Android :: Dynamic Content Of ListPreference
May 28, 2010
I want to put a ListPreference in my preference screen. But all the examples I have found in Internet the content are loaded out of a xml and I need that de options in the ListPreference are dynamic and not previously defined (in a xml).
I have mi preferences.xml in the folder xml/ of my project;
this is the code of preferences.xml:
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android
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Oct 2, 2009
When using a PreferenceActivity to do preferences, the PreferenceScreen can contain a ListPreference. A ListPreference has an array of keys and an array of values. But the PreferenceActivity only writes the values to SharedPreferences. How do I get the key of the item selected from the list? I would have thought this is pretty fundamental, especially if you want to translate your app.
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Mar 25, 2010
I'm using listpreference in my android app and getting my key values and all is well and works good (now that you guys have helped me) BUT - when my listpreference menus popup, they only contain a cancel button. Let's say the user is choosing between red, blue, and green. When the listpreference dialog first pops-up, the dialog only shows a cancel button. Because of that, the dialog disappears as soon as the user selects their choice. I would like it so that when the user chooses their setting, they see the radio button get highlighted and then they go ahead and click the ok button...but I don't have an ok button and can't figure out why.
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Aug 7, 2010
Is there a way to use a custom row for the ListPreference in the Android preference screen? Currently I populate the ListPreference like this, but I need more info (description) shown in the List
int count = items.size();
CharSequence[] entries = new CharSequence[count];
CharSequence[] entryValues = new CharSequence[count];
for (int i = 0; i < count; i++) {
entries[i] = items.get(i).toString();
entryValues[i] = String.valueOf(i);
}
langPref.setEntries(entries);
langPref.setEntryValues(entryValues);
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Mar 6, 2010
I have an XML preferences screen which is handled by addPreferencesFromResource. On it, there is a ListPreference, for which I want the summary to contain the current value of that preference. I think this would be a common requirement, as otherwise you could not see the present value of the preference without expending a click. I read that the summary field supports resource references, and I see that I can refer to preferences as android:summary="@+preference/prefname" in my ListPreference. Clearly this is why resource references would be supported in this field. However, when I try this, instead of the present value of prefname, the text "false" appears as the summary. Does anybody know how to display a current value without taking the seemingly ridiculous step of rewriting the entire (large) preference screen in Java?
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Sep 22, 2010
I'm trying to set a defaultValue to a ListPreference item. Here is an sample of my preference.xml file:
<ListPreference android:key="notification_delai"
android:title="@string/settings_push_delai"
android:entries="@array/settings_push_delai_human_value"
android:entryValues="@array/settings_push_delai_phone_value"
android:defaultValue="????">
</ListPreference>
The two arrays:
<string-array name="settings_push_delai_human_value">
<item>every 5 minutes</item>
<item>every 10 minutes</item>
<item>every 15 minutes</item>
</string-array>.............
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Jan 17, 2010
This is my first Android app (which is a soft keyboard, with dvorak layout) and so far it has gone pretty smoothly (either because or despite working from the sample code). I've had some problems (with special/swedish characters) that I've managed to take care of, but this problem I can't figure out how to solve..
But when I click the list item to edit it, i get an empty dialog (Title and button is shown right and with the text I set in the xml- file, but no list, screenshot: http://i49.tinypic.com/2501p55.png ). I can't see any problem with the program code (which isn't many lines..) or the xml (the arrays are generated by the Android utils in Eclipse and the preferences is a mix of auto and manual). You can see both Java code and XML here: http://pastebin.com/m4c52c3a2 (titles etc in Swedish..) (I've also tried a EditTextPreference item, which seemed to work fine..) I have also looked at the log/output using adb, and can't see any problems there either, so I have no idea onto how to solve this.
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Mar 21, 2010
I am resuing ListPreference for a setting which I store in the database. I do not want it stored in the preference file. How can I reuse ListPreference in such way that it does NOT save to SharedPreference file?
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Mar 23, 2010
I have a settings menu that pops up and in it is a listpreference type menu. It is associated with a settings.xml file where there are 'array-strings' within it. It all works good but I don't know how to retrieve the users preference. As an example, let's say the user picks a color (red, green, or blue). The list that I've made within my 'array-strings' contain the text red, green, and blue. Within my code, I would like to do something if the user has choosen red, something else if they choose blue, etc., etc. Would I use a 'case' statement or an 'if' statement? And most importantly, how would I retrieve the users preference - the key? (am I checking for a boolean?)
