Android :: AutoCompleteTextView Update From Thread
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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May 27, 2010
I have a separate thread running to get data from the internet. After that, I would like to update the ListView in the main thread by calling adapter.notifyDataSetChanged(). But it does not work. Any workaround for that?
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Mar 26, 2010
Im working on a small application to try out an idea that I have. The idea is to periodically update the UI when event of some sort occurs. In the demo I've created, I'm updating a ProgressDialog every 2 seconds for 15 turns. The problem I am having, which I don't quite understand is that when an event is handled, I send a message to the handler which is supposed to update the message in the ProgressDialog. When this happens however, I get an exception which states that I can't update the UI from that thread.Am I missing something? The logic makes sense to me and it looks like everything should work, I'm using a handler to update the UI like it is recommended.
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Aug 28, 2009
I am seeing some weird issues and looking to see if anyone knows what is going on. I have a BroadcastReceiver which updates some views on receiving an event. Some psudo code is shown below. What happens is the function runs fine and the app seems to update the textviews BUT when i then try to clear the textviews parent and add new textviews the linearlayout(parent) blanks out and will now draw any of it's children.
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Jul 31, 2010
I'm trying to learn AsyncTask and Thread but Thread first. I am trying to display a Dialog before "DoSomeTask()" but seems like the Dialog always come after DoSomeTask(). Did I do something wrong here?
--- code---
@Override public void onClick(View v) {
// TODO Auto-generated method stub mainProcessing();
DoSomeTask(); } private void mainProcessing() {
Thread thread = new Thread(null, doBackgroundThreadProcessing, "Background");
thread.start(); }
private Runnable doBackgroundThreadProcessing = new Runnable() {
public void run() { backgroundThreadProcessing();
} };
private void backgroundThreadProcessing() {
handler.post(doUpdateGUI);
} private Runnable doUpdateGUI = new Runnable() {
public void run() { updateGUI();
} };
private void updateGUI() {
final ProgressDialog dialog = new ProgressDialog(CloseVault.this);
dialog.setMessage("Please wait...");
dialog.show();
}
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May 9, 2010
I try to make several connection in a class and update the multiple progressbar in the main screen. But I've got the following error trying to use thread in android : Code: 05-06 13:13:11.092: ERROR/ConnectionManager(22854): ERROR:Can't create handler inside thread that has not called Looper.prepare() Here is a small part of my code in the main Activity.
public class Act_Main extends ListActivity
{ private ConnectionManager cm;
public void onCreate(Bundle savedInstanceState)
{ super.onCreate(savedInstanceState);
// Set up the window layout
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.main);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title); }
public void startConnection() { ......
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Oct 19, 2010
Curious to know the reason behind not allowing updating UI elements from background thread in Android. Will main thread does something more (probably interacting with framework) after updating the UI elements so that changes can be seen on the screen? Is it the same case with other GUI tool kits?
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Mar 16, 2009
I like that my GUI appears immediatly when the User starts the APP. Than some Data (text, Pictures) come loaded in the Background (like Youtube APP) The Listview and Gallery comes updated automaticly with this new Data.
I initiate my Listview, start a Thread and load the Data....and than the Listview does not come updated!!
Several People write I should use notifyDataSetChanged(). But I can not place this Command in my Thread (just unknown).
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Mar 3, 2009
My purpose is very simple : each 1second, I want to redraw an object on different place on background. I do not know where my error on this code below. Here is my code:
public class My_View extends View{ private Bitmap mBackground_img;
private Drawable mMoveObject; private int mObjectw,mObjecth; private int Dx,Dy;
private Handler myHandler = new Handler(); private long lasttime;
public My_View(Context context,AttributeSet ats,int ds) {
super(context,ats,ds); init(context);
} public My_View(Context context,AttributeSet ats) { super(context,ats);
init(context); } public My_View(Context context) { super(context);
init(context); } public void change() { invalidate();
} private void init(Context context) {
Resources res = context.getResources();
mMoveObject = res.getDrawable (R.drawable.lander_firing);
mBackground_img = BitmapFactory.decodeResource(res, R.drawable.my_pic);
mObjectw = mMoveObject.getIntrinsicWidth();
mObjecth = mMoveObject.getIntrinsicHeight();
Dx = Dy = 0; lasttime = System.currentTimeMillis() + 1000;
Thread mthread = new Thread(null,doBackground,"Background");
mthread.start(); } private Runnable doBackground = new Runnable() {
public void run() { long now = System.currentTimeMillis();
if(lasttime < now ) { Dx = Dx + 10; Dy = Dy + 10;
lasttime = now + 1000; myHandler.post(change_view);
} } }; private Runnable change_view = new Runnable() {
public void run() { change();
} };
@Override public void onDraw(Canvas canvas) {
canvas.drawBitmap(mBackground_img,0 ,0 , null);
mMoveObject.setBounds(Dx, Dy, Dx+mObjectw, Dy+mObjecth);
mMoveObject.draw(canvas);
} }
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Aug 18, 2010
Look at my code.
