Unable To Instantiate Service For Class?
Jun 6, 2011
I am trying to create a drools app on android using eclipse. It compiles /builds correctly in Eclipse. But when I run it in emulator or android device, it says
W/System.err( 322): java.lang.IllegalArgumentException: Unable to instantiate service for Class 'org.drools.builder.KnowledgeBuilderFactoryService '
I have the required jars added to "libs" directory of the project and the jars are also added to the build path in eclipse.
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Jun 22, 2010
Hi, custom classes which are part of a framework, so nothing graphical. One of those (singleton) classes is a Logging class which send logs to my server. I noticed that even though I can call the classes methods in my service it actually won't be logging anything... In my specific example it's osmething like : Logger.getInstance().log("Whatever I want to Log"); Obviously the getInstance is a static method so it can be accessed from anywhere within my project right away.. I was wondering though why this method for example isn't getting called ? Also how do I debug a Service ? Btw I am using of IPC from one of my Activities which gets bound to the service and can start/stop the music for example...
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May 27, 2012
i'm trying to make a app that will play a aac stream from an online radio station. I managed to build the project but i get this error when running it.
Code:
05-27 06:12:00.734: E/AndroidRuntime(450): FATAL EXCEPTION: main
05-27 06:12:00.734: E/AndroidRuntime(450): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.spoledge.aacplay/com.spoledge.aacplay.AACPlayerActivity}: java.lang.ClassNotFoundException: com.spoledge.aacplay.AACPlayerActivity in loader dalvik.system.PathClassLoader[/data/app/com.spoledge.aacplay-2.apk]
05-27 06:12:00.734: E/AndroidRuntime(450): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1569)
05-27 06:12:00.734: E/AndroidRuntime(450): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
05-27 06:12:00.734: E/AndroidRuntime(450): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
05-27 06:12:00.734: E/AndroidRuntime(450): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
05-27 06:12:00.734: E/AndroidRuntime(450): at android.os.Handler.dispatchMessage(Handler.java:99)
05-27 06:12:00.734: E/AndroidRuntime(450): at android.os.Looper.loop(Looper.java:123)
[code]...
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Aug 20, 2009
I am getting following message when i try to launch service.Also is there any specific path on file system where we need to place the .apk file which contains my serivce component only.
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May 1, 2010
Everything is in the title.
On the official documentations it is stated that Note that services, like other application objects, run in the main thread of their hosting process and AsyncTask only works if it is executed in the UIThread.
So is it possible to use AsyncTask in a Service class? code...
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Sep 1, 2010
What is the class name of media scanner service?
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Oct 2, 2009
if the inner UpdateService class is not static, it cannot start the service. The ActivityManager complains "Unable to start service Intent"...
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Sep 15, 2010
When I create a instance of the SQLiteOpenHelper, I always need a "Context" to be passed as its constructor's argument. To use this "Context", in my service layer class, I extends Activity class, though I do not display this activity on the screen because it is my service layer. I always get NullPointer exception when I open the SQLiteOpenHelper in my service layer class, Is it because my service layer class extends the Activity class but I did not show this activity on mobile screen? (That's there is no intent to my service layer class), if it is so, how to get rid of it if I wanna open a SQLiteOpenHelper in my service layer class which do not need to extends Activity, but need a Context object to pass to SQLiteOpenHelper?
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Jun 18, 2010
In Android, if I want to do some background work, what is the difference between
Creating a Service to do the work, and having the Activity start the Service VS. Creating a standard java class to do the work, and having the Activity create an object of the class and invoke methods, to do the work in separate thread.
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May 8, 2009
I'm posting this to share the lessons I learned while working with IntentService. IntentService has a single constructor that takes a string argument "name". The documentation has no description of what name is used for. In looking at the sources, I found that its only use is in naming the worker thread for the IntentService. This thread is named IntentService [name].
