Android :: How To Work With Checked ListViews

Oct 11, 2010

I wish to work with checked list views wherein only one item can be selected at a time. Some queries related to this:

1) Is it advised to work with CheckedTextView as the ListView items, or a combination of CheckBox and TextView?

2) If using CheckedTextView, the text comes first and the checkbox appears on right edge. Is it possible to make the checkbox come on the left of the TextView?

3) How can I make one of the items as checked in onCreate()?

I am using array adapter and calling setAdapter() to populate list.

Android :: How to work with Checked ListViews


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Android :: How Do ListViews Exactly Work

Apr 25, 2010

I'm trying to figure out how it's been designed. How it holds its items? How do I get a hold of the scrolling container? How can I know it's exact scrolling position? How can I scroll it to an exact position?

I want to have all the current benefits the ListView provides plus detailed scrolling control... How about animating from x to x+100 scroll position?

Maybe I need to create my own ListView? Where do I begin?

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Android :: Having Two Listviews In Two Listactivities Didn't Work

Apr 18, 2010

I guess my previous question wasn't clear enough ( http://stackoverflow.com/questions/2549585/android-failed-to-setcontentview-when-switching-to-listactivity ), so I explain as follows.

In my app I have two listactivities which uses two different listviews:

CODE:.......

As required by android, listview must have an ID which is exactly "@android:id/list". If I set the listview in both listview1 and listview2 with the same ID, then they will end up using the same format of listview, which is not what I want. But if I set one of the IDs to be sth like "@+id/listview2", android gave me the error: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'

My listview is sort of complicated, customed list with image icons and text, so in my code, I also extended the ListAdapter:

CODE:........

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Android :: Schedule Heavy Work For Later Display For Listviews?

Mar 26, 2010

I have a listview with 200 items. I use a custom view for each row. There is a code that takes some time to calculate, and because of this the list hangs out on scrolling and loads in slow (2-3sec). I have subclassed SimpleCursorAdapter, and using Filterable and SectionIndexer. I have in mind to show initially the name of the record, and put in a thread the calculation, and will show up later when it's done. How do I push back some work, and later update the listview to include the calculated data? This should show up on fly without user interaction.

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Android : Multiple ListViews - OnClick By Finding Out Which ListViews Is Clicked

Nov 7, 2010

I am not very familiar with android coding so try to help me on a easy way.

The problem:
I have 2 Listviews and a onClick event handler.
How can i find out on which listview the user currently clicked?

public void onListItemClick(ListView l, View v, int position, long id) {
'Approach: if listview1 is clicked then FUNCTION1() else FUNCTION2()'}

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Android :: Getting Checked Items From ListView Of Checkboxes

May 6, 2010

Given a listview that shows checkboxes next to a list of people, I want to be able to get the names (in Strings for example) of the people who are checked. I have set my listview mode to allow for multiple checks.

getCheckedItemPositions()

Will get the positions but I can't figure out how to iterate over the listview to get the names. Also Eclipse tells me that getCheckItemIds is not a valid method for ListView.

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Android :: Checked In Text / ListView Not Working

Aug 14, 2010

I have a ListView that just contains a CheckedTextView. I have a very simple CursorAdapter that populates CheckedTextViews. When I click on an item, I can see that I am responding to the correct row, store the value in my model and the CheckedText gets checked. However, when I scroll down and then back up again, while I see that the model contains the correct value (in #bindView), calling #setChecked on the CheckedTextView has no effect. Ie All items are unchecked. Code...

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Android :: Check A Particular Item In A Checked ListView?

Oct 11, 2010

I am using a ListView in which only one item can be checked at a time.

This is my custom list_row.xml :

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

I populate the list in onCreate() using a normal array adapter :

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

When the list is displayed, I want to have, say the 5th item, in the list as Checked. How can I go about doing this? I know CheckedTextView has a function called setChecked(), but how can I get my 5th item from the list to apply this function on it?

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Android :: Checkbox In List Being Checked Unexpected

Feb 16, 2010

I have list of checkboxes in list binded by Custom simpleCurserAdapter. in my Custom simpleCurserAdapter ive override the newview and binview with my modifications. ive managed somehow to do multichoice.. wierd thing after i delete any item from my list , the first item's checkbox is being checked all of a sudden.. how does that happen? how can i solve it?

code: my curser SimpleCursorAdapter class:

CODE:......

I couldnt find another way of doing this, but this is how i set listeners to my checkboxses

CODE:.....

Now this is code part from the ListActivity class which desbribes the button which deleting the checked Box items

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

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Android :: Handcent Deleting Texts / Only Keeps 10 Checked Settings

Sep 9, 2010

Basically it is deleting my oldest text from the particular person when I receive a new text from said person. Seems 10 texts is the threshold.I didn't make any changes and this started occurring.

