Android :: Java / Droid - Start An AsyncTask After 3 Seconds Of Delay?
Nov 14, 2010Java/android how to start an AsyncTask after 3 seconds of delay? how i can do that?
View 2 RepliesJava/android how to start an AsyncTask after 3 seconds of delay? how i can do that?
View 2 RepliesI'm trying to launch a lot of remote connection retrieve picture on a server. To do this, I use AsyncTask.
This pics are displayed in a listview using adapter.
If I implement this in my adapter, images are retrieved but the display is bad (problem with index or something like that).
If I try to retrieve image when I build my object list (contained in my listview), I get the exception 04-07 13:35:57.744: ERROR/AndroidRuntime(4132):
CODE:.................
What is this exception ? Why I can launch multiple asynctask in my listview (giving to me a bad result) and not in a simple object without having this issue ?
I am using an AsyncTask to fetch the ring tone for a contact when my application starts, it works fine until after my Activity closes a couple of times during the AsyncTask, after this happens the AsyncTask will only ever get to onPreExecute() and never doInBackground, so I can never fetch the ringtone then until either a force stop or device restart.
Why this might be happening? Why the AsyncTask would get to onPreExecute but then never run doInBackground()?
Here is my code: (Following the Shelves source code)
CODE:.....................
And onAddRingtone() is used in onCreate and onCancelRingTone() is used in onDestroy() as well as where you can see if in the code above. I have spent 3 days on this and I haven't been able to find a solution? Am I taking the wrong approach? Using cancel wrong? Is there a bug?
I know some decent stuff of java !!! But have absolutely no clue about XML.... Please help me as to where to start and how is the linking between XML and Java codes in a standard ANdroid App !!!
View 2 Replies View RelatedI have an existing C++ library that I want to compile into a static library, and call commands from it with Java on the Android platform. I am brand new to Android development, and just need to figure out how to set the Java interface up so my C++ lib works on the Android. Where do I start?
View 8 Replies View RelatedApart from knowing a bit of C, I have no experience in software development.I want to know from where to start learning to build android applications apart from learning java? What are the steps?
View 2 Replies View RelatedI know about camel case rules, but I'm confused with this m rule. What does it stand for? I'm a php developer, "we" use first letters of variables as indication of type, like 'b' for boolean, 'i' for integer and so on.
Is 'm' a java thing? Does it stand for mobile? mixed?
I'm trying to figure out the correct way to create an AsyncTask to retrieve some data from the internet and then to take that data and bundle it up in an Intent and pass it to a new activity(A list display). So in the first activity I just have an EditText and Button. In the event of an OnClick the task should be called and when it is finished the data should be bundled inside an Intent and passed to the next Activity. The problem is when I take the results from onPostExecute and set them to an instance variable of the main activity, that instance variable is still null when the task is complete. Here is the barebones version of the code:
CODE:...........
When I debug the application I see onPostExecute does contain a valid PlacesList full of results, so why is the instance variable places set to null after the task is executed? I am going about "returning data" from an AsyncTask incorrectly?
I have a native application that I would like to start from a Java interface. Does anyone know of a good way of doing this? can start the application using adb, with no problems. I can also start the application using Runtime.exec(), but that doesn't work so well for me; I need the application to run outside of a Java Runtime Process. Any ideas?
View 2 Replies View RelatedI get about 50 of these coming from my users each day.I realise that this is a Motorola Droid bug - http://code. google.com /p/android/issues/detail?id=5164 Is there anyway I can catch this error in my code?
View 1 Replies View RelatedI have a normal Java application, normally, we start an Android application from a Main Activity, now I must start it from my application.
View 8 Replies View RelatedI'm a beginner in programming. My experience so far is only in Actionscript 2 and 3. So I have a basic understanding of declaring variables, loops, arrays, if/then, do/while... I'm wanting to move to developing for Android phones so I'm wondering what suggestions people have for where to go next. Should I jump right to Android? Start with a 'beginning Java' approach? Or should I go some other route to beef up my knowledge of OOP concepts before launching into Android? I have my Dev environment set up and completed the Hello Android tutorial and I'm just wondering if I am going to be in over my head quickly?
View 6 Replies View RelatedI wrote an android app and so far it works perfect except for on one phone. It is the exact phone that I have with 2.2 on both phones and mine works perfect. The other phone is getting force close all the time but only when opening an activity that queries my image DB and tries to show a gallery. Every activity crashes in the same place, the viewimages. At first I thought it was the intent that was doing it but one of the activitys does not have the intent, it opens the images below the gallery. This works on the emulator, on my moto droid and on a few other different droids. Here is the code for the gallery and my bitmap decoder.
The error is below that.
CODE:..............