I initially implemented the constructor of the derived class to also take a String argument and passed it along to the derived class. This is wrong. This will cause the startService() call to generated a java.lang.InstantiationException in the application containing the service i.e. you don't get the exception in the application calling startService(). A clue to the actual problem is a little further up in the logs:"newInstance failed: no <init>()"
The derived class must have a Default constructor and that constructor must call super() passing a string for the name component of the worker thread name.
public class MyIntentService extends IntentService {
public MyIntentService() { super("MyIntentService");
} @Override
protected void onHandleIntent(Intent intent) {
// Handle events on worker thread here }
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Jul 2, 2010
I am trying to call my service class's stopService() method from my activity. But I don't know how to access stopservice method from my activity class. I have the below code but its not working. This is HomeScreen class:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
enablecheck = (CheckBox)findViewById(R.id.enablecheck);
enablecheck.setOnCheckedChangeListener(new OnCheckedChangeListener(){
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(enablecheck.isChecked()){
startService(new Intent(HomeScreen.this, AutoService.class));
} else {
stopService(new Intent(HomeScreen.this, AutoService.class));
} } });
}
This is Service Class:
public class AutoService extends Service {
private static final String TAG = "AutoService";
private Timer timer;
private TimerTask task;
@Override
public IBinder onBind(Intent intent) {
return null;
} @Override
public void onCreate() {
Toast.makeText(this, "Auto Service Created", Toast.LENGTH_LONG).show();
Log.d(TAG, "onCreate");
int delay = 5000; // delay for 5 sec.
int period = 5000; // repeat every sec.
timer = new Timer();
timer.scheduleAtFixedRate(task = new TimerTask(){
public void run() {
System.out.println("done");
} }, delay, period);
}
@Override
public boolean stopService(Intent name) {
// TODO Auto-generated method stub
timer.cancel();
task.cancel();
return super.stopService(name);
} }
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Mar 25, 2009
I have created a threaded service the following way. code...
After I close the application the phone works really slow and I guess it is due to thread termination failure.
Does anyone know what is the best way to terminate all threads before terminating the application?
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Jun 1, 2010
I was wondering if it's possible to call specific methods defined within the AsynTask class from another class and/or service ?
In my specific case I have a Service playing some sounds, but the sound is selected from a List with available sounds...
When a sounds is selected it is downloaded from my home server, this takes some time (not much, let's say around the 3-4 seconds, the sounds/effects aren't big in size)...
So my problem at the moment is that I have a service to play those sounds, and when I select one I wanted to show a progressdialog... The way (if I understood correctly) is to use an AsyncTask, but the only thing the AsyncTask will do is telling my Service to play a specific sound from my server... So there is no "callback" from the service to the Asynctask...
How can I call a running AsyncTask, which sits in another class, and tell him all work is done and thus he can stop showing the ProgressDialog ? Or am I over-engineering it and there are other ways ?
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Oct 18, 2010
I keep getting this when trying to start a new project
ERROR: Unable to open class file C:UsersLeviDesktopAndroidworkspaceDroid1gencomandroidbookdroid1R.java: No such file or directory
I tried changing preferences to alter build path to project, but it still wouldnt work,,,
Is subfolder on desktop a bad place to install Eclipse?
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May 19, 2010
The problem seems to be that the Service class does not inherit the > findViewById() method.
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Nov 19, 2010
I am working through a facebook-sdk example and trying to utilize the collection of classes as provided as a .JAR. I am relatively new to java and eclipse so I expect I am making some obvious blunder.
The issue is that everything seems to compile fine, but when I run the project (using the android emulator) dalvik vm is unable to find the first class I reference from this facebook sdk. ( com/facebook/android/Facebook.class )
As an aside, if I copy the source directly into my project as an additional package everything works fine.
Step 1: I exported the com_facebook_android project as a .JAR file. ( right click project, export, java / jar file ) I choose c:datajagjar as my location to save facebooksdk.jar.
Step 2: I hit properties on the project HelloGoogleMaps, Selected Java Build Path, Libraries, Add External JARS... I the directly selected the c:datajagjarfacebooksdk.jar file.
At this point my project seems to be building just fine ( no errors ).
Step 3: Debug the project and receive the error:
CODE:.................
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Sep 26, 2010
Did a fresh install of Eclipse, JDK and android-sdk.
