Android :: GPS App Not Closing Connection
Jun 5, 2010
Fairly new to Android, so just trying to work out:
I have a simple Maps app that plots a couple of locations. It's a demo for a potentially bigger app later. The one thing I would like to do is make it exit correctly. I want to assume that when a user hits the "Home" or "Back" button on the phone, that they have exited the app. I want when this has happened for the GPS process to shut down. I can't seem to find any examples of how to do this correctly. I have an onDestroy() subclass with a super.onDestroy() method but this doesn't seem to cut it. I've tested on my phone and while everything else seems to work fine, this is bugging me. I keep seeing the GPS icon in the notifications bar. To give you an example, this doesn't happen when you leave GoogleMaps.
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Oct 14, 2009
I'm using ThreadSafeClientConnManager to manage a pool of client connections, because my application has several threads, which are simultaneously connecting to a webserver.
Abstract sample code:
CODE:..............
Now lets say on of this threads is downloading a large file, but then the user of my application is switching to another activity/screen. Therefor the file is needless and I'd like to abort this download connection.
In ThreadSafeClientConnManager I found this method: public ClientConnectionRequest requestConnection (HttpRoute route, Object state) Returns a new ClientConnectionRequest, from which a ManagedClientConnection can be obtained or the request can be aborted.
So far I've been using:
CODE:.........
Now from what I understand, I've to use:
httpclient.getConnectionManager().requestConnection(HttpRoute route, Object state);
And that's the point where I'm stuck. I assume that for the route I can just use new HttpRoute(new HttpHost("10.0.0.1")) or whatever my server is, but what to put in for Object state?
And second, as soon as I've the ClientConnectionManager I can call getConnection(long timeout, TimeUnit tunit). But then from there, how I do I execute my HttpGet httpRequest = new HttpGet(URL_TO_FILE); as I did before with HttpResponse response = (HttpResponse) httpclient.execute(httpRequest);?
I've been gone through the documentation and tried out quite a few different things, but I wasn't able to obtain a working solution. Therefor any suggestions and/or code examples are more than welcome.
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May 12, 2010
Whenever a application needs internet and connection fails, I get a message dialog
Connection failed
This application requires network access. Enable mobile network or Wi-Fi to download data.
and two buttons, Settings, Cancel.
How do I detect there is no internet connection?
How do I popup a same dialog in my application?
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Oct 27, 2010
I'm coding a very basic FTP client on top of my application and I have 2 activities. The first one is the file explorer and the second one is the image viewer. Once I click on the image filename on the explorer, I want to pass the connection to the other activity to handle extra stuff. Basically, I want to keep the same org.apache.commons.net.ftp.FTPClient object (which handles the connection) alive in-between the 2 activities. I know I can't pass an object inside an intent so I don't know what my best bets are.
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Jul 23, 2010
What's the technical term for being able to have voice connection and data connection simultaneously? Like AT&T was promoting heavily for a while.Apparently, the new T-Mobile Vibrant has this capability. A friend got one and was accessing the web while talking to me, double jealous now.I have benn lusting after the Verizon version, Fascinate, and wondering if there is any chance it will as well.
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Sep 7, 2009
If my screen locks while I have a wifi connection, then the connection is lost when I unlock the phone.First, is this perhaps deliberate, to save power? Also, either way, when I unlock the screen and go into wifi settings, I see that the phone is trying to make a wifi connection, but it never succeeds, even though it's my home network and I'm in the same room as the router. It just states 'Obtaining address.
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Sep 15, 2010
Long time reader, first time poster here. How does one know if the Epic is using the wifi connection as opposed to using the 3G connection? When wifi is connected both that and the 3G connection shows at the top. So which one is in control per se? And how can it be verified?
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Sep 23, 2009
Is there anyway to close one activity from another? I want to go through a whole bunch of activities once i get to the last one close all the previous ones. i cant close them as i move on to the next one because i want to be able to go back unless ive got to the last one.
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Jul 21, 2010
I currently have an app that I'm developing launching the web browser, running a page on my site that is reading a cookie/editing a database, and then Redirecting to "myapp://X/Y". This is all working as advertised. Is it possible to close the browser after I've navigated back to my app via the redirect? Perhaps a flag to set when starting the Intent that forces the browser to close or, at the very least, be removed from the stack so it's not visible when a user quits my application?
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Oct 23, 2010
I'm using Copilot Live USA on my Droid and quite often when I'm testing it at home, choosing different routing options or making other changes to see what effect they have, the app will just close (sometimes after being unresponsive), leaving me at the home screen. I had a similar problem while using it in the car today - a call came in and after the call was completed, Copilot was closed. In all cases, long-pressing Home and selecting Copilot from the recent apps list, results in the app starting from scratch - displaying the splash screen and so on.
