I have had to program some applications that require large amounts of timed tasks to occur. However, I'm afraid to create so many timers because I haven't been able to figure out how they are handled by Java. Is there a problem with starting large quantities of scheduled tasks? If so, what is the better alternative?
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I have a TimerTask task calling a function onTimerComplete() in its run()
onTimerComplete() looks something like this:
CODE:...............
I make a Timer t and I schedule the TimerTask with t.schedule(task, 2000);
The problem is, when the timer is up and the task runs my onTimerComplete() but that function does not finish. It runs myFunc1() but never finishes it nor does it ever call myFunc2()
However, if I call onTimerComplete() directly, everything works.
In my application, how do I disable the transition animation that shows the new activity layout enter from the right and the old one exit to left? Versions 2.0 -> 2.2 if relevant.
View 2 Replies View RelatedI am trying to get a slide down animation to work, and it seems to work except that it starts with a big black screen instead of the screen that was there. So I have layout1 and layout2. When I start the animation using ViewFlipper.showNext it puts a big black background over layout1 and then slides in layout2. If I use ViewFlipper.startFlipping() it slides in layout2 out as it is sliding in layout1 -- which is what I would expect.
My slide_down.xml looks like this:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromYDelta="0" android:toYDelta="100%"
android:duration="4000" android:detachWallpaper="true"/> </set>
My java code looks like this:
ViewFlipper vf = (ViewFlipper) findViewById(R.id.DropDownList);
vf.setAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_down));
vf.showNext(); or vf.startFlipping();
Presently am displaying html file in web view and my emulator size 1024*600. If the html file is large then user is scrolling down to see bottom part of the html. I Need to break these html file in equal parts so that it fits exactly in my screen size. I don't want User to Scroll Down but load remaining part (next page) next time.
View 4 Replies View RelatedI just ordered an Android smartphone and want to start playing around with creating my own applications. Now the question is which language to use, the native Java or Python using SL4A (former ASE).
I tend to Python, as I know it much better than Java, but I'm wondering what I would be missing using a "second class" language on Android. On the SL4A website it is also stated to be alpha quality software, which is not exactly encouraging.
I'm also not quite sure what the limitations of the scripting environment are and if they would be problematic.
when i download large data from website, i got this error information:
I/global (20094): Default buffer size used in BufferedInputStream constructor.
It would be better to be explicit if an 8k buffer is required.
D/dalvikvm(20094): GC freed 6153 objects / 3650840 bytes in 335ms
I/dalvikvm-heap(20094): Forcing collection of SoftReferences for 3599051-byte al
location
D/dalvikvm(20094): GC freed 320 objects / 11400 bytes in 144ms
E/dalvikvm-heap(20094): Out of memory on a 3599051-byte allocation.
I/dalvikvm(20094): "Thread-9" prio=5 tid=17 RUNNABLE
I/dalvikvm(20094): | group="main" sCount=0 dsCount=0 s=0 obj=0x439b9480
I/dalvikvm(20094): | sysTid=25762 nice=0 sched=0/0 handle=4065496
My OEM's preloaded rom is almost-nearly stock, apart from 2 things:
1. White background on "system settings" interface and not the default holo. Cant that be changed to default?
2. Ribbon effect instead of flash-light in holo effect, which tbh is quite annoying, because the ribbon effect is also quite large and in slower animation speed so that,s 1 second of frustation everytime i scroll to the end. (Yea, 1 second isnt much but, add those up and it gets annoying really fast)
How can these be changed back to default without installing a custom rom?
I am developing a simple app which does a little bit of image-processing. It's divided in two activities; the main one with some display elements and the second one which is used to capture images off the phone's camera.
To discribe my problem: I start the app, capture an image (by starting a new Intent with the subactivity) and all data is displayed correctly. If I capture another image after this, I run in an java.lang.OutOfMemoryError - bitmap size exceeds VM budget
I dont store the captured bitmap, in the second activity I just extract some data from it and pass it to the main-activity; finishing (finish()) the sub-activity afterwards.
