pref_headers cannot be resolved or is not a field

[Ibochkarev]

Adding to the project library created a folder xml for a file called hml. In the activity of adding the file and get an error

package ru.test.android.enviroment;

import android.R;
import android.content.Context;
import android.os.Bundle;

import net.saik0.android.unifiedpreference.UnifiedPreferenceFragment;
import net.saik0.android.unifiedpreference.UnifiedSherlockPreferenceActivity;

public class PreferenceActivity extends UnifiedSherlockPreferenceActivity {

    @Override public void onCreate(Bundle savedInstanceState) {
        // Set header resource MUST BE CALLED BEFORE super.onCreate
                setHeaderRes(R.xml.pref_headers);
                // Set desired preference file and mode (optional)
    }

    public static class GeneralPreferenceFragment extends UnifiedPreferenceFragment {}
}

Error:
pref_headers cannot be resolved or is not a field PreferenceActivity.java /SplashActivity/src/ru/test/android/enviroment line 14 Java Problem

[jromero]

You are importing android.R instead of ru.test.android.enviroment.R class.

Such that...
pref_headers should be a file on YOUR project.
It should be located under /res/xml/pref_headers.xml

For contents see:
https://github.com/saik0/UnifiedPreference/blob/master/demo/res/xml/pref_headers.xml
and:
https://github.com/saik0/UnifiedPreference/blob/master/demo/res/xml/pref_general.xml