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Aug 27, 2010
I'm betting im missing one small thing. I've looked on the developer site and i've read some tutorials and i'm just not seeing what i did wrong. I'm trying to use a ListPreference to decide which sound to play on a button click. I have this at the top:
public String greensound;
Here's my OnClick code:
case R.id.green:
SharedPreferences prefs=PreferenceManager.getDefaultSharedPreferences(this);
greensound = prefs.getString("greensound", "gsone");
if (greensound == "gsone") {
mSoundManager.playSound(1);
} else if (greensound == "gstwo") {...................
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Oct 12, 2010
I have a ListPreference with the entries and entryValues correctly set. When I go in the prefernces activity and change the value it successfully works (I added a Toast to output the value after changing the option to test). But when I do the following to compare it, it always executes the else statment when I change it everytime, even like above when I changed the ListPreference and the value was "bluesky" it still failed to execute the correct if statement. Here's the code I use to check the value of the ListPreference in the onResume():
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this)
String backgroundPref = prefs.getString("backgroundPref", "");
if(backgroundPref == "bluesky"){
mainLayout.setBackgroundResource(R.drawable.bluesky);
Toast.makeText(getBaseContext(), "Blue Sky", Toast.LENGTH_SHORT).show();
}else if(backgroundPref == "sky"){
mainLayout.setBackgroundResource(R.drawable.sky);
Toast.makeText(getBaseContext(), "Sky", Toast.LENGTH_SHORT).show();
}else{
mainLayout.setBackgroundResource(R.drawable.sunsetscene);
Toast.makeText(getBaseContext(), "Sunset Scene", Toast.LENGTH_SHORT).show();
}
The Toasts are there so I can double check which statement gets executed, and it always seems to be the else one. Am I having a bad day and getting something wrong?
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Aug 28, 2010
I'm trying to use a ListPreference to decide which sound to play on a button click.
I have this at the top:
public String greensound;
Here's my OnClick code:................
I also tried removing the default value here it didnt seem to change anything but, should it be removed?
Here's my Settings.java:
package com.my.app;
CODE:...........
And here's my array's if that will help at all:
CODE:............
Here's a logcat that kinda looked possibly related:
CODE:..........
For those that might ask here's my DDMS > File Explorer > Data > Data > packageName > SharedPreferences This is what was in there:
com.my.app_preferences.xml:
CODE:...................
This all really confuses me more because...It looks like greensound does == gsone so.... I don't understand whats wrong its not even playing the default sound. and yes i've tested all this code without the listpreference code and they work great. I'm not sure what's wrong?
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May 30, 2009
ListPreference default is Single-Choice, how to create Multi-Choice?
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Jan 6, 2010
I want to have an element in my preference menu that does the following: Show a list of options. Many are selectable Maximum amount of options to be chosen 2. Possibilities I thought of: Doing a separated PreferenceScreen and showing options as checkBoxes but I don't know where to place the logic of max 2 options. Extending DialogPreference and doing it by hand.
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Mar 2, 2010
I am trying to put together a modal box with a scrollable list of checkable items and an OK and Cancel button at the bottom for the user to select filters from. It seems the simplest way to do things like this in Android is to reuse API components (widgets, layouts, etc) and the closest one I can find to this looks to be the ListPreference, which basically does exactly what I want (I can even work with storing the data in SharedPreferences). The problem is that I'm not launching this modal box from a PreferenceActivity, but rather will be launching it from either of two activities: a ListActivity and a MapActivity.
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May 14, 2010
I have created an account type using the AccountAuthenticator stuff as done in the SampleSyncAdapter tutorial. I am now trying to get account preferences working. I have added the line android:accountPreferences="@xml/account_preferences" to my account-authenticator and account_preferences.xml looks like so:
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<PreferenceCategory android:title="@string/alum_settings_title"/>
<CheckBoxPreference
android:key="sync_alum"
android:title="@string/sync_alum"
android:summaryOn="@string/sync_alum_check"
android:summaryOff="@string/sync_alum_nocheck"/>..................
