Question

I am trying to establish a settings screen for my Android 4.0+ app. I can not get the two checkboxes vibratePreference and soundPreference to display. I don’t think UserPreferencesFragment ever instantiates. Below are the files involved. I’ve been on this for a couple of nights and I can not figure out what I’m missing. What am I over looking?

Thanks, PLA

preferences_headers.xml

<preference-headers xmlns:android="http://schemas.android.com/apk/res/android" >

    <header
        android:fragment="com.hometelco.hfa.activities.UserPreferencesFragment"
        android:summary="Home Field Advantage user settings"
        android:title="User Settings" />

</preference-headers> 

preferences.xml

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >

    <PreferenceCategory android:title="User Settings" >
        <CheckBoxPreference
            android:defaultValue="true"
            android:key="vibratePreference"
            android:summary="Vibrate on adds and updates"
            android:title="Vibrate" />
        <CheckBoxPreference
            android:defaultValue="true"
            android:key="soundPreference"
            android:summary="Play sound on adds and updates"
            android:title="Sound" />
    </PreferenceCategory>

</PreferenceScreen>

UserPreferencesActivity.java

package com.hometelco.hfa.activities;

import java.util.List;

import android.preference.PreferenceActivity;
import android.util.Log;

import com.hometelco.hfa.R;

public class UserPreferencesActivity extends PreferenceActivity {
    private static final String TAG = "UserPreferencesActivity";

    public void onBuildHeaders(List<Header> target) {
        Log.i(TAG, "onBuildHeaders before load");
        loadHeadersFromResource(R.xml.preference_headers, target);
        Log.i(TAG, "onBuildHeaders after load");
    }
}

UserPreferencesFragment.java

package com.hometelco.hfa.activities;

import android.os.Bundle;
import android.preference.PreferenceFragment;
import android.util.Log;

import com.hometelco.hfa.R;

public class UserPreferencesFragment extends PreferenceFragment {
    private final static String TAG = "UserPreferencesFragment";

    public void onCreate(Bundle savedInstanceState) {
        Log.i(TAG, "UserPreferencesFragment onCreate");
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.preferences);
    }
}

Answer 1

I apologize. My code was actually working the entire time. I was just not pressing on the settings header. When I did my check-boxes appeared. This is not what I want so I changed PreferenceActivity to the code seen below.

package com.hometelco.hfa.activities;

import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.preference.PreferenceFragment;
import android.util.Log;

import com.hometelco.hfa.R;

public class UserPreferencesActivity extends PreferenceActivity {
    private static final String TAG = "UserPreferencesActivity";

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.i(TAG, "onCreate hasHeaders: " + hasHeaders());
         getFragmentManager().beginTransaction().replace(android.R.id.content,
         new UserPreferencesFragment()).commit();
    }
/*
    public void onBuildHeaders(List<Header> target) {
        Log.i(TAG, "onBuildHeaders before load");
        loadHeadersFromResource(R.xml.preference_headers, target);
        Log.i(TAG, "onBuildHeaders after load");
    }
*/
    public static class UserPreferencesFragment extends PreferenceFragment {
        private final static String TAG = "UserPreferencesFragment";

        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            Log.i(TAG, "fragment onCreate");
            addPreferencesFromResource(R.xml.preferences);
        }
    }
}    

Thanks to everyone who helped me find the error of my ways.

PLA