Android :: AutoCompleteTextView And SimpleCursorAdapter
Apr 14, 2009
I am trying to connect a AutoCompleteTextView with a SimpleCursorAdapter, which narrows down the selection of a list of words, when the user starts typing.
Following some other posts here, I've come up with the following code, but it doesn't work. I defined a FilterQueryProvider runQuery() method for the SimpleCursor Adapter, but when I use the debugger in the code, the response from the ContentResolver.query((0 method call is null.
I think the problem is that there is no relationship between the CONTENT_URI and the SQL database, but I can't be sure.
CODE:.......................
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Apr 8, 2009
I have an application that involves reading a text dictionary file with about 7000 entries, and allowing the user to choose one of these. My first approach was to allow the user to select one of these by using a AutoCompleteTextView together with ArrayAdapter<String>. This works, but is very slow (~10 seconds to update the word list each time the user enters a character to narrow down the choice).
I was wondering how to rework it so that I could use a database using a SimpleCursorAdapter instead. In other words, to hope that a SQL database could provide a more efficient ordering and access for the elements. Is this the best way to do it? I've also seen several references to SQLiteDatabase, but don't know which one to use.
I found this code fragmant consisting of an extended SimpleAdapter. http://sacoskun.blogspot.com/2008/08...leadapter.html<http://sacoskun.blogspot.com/2008/08/autocompletetextview-with-simple...>
Unfortunately, this is not a complete worked out example. Could someone forward me a more complete example? I've found lots of code fragments, but no code that shows how to initialise the SimpleCursorAdapter contents, or how it works together with the AutoCompleteTextView.
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Aug 13, 2009
Is it possible to add an AutoCompleteTextView to a widget? Every time i've tried, it gives me a "Problem loading widget" error.
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Jun 25, 2009
I am trying to pull data from a cursor which is initialized as follows:
Uri inboxUri = Uri.parse("content://sms/"); Cursor c = managedQuery(inboxUri, null, null, null, null);
This effectively gets me to latest text message that has been sent/ received. I am now trying to put certain fields into a listView, but need to format them before displaying them. The date is represented in the table in milliseconds and I want to convert it to a date before placing it in the list.
Here is where I am trying to place the date in my list. How can I format these fields before placing them into my listview?
CODE:.......................
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Dec 5, 2009
So this is a response to another thread, that I never got a reaction on. Hopefully someone can give a hand. I have a AutoCompleteTextView with a CursorAdapter with data. I need to be able to set a text in the AutoCompleteTextView programmatically without the autocomplete mechanism kicking in. If I use *setText *on the AutoCompleteTextView it will start the autocomplete. I tried calling *dismissDropDown() after setText, but this dosnt work because the drop down is not shown yet.
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Nov 14, 2009
I can't seem to get AutoCompleteTextView to work with Theme.Light.The problem is the autocomplete popup draws the suggestions text in white on a white background. You can only see what the suggestions are after they are selected, because then the white text is drawn over top of the selector background.It works fine with the default theme but not with Theme.Light.I tried setting the android:textColor attribute.That only set the color for the AutoCompeleteTextView input box, not for the suggestion's popup.Right now the only way to get my app to work properly is to use the default theme.Does anyone else have the same issue or know of a way to programically set the suggestion's popup text color or background?
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Nov 4, 2009
I've posted this in a couple of places without any help so hopefully this group has some helpful people :) I have an AutoCompleteTextView which I want to populate with artist names based on what the user types.The problem is that I have a thread for retrieving the names from a web service, but when I try and update the ArrayAdapter with a Handler on the UI thread (which is called from the web service thread), nothing gets updated on screen. When I type another letter though, then the previous results from web service are displayed in the autocompletetextview rather than the latest.
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Jun 20, 2010
I have an AutoCompleteTextView working with a ContentProvider that correctly pulls known information from a database when the user is typing and presents it. However, I would also like to support the automatic hints/word choice list you get when using apps like the Messaging app. I haven't figured out how to get that thin bar of word choices to appear. Can some one clue me in on how to use that in combination with my existing ContentProvider?
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Nov 15, 2009
Has anyone noticed that AutoCompleteTextView doesn't pass the focus to the next field when you tap on "NEXT" button on soft keyboard? And it's all happening on Android 1.6. v1.5 works flawlessly! Is there any known solution for this?
