Android 属性页PreferenceActivity的实现

???????? 在一般的应用中可能涉及到设置一个应用的功能属性，这时候可能需要使用到PreferenceActivity对象进行扩展适合自己的设置功能点。

package com.easyway.android.preferences;import android.content.Intent;import android.content.res.TypedArray;import android.net.Uri;import android.os.Bundle;import android.preference.CheckBoxPreference;import android.preference.EditTextPreference;import android.preference.ListPreference;import android.preference.PreferenceActivity;import android.preference.PreferenceCategory;import android.preference.PreferenceScreen;/** * 在项目中如果想设置应用的设置功能可能就要使用这个PreferenceActivity * 对象 设置属性页 *  *  *   public abstract class PreferenceActivity extends ListActivity implements        PreferenceManager.OnPreferenceTreeClickListener *  由代码的实现可以知道属性页继承自ListActivity并实现自己的事件监听类 *   *   * @author longgangbai * */public class PreferencesFromCode extends PreferenceActivity {/** *  */    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        //设置属性页        setPreferenceScreen(createPreferenceHierarchy());    }    /**     * 创建一个属性页面的容器对象PreferenceScreen     *   一个PreferenceScreen中可能包含多个 PreferenceCategory     *   每一个PreferenceCategory可能包含多个其他组件     *        *      * @return     */    private PreferenceScreen createPreferenceHierarchy() {        // Root        PreferenceScreen root = getPreferenceManager().createPreferenceScreen(this);                // Inline preferences         PreferenceCategory inlinePrefCat = new PreferenceCategory(this);        // Toggle preference        CheckBoxPreference togglePref = new CheckBoxPreference(this);        togglePref.setKey("toggle_preference");        togglePref.setTitle(R.string.title_toggle_preference);        togglePref.setSummary(R.string.summary_toggle_preference);        inlinePrefCat.addPreference(togglePref);                inlinePrefCat.setTitle(R.string.inline_preferences);                root.addPreference(inlinePrefCat);                                      // Dialog based preferences        PreferenceCategory dialogBasedPrefCat = new PreferenceCategory(this);                // Edit text preference        EditTextPreference editTextPref = new EditTextPreference(this);        editTextPref.setDialogTitle(R.string.dialog_title_edittext_preference);        editTextPref.setKey("edittext_preference");        editTextPref.setTitle(R.string.title_edittext_preference);        editTextPref.setSummary(R.string.summary_edittext_preference);        dialogBasedPrefCat.addPreference(editTextPref);                        // List preference        ListPreference listPref = new ListPreference(this);        listPref.setEntries(R.array.entries_list_preference);        listPref.setEntryValues(R.array.entryvalues_list_preference);        listPref.setDialogTitle(R.string.dialog_title_list_preference);        listPref.setKey("list_preference");        listPref.setTitle(R.string.title_list_preference);        listPref.setSummary(R.string.summary_list_preference);        dialogBasedPrefCat.addPreference(listPref);                        dialogBasedPrefCat.setTitle(R.string.dialog_based_preferences);        root.addPreference(dialogBasedPrefCat);                       // Launch preferences        PreferenceCategory launchPrefCat = new PreferenceCategory(this);        launchPrefCat.setTitle(R.string.launch_preferences);        root.addPreference(launchPrefCat);        /*         * The Preferences screenPref serves as a screen break (similar to page         * break in word processing). Like for other preference types, we assign         * a key here so that it is able to save and restore its instance state.         */        // Screen preference        PreferenceScreen screenPref = getPreferenceManager().createPreferenceScreen(this);        screenPref.setKey("screen_preference");        screenPref.setTitle(R.string.title_screen_preference);        screenPref.setSummary(R.string.summary_screen_preference);        launchPrefCat.addPreference(screenPref);                /*         * You can add more preferences to screenPref that will be shown on the         * next screen.         */                // Example of next screen toggle preference        CheckBoxPreference nextScreenCheckBoxPref = new CheckBoxPreference(this);        nextScreenCheckBoxPref.setKey("next_screen_toggle_preference");        nextScreenCheckBoxPref.setTitle(R.string.title_next_screen_toggle_preference);        nextScreenCheckBoxPref.setSummary(R.string.summary_next_screen_toggle_preference);        screenPref.addPreference(nextScreenCheckBoxPref);                // Intent preference        PreferenceScreen intentPref = getPreferenceManager().createPreferenceScreen(this);        intentPref.setIntent(new Intent().setAction(Intent.ACTION_VIEW)                .setData(Uri.parse("http://www.android.com")));        intentPref.setTitle(R.string.title_intent_preference);        intentPref.setSummary(R.string.summary_intent_preference);        launchPrefCat.addPreference(intentPref);                // Preference attributes        PreferenceCategory prefAttrsCat = new PreferenceCategory(this);        prefAttrsCat.setTitle(R.string.preference_attributes);                root.addPreference(prefAttrsCat);                                          // Visual parent toggle preference        CheckBoxPreference parentCheckBoxPref = new CheckBoxPreference(this);        parentCheckBoxPref.setTitle(R.string.title_parent_preference);        parentCheckBoxPref.setSummary(R.string.summary_parent_preference);        prefAttrsCat.addPreference(parentCheckBoxPref);                // Visual child toggle preference        // See res/values/attrs.xml for the <declare-styleable> that defines        // TogglePrefAttrs.        //获取属性文件中的属性的方法        TypedArray a = obtainStyledAttributes(R.styleable.TogglePrefAttrs);        CheckBoxPreference childCheckBoxPref = new CheckBoxPreference(this);        childCheckBoxPref.setTitle(R.string.title_child_preference);        childCheckBoxPref.setSummary(R.string.summary_child_preference);        childCheckBoxPref.setLayoutResource(                a.getResourceId(R.styleable.TogglePrefAttrs_android_preferenceLayoutChild,                        0));        prefAttrsCat.addPreference(childCheckBoxPref);        a.recycle();                return root;    }}

