Android :: Cursor Move To First / Blocking UI Until Operation Completed?
Jul 20, 2010
I have a background thread which queries for 1000 records at a time. After querying , when i call cursor.move To First(), the UI gets blocked until the operation is completed.This is very disturbing experience for user , especially if there are 10000 plus records.I use Thread.sleep in between after each 1000 records, As soon as cursor.move To First is called, UI blocks for 2 3 seconds. Am i missing anything here ?
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May 4, 2009
Is there anyway to block the UI Thread till the .mp3 file completes (or in general blocking UI thread till perticular action in the b/g thread completes).
I had used following code but not got the expected result.
COD:.................
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Dec 28, 2009
I have code that runs in the background and holds a connected Socket and it's InputStream.It calls read() infinitely until something is received, then continues to parse.Socket timeout is 0 of course.I am interested in what would happen when the device goes to sleep?Is the CPU off? Will this socket be responsive in this case?
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Feb 22, 2010
After the following two lines are executed, the text is shown on the left side of the EditText, and the cursor is also on the left edge. While I wanna show the text on the right side of the EditText, and move the cursor to the end of the text. code...
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Feb 14, 2010
I try to create my nice widget but I'm locked in a problem of button. this an example of code...
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Jun 8, 2010
when u touch on screen in a text field, is there a way to move the cursor? or you just have to keep touching each point in the word to get to the point u want to change a letter at?
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Nov 27, 2010
with the Incredible Keyboard , how can you move cursor back with out deleting letters/numbers? pain in the butt trying to hit the right point with finger tap to go back in a message...Any Idea's
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Apr 18, 2010
Just noticed that there doesn't appear to be any kind of optical trackpad on it. How will you be able to do things like move a cursor through text? Are they just relying on the bigger screen to enable more accurate touching?
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Jun 12, 2010
I know I can just tap the screen, but so many times, it doesn't land the cursor right where I want to delete. Yes, I can go back, but that deletes everything. I just want to be able to move the cursor back to the part that I want to edit, add or delete.
Is this not possible on the DINC?
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Aug 5, 2010
Can you use the optical trackpad to move the cursor when writing text? So if you realise you've gone wrong you don't have to place your finger in-between two letters. On my existing very old touch scree phone this is a big issue as i can never get the cursor exactly where i want Another trackpad question - what purpose does it have when browsing, does it highlight links allowing quick navigation without using the pinch and zoom?
Final track pad question- do you use it? The battery- with moderate to heavy use will it ALWAYS last a long day 7-11 for example? Hows the froyo update, is sense still as smooth as ever?
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Nov 12, 2010
I use the hardware keyboard exclusively, but am wanting to use the software keyboard more, figuring that my next phone may only have that. My real problem is figuring out how to move the cursor around in the text. If I want to go back and edit using the hardware keyboard, I just use the d-pad to move back to the spot I need. How do I do that with the software keyboard? Am I forced to tap the screen (which never chooses where I want it, and I have to key pecking at it to get it in the right place)?
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Sep 6, 2009
I can't see any arrow keys on the keyboard to move the cursor around in a text entry box. So, when I want to correct a typing mistake I have to stab my finger somewhere to the right of the error then backspace over the error (usually deleting a few correct characters in the process) before retyping. There must be a better way.
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Sep 1, 2010
Has anyone found an easy, reliable way to reposition the cursor so that you can modify text you've already written? The only suggestion I was given was to "swipe" the cursor over to where I wanted it, which turns into a series of moves that have the cursor jumping all over the place. Are there no equivalents to the "cursor arrows" that let you move the cursor up, right & left?
Does anyone have a better way?
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Nov 1, 2010
I am new in Android and i am working to make an on-screen keyboard which can be visitable via arrow(direction) keys of my external keyboard. I mean i wanna move left, right, up and down in the on-screen keyboard's UI (keys) with pressing arrow keys from my external(hardware) keyboard. The key that cursor is on should be focused, when i press an arrow key from my external keyboard the focused key should change and when i press "enter" from my external keyboard it should be operated.(written to the screen etc.) How can i make this? Is there any idea? How can i make virtual keyboard's keys visitable? It doesn't look like moving around a matrix of buttons.
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Mar 29, 2010
The structure of some of my activities is a simple ListView with a custom CursorAdapter. The cursor is created in onCreate() on the activity from a SQLite database. The problem is that querying the SQLite database can be quite slow at times with lots of data (and let's assume I've already optimized the sql query as much as possible). Because it occurs in onCreate() on the UI thread, I get ugly black screens when opening the activity, which sometimes turn into ANRs, on a slow phone like the G1. I want to load the cursor in a background and show "Loading.." on screen while doing so. I saw AsyncQueryHandler used extensively in the framework, but this seems a solution geared more towards Content Providers and not application-local SQLite databases. I then thought of trying to load the cursor in a background thread, but realize that this might be problematic, as the CursorAdapter should be instantiated in onCreate() and should take a cursor as a parameter. The latest thought I had was to instantiate an empty MatrixCursor in onCreate() and pass that to the cursor adapter, while kicking off a thread/TimerTask to query the database. Then, on database cursor load, call cursorAdapter.change Cursor to the properly filled cursor. This doesn't seem very elegant and seems quite wasteful, however.
