我很困惑，因为如果我在一个新项目中创建PreferenceActivity它会很好，但是如果我在当前项目中创建它，它就不起作用了。 我确信我的SDK版本超过了14。
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="19" />
代码由eclipse自动创建。
package com.example.cornerstorepos;
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.util.Log;
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 SettingsActivity 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 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"));
}
}
}
这是XML代码。
<CheckBoxPreference
android:key="example_checkbox"
android:summary="@string/pref_description_social_recommendations"
android:title="@string/pref_title_social_recommendations" />
<SwitchPreference
android:key="checkbox_preference"
android:title="@string/pref_title_social_recommendations" />
<!-- NOTE: EditTextPreference accepts EditText attributes. -->
<!-- NOTE: EditTextPreference's summary should be set to its value by the activity code. -->
<EditTextPreference
android:capitalize="words"
android:defaultValue="@string/pref_default_display_name"
android:inputType="textCapWords"
android:key="example_text"
android:maxLines="1"
android:selectAllOnFocus="true"
android:singleLine="true"
android:title="@string/pref_title_display_name" />
<!--
NOTE: Hide buttons to simplify the UI. Users can touch outside the dialog to
dismiss it.
-->
<!-- NOTE: ListPreference's summary should be set to its value by the activity code. -->
<ListPreference
android:defaultValue="-1"
android:entries="@array/pref_example_list_titles"
android:entryValues="@array/pref_example_list_values"
android:key="example_list"
android:negativeButtonText="@null"
android:positiveButtonText="@null"
android:title="@string/pref_title_add_friends_to_messages" />
这是错误消息。
06-18 16:35:33.377: E/AndroidRuntime(28815): FATAL EXCEPTION: main
06-18 16:35:33.377: E/AndroidRuntime(28815): android.view.InflateException: Binary XML file line #19: Error inflating class android.widget.Switch
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.LayoutInflater.createView(LayoutInflater.java:613)
06-18 16:35:33.377: E/AndroidRuntime(28815): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:660)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:685)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.LayoutInflater.inflate(LayoutInflater.java:466)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.preference.Preference.onCreateView(Preference.java:536)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.preference.Preference.getView(Preference.java:507)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.preference.PreferenceGroupAdapter.getView(PreferenceGroupAdapter.java:330)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.AbsListView.obtainView(AbsListView.java:2360)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.ListView.makeAndAddView(ListView.java:1883)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.ListView.fillDown(ListView.java:716)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.ListView.fillFromTop(ListView.java:777)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.ListView.layoutChildren(ListView.java:1699)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.AbsListView.onLayout(AbsListView.java:2161)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.View.layout(View.java:14123)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.ViewGroup.layout(ViewGroup.java:4464)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1673)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1531)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.onLayout(LinearLayout.java:1444)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.View.layout(View.java:14123)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.ViewGroup.layout(ViewGroup.java:4464)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.FrameLayout.onLayout(FrameLayout.java:464)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.View.layout(View.java:14123)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.ViewGroup.layout(ViewGroup.java:4464)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1673)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1531)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.onLayout(LinearLayout.java:1444)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.View.layout(View.java:14123)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.ViewGroup.layout(ViewGroup.java:4464)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1673)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.layoutHorizontal(LinearLayout.java:1662)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.onLayout(LinearLayout.java:1446)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.View.layout(View.java:14123)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.ViewGroup.layout(ViewGroup.java:4464)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1673)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1531)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.onLayout(LinearLayout.java:1444)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.View.layout(View.java:14123)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.ViewGroup.layout(ViewGroup.java:4464)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.FrameLayout.onLayout(FrameLayout.java:464)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.View.layout(View.java:14123)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.ViewGroup.layout(ViewGroup.java:4464)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1673)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1531)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.LinearLayout.onLayout(LinearLayout.java:1444)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.View.layout(View.java:14123)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.ViewGroup.layout(ViewGroup.java:4464)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.widget.FrameLayout.onLayout(FrameLayout.java:464)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.View.layout(View.java:14123)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.ViewGroup.layout(ViewGroup.java:4464)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2183)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1947)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1139)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4879)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:776)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.Choreographer.doCallbacks(Choreographer.java:579)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.Choreographer.doFrame(Choreographer.java:548)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:762)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.os.Handler.handleCallback(Handler.java:725)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.os.Handler.dispatchMessage(Handler.java:92)
06-18 16:35:33.377: E/AndroidRuntime(28815): at android.os.Looper.loop(Loope
感谢您的帮助。 ：）
答案 0 :(得分：0)
http://developer.android.com/reference/android/widget/Switch.html
Since: API Level 14
Switch小部件是在ICS中引入的。
来源：
Erorr inflating class switch, ActionBarSherlock (InflateException)