Android :: App.Application Subclass - OnTerminate Is Not Being Called
Mar 19, 2010
From the documentation for android.app.Application:
"Base class for those who need to maintain global application state"
I am using my own subclass to maintain an object that I'm using to query a server. Also from the documentation:
"onTerminate() Called when the application is stopping."
However, onTerminate() in my class is never called. I press the back button while viewing my main activity, and everything seems to shut down. My main Activity's onDestroy() method is called and isFinishing() returns true, but my android.app.Application's onTerminate() method is never called.
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Aug 1, 2010
I don't think this problem is caused from my ListActivity subclass. I think it has something to do with with my BaseAdapter subclass:
package com.mohit.gtodo;
import com.mohit.gtodo.database.TasksDBAdapter;
import android.content.Context;
import android.database.Cursor;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.CursorAdapter;
import android.widget.TextView;............................
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Jun 6, 2010
I'm subclassing Android's view class, but whenever I make an instance of the view from another class, the constructor never gets called (or so it seems). I've implemented both public myclass (Context context) and public myclass (Context context, AttributeSet, attrs) I can't figure out what I'm doing wrong. Do I need to override onDraw and onMeasure?
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Nov 16, 2010
I've found a example on this site on how to make a subclass of the application for android.
I've created this code
package mensand.test;
class TestApp extends android.app.Application { }
Added this line to the manifest
android:name="mensand.test.TestApp"
And when i run the app it's starts with a force close message.
When i remove the line from the manifest all runs ok
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Jun 11, 2010
I have put some instructions in onLowMemory() callback and want to test the same. Is there a "direct" way to test onLowMemory function of the application subclass?
Or will I have to just overload the phone by starting many apps and doing memory intensive tasks?
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Oct 16, 2010
In my Android application, I overload the Application class, and I updated the tag in my manifest. This application also creates an Android Service. I have put some logs in the onCreate of my Application class, and I see it being called twice. The first time is when my application gets launched (this is expected) and then, it's usually right after the Service is being created. the log also shows that a second instance of the Application is being created. (I print the "this" value and they are different). I thought the Application would be created as a singleton. Is that happening because I create a Service?
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Jun 24, 2010
I was using Advanced Task Killer Free and found a running app called poor, unsure what it was so used ATKF to kill it but after checking a little while later it was running again, killed it again and again checking a few minutes it was running again. Becoming increasingly concerned I've now uninstalled every application (a number of them had updated) except ATKF and Google maps (which also updated recently) but it still seems to start itself.
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May 15, 2009
I have a Activity and I have a class which extends this Activity. In this subclass I call:
startActivity(new Intent(this, CameraView.class))
Which should start the "CameraView" Activity. However, I always get this error:
CODE:...........
If it makes any difference the subclass creates a ListView and when a row of the ListView is clicked it calls startActivity();
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Nov 24, 2010
I have one subclass which extends Dialog class, it seems I can not use startActivity() function to start a new Activity in this subclass which extends Dialog class, how to resolve it?
How to start a new Activity in a Dialog subclass? (In my customized dialog subclass, I have one button, when pressed, I would like to have a new Activity start).
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Nov 4, 2009
I have subclassed ArrayAdapter to set the color of text to RED if the string does not contain 100%, this has been added to a ListView. The problem is that some of the rows show as red when they contain 100%.
CODE:.....................
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Jun 2, 2010
I have a ListActivity which is being filled via an internal class "OrderAdapter" - while the list is being populated I set various OnClickListeners on the TextView elements which should open the same view with different parameter values per line. My problem I have is that no matter which entry in the list I click I will always get to a view with the same parameter ID (it's always the ID of the last line in the list) - even though the output of the ID varies if I output it to the TextView.
Here is the code of the internal class which populates the list in the ListActivity:
CODE:.............
Any ideas why it always opens the view with the same ID even though the TextView "tvCheatTitle" displays a different value in every line?
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Apr 19, 2010
I'm implementing custom widget exdending a View class. But I've found that View's protected field (e.g. mLeft) is not accessible from subClass
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Mar 16, 2010
I am having a problem with an application I am in the middle of writing which is causing me some serious headaches.