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Mar 21, 2010
I get records from the system by quering a ContentResolver. I maintain the order of the items in the database. So I want to display the items in the order taken from my database.
How do I merge these two informations?
I am looking after an alternative way now. As what I ideally want is:
Get order of contacts by a custom order held in my database (this involves joining CR with my DB cursor, and doing an order by, later seams it's not possible with CursorJoiner) but there is more, if the join is not unique I want to sort by contact's name as last measure
Which is impossible using Cursor and Joiners, because of the missing feature of order bys, also I need to return a Cursor, as I will be using the in an ExpandableList
Also this translated to TSQL it would look like
select * from contactsdata
left join category on contactsdata.catid=category.id
order by category.pos asc, contact.display_name asc
So I am looking now after an alternative. I have in mind to load in a temporary DB table all data from CR, then do the query on the temporary table where I can join tables and do order bys? How does this sound to you?
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Jul 15, 2010
New to Android and this is probably a stupid question but I couldn't find an answer after searching the forums.
I have the Evo and cant figure out how to get rid of the completed download indicator arrows at the top of the screen.
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Jun 3, 2009
I want to find the dimensions of the various views in my layout. My understanding is this can only be done after layout is completed since layout is somewhat dynamic. So, after the activity calls setContentView() and then returns control on the main thread to the OS so that layout can occur, how do I get a notification that layout has completed so I that I can query the views for their dimensions? On a related topic, can I find out the status bar's height or least the screen's full size (from which the status bar's height can be calculate by subtracting my window's height)?
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Jan 12, 2010
I have a BroadcastReceiver which never enters onReceive(), so to debug I created a bare bones project with a simple BroadcastReceiver and still it never gets the BOOT_COMPLETED intent (see manifest below).
I do see a lot of warnings/errors in my Eclipse log (filtered and after manifest) which didn't seem to cause issues before, but maybe I have a bad install of the emulator? I have all the latest SDK and plugins. I also noticed that when I run the emulator I always get "Waiting for" popup for either Alarm or MMS.
The debugger attaches normally for my main Activity, it's just this "boot" receiver that never seems to start. I've tried using "com.boottest.BootReceiver" instead of".BootReceiver" to no avail.
CODE:......................
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Jul 20, 2009
I am trying to create AlarmManager in BOOT_COMPLETED BroadcastReceiver.
It is NOT working, AlarmManager Receiver is never fired.
BootReceiver:
code:......................
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May 8, 2009
Is it possible to listen for WebView page load completed event (the whole page is loaded including images, js files, css files and the page is completely rendered.
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Nov 20, 2009
Is there a way through the android maps API, where I can detect the map center after pan animation has completed? I want to use this information to load markers from a server dynamically.
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Jul 31, 2010
Is it possible to stop Astrid from syncing with RTM every time I check off a task as completed? I don't have a constant Internet connection and it keeps giving me a dialog window every time it can't sync.
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Dec 8, 2009
I have two versions of the same application that starts by playing an mp3 from the res/raw/ directory, both versions of code are the same as far as the MediaPlayer is concerned and the code used. I get the following error in one version and it plays just I would expect in the other version. I am using 1.5 as my target. I get the same issue on my the devices (G1 and G2) as well as the emulator. I have read some other posts with the same issue and still am unable to resolve my own issue. For those who are going to come back with use MediaPLayer.create (context, id) I can not as I want to control what is being played without creating new instances of the player. It perplexes me that the same code works in another version of the same app that has no change in the code (in fact the alternative app just has a reduced number of images in the drawable folder).
The error message also will occur if the file is not found by using mp.setDataSource("file");
CODE:.....................
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Jul 21, 2010
I write a app but it is not doing anything..
code is given below:
CODE:..............................
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Jan 21, 2010
When people call me on my google number it says "call can't be completed as dialed" even with 1 and the area code.
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Jan 19, 2009
I wish to add a new operation to the contact detail view page under the current set of operations for a mobile number (Dial, Send SMS/MMS, ...), such as "Send a file". For my custom activity, what action and category would I specify so that my new operation appears in the contact detail view page? The end result would look like this (apologies for dodgy ascii art): ...........
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Apr 16, 2010
I completed all the steps. easy enough. now, which rom do i install, and how do i do it?
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May 1, 2009
what is a good way to signal an error from a thread that is not the UI thread and you don't know which activity/handler is currently active? Can I somehow get eleto the current UI thread? Can I somehow use the MainLooper from the application context? I use notification for serious events where the user needs to take action, e.g. a login failed, but here I am looking for a transient notification with a toast and it would be ok if the toast is not seen in some cases.
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Sep 11, 2010
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nexus 2.2, device connects via wifi port not blocked datagram send works from android 1.5 moto blur.
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