Android Eclipse首选项生成器错误
我通过Eclipse的activity generator为所有API生成了Android Eclipse首选项生成器错误,android,eclipse,preferenceactivity,Android,Eclipse,Preferenceactivity,我通过Eclipse的activity generator为所有API生成了PreferenceActivity,它产生了一些无法自行修复的问题; 如何解决此问题? 完整代码: import android.annotation.TargetApi; import android.content.Context; import android.content.res.Configuration; import android.media.Ringtone; import android.medi
PreferenceActivity
,它产生了一些无法自行修复的问题;
如何解决此问题?完整代码:
import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.Configuration;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceCategory;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;
import android.preference.RingtonePreference;
import android.text.TextUtils;
import android.view.MenuItem;
import android.support.v4.app.NavUtils;
import java.util.List;
/**
* A {@link PreferenceActivity} that presents a set of application settings. On
* handset devices, settings are presented as a single list. On tablets,
* settings are split by category, with category headers shown to the left of
* the list of settings.
* <p>
* See <a href="http://developer.android.com/design/patterns/settings.html">
* Android Design: Settings</a> for design guidelines and the <a
* href="http://developer.android.com/guide/topics/ui/settings.html">Settings
* API Guide</a> for more information on developing a Settings UI.
*/
public class PreferenceActivity extends PreferenceActivity {
/**
* Determines whether to always show the simplified settings UI, where
* settings are presented in a single list. When false, settings are shown
* as a master/detail two-pane view on tablets. When true, a single pane is
* shown on tablets.
*/
private static final boolean ALWAYS_SIMPLE_PREFS = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setupActionBar();
}
/**
* Set up the {@link android.app.ActionBar}, if the API is available.
*/
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
private void setupActionBar() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
// Show the Up button in the action bar.
getActionBar().setDisplayHomeAsUpEnabled(true);
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == android.R.id.home) {
// This ID represents the Home or Up button. In the case of this
// activity, the Up button is shown. Use NavUtils to allow users
// to navigate up one level in the application structure. For
// more details, see the Navigation pattern on Android Design:
//
// http://developer.android.com/design/patterns/navigation.html#up-vs-back
//
// TODO: If Settings has multiple levels, Up should navigate up
// that hierarchy.
NavUtils.navigateUpFromSameTask(this);
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
setupSimplePreferencesScreen();
}
/**
* Shows the simplified settings UI if the device configuration if the
* device configuration dictates that a simplified, single-pane UI should be
* shown.
*/
private void setupSimplePreferencesScreen() {
if (!isSimplePreferences(this)) {
return;
}
// In the simplified UI, fragments are not used at all and we instead
// use the older PreferenceActivity APIs.
// Add 'general' preferences.
addPreferencesFromResource(R.xml.pref_general);
// Add 'notifications' preferences, and a corresponding header.
PreferenceCategory fakeHeader = new PreferenceCategory(this);
fakeHeader.setTitle(R.string.pref_header_notifications);
getPreferenceScreen().addPreference(fakeHeader);
addPreferencesFromResource(R.xml.pref_notification);
// Add 'data and sync' preferences, and a corresponding header.
fakeHeader = new PreferenceCategory(this);
fakeHeader.setTitle(R.string.pref_header_data_sync);
getPreferenceScreen().addPreference(fakeHeader);
addPreferencesFromResource(R.xml.pref_data_sync);
// Bind the summaries of EditText/List/Dialog/Ringtone preferences to
// their values. When their values change, their summaries are updated
// to reflect the new value, per the Android Design guidelines.
bindPreferenceSummaryToValue(findPreference("example_text"));
bindPreferenceSummaryToValue(findPreference("example_list"));
bindPreferenceSummaryToValue(findPreference("notifications_new_message_ringtone"));
bindPreferenceSummaryToValue(findPreference("sync_frequency"));
}
/** {@inheritDoc} */
@Override
public boolean onIsMultiPane() {
return isXLargeTablet(this) && !isSimplePreferences(this);
}
/**
* Helper method to determine if the device has an extra-large screen. For
* example, 10" tablets are extra-large.
*/
private static boolean isXLargeTablet(Context context) {
return (context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_XLARGE;
}
/**
* Determines whether the simplified settings UI should be shown. This is
* true if this is forced via {@link #ALWAYS_SIMPLE_PREFS}, or the device
* doesn't have newer APIs like {@link PreferenceFragment}, or the device
* doesn't have an extra-large screen. In these cases, a single-pane
* "simplified" settings UI should be shown.