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package com.easyway.android.preferences;import android.os.Bundle;import android.preference.PreferenceActivity;/** * 基于xml的创建方式 *  * xml文件的位置在res/xml/preferences下面 *  * 格式如下： *  * <pre> <PreferenceScreen        xmlns:android="http://schemas.android.com/apk/res/android">    <PreferenceCategory            android:title="@string/inline_preferences">        <CheckBoxPreference                android:key="checkbox_preference"                android:title="@string/title_toggle_preference"                android:summary="@string/summary_toggle_preference" />    </PreferenceCategory>     </PreferenceScreen>           <pre>          * 创建一个属性页面的容器对象PreferenceScreen *   一个PreferenceScreen中可能包含多个 PreferenceCategory *   每一个PreferenceCategory可能包含多个其他组件 * @author longgangbai * */public class PreferencesFromXml extends PreferenceActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        //加载xml方式创建一个属性设置页面        // Load the preferences from an XML resource        addPreferencesFromResource(R.xml.preferences);    }}

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preferences.xml

<?xml version="1.0" encoding="utf-8"?><!-- This is a primitive example showing the different types of preferences available. --><PreferenceScreen        xmlns:android="http://schemas.android.com/apk/res/android">    <PreferenceCategory            android:title="@string/inline_preferences">                    <CheckBoxPreference                android:key="checkbox_preference"                android:title="@string/title_toggle_preference"                android:summary="@string/summary_toggle_preference" />                </PreferenceCategory>                    <PreferenceCategory            android:title="@string/dialog_based_preferences">        <EditTextPreference                android:key="edittext_preference"                android:title="@string/title_edittext_preference"                android:summary="@string/summary_edittext_preference"                android:dialogTitle="@string/dialog_title_edittext_preference" />                        <ListPreference                android:key="list_preference"                android:title="@string/title_list_preference"                android:summary="@string/summary_list_preference"                android:entries="@array/entries_list_preference"                android:entryValues="@array/entryvalues_list_preference"                android:dialogTitle="@string/dialog_title_list_preference" />    </PreferenceCategory>    <PreferenceCategory            android:title="@string/launch_preferences">        <!-- This PreferenceScreen tag serves as a screen break (similar to page break             in word processing). Like for other preference types, we assign a key             here so it is able to save and restore its instance state. -->        <PreferenceScreen                android:key="screen_preference"                android:title="@string/title_screen_preference"                android:summary="@string/summary_screen_preference">                        <!-- You can place more preferences here that will be shown on the next screen. -->                                 <CheckBoxPreference                    android:key="next_screen_checkbox_preference"                    android:title="@string/title_next_screen_toggle_preference"                    android:summary="@string/summary_next_screen_toggle_preference" />                        </PreferenceScreen>        <PreferenceScreen                android:title="@string/title_intent_preference"                android:summary="@string/summary_intent_preference">            <intent android:action="android.intent.action.VIEW"                    android:data="http://www.android.com" />        </PreferenceScreen>    </PreferenceCategory>        <PreferenceCategory            android:title="@string/preference_attributes">            <CheckBoxPreference                android:key="parent_checkbox_preference"                android:title="@string/title_parent_preference"                android:summary="@string/summary_parent_preference" />        <!-- The visual style of a child is defined by this styled theme attribute. -->        <CheckBoxPreference                android:key="child_checkbox_preference"                android:dependency="parent_checkbox_preference"                android:layout="?android:attr/preferenceLayoutChild"                android:title="@string/title_child_preference"                android:summary="@string/summary_child_preference" />                </PreferenceCategory>    </PreferenceScreen>

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1 楼 zoumengdie 2012-07-19 谢谢！！！