Android :: Custom Filtering Using ArrayAdapter?

Apr 27, 2010

I'm trying to filter my ListView which is populated with this ArrayAdapter:

CODE:............

However, when I call filter('test') on the filter nothing happens at all (or the background-thread is run, but the list isn't filtered as far as the user conserns).

Android :: Custom filtering using ArrayAdapter?


Android :: ListActivity ArrayAdapter Filtering With No Physical Keyboard?

May 12, 2010

I have a ListActivity based on an ArrayAdapter with setTextFilterEnabled set to true. This works fine on a device with a physical keyboard. When I start typing something on the keyboard, the items get filtered.My question is how to get the same behavior on a device with no physical keyboard?

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Android :: Removing Items From ListView/ArrayAdapter Doesn't Work After Text Filtering

Jul 10, 2010

I have an Android ListView, backed by an ArrayAdapter. When the user clicks on an item in the list, that item is removed. This all appears to work fine, you can click on each item until there are no items left.

However, it all goes wrong once text filtering occurs. Once the list has been filtered once, even if that filter is cleared, all subsequent calls to remove(Object) on the adapter fail to remove the item from the visible list. I've tried calling ListView.clearTextFilter() before removing the item, calling it after removing the item, and not calling it all. There's no difference.

I've looked through the source for ArrayAdapter.java and it seems that once filtering is set, the adapter uses one collection to respond to queries but updates a different one. I can see no obvious way to get it to revert its behaviour. Is this a bug or am I missing something?

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Android :: Update A Progress Bar Which Is Set Inside Custom ArrayAdapter

Feb 25, 2010

I have a problem updating a progress bar.

First i have a custom adapter in which i create a row for each item with a textview and a progress bar. (i have a item_row.xml in where i define the layout for each row)

CODE:...............

Ok, now i have a service downloading in background data from an external API, and i want when to update the progress bar every second with the progress of the download.

For that, i have a timer task made with a handler (reference)

But the problem is how can i access again to the progress bars created in my adapter in order to update the progress?

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Android :: Use An ArrayAdapter (no Subclassing) With A Custom View To Display Data?

Nov 3, 2010

Often, a simple of ArrayAdapter does what I want and during early development I will provide the android.R.simple_list_item_1 for the view id required by the ArrayAdapter constructor. Is it possible to provide a customized view which is based on the android.R.simple_list_item_1 to the ArrayAdapter constructor?

I do not fully understand Android's 'include' functionality, but what I would like to do is something like:

Define a new TextView based on customizing the android.R.simple_list_item_1.
(I have no idea what the valid syntax would be)

code...

Reference my customized TextView. I assume that something like this would go into my layout directory. Then in my code I would do something like:

LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.id.MyTextView, null);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, view.getId(), myArrayOfData);

Is this possible and if it is, what is the appropriate syntax to accomplish what I want?

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Android :: Custom Android Keyboard Input Filtering

Nov 24, 2009

I have an EditText that is to collect input for a basic calculator. I want to bring up the numeric keyboard, and thus I set android:inputType to numberDecimal|numberSigned. Problem is, the EditText filters out all characters that aren't numeric, such as "(", ")", "/", "*". I have tried overriding this behaviour by setting a custom InputFilter which filters nothing out, but it seems to have no affect on the EditText. Is there any way for me to display the numeric soft keyboard without the filtering behaviour?

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Android :: Way To Extend An ArrayAdapter?

Apr 10, 2009

I'm running into difficulties overriding an ArrayAdapter to be displayed in a ListActivity. The ArrayAdapter is filled asynchronously. What I'm trying to do is add a special "sentinel" object that sits at the beginning of the list to show the progress of the computation. Ultimately this may be a progress bar, but right now I am just using a TextView as a placeholder. The problem is that the sentinel seems to get inserted multiple times into the list - not just once at the beginning. It *seems* to be appearing once per "page" of list data (so if 8 list items fit on the screen, my sentinel appears as the 1st, then 9th, then the 17th, etc..), but that interpretation may not be accurate. While maybe not how ArrayAdapters were intended to be extended, I thought something like this should work by simply overriding getView() to show my custom TextView for index.

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Android :: Put A Vector Into My Arrayadapter?

Sep 3, 2010

I have the current code...

How would i put a vector into my array_spinner?

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Android :: Bug With NotifyDataSetChanged() In ArrayAdapter ?

Jun 16, 2010

I have a strange problem with one of my ListActivity. I have overrided the default ArrayAdapter in order to customize my list. I have then filled the adapter with an ArrayList.

If I insert an element on the list and then call notifyDataSetChanged() on the adapter everything works fine.

But if I insert an element at the END of the list and then call notifyDataSetChanged(), the new element doesn't appear ...

And finally if I override getCount() on my adapter like this :

CODE:...............

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Android :: Possible Databinding When Using A ArrayAdapter?