Here is the error
CODE:.....................
I am a Java professional. Now I'd like to write an application for the Android platform.
What is the initial step I need to take?
How does my Java programming experience help in this case?
I am making an app for Android, in my Activity I need to load an array of about 10000 strings. Loading it from database was slow, so I decided to put it directly into one .java file (as a private field). I have about 20 of these classes containing string arrays and my question is, are all the classes loaded into memory after my application is started? If so the Activity in which I need these strings would be loaded quickly, but the application as a whole would have a slow start...
Is there other way, how to very quickly load an 10000 string array from a file?
UPDATE:
Why I need these strings? My Android app allows you to find "journeys" in Prague's public transit - you choose departure stop, arrival stop and it finds your journey (have a look here). My app has a suggestions feature - you enter leter "c" as your departure stop and a suggestions ListView appears with stops starting with "c". For these suggestions I need the strings. Fetching the suggestions from database is slow (about 400ms on G1).
How can I start an activity from a servlet? I have an i-Jetty server installed and a servlet that responds to HTTP request. I would like to start an activity from the servlet, does any body have any idea on how to do this?
View 1 Replies View RelatedThere are so many Date-classes (GregorianCalendar, Calendar, TimeZone, Date,.....), I lost track.
How can I get the seconds now since 1.1.1970 as "long" in Android?
I have to display some data after every 10 seconds. Can anyone tell me how to do that?
View 3 Replies View RelatedSo I'm listening to my music on the Droid and notice that the songs have a varying delay between them. Sometimes its not very noticeable and other times it's almost a full second delay before the next song plays. I was wondering, what causes this? Is it the phone itself or does it have to do with the song files? On my computer there is never a delay, each song plays continuously one immediately after the other.
View 4 Replies View RelatedIs there a way to eliminate the ringer delay? It seems like forever before my phone starts to make any noise to notify me of a phone call.
View 11 Replies View RelatedBy the time the phone rings, it takes 12 seconds for the phone to go to vmail (both gvoice and vzw vmail) WHen I call my droid from the eris, it takes 25 seconds, from droid (well any phone for that matter) it takes 12 seconds... on top of the the phone doesn't ring until the 2nd ring or so (like my previous thread) this gives me about 8 seconds to pick up the phone.something isn't right here. I'm almost ready to assume this is a VZW problem, am I correct?(my 2nd try when the screen was off, and phone on sleep, it went to vmail in about 9-10 seconds after the eris started to ring)
View 2 Replies View RelatedEvery time I get an incoming call, something weird happens. I see the number call up on my caller ID and then like 10 seconds later it rings. Has anybody else experienced this or is it just me? Is their any settings I can go to adjust ring time?
View 26 Replies View RelatedI set my screen time out to 30 seconds and..it's been 30 seconds my screen is not timing out. This can be REALLY annoying when I forget to push the power button and just put the phone in my pocket and the battery drains.
I called verizon about this yesterday they had me turn my phone off and back on and then it did time out. Today I tried the same thing and it's not timing out..
The phone is brand new, only 3 days old has not been dropped or anything.
Does the Eris only allow 10 seconds of video texting? I was playing this morning and, it would only let me send 10sec clips at the lowest setting. Any way to send longer clips?
View 3 Replies View RelatedI just got my new Droid 4 three days ago. It turns of and and comes back on every 30 seconds.
View 3 Replies View RelatedSo I'm running 2.2 and now my camera wont work. I can open and take pictures using an Fx camera, but anytime I try to open the camera or camcorder it will open for maybe 2 seconds then just close, sometimes my screen will just be completely black, and also sometimes it tells me camera not available try again another time.
View 1 Replies View RelatedWhen im at my house 3g drops in and out like every other 5 seconds I was just wondering if this is normal or not.
View 10 Replies View RelatedHas anyone else had this issue or knows a fix? I want my screen timeout to be 2 minutes. When i go to the Display options I unclick the button for 30 seconds, click 2 minutes, then exit. A little while later the screen goes off and I go back to the Display settings and it is back at 30 seconds again. It does not seem to go to the value I want but goes back to 30 seconds each time.size limitation on email on a Verizon Droid?
View 6 Replies View RelatedI loaded about 4 gigs worth of videos (About 160 different clips) onto my 8 gig SD card. When I try to play a video, the video freezes after about 1-2 seconds, but the sound keeps playing. Is there any way to solve this? There's just over 3 gigs of free space on the card.
View 16 Replies View Relatedi have two files
App.java
Gallery.java
App. java contains frontend buttons and functionalities Gallery.java lists the imagesin the sd card. i want to call Gallery.java in click event in app.java
App.java
package gallery.display;
import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.view.View;...........