Since Copilot takes up a whopping 33+ MB (effective, according to system panel, plus another 12+ MB shared), my first thought is that Android is killing it to allow some other process to run. This is despite the fact that the Droid is listed on the Copilot web site as a compatible device. Is this a common issue with Copilot on the Droid, and is it less common on phones with more RAM?
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Nov 11, 2010
I'm opening an Activity using this:
startActivity(new Intent(Parent.this, Child.class)); And on the child, I have this code on the onCreate function (the if contains more than just true, of course): public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); if (true) { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setPositiveButton("OK", null); builder.setTitle("Error"); builder.setMessage("Connection error, please try later.") .show(); finishActivity(0); return;}}
Why is the activity not closing? I get the alert box, but then I have to tap the "back" button to go back.
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Mar 17, 2010
In my application you can navigate through several Activities until the Activity stack is quite deep.
We'd like a button on every Activity that will take you straight back to the main menu - i.e. pop all Activities from the stack except the first one.
I've put the button in a View that I can easily put on every Activity in the application, but I can't figure out how to close several Activities in one fell swoop.
(If possible, it would be good if the View could work out how many Activities to close by itself - i.e. detect how deep on the stack its own Activity is.)
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Dec 12, 2009
I've noticed lately that a lot lately that files I've downloaded to my Droid, mostly PDFs though it's happened to a spreadsheet or two, will be viewable at the time, but corrupted and unable to open when I reentered the apparently to view a given file at a later time. Is this something I'm missing, like not closing the file for example? Would that even make a difference?
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Nov 24, 2010
Need help closing/accessing my views in a simple app (included an img of my program layout) but I might have been too confusing. Basically, I have an app that has a main menu where the user can click a button to open a camera. The user then snaps a photo and it is displayed on a page. The user will then click another button that detects faces. If faces are detected, the user is sent to a final page that shows the cropped face, etc. I give the user the ability to return to the main menu or snap a new photo.
Let's say a new photo is snapped and the user does it a few more times. Now I have multiple saved instances of old snapped photos (presented on the layout). How do I kill the previous instance (the layout from before he decided to snap a new photo)? So when I try to close the app it doesn't go back to the previous instance (displayed layout of said snapped photo). I am so confused on this one thing.
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Nov 13, 2010
I got a Samsung Galaxy S, through Bell and it has 2.2 on it... it has a feature that allows me to end applications like going CTRL+ALT+DEL in windows, because it shows the battery usage so it makes me a little more concerned about that, but anyways now some apps are force closing, crashing sometimes.. is it best to not force close any apps? has anyone had the same problem for the same reason? Some apps i just cant "quit" like in windows.
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Oct 17, 2010
In Android is it possible to switch focus back and forth between an open dialog box and the main view without closing the dialog box. The preferred method of switching would be to click on the unfocused view so that it obtains focus.
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Nov 11, 2010
in my app i am having an Activity that launches another Activity ontop of it. The second Activity is meant to provide controls like next and previous for the first activity.How can i pass button events between the two activities that are visible at the same time without closing the Activity with the controls?
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Aug 3, 2010
I am doing small project "Location Finder" in android.In that i have used different menu items,which include Close menu.On click of that menu i want to close the application.i have tried it with finish(),but it just the finish the current activity.
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Dec 12, 2009
I have a ListView that has some minor visual preferences that are set in a PreferenceScreen. These preferences are simple booleans to show or not to show some specific TextViews on each item in my ListView.
Anyhow, when these preferences are changed, I need to notify my ArrayAdapter that the data has changed in order to get the list redrawn. However, doing this via an OnSharedPreferenceChangeListener wouldn't really be optimal because there are several preferences that you can change, that would cause an unnecessary amount of updates to the ArrayAdapter.
So, to the question: How can I identify when my ListActivity has occurred on the screen after closing my PreferenceActivity, which I then could use to check for changes in the preferences, and only then notify the ArrayAdapter.
The ArrayAdapter being an inner class of my ListActivity, which is set as a ListAdapter.
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Jan 23, 2010
I downloaded the doom for android apk from Doom.for.Android.apk - doom-for-android - Doom for Android (FREE) - Project Hosting on Google Codeand installed it on my hero and whenever i attempt to open it i just get force close right away. anyone having this problem or know how to get it to work? i tried restarting my phone but didnt help.