Apr 19, 2010

I need some simple databinding for a Spinner. I want to display 2 items for each dropdownitem.
So when the user clicks the spinner I get a list like code...

I understand this can be done when using a Cursor, according to the databinding info on android dev. Like code...

However, I don't get my data from a database, so I don't use a cursor, I use a ArrayAdapter. Unfortunately it looks like there is no support for databinding with this adapter.

Is there a way to do this?

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Android :: Why Can't Add - Remove Items From ArrayAdapter

Aug 13, 2010

I am using an ArrayAdapter<CharSequence> to populate the items to list in a android.widget.Spinner. That works all fine. But now I want to keep the list of items dynamic, i.e. I want to be able to add/remove items from the selection list at runtime. However, when I call adapter.add(item) or adapter.remove(item) I always get a UnsupportedOperationException, even though the Javadocs of the ArrayAdapter class describe these two methods as to be usable for exactly that intended purpose.

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Android :: ArrayAdapter Of Dynamic Size

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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Android :: How To Select Item From Arrayadapter?

Sep 18, 2009

i m having Array Adapter it displays list views normal whenever i click on that particular item from the list it doesn't works.can u tel me how to solve this.

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Android :: Subclass Of ArrayAdapter Not Working

Nov 4, 2009

I have subclassed ArrayAdapter to set the color of text to RED if the string does not contain 100%, this has been added to a ListView. The problem is that some of the rows show as red when they contain 100%.

CODE:.....................

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Android :: Flashing Element In ArrayAdapter

Sep 12, 2010

I have an ArrayAdapter in my activity, and when a certain event occur, I'd like to make a specific element flash, or have it highlighted in some way for a couple of seconds. Is there a way to do that?

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Android : Add Item To Spinner's ArrayAdapter?

Mar 24, 2010

I had a EditText , a button and a spinner . When click the button , the spinner will add a new item with name you entered in the EditText. But here is the question, my adapter.add() method seems doesn't work...here is my code...

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Android :: Gmail And Filtering?

Jun 20, 2010

i came from a blackberry so learning here..but i know how to set up my pop email account to go through gmail and get sent to my phone, however can i filter only certain emails to my phone? i really dont want them all going to my phone as i read most via computer, i only want ones coming from certain contacts being sent to my phone.

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Android :: SMS App That Has Keyword Filtering?

Oct 31, 2009

I am looking for an all-in-one SMS app that can filter incoming messages based on words and phrases in the message. The reason being that I have monitoring systems at work that send SMS alerts and sometimes the alerts are just FYI, not OMG's

So anyways, right now I have a Hero, so I use Handcent for the replacement of the stock app until it is fixed and SMS Firewall to filter incoming messages and do the alerting. Being a 2 part solution it works very well, but I was curious if anyone has tried anything that has it all in one.

I have tried a few of the apps out there and none seem to work right.
Here's what I tried without success
aFirewall (didn't seem to filter properly)
SMS manager (can't remember what was wrong)
SMS Guard (kept getting a force close when a message came in)
PandaFirewall (didn't filter anything properly when I tested)
GSMS (force close when trying to view inbox)

I was going to try UltimateSMS, but it appears to have been removed from the Market.

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Android :: Filtering Incoming SMS

Jan 28, 2010

I have a problem, I need some hints. I need to have my app receive certain kind of sms (say meant for my app). is it possible?Is it possible to receive all the sms in my app rather than default sms app? How to configuration my app to receive sms?please help with some links and stuff.

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Android :: Notifying An ArrayAdapter Of Changes When Closing A PreferenceActivity

Dec 12, 2009

I have a ListView that has some minor visual preferences that are set in a PreferenceScreen. These preferences are simple booleans to show or not to show some specific TextViews on each item in my ListView.

Anyhow, when these preferences are changed, I need to notify my ArrayAdapter that the data has changed in order to get the list redrawn. However, doing this via an OnSharedPreferenceChangeListener wouldn't really be optimal because there are several preferences that you can change, that would cause an unnecessary amount of updates to the ArrayAdapter.

So, to the question: How can I identify when my ListActivity has occurred on the screen after closing my PreferenceActivity, which I then could use to check for changes in the preferences, and only then notify the ArrayAdapter.

The ArrayAdapter being an inner class of my ListActivity, which is set as a ListAdapter.

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Android :: Override Filter In Droid's ArrayAdapter?

Apr 19, 2010

I have an ArrayAdapter wrapped around an ArrayList of custom objects. I'd like to write a custom filter for that adapter so that when I call getListAdapter().getFilter().filter("abc") the list will get filtered by an arbitrary transformation of "abc".

I thought I would just try to override ArrayAdapter.getFilter(), but that requires I re-implement the private ArrayAdapter.ArrayFilter which requires access to a bunch of ArrayAdapter's private instances.

What's the simplest way to do this?