*/
private static boolean isSimplePreferences(Context context) {
return ALWAYS_SIMPLE_PREFS
|| Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB
|| !isXLargeTablet(context);
}
/** {@inheritDoc} */
@Override
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public void onBuildHeaders(List<Header> target) {
if (!isSimplePreferences(this)) {
loadHeadersFromResource(R.xml.pref_headers, target);
}
}
/**
* A preference value change listener that updates the preference's summary
* to reflect its new value.
*/
private static Preference.OnPreferenceChangeListener sBindPreferenceSummaryToValueListener = new Preference.OnPreferenceChangeListener() {
@Override
public boolean onPreferenceChange(Preference preference, Object value) {
String stringValue = value.toString();
if (preference instanceof ListPreference) {
// For list preferences, look up the correct display value in
// the preference's 'entries' list.
ListPreference listPreference = (ListPreference) preference;
int index = listPreference.findIndexOfValue(stringValue);
// Set the summary to reflect the new value.
preference
.setSummary(index >= 0 ? listPreference.getEntries()[index]
: null);
} else if (preference instanceof RingtonePreference) {
// For ringtone preferences, look up the correct display value
// using RingtoneManager.
if (TextUtils.isEmpty(stringValue)) {
// Empty values correspond to 'silent' (no ringtone).
preference.setSummary(R.string.pref_ringtone_silent);
} else {
Ringtone ringtone = RingtoneManager.getRingtone(
preference.getContext(), Uri.parse(stringValue));
if (ringtone == null) {
// Clear the summary if there was a lookup error.
preference.setSummary(null);
} else {
// Set the summary to reflect the new ringtone display
// name.
String name = ringtone
.getTitle(preference.getContext());
preference.setSummary(name);
}
}
} else {
// For all other preferences, set the summary to the value's
// simple string representation.
preference.setSummary(stringValue);
}
return true;
}
};
/**
* Binds a preference's summary to its value. More specifically, when the
* preference's value is changed, its summary (line of text below the
* preference title) is updated to reflect the value. The summary is also
* immediately updated upon calling this method. The exact display format is
* dependent on the type of preference.
*
* @see #sBindPreferenceSummaryToValueListener
*/
private static void bindPreferenceSummaryToValue(Preference preference) {
// Set the listener to watch for value changes.
preference
.setOnPreferenceChangeListener(sBindPreferenceSummaryToValueListener);
// Trigger the listener immediately with the preference's
// current value.
sBindPreferenceSummaryToValueListener.onPreferenceChange(
preference,
PreferenceManager.getDefaultSharedPreferences(
preference.getContext()).getString(preference.getKey(),
""));
}
/**
* This fragment shows general preferences only. It is used when the
* activity is showing a two-pane settings UI.
*/
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static class GeneralPreferenceFragment extends PreferenceFragment {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.pref_general);
// Bind the summaries of EditText/List/Dialog/Ringtone preferences
// to their values. When their values change, their summaries are
// updated to reflect the new value, per the Android Design
// guidelines.
bindPreferenceSummaryToValue(findPreference("example_text"));
bindPreferenceSummaryToValue(findPreference("example_list"));
}
}
/**
* This fragment shows notification preferences only. It is used when the
* activity is showing a two-pane settings UI.
*/
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static class NotificationPreferenceFragment extends
PreferenceFragment {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.pref_notification);
// Bind the summaries of EditText/List/Dialog/Ringtone preferences
// to their values. When their values change, their summaries are
// updated to reflect the new value, per the Android Design
// guidelines.
bindPreferenceSummaryToValue(findPreference("notifications_new_message_ringtone"));
}
}
/**
* This fragment shows data and sync preferences only. It is used when the
* activity is showing a two-pane settings UI.
*/
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static class DataSyncPreferenceFragment extends PreferenceFragment {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.pref_data_sync);
// Bind the summaries of EditText/List/Dialog/Ringtone preferences
// to their values. When their values change, their summaries are
// updated to reflect the new value, per the Android Design
// guidelines.
