Android :: Timed Trial Expiry?
Feb 20, 2009
Does anyone have a somewhat secure method of expiring a trial version of an app a certain amount of time after an install? I do not want to use a server, because I am making a game that shouldn't need permissions. I would like the expiration data to survive an uninstall, but I am ok if it doesn't survive a manual edit of the database. Do an application's database entries get deleted when an app is uninstalled? How about preferences? Local files? Other methods?
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Aug 30, 2009
I am submitting an application to the android developer challenge 2, but i would like to sell my application after the competition is over. In the terms and conditions google has mentioned that in case if i have to sell the application after the contest is over I have to set a timed expiry date.But while going through the steps for publishing the applications it is mentioned that the certificate validity limit should be a minimum of 22 October 2003."1.Your application must be signed with a cryptographic private key whose validity period ends after 22 October 2033. " Is it possible for me to set the expiration date as 120 days in the certificate? If not what is the best proccess that i should be following to set a timed expiry period?
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Sep 12, 2010
I got the email last night about the new swype beta. I could not find an answer anywhere so I thought I would ask here. The swype version I have has a skin that I found someplace (i can't remember where) do you think this one will expire too or will I be able to keep it? If this is in the wrong place please move it. I know it is not evo specific.
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Nov 2, 2010
What happens when you uninstall a paid app before the trial period ends and you re-install? Are you automatically charged or do you get the remaining time from that 24 hours?
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Jan 17, 2010
I just came across this cool app loaded it and using it today. Love it. In reading more there seems to be some conflicting info. Is the app a free trial or free free?
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Aug 12, 2010
In my Android application I am getting a very strange crash, when I press a button (Image) on my UI the entire application freezes and after a couple of seconds I getthe dreaded force close dialog appearing.
Here is what gets printed in the log:
CODE:................
This is the code for the Button (Image):
CODE:..................
If I comment the following out the pressing of the button (image) doesn't cause the crash:
CODE:.................
The above code calls down through several levels of the app and into the native layer (NDK), could the call passing through several objects be leading to the force close? It seems unlikely as several other buttons do the same without issue.
How about the native layer? Could some code I've built with the NDK be causing the issue?
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Sep 9, 2010
I'm writing an app, that lets users subscribe to notification for TV transmissions. Currently the user can choose email, sms or push, but it all feels a bit overkill for a simple timed notification. I wonder if I can tell Android to simply "show this Notification at 11:30"?
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Jun 10, 2009
I am planning to release a trial version of my app and am looking into best ways to implement the logic. My lite version of the app would have all the features but will be time restricted. I see a couple of issues:
- Currently there is no mechanism built into android that allows an app to be closed. I see that you can close the main acitivity, but the user can always press the back button and go back into the app.
- After trial period, the user can always un-install the app and re- install it. What do I do to prevent this from happening?
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Jul 21, 2010
I am looking for an offline GPS program.
But I would like to try it before purchasing it as these programs are quite expensive...
Does anyone know about one (or several!) GPS program that allow the user to try it for some time before purchasing it?
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Oct 30, 2010
Is there any way to receive the installation date of an android app? Or any other suggestions on how to accomplish a 30 day free trial version?
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Feb 25, 2009
Is there a way to detect upon install or first use, if another app (in this case, the trial version of the same app from the same developer with the same key but different package name) is still installed? If yes, then the next question is can one app uninstall another with the same key, if the user gives the go ahead? In my case, the app has a listener for some events, and I don't want the trial AND the full copy both firing up on those events.
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Sep 25, 2010
Looking for an app that will give me 0-60, 1/4 mike times, etc. what is a good one?
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Nov 18, 2009
I have a situation occurring intermittently with an application where I receive the following message. It's probably something to do with a Thread. The application seems to stop, but I get the following message and I'm not sure what it means: WARN/SurfaceComposerClient(2106): lock_layer timed out (is the CPU pegged?) layer=1, lcblk=0x424800a0, state=00000043 (was 00000043). I see others have had this issue, but I don't see a solution or explanation (that I can understand :-) ).
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Nov 9, 2010
Is there any way to show a modeless dialog--a dialog that allows the user to interact with whatever was on the screen before the dialog but also allows the user to interact with the dialog if pressed?
I know of Toasts, but they don't allow interaction with the popup.
I know of Dialogs, but they're modal and don't allow interaction with the background.
I know of Notifications, but I want something that is visibile on screen.
I basically want to be able to be playing a game or something and a popup appears that I have a new email or something. I can click it to view my email, but I can wait for it to go away if I just want to continue playing my game. Is this possible in Android?