Basically i want to start Notepad application in android from my application , can i do this in android using runtime.exec() method of RuntimeClasss and assign it to a process and kill the process later.
View 8 Replies View RelatedI have one simple question regarding Java TimerTask. How do I pause/resume two TimerTask tasks based on a certain condition? For example I have two timers that run between each other. When a certain condition has been met inside the task of first timer, the first timer stops and starts the second timer, and the same thing happens when a certain condition has been met inside the task of second timer.how do I pause timer1 while running timer2 and vice versa while timer2 is running? Performance and timing is my main concern as this needs to be implemented inside another running thread. By the way I am trying to implement these concurrent timers on Android.
View 4 Replies View RelatedIs there any way to stop some applications from starting on system startup? I means not killing them. just don't let them to start.
View 4 Replies View RelatedIm currently developing a system where the user will end up having large arrays( using android). However the JVM memory is at risk of running out, so in order to prevent this I was thinking of creating a temporary database and store the data in there. However, one of the concerns that comes to me is the SDcard limited by read and write. Also another problem that comes to mind is the overhead of such an operation. Can anyone clear up my concerns, as well as also suggest a possibly good alternative to handling large arrays ( in the end these arrays will be uploaded to a website by writing a csv file and uploading it).
View 1 Replies View RelatedDoes anyone know how to get the android device system log programatically using Java? This would be something similar to what is available on lower panel on the Dalvik Debug Monitor.
View 2 Replies View RelatedAre there any audio fingerprinting systems (PUID, etc) that are implemented in pure Java (for running on Android)?
View 1 Replies View RelatedI want make it support multiple screens(small,normal and large).I am 100% sure the all of layouts are working perfectly now, but large screen,the problem is that all XML files of layouts in layout-large can't load,The platform always load default XML file(these are under layout folder) at large screen environment.
View 4 Replies View RelatedI want to add some function to my system music player app. So I decompiled the classes.dex with dex2jar, copied the source code and add the code for my functions. Now my problem is that I do not know how to recompile the app. I can't compile it with Eclipse because it uses some system namespaces (in Eclipse it is an error so I can't compile) How can I recompile the app? I only have the *.java files.
Or can't I use the java files and have to edit the smali files? Of course that's much harder...
I have an android application which has a service running. After 20 mins from that service and other systems (such as GPS) starting I would like it to automaticly stop. I assume I need to use a Timer for that?
View 2 Replies View RelatedI found this code for Android timers.
CODE:.......
I need to understand one thing... the comments say that this method runs in the same thread as the Ui does it mean that this method will keep running even when the screen is turned off or the activity is pushed to the background for eg. in case of an incoming phone call ?
There are few built in ways to invoke a timer using the Android stack, A good example is the Chronometer. (http://developer.android.com/reference/android/widget/Chronometer.html) I would like to integrate piece of code (A thread)that implements timer using the Thread.sleep() method. I plan to have a Service tat invoke this thread and communicate with it. Are there any disadvantages of using the sleep() method over Chronometer?
View 1 Replies View RelatedHas anyone found the call timers feature ? im looking for the outgoing, incoming, and lifetime timers.
View 1 Replies View RelatedI need a time tracking app. There is a lot of time trackers on Google Play and I've tried a lot of them, but in every app I missed one important feature: parallel timers for different clients and jobs.
I need:
- to define my clients, to define my jobs I do for the clients, to define projects.
- to simply choose client, project and kind of job and then start the timer
- to simply start and stop MULTIPLE timers (start and stop one timer, while second timer is still running)
- to export all data in usable form (for billing my clients)
Example of what I mean:
- My job is phone support. I am sitting at home and answering phone calls. I am payed for hours, so I need to start timer and leave it running almost all day untouched (except of lunch time).
