Please help me out here, I'm hitting brick wall for the last two days and can't figure it out.
I have a simple PreferenceFragment and would like to inflate it from an Activity.
Here is the res/xml/preferences.xml:
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
android:key="preferences">
<PreferenceCategory
android:title="@string/notification_basic"
android:key="notification">
<CheckBoxPreference
android:key="enable_notification"
android:summary="@string/enable_notification"
android:title="@string/notification_title"
android:defaultValue="false">
</CheckBoxPreference>
<CheckBoxPreference
android:key="enable"
android:summary="@string/enable_instant_notification"
android:title="@string/notify_me_instantly"
android:dependency="enable_notification"
android:defaultValue="false">
</CheckBoxPreference>
</PreferenceCategory>
<PreferenceCategory
android:title="@string/sign_up_notify_me_where_section"
android:key="locations">
<MultiSelectListPreference
android:dialogTitle="@string/sign_up_notify_me_where_title"
android:key="location"
android:summary="@string/sign_up_notify_me_where"
android:title="@string/sign_up_notify_me_where_title"
android:entries="@array/locations"
android:entryValues="@array/locations_values"
android:defaultValue="@array/empty_array"
android:dependency="enable_notification"
/>
</PreferenceCategory>
<PreferenceCategory
android:title="@string/sign_up_notify_me_type_section"
android:key="types">
<MultiSelectListPreference
android:dialogTitle="@string/sign_up_notify_me_type_title"
android:key="type"
android:summary="@string/sign_up_notify_me_type"
android:title="@string/sign_up_notify_me_type_title"
android:entries="@array/types"
android:entryValues="@array/types_values"
android:defaultValue="@array/empty_array"
android:dependency="enable_notification"
/>
</PreferenceCategory>
<PreferenceCategory
android:title="@string/sign_up_notify_me_who_section"
android:key="units">
<MultiSelectListPreference
android:dialogTitle="@string/sign_up_notify_me_who_title"
android:key="units"
android:summary="@string/sign_up_notify_me_who"
android:title="@string/sign_up_notify_me_who_title"
android:entries="@array/units"
android:entryValues="@array/units_values"
android:defaultValue="@array/empty_array"
android:dependency="enable_notification"
/>
</PreferenceCategory>
</PreferenceScreen>
The Activity:
public class HomeActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.home);
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.add(R.id.fragment_container, new SignUpPreferenceFragment());
fragmentTransaction.commit();
}
}
The layout of the activity:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/home_layout">
<FrameLayout android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="@+id/fragment_container"
/>
</RelativeLayout>
And finally the stacktrace:
04-05 20:11:07.641: ERROR/AndroidRuntime(5731): FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.soid.client.activities/com.soid.client.activities.HomeActivity}: android.view.InflateException: Binary XML file line #1: Error inflating class PreferenceScreen
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2355)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2391)
at android.app.ActivityThread.access$600(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1335)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:155)
at android.app.ActivityThread.main(ActivityThread.java:5520)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1029)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:796)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #1: Error inflating class PreferenceScreen
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:698)
at android.view.LayoutInflater.inflate(LayoutInflater.java:466)
at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
at com.soid.client.activities.SignUpPreferenceFragment.onCreateView(SignUpPreferenceFragment.ja va:18)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:831)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1037)
at android.app.BackStackRecord.run(BackStackRecord.java:635)
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1399)
at android.app.Activity.performStart(Activity.java:5075)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2328)
... 11 more
Caused by: java.lang.ClassNotFoundException: android.view.PreferenceScreen
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.view.LayoutInflater.createView(LayoutInflater.java:552)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:643)
at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:660)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:685)
... 20 more
Why does it search for the PreferenceScreen in android.view? I'm totally lost, pleas help me out.
Edit:
I forgot to paste the actual PreferenceFragment:
public class SignUpPreferenceFragment extends PreferenceFragment {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.xml.preferences, container, false);
Thank you!
You need to remove the onCreateView function in your SignUpPreferenceFragment because you cannot inflate the preferences using the inflater.
That is why you are getting the error stating that there is an error inflating PreferenceScreen because it does not understand that tag/class in the xml.
The inflating of preferences.xml is done by addPreferencesFromResource in onCreate.
You must have a class where you inflate the preference.xml like this:
public static class SignUpPreferenceFragment extends PreferenceFragment {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Load the preferences from an XML resource
addPreferencesFromResource(R.xml.preferences);
}
}
Add preference theme into your styles.xml
<item name="preferenceTheme">@style/PreferenceThemeOverlay</item>
来源：https://stackoverflow.com/questions/22885261/android-error-inflating-class-preferencescreen