Give preferences in the screen

First of all create the preference.xml file and enter in it.


<?xml version="1.0" encoding="utf-8"?>
<!-- This file is /res/xml/flightoptions.xml -->
<PreferenceScreen
xmlns:android="http://schemas.android.com/apk/res/android"
android:key="using_categories_in_root_screen"
android:title="Categories"
android:summary="Using Preference Categories">
<PreferenceCategory
xmlns:android="http://schemas.android.com/apk/res/android"
android:key="meats_screen"
android:title="Meats"
android:summary="Preferences related to Meats">
<CheckBoxPreference
android:key="fish_selection_pref"
android:title="Fish"
android:summary="Fish is great for the healthy" />
<CheckBoxPreference
android:key="chicken_selection_pref"
android:title="Chicken"
android:summary="A common type of poultry" />
<CheckBoxPreference
android:key="lamb_selection_pref"
android:title="Lamb"
android:summary="Lamb is a young sheep" />
</PreferenceCategory>
<PreferenceCategory
    xmlns:android="http://schemas.android.com/apk/res/android"
android:key="meats_screen"
android:title="Foods"
android:summary="Preferences related to Meats">
<CheckBoxPreference
android:key="tomato_selection_pref"
android:title="Tomato "
android:summary="It's actually a fruit" />
<CheckBoxPreference
android:key="potato_selection_pref"
android:title="Potato"
android:summary="My favorite vegetable" />
</PreferenceCategory>
</PreferenceScreen>


And make a java file preferencescreens.java of the following.


package org.apache.android;


import android.os.Bundle;
import android.preference.PreferenceActivity;


public class preferencescreens extends PreferenceActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preference);
}
}

Now make an main.xml file



<?xml version="1.0" encoding="utf-8"?>
<!-- This file is /res/layout/main.xml -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView android:text="" android:id="@+id/text1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>


make a main.java file


package org.apache.android;


import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.TextView;


public class mainActivity extends Activity {



private TextView tv = null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tv = (TextView)findViewById(R.id.text1);
setOptionText();
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.mainmenu, menu);
return true;
}


@Override
public boolean onOptionsItemSelected (MenuItem item)
{
if (item.getItemId() == R.id.menu_prefs)
{
Intent intent = new Intent().setClass(this, preferencescreens.class);
this.startActivityForResult(intent, 0);
}
else if (item.getItemId() == R.id.menu_quit)
{
finish();
}
return true;
}


@Override
public void onActivityResult(int reqCode, int resCode, Intent data)
{
super.onActivityResult(reqCode, resCode, data);
setOptionText();
}




private void setOptionText()
{
SharedPreferences prefs = getSharedPreferences("Sharedpreference", 0);
String option = prefs.getString(this.getResources().getString(R.string.selected_flight_sort_option),
this.getResources().getString(R.string.flight_sort_option_default_value));
String[] optionText = this.getResources().getStringArray(R.array.flight_sort_options);
tv.setText("option value is " + option + " (" + optionText[Integer.parseInt(option)] + ")");
}
}