The preference list shows only the first item

Question

I am developing PreferenceActivity with custom Preference views. My problem is that I created a view with a ListView and it only displays the first item. I submit my code and image: http://imageshack.us/photo/my-images/545/sc20120307161530.png/

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XML:

 <?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" > <PreferenceCategory android:key="player_settings" android:title="@string/settings_player_config" > <EditTextPreference android:defaultValue="@string/settings_player_default_name" android:dialogMessage="@string/settings_player_summary" android:dialogTitle="@string/settings_playersname" android:key="player_name" android:summary="@string/settings_player_summary" android:title="@string/settings_playersname" /> </PreferenceCategory> <PreferenceCategory android:key="volume" android:title="@string/settings_volume" > <com.battleship.preferences.SeekBarPreferences android:defaultValue="50" android:key="volume" android:title="@string/settings_volume" /> </PreferenceCategory> <PreferenceCategory android:key="shine" android:title="@string/settings_shine" > <com.battleship.preferences.SeekBarPreferences android:defaultValue="50" android:key="shine" android:title="@string/settings_shine" /> </PreferenceCategory> <PreferenceCategory android:key="themeTitle" android:title="@string/settings_group_themes" > <com.battleship.preferences.ListPreferences android:key="theme" /> </PreferenceCategory> <PreferenceCategory android:key="fontsTitle" android:title="@string/settings_group_font_size" > <com.battleship.preferences.ListPreferences android:key="font" /> </PreferenceCategory> </PreferenceScreen> 

User List:

 package com.battleship.preferences; import com.battleship.R; import android.content.Context; import android.content.SharedPreferences; import android.media.AudioManager; import android.preference.Preference; import android.util.AttributeSet; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.RadioButton; import android.widget.RadioGroup; import android.widget.RadioGroup.OnCheckedChangeListener; import android.widget.Toast; public class ListPreferences extends Preference implements OnCheckedChangeListener { public ListPreferences(Context context) { super(context); } public ListPreferences(Context context, AttributeSet attrs) { super(context, attrs); } public ListPreferences(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } @Override protected void onClick() { super.onClick(); Toast t = Toast.makeText(getContext(), "HOLA!", 3); t.show(); } @Override protected View onCreateView(ViewGroup parent) { String[] contentString = new String[3]; if (getKey().equals("theme")) { contentString = new String[] { (getContext().getString(R.string.settings_theme_default)), (getContext().getString(R.string.settings_theme_black)), (getContext().getString(R.string.settings_theme_white)) }; } else { contentString = new String[] { (getContext().getString(R.string.settings_font_big)), (getContext().getString(R.string.settings_font_medium)), (getContext().getString(R.string.settings_font_little)) }; } ListView listView = new ListView(getContext()); ArrayAdapter<String> array = new ArrayAdapter<String>(getContext(), android.R.layout.simple_list_item_single_choice, android.R.id.text1, contentString); listView.setAdapter(array); listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); return listView; } private void updatePreference(int intRadio) { SharedPreferences.Editor editor = getEditor(); editor.putInt(getKey(), intRadio); editor.commit(); } } 

Answer 1

Do not you hate when everyone is trying to tell you that you should not do this, and not just answer your question? The ability to dynamically generate content is critical to the flexibility of the application, I fully know what you need.

This will work if all the items in the ListView are about the same height (inapplicable parts are omitted). The order is important, try to save it as I pointed out:

 import android.view.ViewGroup.OnHierarchyChangeListener; public class ListPreferences extends Preference implements OnCheckedChangeListener, OnHierarchyChangeListener { private ListView listView; private View thisView; private int listHeight = 0; @Override protected View onCreateView(ViewGroup parent) { this.setLayoutResource(R.layout.listview_preference_layout); thisView = super.onCreateView(parent); listView = (ListView) thisView.findViewById(android.R.id.list); listView.setOnHierarchyChangeListener(this); String[] contentString = new String[3]; if (getKey().equals("theme")) { contentString = new String[] { (getContext().getString(R.string.settings_theme_default)), (getContext().getString(R.string.settings_theme_black)), (getContext().getString(R.string.settings_theme_white)) }; } else { contentString = new String[] { (getContext().getString(R.string.settings_font_big)), (getContext().getString(R.string.settings_font_medium)), (getContext().getString(R.string.settings_font_little)) }; } ArrayAdapter<String> array = new ArrayAdapter<String>(getContext(), android.R.layout.simple_list_item_single_choice, android.R.id.text1, contentString); listView.setAdapter(array); listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); return thisView; } public void onChildViewAdded(View parent, View child) { int childHeight = child.getMeasuredHeight(); if(childHeight > 0) { listHeight = listView.getAdapter().getCount() * childHeight; thisView.setMinimumHeight(listHeight); Log.i(TAG,"onChildViewAdded, done: "+listHeight+" "+childHeight); } } public void onChildViewRemoved(View parent, View child) { } } 

You will also need res / layout / listview_preference_layout.xml with the following:

  <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_gravity="fill_vertical|fill_horizontal|fill" android:gravity="fill" android:orientation="vertical" > <ListView android:id="@android:id/list" android:layout_width="fill_parent" android:layout_height="0dip" android:clipChildren="true" android:isScrollContainer="true" android:layout_gravity="fill_vertical|fill_horizontal|fill" android:layout_weight="1" android:choiceMode="singleChoice"/> </LinearLayout 

Answer 2

The problem is that you are trying to add a ListView as an element of another ListView. ListView is used in the PreferenceActivity layout. Therefore it does not work.

I do not understand why you do not want to go with the standard ListPreference solution. This is done just to present the user with a list of switches.

Answer 3

I would suggest creating a custom layout for the settings. Then you can create and customize your settings as you like. And using SharedPreferences from PreferenceManager.getDefaultPreferences() will allow you to save any changes as if you were using the usual Preferences solution.

As Malcolm suggested, you should probably follow common practices, rather than trying to do something complicated here.

Another suggestion does not use ListView. Instead, if you want all your views to display, manually add them to LinearLayout, which you then place in your preferences view.