Android :: OnLocationChanged Does Not Get Called?

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);.................

Android :: onLocationChanged does not get called?


Android :: How Can I Frequently Get OnLocationChanged?

Feb 25, 2009

In my application I want onLocationChanged() to be called frequently. Is it possible? Actually, I should get the accurate accuracy of the location. How to do it?

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Android :: OnLocationChanged Not Calling / Way To Fix?

Apr 30, 2010

I write a class which implements LocationListener. Its just listening to the location. I tried the code in Tatoo, but its not working. The code is...

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Android :: OnLocationChanged Doesn't Draw / Why Is So - Fix It

Jul 2, 2010

I've a problem, I call a method that draw a circle over a canvas inside onLocationChanged but it doesn't do anything. Can anyone tell me why ?

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Android :: OnLocationChanged Not Working As Expected

Jul 5, 2009

I'm developing an application wich has a location push service that start at boot. The main responsability of this service is very simple, just inform the location of the phone based on the *requestLocationUpdates* parameters. I don't care if it's using the network or GPS, obviuosly I'd prefer the most accurate one, but if the GPS is turned off, I don't mind to receive the network less accurate location fix. My problem is that the service isn't working as I expect, since I deploy the app on my HTC Magic, and after a lot of miles driving my car, only the first fix is shown, but no one else. Here some snippet of my service (BTW, I've checked with DDMS that the service is launched at boot):

CODE:..................

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Android :: Location Object Passed Into OnLocationChanged Is Null?

Aug 8, 2010

I have an activity that implements LocationListener in my application and my onLocationChanged method has been working perfectly up until recently. For some reason the Location object being passed into the method is null. My question is, why is it null? Does it pass in a null object if it cannot acquire a location?

My GPS is on and I have it set to pull a location from the GPS, and I know my GPS can get a fix on me as I used Maps and had it locate me.

Also, I have the permission for my app set as:

CODE:.................

I don't believe permissions is the issue though, as my activity was working beforehand and I have not altered the permissions since then.

Here is the code that determines the provider of the location object:

CODE:.............

Here is the LogCat output of the error:

CODE:..............

I have tested the same code on another device (an HTC MyTouch 3G to be precise) and it works flawlessly with the GPS, however on my Motorola Droid it crashes.

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Android :: Android 1.5 - Asynctask DoInBackground Not Called / Method Called

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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Android :: How To Called Mp3 Download?

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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Android :: An App Called Listen?

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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Android :: OnKeyDown Not Always Called In App

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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Android :: Whats That App Called?

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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Android :: OnLowMemory Not Getting Called

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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Android :: OnContextMenuClosed() Not Called Under 2.x

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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Android :: OnSurfaceCreated Called Twice

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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Android :: When Does OnFocusChanged Get Called

Mar 3, 2009

I have over-loaded the onFocusChanged() in my classes which inherits from LinearLayout.

CODE:...........................

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Android :: UncaughtExceptionHandler Not Called?

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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Android :: OnSaveInstanceState() Normally Not Called?

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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Android :: 1.6 - OnActivityResult Is Not Called

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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Android :: OnTouch Not Called?

Aug 4, 2010

I'm trying to start activity by sweeping across the screen, it works fine for all the other screens, just this screen that doesn't fire the onTouch at all? Would you mind helping me? I've tried debugging it and still have no idea at all. Below are the codes, sorry for not putting snippets only as I thought I might did something wrong elsewhere

I'm also looking for advice on implementing sweeping to change screen. I've read about ViewFlipper and I know it will work very well, but I've around 8 screens with different backend coding needed.

CODE:.....................

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Android :: Why OnKeyListener() Not Called

Sep 12, 2010

I defined an EditText-field and I want to be informed when the user edits that fields.
So I thought: simple - I add an OnKeyListener and so I did. But even though the text field gets edited (and even displays the entered/modified text) I don't get any callback, i.e. the LOG-output doesn't show up.

CODE:......

why that callback is never called?

Android is really full of oddities! It seems that almost nothing I touched so far worked immediatly as one would expect. And - believe it or not - I have LOTS of experience with GUIs, esp. in Java (AWT, Swing, SWT, you name it...) But Android is a really tough beast!

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Android :: How Can GetContentResolver() Be Called

Sep 20, 2010

I want to know the context in which getContentResolver() is called ?