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Jun 10, 2009
I am planning to release a trial version of my app and am looking into best ways to implement the logic. My lite version of the app would have all the features but will be time restricted.
I see a couple of issues:
- Currently there is no mechanism built into android that allows an app to be closed. I see that you can close the main acitivity, but the user can always press the back button and go back into the app.
- After trial period, the user can always un-install the app and re- install it. What do I do to prevent this from happening?
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Mar 19, 2009
First I will explain my situation.Then, I would greatly appreciate constructive dialog on how other developers feel similar situations should be managed.I wrote a simple app in November.I offered it for free on the Market for two reasons.One, Google hadn't implemented paid apps yet, so I had no choice.Two, by my own admission, v1.0 was too simple too garner payment.However, in the app's documentation, I requested donations toward future development.Out of thousands of installs, I received nothing.This week I finished a considerably fancier version of the program. Given hundreds of hours of unpaid development, I decided to charge a few bucks for the new version.I split the app into lite and pro versions.The lite version has all the new fancy features enabled but is limited in how large a document can be created (spread sheet, I limited the number of rows/cols, admittedly unlimited in the earlier version). The pro version went to Market as a new app, the lite version on top of the old app to retain the long feedback history.
Since the Market provides no way to downgrade, I put the old unlimited version on my website and put directions in the new lite version in multiple places explaining how to revert to the old version.Thus, any user dissatisfied with the rol/col limit could restore the EXACT functionality they had before upgrading to the lite version.Incidentally, the 325 character blurb allotted on the Market was insufficient to list the new features and the lite version's limitation and the caveat that the lite version could be reverted through my website.I simply could not communicate these facts to users to help them decide whether to upgrade or what to expect after upgrading.
The complaints about the new lite version have been diverse.Most pertinent to this discussion are complaints that the lite version now limits the rows/cols where the previous version didn't.I find such complaints unjustifiable since I explicitly permit reversion.I literally don't see what they have to complain about. Another irksome genre of complaints is that the program is still too simple to ask any money for at all. I am infuriated. It costs less than an ice cream cone.So, as discussion, how would other developers handle this situation: initial app is simple so offered for free,later version is complex so split into lite/pro. You don't want to limit the lite version by not showing the new fancy features, so the limitation must be something else, a time limit, a forced delay splash screen, something.I chose limited rows/cols on a spreadsheet app, but also permitted reversion to the old unlimited version.
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Oct 22, 2010
I was wondering if it is possible to perform a trial reset for NDrive map on hTc Desire.
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Jul 28, 2010
I have published a free trial application on Android market.
Since there is a protection method now (LVL) I want to upload also the full version of that application. Unfortunantly when I try to upload the full version on the market it tell me that there is just another software with the same package name and to update that package.
When I update that package it doesn't let me choose to switch from free to payed. How can I do it?
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Nov 2, 2010
I am reading one simple web page, but when I launched my application after 2-3 min it show me output as: The operation timed out. Here ia my code...........
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Sep 1, 2010
After stopping and restarting playback of an audiotrack stream, on some devices I consistently get;
W/AudioTrack( 2453): obtainBuffer timed out (is the CPU pegged?) 0x64acc0 user=00010000, server=00000000
after freezing for a couple of seconds. This happens whether I just pause() and flush() my audiotrack or release() and recreate it.
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Nov 4, 2009
I am using MediaPlayer to play background music and SoundPool to play sound effects. All Audio data is stored in .ogg file format. Sometimes it happens that the MediaPlayer playback is interrupted for a fraction of a second if SoundPool.play() is called. Whenever this happens, the following two warnings are printed to logcat:
11-04 01:49:05.113: WARN/AudioTrack(51): obtainBuffer timed out (is the CPU pegged?) 0x2b6e8 user=000cc520, server=000cb710 11-04 01:49:05.113: WARN/AudioTrack(51): *** SERIOUS WARNING *** obtainBuffer() timed out but didn't need to be locked. We recovered, but this shouldn't happen (user=000cc520, server=000cb710)
Do you have any ideas what could cause the warning messages and/or how to avoid them? I.e. how to prevent SoundPool.play() from interrupting MediaPlayer playback?
An other warning that's sometimes appearing is: 11-04 01:55:49.793: WARN/AudioFlinger(51): write blocked for 89 msecs There seems to be no connection to the above messages, but do you have any ideas what causes this message and/or how to avoid it?