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Apr 27, 2010
I'm having problems with spinner. I'm using spinner that is bound to a SimpleCursorAdapter. I want to retrieve the text value of the selected item. So i tried
CODE:..................
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Mar 24, 2009
The favicon field returned by the browser bookmark provider is a sqlite blob. I want to display the bookmarks in a listview with the favicon but couldn't find a way to do it. I tried using a SimpleCursorAdapter.ViewBinder but I get an exception.
This is what my code looks like :
CODE:...................
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Apr 1, 2010
I want to create a table whose primary key will be some other field and not _id . The below table gets created but the value of _id remains null :
"create table accounts ("+BaseColumns._ID+" integer , profile_name text primary key" +" name text not null);";
My doubt is wont _id get auto incremented if we do not place "+BaseColumns._ID integer primary key autoincrement+" .
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May 28, 2009
I'm porting an app of mine to work better with API 1.5, and I'm having problems with the layout files where I'm using an AutoCompleteTextView (and, naturally, MultiAutoCompleteTextView). Whenever I have them present in a layout, the graphical representation of the layout disappears, and "NullPointerException: null" replaces it. Is there any way I can view a widget such as this in the Eclipse editor? It definitely worked in the 1.1 SDK, otherwise I wouldn't have used them.
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Oct 13, 2010
I have an AutoCompleteTextView with a MatrixCursor as an adapter. The AutoCompleteTextView has a OnItemClickListener as follows:
CODE:...............
When an item is selected I see following in the log
CODE:................
If you see the log, the Before log entry, the getText() returns a SpannableStringBuilder object and toString() of it returns some object identifier.
How do I get actual text of the auto-complete view which was there just before clicking drop-down item?
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Jul 18, 2010
I have a dialog window that covers 1/3 of the entire screen height and is displayed on top of my activity. The dialog holds two AutoCompleteTextView fields.
The problem I'm facing is that when the user starts typing something into the AutoCompleteTextView, the list with all suggestions only shows up to the bottom end of the dialog, but doesn't go beyond that even the list is longer. It looks like it's cut off. (screenshot left)
Only after I long-press an item from the suggestion list, the list will be shown in full length. (screenshot right)
Screenhot is at: http://img704.imageshack.us/i/dialogdropdown.png/
How to fix this behaviour so that the list shows in full length right from the beginning, when the user starts typing something?
Code-wise there's nothing special, all I do is:
CODE:..........
One workaround idea is to somehow dispatch a motion event to simulate a touch (but then not selecting though) one of the list items. Any concrete idea in code for a solution.
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Sep 2, 2009
i have done the blocking of the drop down list with dismissDropDown() but wen ever i do a settext on the autocompletetextview, the list drops down with the matched texts.i dont want that. i have set the input type of the autocompletetextview to TYPE_NULL, but still no result.plz tell me a way to block the drop down. i am controllin the drop down with a button thats properly working its only that wen i do a settext on it, the list drops down. how can i stop this.
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Aug 13, 2010
I extend AutoCompleteTextView and override preformFiltering function in order to get results from database.I'm getting the results but then nothing is shown. And getView in custom adapter is never called.The strange thing that If I preload items (inside init() function) I can see them...May by anyone can point me to the right solution?
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Aug 27, 2009
I have made custom view for autocompletetextview, but when I am trying to select any entry from that dropdown using touch or dpad, it is not showing any focus on it, so what can be problem in that?
My code is as under.
Custom view adapter code regarding to UI:
CODE:.....................
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Oct 22, 2009
I have a problem with bindView() that has me puzzled. I am using it to customize each row, including setting icons, coloring the background and setting up listeners for buttons. It mostly works as expected, but not quite.
When I fill the ListView with SimpleCursorAdapter, I get multiple calls to bindView() for position 0, but only 1 call for the other rows. The problem is that when all is said and done, I have 2 rows (LinearLayout) created for position 0. Here is a sample log extract:
CODE:........
I use a view holder class to hold the view, position and other data so that when a button is clicked, I can retrieve the holder with view.getParent.getTag(). This all works fine. The problem is that there are two views for position 0, but it's the first one in the above logcat that seems to be displayed. My code which acts on the rows when a button is clicked (especially setting background color) does not reliably hit the position 0 row that is actually displayed.