I have a scenario like this : I have an activity A that calls a method myFunc() of class B whcih is not an activity. So, in class B I have to use getContentResolver(). I directly called getContentResolver(). It was showing error. Then I called myFunc(Acitivy act) from the activity and called act.getContentResolver() which solved my problem. My question is is this the only way to call getContentResolver(), which means it can be used in context with activity or can be used alone.

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Android :: Mouse OnListItemClick() Is Not Being Called

Jan 11, 2010

i've tried displaying a simple list in ListActivity, it is working fine but the problem i got is with the listener.. when i click on any of the list item using the mouse onListItemClick() is not being called, strangely it is working fine with the key-up&key-down keys...................

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Android :: Why OnListItemClick() Not Getting Called Back

Jul 16, 2010

I have a ListActivty and I overload the onListItemClick(ListView listView, View view, int position, long id) in my List Activity. My question is why onListItemClick() not getting called back (i have breakpoint in my debugger) when I have an ImageButton in my list item view (the one view created by my list adaptor from cursor)?

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Android :: How Do I Know If Activity.onStop Is Being Called?

Dec 3, 2009

I need be able to tell if Activity.onStop() was called because my application is moving to a new activity, or if it was closed because the user pressed the "Home" key or hit the back button from the bottom of the activity stack.The reason is because I need to know when it is appropriate to shut off music that is playing in my application (A game). There is nothing more annoying than hitting home and having something playing music in the background.However, Activity.OnStop() is called for each activity change, and I don't want to suspend music when moving between multiple activities in my app. I just can't find a way to differentiate between going home and going to a internal activity.Am I perhaps hooking into the wrong events?

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Android :: OnKeyDown Not Being Called In TabActivity

Jun 20, 2010

I am trying to override the behavior of a TabActivity that has other Activities as children. I have made all of the children activities return false in onKeyDown so that the key will propagate through to the parent.However, this is not the case.The only key that is being recognized is the search key.Back, menu, and home are not being overridden.

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Android :: Method Called After Release

Sep 22, 2010

I'm getting this error ( in the end of this post) which I guess I understand it's because I'm calling something after releasing it.. but I can't find a wy to work it around.I've tried all combinations.. I've tried: mCamera.setPreviewCallback(null); This class, where the surfaceview is implemented can be accessed by 2 different classes one that doesnt implement surfaceview and other that does the error just shows me when I go from the activity that uses the camera to the activity that also uses camera.I don't know what else to do.

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Android :: Is OnUpgrade Method Ever Called?

Jul 2, 2010

Is the onUpgrade method of SQLiteOpenHelper ever called? If so, when is it called and by what? Or if it is not called by developers, then why is it there? What should be done in the method I have seen examples where it drops all the tables, but then a comment says that dropping all the tables is NOT what you should do.

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Android :: GetView Method Used And Where Is It Getting Called?

Sep 1, 2010

I am new to Android development and have been following the tutorials available on the Android website. I am currently on the section of tutorials for Views, specifically the one for Grid Views: Hello, Grid View Tutorial.I am having trouble understanding how views are made through an adapter. I understand that you must override the getView() method in your adapter class and in this method is where you define how your Views are set up. What I don't understand is where does getView() actually get called? Perhaps I've got the wrong kind of mentality here, but in the code below (the Grid View tutorial) I don't see any calls to getView() (or any other things used in the adapter class such as getCount()).

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Android :: Getting Your Phone Called A Droid

Jun 2, 2010

I read around and I saw that people do not like it when "uneducated" people call their android powered device a droid.

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Android :: OnItemClick Gets Called As Callback?

Dec 31, 2009

Could someone please shed the light as to where onItemClick() function gets called as callback when I click on the item of a ListView?

In core/java/android/widget/AdapterView.java:

onItemClick() belongs to the interface OnItemClickListener of AdapterView.

The listener is set through setOnItemClickListener() of AdapterView.

The listener is only invoked in performItemClick() of AdapterView.

The listener is also invoked indirectly in performItemClick() of ListView.

But, I still don't know where exactly onItemClick() of the listener will get called when I click on the item of a ListView. Logically it should be like:

device -> kernel driver -> dalvik VM -> my app.

Could someone please tell me the exact code that calls onItemClick() when I click on the item through the device?

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