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Android :: Getting A RadioGroup To Redraw With Correct Button Checked

Oct 7, 2010

I have a RadioGroup view inside a LinearLayout. The radio buttons are added from dataList. If I call the code below from inside onCreate, the correct button is checked. However the dataList can get updated from time to time and after that happens I call this code again, without destroying the Activity. After that, the view is redrawn but no button is checked. I suspect the RadioGroup checked-button bookkeeping is getting confused by the removeAllViews call. Any ideas what might be going wrong?

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Android :: Retrieve Checked CheckBoxes's Items In Listview

Feb 14, 2010

Ive got ListActivity and i am using custom CursorAdapter. in each item of the list ive got also checkbox. now i have in my list screen a perm button, when you press on it, it should find all the checkboxes which are 'checked' and do some operations on the item which it's checkbox is 'checked'. how can i retrive all the checked ones? ive done focusable:false, so i can use OnClickListener, but i dont know how farther then
this..

some code:.............

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Android :: Wrong Item Checked When Filtering ListView

Mar 21, 2010

The problem is that when I filter the list the entries switch position in the list view. Take for example three entries: 'A', 'B' and 'C' where 'C' is checked beforehand (i.e. the entry at position 3 in the list). When I type a 'C' on the keyboard, only the 'C' entry is displayed (as intended). Now 'C' is not checked anymore, since the entry has moved from the checked position 3 to the unchecked position 1 in the list.This behavior leads to some not very welcome effects in the app. Is there a way to "move the selection with the filtering", i.e. bind the checked state to the entry and not to its initial position in the list? Or do I need to find a new approach?

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Android :: Want To Display Checked Item Of List View

Feb 13, 2010

I have a list view having several items and it is multichoice list. I want to display the checked item of list view. how i can do this.can anyone help me?

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Android :: Set Checked Boxes For A CheckBox-list Dialog?

Oct 30, 2010

I've got a dialog which shows a list of checkBoxes. I'd like to set different boxes checked each time the dialog is showed. But that only works the first time.. I want it work every time the dialog is showed!

This is my code...

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Android :: How Do I Make Checkbox In Checked TextView Be Left Aligned?

Jun 25, 2010

I am trying to use R.layout.simple_list_item_multiple_choice with ListView. CheckedTextView is used in mple_list_item_multiple_choice.xml, but how can I make the checkbox be left aligned instead of right aligned?

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Android :: Save State Of Checked Item In ListView Having Checkbox

Sep 29, 2010

I'm new to android, please help me how to save the state of checkbox,

i.e.

I've ListView with checkbox, three textview and again checkbox. I wish to save the checked state of item(s),

how to save the state of checkbox.

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Android :: Show Another View On Top Of Existing ListView After Checkbox Checked

Jul 1, 2010

Currently I have a list view within it each row has a checkbox attached. I would like that once any checkbox is checked, at the bottom of the screen a view displays, and once none of the checkboxes are checked, the view automatically disappeared. Possible to do this?

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Android :: Lost Checked State Of Check Box In ListView While Scrolling

Oct 7, 2010

I'm facing problem in scrolling. I've 20-25 items in my List, if i checked first check box, scroll down, then come up, my checked status lost (becomes unchecked), in cursor adaptor. If i use base adaptor problem is resolved but major issue with base adaptor is performance, if my list goes beyond the 100 items.

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Android :: Change Icons Of Checked And Unchecked For Checkbox For Droid

Jul 7, 2010

Instead of having a check mark for the icon, I want a custom star (I have checked and unchecked icons). Can this be done through a property? Or must I declare a custom widget that derives from Checkbox?

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Android :: ListViews And CheckBoxes

Sep 7, 2010

I have a ListView, and within each list item I have some TextViews and a CheckBox. When I check a CheckBox and my onCheckedChangeListener fires, everything works as it should. However, random other checkboxes get checked once one is checked. Here is an example.

If I click on the first CheckBox:
8 is checked.
15 is checked.
21 is checked.
27 is checked.
33 is checked.
41 is checked.

Then if I scroll all the way up, none are checked until 6. The next being 13.

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Android :: SQLite And ListViews?

Nov 18, 2009

Firstly, I have found many examples of how to grab data from a db and place it into a list, however this seems to be all for ListActivites.

My list is part of the UI and therefore I can't use a ListActivity because it does not consume the whole screen (or can I?).

This is the UI:

CODE:........

So, from what ive read I need to grab the data from the db, then place it into some sort of array then use an array adapter to fill the list view. Is that correct? If so, is there some sample code because all I can find is code releated to ListActivites.

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Android : What Is Best Way To Do Multiple Listviews

May 15, 2010

I am writing a software that i have to drill down on content a lot. For example when the program starts a listview is displayed. When user clicks on an item, then a second listview must be displayed. For example:

Select Continent > Select Country > Select State > Select City > Select Address

What is the best way to do this (less memory, faster, easier to code etc)? To create multiple listviews with multiple adapters? Or 1 listview with multiple Adapters? Lists are loaded from an external XML File.
So far i am creating a new adapter and setting it to the listview. How do i create a second listview and after clicking on 1st listview displaying the second one, with animation. Any examples? Extend my class to ListActivity or Activity?