- Because I spent most of the time by waiting for calls, I simultaneously do other jobs. I write articles, compose music and do some other work for other clients. So I need to start and stop timers according to actual work - but the "phone support timer" has to be also running. When I am - for example - writing an article and someone calls me, I need to stop "writing article timer", pick up the phone and solve customer's problem. When I drop the phone, I need to start "writing article timer"... etc...
This kind of app with parallel timers I've used on my Psion PDA back in 1998, but I can't find similar app for Android phones.
I'm just wondering if the "X" being the latest Hi-End phone has some of these "Basic" features, and how to make them work.
My Oooold Moto Razr & old Blackberry Perl there were (1) different ring tones for text, alarm, incoming-ring, etc. You could also set different levels of volume for each.
(2) You could lock individual applications (password protected), like text, recent calls, phone book, etc.
(3) You could also set a timer for phone to SHUT Off, and Turn ON - and pick weekdays, or weekends, or each day.
I haven't been able to figure out these BASIC things on the X yet. Can I download any apps for this, incase Moto Droid forgot to include these basic features on their hi-end phone?
I've looked for this and I can't find it, so I hope I'm not being stupid . All I want to do is reset the call timers and packet data sent on a monthly basis on my HTC Desire so I can tweak my monthly usage if necessary and not exceed my quota. I can't find a call usage summary anywhere on the phone; all I can find is individual times etc per recipient called.
View 2 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;...........
I'm trying to call a java method from javascript using addJavascriptInterface(); but seems does not work, it always display "failure"; java code...
View 2 Replies View RelatedIs it possible to write data or create folder in system directory like /system/media/audio/alarms. i.e other than our respective package.
View 2 Replies View RelatedJava packages like Java.io, Java.Lang etc used in android, are they different from Java packages in windows ? means specially made for android ?
View 2 Replies View RelatedI am an Android app developer, and I have purchased a Nexus One device which I use to continuously test my developed Android applications.
Background: ----------------- One of the applications I developed uses a native shared library (e.g. myNativeLib.so). Only my application loads & uses this native library. I had developed this app before Android NDK came out. I pack my native library into my apk's 'assets' folder, and during my application start- up, I extract this native library from my package's assets folder to my app private directory (i.e. <assets> -> /data/data/<myappprocess>/ myNativeLib.so). Then I use System.load() API in my application to dynamically load this native library.
Problem: ------------ This application was developed during Android 1.5 (i.e. cupcake) days {I didn't have the Nexus One then}. The above procedure has been working without any problems right from Android 1.5 to Android 2.2 (i.e. Froyo). I have also tested the same on my Nexus One for Android 2.1 (i.e. Eclair) and Android 2.2.
The problem began the moment I recently upgraded my Nexus One to Android 2.2.1 via the FRG83 system update. Now, whenever I try to load my native library, I get the following error:
D/dalvikvm( 3653): Trying to load lib /data/data/<myappprocess>/ <mynativelib>.so <some address> I/dalvikvm( 3653): Unable to dlopen(/data/data/<myappprocess>/ <mynativelib>.so): Cannot load library: link_image[1995]: failed to link <mynativelib>.so
What I have Tried: -------------------------- 1. I tried my application using Android 2.2 SDK (emulator)...it works, no issues. 2. I checked out the latest froyo & android2.2.1 source code from Android open-source, built & tested my application + native lib using the latest froyo source...it built & ran, no issues. This should've taken care of any changes in the native code dependencies between Android 2.2 & Android 2.2.1 3. I even checked Android 2.2.1 source code for dalvik (java System & Runtime classes) + bionic (linker & dlopen sources) between Android 2.2 & Android 2.2.1 (using source checked out from Android open-source), but couldn't find anything consequential 4. I am unable to return my Nexus One to Android 2.2.
I'm trying to scale/rotate an image using setImageMatrix, and it seems to have no effect. I've done a lot of Googling and found some people mentioning similar problems, but found no solution.
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