {
     36         super.onCreate(savedInstanceState);
     37 
     38         setPreferenceScreen(createPreferenceHierarchy());
     39     }
     40 
     41     private PreferenceScreen createPreferenceHierarchy() {
     42         // Root
     43         PreferenceScreen root = getPreferenceManager().createPreferenceScreen(this);
     44 
     45         // Inline preferences
     46         PreferenceCategory inlinePrefCat = new PreferenceCategory(this);
     47         inlinePrefCat.setTitle(R.string.inline_preferences);
     48         root.addPreference(inlinePrefCat);
     49 
     50         // Toggle preference
     51         CheckBoxPreference togglePref = new CheckBoxPreference(this);
     52         togglePref.setKey("toggle_preference");
     53         togglePref.setTitle(R.string.title_toggle_preference);
     54         togglePref.setSummary(R.string.summary_toggle_preference);
     55         inlinePrefCat.addPreference(togglePref);
     56 
     57         // Dialog based preferences
     58         PreferenceCategory dialogBasedPrefCat = new PreferenceCategory(this);
     59         dialogBasedPrefCat.setTitle(R.string.dialog_based_preferences);
     60         root.addPreference(dialogBasedPrefCat);
     61 
     62         // Edit text preference
     63         EditTextPreference editTextPref = new EditTextPreference(this);
     64         editTextPref.setDialogTitle(R.string.dialog_title_edittext_preference);
     65         editTextPref.setKey("edittext_preference");
     66         editTextPref.setTitle(R.string.title_edittext_preference);
     67         editTextPref.setSummary(R.string.summary_edittext_preference);
     68         dialogBasedPrefCat.addPreference(editTextPref);
     69 
     70         // List preference
     71         ListPreference listPref = new ListPreference(this);
     72         listPref.setEntries(R.array.entries_list_preference);
     73         listPref.setEntryValues(R.array.entryvalues_list_preference);
     74         listPref.setDialogTitle(R.string.dialog_title_list_preference);
     75         listPref.setKey("list_preference");
     76         listPref.setTitle(R.string.title_list_preference);
     77         listPref.setSummary(R.string.summary_list_preference);
     78         dialogBasedPrefCat.addPreference(listPref);
     79 
     80         // Launch preferences
     81         PreferenceCategory launchPrefCat = new PreferenceCategory(this);
     82         launchPrefCat.setTitle(R.string.launch_preferences);
     83         root.addPreference(launchPrefCat);
     84 
     85         /*
     86          * The Preferences screenPref serves as a screen break (similar to page
     87          * break in word processing). Like for other preference types, we assign
     88          * a key here so that it is able to save and restore its instance state.
     89          */
     90         // Screen preference
     91         PreferenceScreen screenPref = getPreferenceManager().createPreferenceScreen(this);
     92         screenPref.setKey("screen_preference");
     93         screenPref.setTitle(R.string.title_screen_preference);
     94         screenPref.setSummary(R.string.summary_screen_preference);
     95         launchPrefCat.addPreference(screenPref);
     96 
     97         /*
     98          * You can add more preferences to screenPref that will be shown on the
     99          * next screen.
    100          */
    101 
    102         // Example of next screen toggle preference
    103         CheckBoxPreference nextScreenCheckBoxPref = new CheckBoxPreference(this);
    104         nextScreenCheckBoxPref.setKey("next_screen_toggle_preference");
    105         nextScreenCheckBoxPref.setTitle(R.string.title_next_screen_toggle_preference);
    106         nextScreenCheckBoxPref.setSummary(R.string.summary_next_screen_toggle_preference);
    107         screenPref.addPreference(nextScreenCheckBoxPref);
    108 
    109         // Intent preference
    110         PreferenceScreen intentPref = getPreferenceManager().createPreferenceScreen(this);
    111         intentPref.setIntent(new Intent().setAction(Intent.ACTION_VIEW)
    112                 .setData(Uri.parse("http://www.android.com")));
    113         intentPref.setTitle(R.string.title_intent_preference);
    114         intentPref.setSummary(R.string.summary_intent_preference);
    115         launchPrefCat.addPreference(intentPref);
    116 
    117         // Preference attributes
    118         PreferenceCategory prefAttrsCat = new PreferenceCategory(this);
    119         prefAttrsCat.setTitle(R.string.preference_attributes);
    120         root.addPreference(prefAttrsCat);
    121 
    122         // Visual parent toggle preference
    123         CheckBoxPreference parentCheckBoxPref = new CheckBoxPreference(this);
    124         parentCheckBoxPref.setTitle(R.string.title_parent_preference);
    125         parentCheckBoxPref.setSummary(R.string.summary_parent_preference);
    126         prefAttrsCat.addPreference(parentCheckBoxPref);
    127 
    128         // Visual child toggle preference
    129         // See res/values/attrs.xml for the <declare-styleable> that defines
    130         // TogglePrefAttrs.
    131         TypedArray a = obtainStyledAttributes(R.styleable.TogglePrefAttrs);
    132         CheckBoxPreference childCheckBoxPref = new CheckBoxPreference(this);
    133         childCheckBoxPref.setTitle(R.string.title_child_preference);
    134         childCheckBoxPref.setSummary(R.string.summary_child_preference);
    135         childCheckBoxPref.setLayoutResource(
    136                 a.getResourceId(R.styleable.TogglePrefAttrs_android_preferenceLayoutChild,
    137                         0));
    138         prefAttrsCat.addPreference(childCheckBoxPref);
    139         a.recycle();
    140 
    141         return root;
    142     }
    143 }
    144