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Android : Need To Create Dynamic ArrayAdapter / Spinner

Sep 14, 2010

I need to create an ArrayAdapter and a Spinner that are totally dynamic and have nothing to do with the layout file.

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Android : Avoid Leaking Context In ArrayAdapter

Sep 28, 2010

I read the Avoiding Memory Leaks article with interest, and am concerned about danging references to the context object. I have a class like the following.

CODE:.........

Is it a problem to have a reference to a LayoutInflater object, since it must be using the context object somehow? Is there a better design pattern for what I'm trying to do here? (Use the context only to initially inflate the XML; from then on just use the View that's passed in to getView)

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Android : Avoid Re-drawing All Views In An ArrayAdapter?

Mar 25, 2010

I have an ArrayAdapter powering a ListView. I would like to change the data behind the ArrayAdapter and update the ListView's. Sounds like notifyDataSetChanged(); would be exactly what I am looking for, but it updates the entire ListView, and I would prefer to update on a row-by-row basis.

Is there a way to do this with ArrayAdapter, or do I need to manage my data some other way if I want this functionality?

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Android :: Contacts From 1.5 And 1.6 - Filtering Out Trash

Feb 24, 2010

I am trying to write a clean bit of code that can list the people in a 1.5/1.6 Contacts data store, and I do not see how I filter out the cruft that Google throws in (ad hoc "contacts" literally addressed by other apps and stored, for some reason, in the contact list without a clear means of discerning them from the real people the user cared to enter - the ones that would appear in the contacts app). I see that in 2.0 or so, "IN_VISIBLE_GROUP" is added as a field which seems to differentiate these versions, but what existed to accomplish this before that time? Here is my code which works in 2.x and fails to keep the chaff out in 1.x, as the selection parameter is unsupported:
final String[] proj = new String[] { Contacts.People._ID, Contacts.People.NAME };
final String selection = Build.VERSION.SDK_INT < 5 ? null : ContactsContract.Contacts.IN_VISIBLE_GROUP + "=1";
Cursor people = context.getContentResolver().query( Contacts.People.CONTENT_URI, proj, selection, null, Contacts.People.DEFAULT_SORT_ORDER);
if (people != null) { final int personIdColumn = people .getColumnIndexOrThrow(Contacts.People._ID);
final int nameColumn = people .getColumnIndexOrThrow(Contacts.People.NAME);
while (people.moveToNext()) { if (Thread.interrupted()) { people.close();
outputList.clear(); throw new InterruptedException();
} long personId = people.getLong(personIdColumn);
String name = people.getString(nameColumn);
if (name != null) { outputList.add(new Contact(personId, name));
} } // clean up cursor people.close();
}

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Android :: ListView Not Updating After Filtering

Aug 5, 2010

I have a ListView (with setTextFilterEnabled(true)) and a custom adapter (extends ArrayAdapter) which I update from the main UI thread whenever a new item is added/inserted. Everything works fine at first--new items show up in the list immediately. However this stops the moment I try to filter the list.Filtering works, but I do it once and all of my succeeding attempts to modify the contents of the list (add, remove) don't display anymore. I used the Log to see if the adapter's list data gets updated properly, and it does, but it's no longer in sync with the ListView shown.

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Android :: Filtering SimpleCursorAdapter ListView

Feb 27, 2010

Since the query that comprises my ListView basically gets the rowID, name, and a third column from my databases's table, I want to be able to filter the cursor based on the partial value of the name column. However, I am uncertain of whether I can do this directly from runQuery without expanding my DB class since I want to filter the existing cursor, or will I have to create a new query function in my DB class that partially searches my name column, and if so, how would I go about creating the query statement while using the CharSequence constraint argument in runQuery?I am also concerned about the performance issues associated with trying to run multiple queries based on partial text since the DB table in question has about 1300-1400 rows. In other words, would I run into a bottleneck trying to filter the cursor?

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Android :: Anisotropic Filtering On Textures?

Aug 18, 2010

I'm just learning OpenGL ES on Android, and I am trying to get some kind of anisotropic filtering on textures. I want to increase the size of a sprite, with some kind of interpolation, instead of this "nearest-pixel-interpolation".

Is there anything like this in the OpenGL ES standard or do I have to make one texture for each size?

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Android :: Audio Filtering In System?

Sep 27, 2010

Is there a way to filter audio in android system? I am interested to get only the audio of a fixed frequency.

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Android :: Filtering Sensors Noise?

May 21, 2010

I'm programming an Augmented Reality application. It's development it's in an advanced state but I can't place the icons on the screen so still as anothers programs does (Layar, in example). This is because of the continuous variations of the sensors. I've tried the three modes of the sensors (FAST, GAME, and NORMAL) but I only get them to move more or less fast. The shivering is the same at different speed.

Finally I thougth I could reach my goal with a digital filter, averaging historical values. But again the icons continues moving, specially the most far placed ones (in the z axis). Please, could some one help me with some clue?

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