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May 29, 2010
I'm setting out to create a settings activity for my app. I've defined a PreferenceActivity with a nice layout including a ListPreference object for the user to select a bluetooth device. I'm having trouble dynamically populating the list. I would like to populate ListPreference with values from an array adapter (which I'll create and populate with relevant bluetooth device names). If this were a spinner View, I could just call setAdapter(). However with the ListPreference object I can't figure out how to attach an adapter (findviewByID won't cast from View To ListPreference, so I can't even get a handle to the object). I would like to attach an adapter and then populate the adapter with values, which in turn would populate the ListPreference with values.
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Aug 10, 2010
I am trying to create a preference dialog window that allows the user to select more then one item in the list. Currently it only allows you to select one item. Is there an easy way to do this? I have looked all over the internet and not seen a way as of yet.
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Nov 24, 2010
How can i add, 4-radiobuttons and 2-checkBoxes in the same ListPreference in Android PreferenceScreen in android?
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Apr 24, 2010
Is it possible to define a ListPreference in Xml and retrieve the value from SharedPreferences using getInt? Here is my Xml code...
And I want to get the value with something like: int val = sharedPrefs.getInt(key, defaultValue).
At the moment I have to use getString and parse the result.
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Aug 12, 2009
This may seem like a stupid question but I need to be sure. I was wondering if it was possible to pro-grammatically change the Content Provider used when making a query given a Content URI. The reason being I need to know if it's possible to force the Calendar/Contacts applications to read from a different database via a different Content Provider temporarily while my application is running, so that I can reuse those applications to display my own data. Since the Content URI s are hard coded in each of these applications the only way it might be possible is if we could somehow temporarily change the Content Provider used for a given URI. I know this probably isn't possible, I just need to show it isn't. Could someone confirm this can't be done?
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Aug 29, 2010
on implementing a multi-select (check boxes) ListPreference on Android? Would I have to extend the ListPreference? Is there any classes already documented to do this?
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Mar 1, 2010
I am having a hard time understanding content providers. In the notepad example and others, the content provider never even declares its CONTENT_URI anywhere inside itself, yet the docs say to publicly declare this. It's declared in a different class. So when an activity queries a content provider with a CONTENT_URI, how does Android know which one I want. I see no link between a content provider and its CONTENT_URI declared in another class.
I also don't how to think about intents and content providers. I know that you don't call an intent on a content provider. But an activity queries a content provider without an intent, and an activity has a mimetype attribute in the manifest that would seem to tie it to a content provider.
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Mar 11, 2010
how can i create a custom content provider like contact content provider? i know how to create custom content providers but i want to integarte to device such a way that it canbe accessed by all application installed in that device.
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May 18, 2009
I am writing a app, which has sort of plugin framework. public abstract class AbstractService {public abstract AbstractService getInstance(String name)..
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Aug 7, 2009
I am new to this android stuff and SQLlite etc.I am going to log some numbers at a certain interval, and will put them into a dynamic histogram, by dynamic i mean that there will be a maximum number of samples in the histogram, the histogram and age stuff should be persisted either in db or plain file.For simplicity, I would like the samples to be stored in a blob type datafield, but i cannot se if this is possible. Alternative i could have another table with the samples Or I could simply have files with filename = name and content = samples.my concern might be unclear by now, but put simply, what is most effecient regarding power usage?
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May 18, 2009
I define once in my /xml/widget.xml the minwidth. but what can i do when I need to inflate different sizes from my widget layouts for 1 one my 3 widgets thats fine, but the last 2 widgets would just need one icon size, so they always need the width of 2 icons. also when I make minwidth smaller.. it fits with the other 2 widgets but the large widget come cutted.How to solve that. I cant believe to create a total new receiver and a new /xml/widget2.xml just for another size?!
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Jan 22, 2010
I want to create a TextView that will stretch the width of the screen and use a textsize that will keep the text on one line and fill the width. So bigger words would be smaller fontsize and smaller words would be bigger font size. I tried digging around in the docs under TextView but could not find what I needed.
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Oct 19, 2010
I need a gallery to be able to hold up to thirty custom views. These views need to added or removed whenever, they also need to be able to be display in a display bow beneath the gallery. How do I do this?I looked at the doc file for arrayadapter but it requires me to use a reference Id for each view I add, but each view is all java coded. Should I just use setId upon creation of the view and just throw that id into the array adapter, or is there a way to create one without using resource id's?
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Oct 27, 2010
I'm trying make a View that divide the screen in three sections. The first section should be 200dip high, the third section should be 50 dip high and the middle section should take the remaining place in the middle. Is there any way to implement it? I tried some ways but either it doesn't work or the app crashed.
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