- code -
private Handler handler = new Handler(); private ProgressDialog dialog;
final Runnable runInUIThread = new Runnable() { public void run() { dialog.dismiss();
} };
private void DoThis() {
dialog = new ProgressDialog(Main.this); dialog.setTitle("Title");
dialog.setMessage("Text"); dialog.show();
Thread newTask = new Thread() {
@Override public void run() { Looper.prepare(); DoThat();
handler.post(runInUIThread); Looper.loop();
); newTask.start(); } }
Is it possible to use test.setText("something") in this thread to update a Button text or TextView in the LinearLayout after the dialog is dismissed? I try cheating placing:
test.setVisibility(View.INVISIBLE);
test.setText("something");
test.setVisibility(View.VISIBLE);
after dialog.show();
It kind of updated the text when the dialog open. I want to do it after the dialog was dismissed. What is the correct way to implement this in my thread?
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Sep 22, 2010
Anxious to see when people start getting this update.
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Sep 22, 2010
Has anyone noticed the following after the update?YouTube has a new stock home page widget which shows most popular videos ( that seems to mean that it is constantly checking now)The screen brightness is darker. I always have the screen set as low as it can go (I use quick settings) but now it appears darker then before.
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Sep 22, 2010
We need to keep it down to one or two threads, it's kinda getting out of hand in here For those searching for info, and especially for newbies or non techies it can really confuse.
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Sep 22, 2010
For those of you who were unlucky enough to attempt an SBF Flash on your OTA 2.2, You would have found youself bricked and awaiting an Updated leaked 2.2 SBF.I'll be bringing news here as it comes in. As soon as it hits anywhere,
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Nov 4, 2010
DROID Incredible Update Ready, Looks Like a Bug Fixer - Droid Life: A Droid Community Blog.Looks to be reporting about a confirmed bug fixing update from Verizon for our 2.2 devices.I did checked my DI but it says I'm on the latest version.I will be keeping an eye out though.
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May 6, 2010
Got the ota at about 5 am this morning, but it froze and didn't work. So when I restarted it said no update available. Wonder if there's something wrong with me phone.
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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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Aug 3, 2010
So I thought to help the madness on the others threads that we could make one with all of the pros and cons we have seen in the new official update to help people see what they should do as far as force it or root and etc.Flash is not included so you have to find it in dumb ways and it is not in the market.No more vibrate and silent modes being separate.
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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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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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Nov 4, 2010
This is what orange UK just sent me
Great news. In the next few weeks there'll be a software update available for your Sony Ericsson X10. For more information go to orange.co.uk/helpx10.
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Oct 29, 2010
I'm new to this place, but how many 2.1 threads do we need here?Starting 'anticipation' threads today is pointless! Helpful people on forums naturally give out all the news as and when it comes, so.If you think, "Sod it... I'll get it when they're ready to give me it", then join me here! Pour a drink, roll a number.... and chill... maybe even talk about something else in the meantime?(Haha - sorry guys... I'm having a bit of a giggle at your expense, but it's getting a bit 2.1 crazy in here!)
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Sep 7, 2010
How can I implement a run() method of thread if I create a Thread Global?
I mean If I create a Thread Globally then can I implement its run() method {" public void run()"} anywhere in my Application?
In the run() method I have to write the code to perform some action.
IF I can do it then please can anyone show me briefly how to do it particularly.
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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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