I can see what's happening but I am at a loss about what to do about it. Why are two view created for position 0? Is it something that I can control? How? If not, how should I deal with it so that the results when I modify the views are predictable?
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Jul 19, 2010
If I pass a cursor to a simplecursoradapter, do I still need to close the cursor? if so when: after I pass it to the adapter or when the adapter is finished?
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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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Aug 12, 2009
Is there any method to control popup window in AutoCompleteTextView? Such as location, background?
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Jan 24, 2010
I am using AutoCompleteTextView , when user clicks on it, I want to show suggestions even if it has no text - but setThreshold(0) works exactly the same as setThreshold(1) - so the user has to enter at least 1 character to show the suggestions.
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Jun 1, 2010
I am facing the following problem: I have a big list of street names(~2000 entries), which is stored as a variable. I have an AutoCompleteTextView which should complete the names. The process takes really long time(approx. 2 - 3 seconds) to complete the suggestion. Is there any way to speed this up? I am pasting my code, if this is necessary:The getStreetsData() method simply returns the static list of the names.
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Nov 15, 2010
I would like to know how I can change the direction (up or down) of an AutocompleteTextview drop down list.
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Jun 2, 2009
Is this possible? Lets say I have an ACTV that shows you a list of contacts. If I place a T in the ACTV then it may generate a result of 10 contacts. In landscape mode (physical keyboard not open but phone turned sideways), the dropdown list gets covered by the onscreen keyboard. This will generate completion hints at the top of the keyboard. But these hints do not cover all of the data behind the ACTV. There is no way for the user to scroll through the entire list to see all of the data.
There should be someway to force the ACTV to scroll as I move through the onscreen completion hints. This would be an acceptable replacement of the ACTV list. There does not seem to be any such association.
Also, there does not seem to be any public association between the completion hints and your ACTV adapter. Currently, the only way that I know of matching a view(custom and holds data such as phone #, etc) referenced by my ACTV adapter is to do a match on the text placed in the ACTV when selected from the completion hint. I am posting here as the http://groups.google.com/group/android-developers/browse_frm/thread/5... thread appears to be dead.
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Mar 19, 2010
The problem is as follows: - My app is deriving from TabActivity that has 3 tabs - Each tab has a ListView - Tab1 is populated by an adapter that inherit SimpleCursorAdapter and overrided the bindView() method. This tab is displaying correctly. - Tab 2 is also populated by another adatper that inherit SimpleCursorAdapter and overrided the bindView() method. For some reason that I don't understand, the overrided bindView() is not being called. Thus the tab is not displaying correctly.
Here's my code fragment:
CODE:...........................
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Oct 31, 2010
Im using the NotePad example as a base for an application. This binds a ListActivity to a Provider.
Its perfect, except it uses SimpleCursorAdaptor, which means the list only binds to and displays one item per row. I want it to display two items, both bound the Provider. Or more accurately display the text from one Content Provider field and an icon which depends on the value of a different field.
This sounds like a pretty simple thing to do, a very slight modification to the NotePad application. Trouble is, I have no idea on *how* to do it. I really need a starting point, and "approach" to use.
So far I have tried (unsuccessfully):
* Hand populating the ListView by reading in the Provider data and populating an array in OnCreate. This works, except as the data is not bound the List does not update when I add an item.
* Extending SimpleCursorAdapter with a custom getViewBinder. Could still only bind to a single column.
* Building my own ListAdaptor. Couldn't get this to work.
* Concatenating both fileds together and "parsing" 2 fields into 1 field read/write.
The next thing I will try is extremely tacky running two separate simpleCursorAdaptors in two views in a Linear Layout, fudged so the row height is identical, and duplicate the logic.
I say this only to show that I really, really have tried.
How I can create a custom CursorAdaptor which binds to two fields instead of just one like SimpleCursorAdapter?
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Nov 23, 2009
I was poking around in the documentation for the simpleCursorAdapter and I read that if the simpleCursorAdapter doesn't identify your images as resources it will assume they are URIs. My question is how do i retrieve the URI for an image placed into the asset folder of my application?
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Nov 24, 2010
I know you can set fastScroll for listViews, but currently I would like to use a ListActivity with a simplecursoradapter instead. Is there no way to make such a view fast scroll?
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