The situation is this:
The application allows the user to configure several different kinds of information in several activities.
One of the activities, which is a subclass of Activity, takes data from the user and stores it in a shared preferences instance that I create manually and edit in code. This activity requires a complex screen layout that I do not believe would work well with a PreferenceActivity, hence me rolling my own in this case.
Another one of the activities, which is a subclass of PreferenceActivity, is a straight forward list of preferences, each with a list options - standard stuff.
I am finding that any data that I store from the first activity, my bespoke preference screen which manually adds the data using a StoredPreferences.Editor instance is overwritten once the user selects an option in my activity that extends PreferenceActivity.
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May 23, 2010
I've run into an early problem with developing for android. I've made my own custom View (which works well). In the beginning i just added it to the layout programmatically, but i figured i could try putting it into the XML layout instead (for consistency).
So what i got is this:
main.xml:
CODE:..........
(Theres obviously more, but you get the point)
Now, this is the stacktrace:
CODE:...........
Why cant i cast my custom view? I need it to be that type since it has a few extra methods in it that i want to access. Should i restructure it and have another class handle the logic, and then just having the view being a view? I'd really like this to work though.
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Apr 30, 2010
I get a NullPointerException calling a Superclass Method in Subclass Inner Class Constructor... What's the Deal?
In my application's main class (subclass of Application), I have a public inner class that simply contains 3 public string objects. In the parent class I declare an object of that inner class.
CODE:...................
After I instantiate the object in the constructor, I get a runtime error when I try to assign a value in the inner class with a superclass method.
Can you not call superclass methods in the subclass constructor?
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Oct 26, 2010
I am running into an issue with the way my asynctasks are executed. Here's the problem code:
firstTask = new background().new FirstTask(context);
if(firstTask.execute().get().toString().equals("1"))
secondTask = new background().new SecondTask(context);
What I'm doing here is creating a new asynctask object, assigning it to firstTask and then executing it. I then want to fire off a separate asynctask when the first one is done and making sure it returns a success value (1 in this case). This works perfectly on Android 2.0 and up. However, I am testing with Android 1.5 and problems start popping up. The code above will run the first asynctask but doInBackground() is never called despite onPreExecute() being called. If I am to execute the first task without the get() method, doInBackground() is called and everything works as expected. Except now I do not have a way to determine if the first task completed successfully so that I can tell the second task to execute. Is it safe to assume that this is a bug with asynctask on Android 1.5? Especially since the API says that the get method has been implemented since API 3. Is there any way to fix this? Or another way to determine that the first task has finished?
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Sep 7, 2010
Do static variables of an ApplicationContext subclass left untouched when the process is killed?
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Sep 21, 2010
There is an application in Captivate called "AT&T Hot Spots". What is this application and how does it work? I read about AT&T Wi-Fi, a free Wi-Fi access from AT&T at various locations in US. I read that it is free for iPhone users and some BB users. I am not sure if it is free for us Captivate users. How do one find out.
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Jun 4, 2010
I was reading through app suggestions and someone mentioned an app called mp3 Download that basically functions like limewire, letting you search and download mp3's to your phone. Does anyone know anything about this app and whether it is good or not? Or have suggestions for a similiar app? It had mixed reviews at appbrain and when I searched here it came up with a bunch of other threads.
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Sep 22, 2010
I was told by a few friends that the iphone has an app that allows you to hold your phone up to a song that you dont know and it tells you the name.Does android have anything like that?
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Oct 20, 2009
I've created a simple android game, based on the Lunar Lander sample, and I'm having a problem with handling key events.When the activity starts, the only keys that onKeyDown or onKeyUp get called for are the dpad up/down/left/right keys.Neither the menu, back, or dpad_center keys trigger onKey methods. However, once I've pushed one of the dpad up/down/left/right buttons, pressing the menu, back, or dpad_center keys do trigger these methods. I'm not getting any errors, or any indication of what's going wrong.It's possible that the focus is set wrong - the activity is started from a button on screen, so it could be in touchscreen mode. If that's the case, shouldn't touching the back button get me in to the right focus mode so that I can catch the event?I'm using the emulator from SDK-1.5r3.I have not been able to try this on a real phone yet.