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Android :: Setting Initially Checked CheckedTextViews In ListView For ChoiceMode - MultipleChoice

Aug 9, 2010

I am having a really difficult time trying to work with android's ListView multipleChoice mode. Here is what I am trying to do:

I have a "players" button in a game setup screen. When this is clicked it opens another activity with a multipleChoice ListView of all the players in the database in CheckedTextViews. I have this working properly and when you click on a player they will be added or removed from the game via a query to the game_players table.

The problem I am having is in setting up the ListView so that the players that have already been added to the game get checked initially when the activity opens.

I have tried to do this by iterating over the entire list in the ListView activity but this doesn't work because the Views that are not currently visible can't be accessed to check.

So now I'm trying to do this in my extended SimpleCursorAdapter in bindView but I can't even get this simple code to work:

CODE:.........

It correctly sets the player's name with setText(), but I can't get any of the boxes to check in bindView. Is there somewhere else I should be doing this or am I just doing it incorrectly?

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Android : Current Latitude And Longitude Checked The Gps Enabled It Shows False

Sep 17, 2010

I have android HTC mobile os version - 1.6 . I have GPRS setting in my mobile. I can access internet through mobile. But in my programme to findout my current latitude and longitude i checked the gps enabled it shows false.

My code is below

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

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Android :: Mutiple Listviews With One Only Scrolls

Aug 13, 2010

Hello, I need to put several listviews inner a LinearLayout. The Listviews should be wrap content to adapt the listview to their items. I need have one only scroll with which I can scroll all the listviews. I know that i can't use a scrollview because the listviews have their own scroll (but i don't need the scrolls of the listviews because i have them in wrap-content). I thought maybe puting the listviews inside the LinearLayout I will hadn't problems with the scrollview, but it didn't work, the LinearLayout was fixed to the screen, the scrollview didn't appear and the listviews ended scrollable. Without the scrollview if i have the list in wrap-content, their shown properly but i haven't any scroll and i can't see the lisviews below the screen. Really i have had this bug for one month and i haven't found any solution,

My code:

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

JAVA

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

How you can see i create the lisviews dinamically and i put indside the layout with a secttion header. if you have some doubt ask me I need find a solution soon.

Sample Image: http://www.freeimagehosting.net/image.php?6dea1468bd.png

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Android :: Show Many Listviews In One Activity

Aug 16, 2009

I want to show many listviews in one activity. Something like

Textview Listview TextView Listview ..........

Every listview has different type of adapter. For this, I made the activity class like:-

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

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Android :: Views - ListViews And Adapters

Apr 20, 2009

Just looking at options for data updating affecting items in a ListView and have hit a few issues/queries.

There seems to only be notifyDataSetChanged() and notifyDataSetInvalidated(). While I could use notifyDataSetChanged() I am most likely in my case to have the scenario where additional data has been added and it seems inefficient to say the data has changed, which can only be resolved by calling getCount() and then getView() for all displayed items where knowing the data has been appended would just require adjusting the scrollbar. Is there some way to achieve something similar to this as the market seems happy populating dynamically in a manner that seems to reflect my desired behaviour (unless it just refreshes it all that fast).

Next question is the situation where the data behind just one item has changed. For instance I may wish to download icons in a background thread, but display available information with a placeholder icon. The best idea I've had so far is to store a map of indexes and views in my adapter which I can check against then call getView directly myself to have the view recycled with the new data. I'd just need additional logic to handle removing the map when the view gets destroyed or when it's recycled in getView. Either a bi-directional map (do we have one of those?) or two maps. Is the above likely to be my best approach or is there something built-in/better to get it done.

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Android :: REST And Listviews Refresh?

Jul 22, 2010

In my app, I have different activities with listviews. The datas come from a server with a REST method, and it's only done once, when I start the application.

The pattern that I'd like to set is to precharge all the listviews with the JSONs that I already have in local, and in parallel, launch a thread that get the new JSONs files with my REST methods, and then update the listviews.

For now, when I start the app, I parse my JSONs files, and build all the lists of objects. I access them later in a static way, from my lists adapters.

So I would like to know the best way to launch this REST thread, and update the listview. Should I use AsyncTask ? A service ? and then, when I update my local JSONs, I have to re-parse them, updates the lists of object, and call in my adapters NotifyDataChanged ?

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Android : Two ListViews In One Activity - Screen?

Mar 22, 2010

Can I have two ListViews on a single ListActivity? I have built the xml file easy enough, but the code around ListActivity, setListAdapter(), getListView() and the like, all seem to be designed around one ListView per activity. How to get 2 ListViews in one screen?

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