I am currently receiving this error when creating a new project
[2010-09-26 16:07:56 - Test] ERROR: Unable to open class file C:workspaceTestgencomexample estR.java: No such file or directory
What's the reason for this and how I fix it?
Eclipse Helios 32 bit
java version "1.6.0_21"
Android sdk API 8
P.S. Im new to Android development.
EDIT: I tried most of you solutions, but nothing worked. So I started using my frineds install of Eclipse Ganymeade.
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Jul 28, 2010
I am getting an error , when I try to access the shared preference from within class that extends View.
The Error : "The method getSharedPreferences(String, int) is undefined for the type ViewforRed" , where ViewforRed is my class: Here is the sample code...
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Apr 30, 2010
I am trying to execute a {public void} method in Service, from scheduled TimerTask which is periodically executing.This TimerTask periodically checks a condition. If it's true, it calls method via {className}.{methodName};However, as Java requires, the method needs to be {pubic static} method, if I want to use {className} with {.dot}.The problem is this method is for notification using Toast(Android pop-up notification) and Status Bar.But for this to work, the method must not have {static} modifier and resides in Service class.So, basically, I want background Service to evaluate condition from scheduled TimerTask, and execute a method in Service class.Can anyone help me what's the right way to use Service, invoking a method when certain condition is satisfied while looping evaluation?
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Aug 22, 2010
The error I receive is, "android.content.ActivityNotFoundException: Unable to find explicit activity class {com.droidea.birthday/ EditBirthdayActivity}; have you declared this activity in your AndroidManifest.xml?"
The error seems simple enough, but I don't see a problem with the way I have identified this activity in my manifest file. I have also been unable to see any problems with the activity class itself..............
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Dec 13, 2012
I am unable to mount SanDisk Ultra 32 GB microSDHC Class 10 (FAT32) after flashing khanning AOSP ICS. Card is detected by windows 7 tho'.
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Jul 14, 2010
I have few intents in my manifest file and an AIR application. How can I instantiate AIR application from android.
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Dec 15, 2009
In my application, I have created a ContentProvider. Is there a way for me to instantiate this ContentProvider when my apk is started? RIght now, the ContentProvider only instantiate when some one does a query.
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Dec 15, 2009
In my application, I have created a ContentProvider. Is there a way for me to instantiate this ContentProvider when my apk is started? RIght now, the ContentProvider only instantiates when someone does a query.
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Jan 22, 2010
I cannot instantiate a sub activity. In the logcat I see this line: 01-22 15:14:38.906: DEBUG/dalvikvm(411): newInstance failed: no <init>() This is the line in dalvik that generates that logcat. Here is the action I take to activate the activity in a timer handler. Code...
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Feb 22, 2010
I need to run unit tests for code that references SQLiteDatabase for my Android code; however all my attempts to instantiate this object outside the emulator (on my desktop machine) have failed. JDBC on Android is not being recommended on the Net, hence it's out of the question (I could have provided mock objects very easily that way).
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Sep 4, 2009
My service is not in the same package namespace as my application / activities.
I have
CODE:...........
The issue is that my service is in -- package com.myco.service.myservice and my activity is in -- package com.myco.test.myactivity
My questions are:
1. does my service *have* to be in the com.myco.test namespace?
2. if it doesn't, how do I specify the android:name for my activity and my service to work?
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Sep 30, 2009
i get an error message like 09-30 20:08:24.733: ERROR/AndroidRuntime(949): Caused by: android.content.ReceiverCallNotAllowedException: IntentReceiver components are not allowed to bind to services 09-30 20:08:24.733: ERROR/AndroidRuntime(949): at android.app.ReceiverRestrictedContext.bindService (ApplicationContext.java:136) so i guess you can't bind to a service in an AppWidgetProvider - although you can start the service just fine?
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Feb 12, 2010
I have a service that provides gps coordinates.Here is the code...
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May 31, 2010
I have a motorola milestone that is unable to get any service when I use my AT&T SIM card. I have tried T-Mobile SIM card also but can't get the phone to pick up a signal or anything. Any suggestions?
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