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Aug 27, 2010
I saw it on the market but forgot to install it. It displays the number of remaining minutes, texts and data left for the month if your on a monthly mobile phone plan.
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Apr 6, 2010
I'm working on an application which allocates lot of memory and hence I'm bound to get OutOfMemory. I want a way to get notified when system is running short of memory so that I can stop processing further, notify user and release as much memory as possible.
According to official Android documentation there is a callback onLowMemory from the system. I have a class which extends android.app.Application and I have overridden onLowMemory() method. This class has entry in the in the application tag of AndroidManifest. However it never gets called in my case. Do I need to register for this event using AndroidManifest or any other means?
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Jan 1, 2010
In one of my applications I programmatically open the context menu when something is clicked in my MapActivity overlay. This works perfectly under 1.x as well as on my 2.0 Milestone. I've used showContextMenuForChild() historically, but openContextMenu() does that same thing.
As expected onCreateContextMenu() is called to build the menu and then onContextItemSelected() is called when something is selected. So far all is well.
The odd thing is that under 1.x the onContextMenuClosed() method is called when I press the back key, but not so under 2.0. This confuses states for my app since I need to know whether menu is shown or not - or maybe there is a way to know this that I have not (yet) figured out...
Is this a deliberate change or should I file it as a bug? Googling comes up pretty dry (stuff that is over a year old).
Anyone with a 2.0.1 Droid that would care to test whether this has already been fixed? (The ETA for Milestone 2.0.1 seems hazy still, but it appears that at least one of my reported bugs has been fixed in 2.0.1 event though it isn't flagged as such.)
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Oct 27, 2010
Is there a way to make sure onSurfaceCreated is called only once during startup.
Currently in my app it gets called once with say 800x480 then it gets called a second time with 480x800. I guess this is probably due to a call to setRequestedOrientation in onCreate. Is there any way to make sure the app starts in a particular orientation, to prevent orientation changes, and to have onSurfaceCreated get called only once during start up?
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Mar 3, 2009
I have over-loaded the onFocusChanged() in my classes which inherits from LinearLayout.
CODE:...........................
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Apr 16, 2010
i use a ScheduledThreadPoolExecutor combined with a ThreadFactory, their all combined should cause an unchaught Exception to be logged so that i can see what happening if any thread is dying in the ThreadPool:
threadPool = new ScheduledThreadPoolExecutor(poolSize, new ThreadFactory());
My ThreadFactory, also sets a UncaughtExceptionHandler :
public Thread newThread(final Runnable r) { final Thread thread = new Thread(r); thread.setUncaughtExceptionHandler(new ThreadLogger()); final int counter = count.getAndIncrement(); final String name = threadName + counter; thread.setName(threadName + counter); if (Logging.isLoggingEnabled()) { Log.d(LOG_TAG, "Thread created :" + name); } return thread; }
The ThreadLogger :................
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Mar 7, 2009
I have been struggling to get onLocationChanged called, but I'm not sure it does not. Here're my code
criteria = new Criteria(); criteria.setAccuracy(Criteria.ACCURACY_FINE); criteria.setPowerRequirement(Criteria.POWER_LOW); criteria.setAltitudeRequired(false); criteria.setBearingRequired(false); criteria.setSpeedRequired(false); criteria.setCostAllowed(true);
String locationContext = Context.LOCATION_SERVICE; locationManager = (LocationManager)context.getSystemService (locationContext);
String provider = locationManager.getBestProvider(criteria, true);.................
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Jul 5, 2009
Am I right to assume that onSaveInstanceState() is not normally called (which my logging indicates) - but only when the system is forced to kill an Activity. If so, since onPause() does not receive a bundle, what is the best way to save state that should be restored the next time the Activity is created?
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Jul 6, 2010
I have a problem with the method "onActivityResult".
I create a new Activity from my main activity:
CODE:.........
The new Activity is ended like this:
CODE:.............
But the Method onActivityResult seem to be not called
CODE:................
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