bindPreferenceSummaryToValue(findPreference("sync_frequency"));
}
}
}
导入android.annotation.TargetApi;
导入android.content.Context;
导入android.content.res.Configuration;
导入android.media.Ringtone;
导入android.media.ringtonemager;
导入android.net.Uri;
导入android.os.Build;
导入android.os.Bundle;
导入android.preference.ListPreference;
导入android.preference.preference;
导入android.preference.PreferenceActivity;
导入android.preference.PreferenceCategory;
导入android.preference.PreferenceFragment;
导入android.preference.PreferenceManager;
导入android.preference.RingtonePreference;
导入android.text.TextUtils;
导入android.view.MenuItem;
导入android.support.v4.app.NavUtils;
导入java.util.List;
/**
*表示一组应用程序设置的{@link PreferenceActivity}。在…上
*手机设备、设置以单个列表的形式显示。在平板电脑上,
*设置按类别拆分,类别标题显示在
*设置列表。
*
*有关开发设置UI的更多信息,请参阅以获取设计指南和。
*/
公共类PreferenceActivity扩展了PreferenceActivity{
/**
*确定是否始终显示简化设置UI,其中
*设置显示在单个列表中。如果为false,则显示设置
*作为平板电脑上的主/详细双窗格视图。如果为true,则为单个窗格
*在平板电脑上显示。
*/
私有静态最终布尔值始终\u SIMPLE\u PREFS=false;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setupActionBar();
}
/**
*如果API可用,请设置{@link android.app.ActionBar}。
*/
@TargetApi(构建版本代码蜂窝)
私有void setupActionBar(){
if(Build.VERSION.SDK\u INT>=Build.VERSION\u code.HONEYCOMB){
//在操作栏中显示“向上”按钮。
getActionBar().setDisplayHomeAsUpEnabled(true);
}
}
@凌驾
公共布尔值onOptionsItemSelected(菜单项项){
int id=item.getItemId();
if(id==android.R.id.home){
//此ID表示“主页”或“向上”按钮
//活动中,将显示向上按钮。使用NavUtils允许用户
//在应用程序结构中向上导航一级。对于
//更多详细信息,请参见Android Design上的导航模式:
//
// http://developer.android.com/design/patterns/navigation.html#up-对背
//
//TODO:如果设置有多个级别,则“向上”应向上导航
//这种等级制度。
NavUtils.navigateUpFromSameTask(本);
返回true;
}
返回super.onOptionsItemSelected(项目);
}
@凌驾
后期创建时受保护的空(捆绑包savedInstanceState){
super.onPostCreate(savedInstanceState);
setupSimplePreferenceScreen();
}
/**
*如果设备配置为
*设备配置规定应使用简化的单窗格UI
*显示。
*/
私有void setupSimplePreferenceScreen(){
如果(!isSimplePreferences(此)){
返回;
}
//在简化的UI中,根本不使用片段,而是使用
//使用旧的PreferenceActivityAPI。
//添加“常规”首选项。
addPreferencesFromResource(R.xml.pref_-general);
//添加“通知”首选项和相应的标题。
PreferenceCategory fakeHeader=新的PreferenceCategory(此);
setTitle(R.string.pref_header_通知);
getPreferenceScreen().addPreference(fakeHeader);
addPreferencesFromResource(R.xml.pref_通知);
//添加“数据和同步”首选项以及相应的标题。
fakeHeader=新的首选项类别(此);
setTitle(R.string.pref_header_data_sync);
getPreferenceScreen().addPreference(fakeHeader);
addPreferencesFromResource(R.xml.pref_data_sync);
//将EditText/List/Dialog/Ringtone首选项的摘要绑定到
//它们的值。当它们的值发生变化时,它们的摘要会更新
//为了反映新的价值,根据Android设计指南。
bindPreferenceSummaryToValue(FindReference(“示例文本”);
bindPreferenceSummaryToValue(FindReference(“示例列表”);
bindPreferenceSummaryToValue(FindReference(“通知\新消息\铃声”);
bindPreferenceSummaryToValue(FindReference(“同步频率”);
}
/**{@inheritardoc}*/
@凌驾
公共布尔值onIsMultiPane(){
返回isxlargetable(此)和&!isSimplePreferences(此);
}
/**
*确定设备是否有超大屏幕的帮助器方法。对于
*例如,10英寸的平板电脑是特大型的。
*/
私有静态布尔值isxlargetable(上下文){
返回(context.getResources().getConfiguration().screenLayout&Configuration.screenLayout\u SIZE\u MASK)>=Configuration.screenLayout\u SIZE\u XLARGE;
}
/**
*确定是否应显示简化设置UI。这是
*如果通过{@link#ALWAYS _SIMPLE _PREFS}或设备强制执行,则为true
*没有更新的API,如{@link PreferenceFragment},或设备
*没有超大屏幕。在这种情况下,只有一个窗格
*应显示“简化”设置界面。
*/
私有静态布尔值首选项(上下文){
始终返回\u简单\u首选项
||Build.VERSION.SDK_INT