Here's some more detailed background information, maybe they are useful: My OpenGL powered game is split into three threads: One for rendering, one to take care about the game logic and the main thread to process user input. All Audio data is accessed through a central AudioManager class, which is only used in the game logic thread. (So this does not seem like a threading issue. Needless to say that synchronizing all methods has not solved the problem). The game runs smoothly at ~60 frames per second. According to DDMS the game causes ~33% system load (~10% in kernel space and ~23% in user space) on a G1. Even the idle task gets ~24% CPU time assigned while the game is running and input happens through the touch screen! (So it does not look like a performance problem) The MediaPlayer playback interruption always happens if SoundPool.play () is called in response of a touch screen input. Although touch screen input and SoundPool.play() happen in different threads. I've tried suspending the UI thread for various different delays between 8 and 32 msec after a MotionEvent has been processed, but again, without success...
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Aug 27, 2010
I have an Android app which needs to play a sound resource on a timed interval, say every 120 seconds. I know how to access the sound resources and play them, however it's time timer part I'm not sure of. What's the best approach?
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Sep 4, 2010
I'm getting a Java Socket Exception "Operation timed out" when trying to call a .NET web service method. I've followed the many examples out there on the web to get my android to call a .net web service.
I'm running the web service using VS2010 in debug mode. The web method I'm calling is very simple -> "string GetVersion()"
I've read some posts that eclipse needs to be configured to access the internet by modifying the Proxy preferences "Preferences -> General -> Network Connections" from the Window menu item. I haven't been able to figure out exactly what I need to configure in the Proxy to get things to work if that is the problem.
I've also tried to access the .net web service root page (service.asmx) from my android with no success. I can access the asmx page with no problems using IE on the local machine. I've turned off the firewall and that didn't solve anything either. This is the first time I've tried to access a web service from a remote computer when it was running using VS2010 in debug mode.
I don't know if I have a configuration issue on the eclipse side or on the VS2010 side.
I'm also running Windows 7 Home Premium.
Below is a code snippet...
CODE:.................
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Sep 18, 2010
I just downloaded this version of Swype maybe two (three?) weeks ago on my 2.2 Froyo Evo phone. After experiencing Swype I would NEVER go back to the old keyboard. Unfortunately, today, I was told my trial version has expired. Now I can only use the Swype keyboard ,but can't 'swype'.
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Feb 25, 2009
I'm developing an app which needs to connect to the internet, but when i send a request using DefaultHtpClient.execute() method it takes 2-3 minutes and then the stacktrace says java.net.SocketException:operation timed out............
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Apr 9, 2009
I am working on an android project where the local and remote image files and their thumbnails are to be displayed. Now i have a problem with displaying the remote images. If i click the back button when the application is connected with the server, It waits for few seconds and forces my application to close. Log has a message "Key dispatching timed out". Once the image has downloaded completely back button is working, Here is my log...............
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May 4, 2010
I'm receiving "SocketTimeoutException: Read Timed Out" errors in my client app when attempting to post image data to a central server over HTTPS. What's odd is that I cannot reproduce the error when posting data from my local machine (via the emulator) to the same server. Increasing the SO_TIMEOUT value seems to only prolong the amount of time it takes for the timeout exception to occur. I am very new to using the Apache HTTP API - what am I missing?
CODE:..........................
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Nov 8, 2010
I want to make a trial version, where the application functionality works a limited amount of times. The consumer will then be given the option to buy the complete version on Android market. How can I implement that?
I could write some info to the sdcard after each start of the app and then read that info on the next start or reinstallation of the app. But would that work? This thread
http://groups.google.com/group/android-developers/browse_thread/threa... :
says that there's no 100% sure way to keep someone from reusing a trial version. That seems strange. It is possible to make a functionable trial version in J2ME with the RecordStore class. Why shouldn't this be possible in Android?
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Aug 12, 2010
In my Android application I am getting a very strange crash, when I press a button (Image) on my UI the entire application freezes and after a couple of seconds I getthe dreaded force close dialog appearing.
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Mar 27, 2012
I'm using Google's LVL mechanism for licensing in my application and in the last few days I've started getting reports from users that the licensing mechanism fails. I get the following lines in the log from those users:
Code:
Line 925: 03-26 23:04:41.463 I/LicenseChecker(31875): Binding to licensing service.
Line 926: 03-26 23:04:41.473 I/LicenseChecker(31875): Calling checkLicense on service for com.blabla.myApp
Line 927: 03-26 23:04:41.473 I/LicenseChecker(31875): Start monitoring timeout.
Line 930: 03-26 23:04:51.472 I/LicenseChecker(31875): Check timed out.
I've made sure with the users that they have Internet connection, you can see that it takes ~10 minutes before I get a timeout so this isn't just a momentary thing, and on top of this, I check for license several times before deciding that this is invalid.
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