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May 28, 2010
I updated my brothers phone from 1.5 to the 2.1 de03 from sdx, now his phone keeps force closing, Sent from my SPH-M900 using Tapatalk
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Nov 20, 2009
I've a couple functions that basically parse XML but it's not XML it is parsing something similar. I use them in PHP to break apart large strings so I converted them to Java for this, but when I use them they force close. I use this code to call them....
CODE:..........
That's the gist of it. I know the string "str" is good, checked it, but if I run these lines I get a force close, if I comment them out I do not. The methods are below. See anything wrong?
CODE:...................
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Sep 28, 2010
I have been trying to add a map to my application, I have followed instructions on the android developers HelloGoogleMaps tutorial but my map is just force closing when I run the maps option. I have obtained my api key logged permissions in manifest (Internet, Maps) and logged intent. When I look at the debugger the intent line always shows up but I have put in test code and the intent is fine but it seems to be saying it cannot locate the class;
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Feb 10, 2010
When I load my application I also load and Android Service that helps me download files from the internet.The user may have 1 or more downloads at any given time, all in their own Thread which is managed by the service. If the user presses the home button I do not destroy the service but instead let it run, however, if the user presses the back button I do stop() the service as I felt this was the right thing to do (the user would not want stray services running).
This works OK unless there are stray Threads that have not completed yet (this could happen if the internet connection is not active etc.).How could I manage this? How could I stop all Threads as I have no reference to them...or somehow command android to stop my service once all Threads are complete and my app has closed?
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Mar 4, 2012
I installed android market 3.4.4 on my android 2.3.3 device. Whenever trying to install/update/uninstall an app it force closes.
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May 14, 2013
I know Android manages its RAM differently than modern computer operating systems, but I have a problem that's been happening that I think is related. Apparently, whenever I run large apps or games, or when apps increase in size significantly, Android freaks out and kills some or all apps, returning you to the home screen. When looking at the running applications list, it shows 80MB used, 22MB free, however adding what's currently running up doesn't come anywhere close to 80 MB of space!
Settings 9 MB
My Data Manager 5MB
ADW Launcher EX 11MB
Google Voice 2 MB
com.android.qualcomm 1 MB
Android Core Apps 8 MB
Google Services 6 MB
Android Keyboard 5 MB
47 MB total
Reported totals:
81 MB used, 23 MB free
What is going on here? Why, when I run web browsers, do they randomly quit out? What is using so much extra space?
Android 2.3.5, Gingerbread, Blu Dash 3.5, Rooted, stock ROM
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Nov 28, 2013
I've searched the internet/XDA far and wide for an answer but can't seem to find a solution that fits my exact issue. I'm trying to mod my android keyboard to have red text color instead of white. I decompiled LatinIME.apk and edited styles.xml found in the Values folder. I only changed TWO lines which contain the hex color code for white- "#ffffffff". I changed them to the corresponding hex code for red which looks like #fff44444. I recompiled using ApkMultiTool. I deleted the resources file using the keep folder method and everything compiles fine. I then pushed the app to system/app making the correct adjustments to the permissions. I reboot the phone and keep getting the error message of, "unfortunately, Android Keyboard has stopped." When I go into my sms app and try to open the keyboard to send a text the message pops up again, however in the background my keyboard pops up and it DOES have the red text color I was looking for. So my modifications worked but I can't get the apk to run correctly. The ONLY file I made any modifications to was styles.xml.
I tried to wipe data for the android keyboard as well as my user dictionary but to no avail. I'm using a t-mobile G2X running Eaglesblood 4.0.4 AOSP.
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Apr 12, 2012
As many of you know, back in October I had to make an emergency switch from Windows Mobile to Android. As you've all read in my posts, it has been a very "mixed" experience with both some impressive and downright pathetic discoveries, but one of the worst things about it (beside the complete inability to sync) is the way that Android closes your programs whenever it feels like it instead of letting you close them. Sometimes I'll be browsing the internet in Opera Mobile and I'll switch over to the email program briefly to check something, when I hold down the "home" key and pick OM from the list of recently used programs, it starts it all over again, and I know for a fact I didn't choose "exit".
Sometimes I'm glad Android "cleans up" (like if I back out of a program that has no "exit" option) because it saves me the trip to the task manager later, but is there any way I can prevent it from closing stuff I'm actually still using?
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Jun 27, 2010
I noticed that LauncherPro has been acting weird. It'll constantly restart (the icons would disappear then reappear in 5 seconds), it'll lag at redrwaing the widgets/icons when rotating the screen, and it'll force close on me once or twice a day.
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Jul 5, 2010
I use the following code to receive the data using UDP. When I click the back button my screen visual is closed and it shows the home screen. But a thread is working in the background (it receives the data from the UDP server). When I close the application I also need to stop the thread. How to stop a thread? Code...
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