Android :: Make A Trial Version Which Starts A Limited Amount Of Times?
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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Nov 11, 2010
Just got my first android phone, the eris! I'm really excited, if anyone could help me out with some tips please do! are there ways i can watch my data usage, since i have a limited amount?
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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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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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May 15, 2010
Does anyone know how to change the amount of times their phone rings before the caller is sent to voicemail? When I call my phone from another phone it only rings four to five times before it goes to voicemail. However, when I call my wife's eris it rings six to seven times before sending to voicemail.My phone is on v3 leak and my wifes is a stock 1.5.This is really frustrating because it already takes at least two rings from the other end before my phone even acknowledges someone is calling...and yes i've changed my slot cycle down to zero...so by the time it starts ringing the ringtone only lasts about five to ten secs.not enough time at all to even try to answer.
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Nov 15, 2010
So what is going on after the last update? My phone randomly freaks out at times and starts switching screens and stuff on it's own. Seems like it is possessed. Never did this before the update...and a friend of mine is having the same problem with their Incredible. Also at times I try to go back to the home screen and the screen goes completely black for a bit....then will eventually go to it. When it freaks out the only thing I can do is restart it and then it will work fine until the next time it freaks out.
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Aug 9, 2010
Will external library (for parsing JSON) work on 1.5 if it works on 2.1? So are libraries limited by android version? If yes, why?
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Apr 5, 2010
I am wanting to make an ad supported version of my app, any suggestions as who to go with? I was just looking into Admob, anyone like a different company better?
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May 16, 2010
I am almost done with my project in android, now I want to make the executable version of the application.
I need to demonstrate it in .exe form as soft app as on emulator, not by built and debug process from eclipse.
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Jul 21, 2009
I'm finishing to write my game and i'm thinking to participate to the ADC2. Since I also want to start selling the game to the android market asap, I want to know if is it possible to make a free demo version of the game to be used for the contest and a full paid version that is available to users that want to buy it before the contest has finished. Is it a violation of TOS or it can be done at my own risk (because the demo valued by judges is not the complete version?
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Sep 1, 2010
What I did was create two .java files. One that can compile and run on a 1.5 phone (SDK3) and then one that works on 2.0(SDK5) So for this example i'll call the 1.5 file ExampleOld and the new one Example. I was wondering if i just made activity like this if it would work sort of like a "portal" and pick the activity to load depending on the SDK so there is no crash or compile errors. Are there any changes I should make to my code? Maybe anyone out there that's had to do this before.
CODE:.................................
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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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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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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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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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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 8, 2010
I would like to make some phone calls that do NOT appear on my Verizon phone bill. I have a DINC and want to call a cell phone. Both ends are in the US. I don't mind paying a service such as Skype. Is there a way to make this happen?
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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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Jan 12, 2010
I've been pulling my hair out trying to achieve smooth scrolling in an OpenGL-based app on Eclair. It seems that no matter what I do, I cannot get more than 36 events per second (the rest is sent in history data which is useless in my case). This happens on both the emulator and the Motorola Milestone.Is this a hardcoded limit or am I doing something wrong? I'm implementing onTouchEvent on the activity and recording how many events are received per second and then send that info through Log.v to Eclipse. I also tried implementing onTouchEvent on the view instead of the activity and the results are the same.
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Mar 29, 2010
We have an app that needs to be distributed to a large but limited audience.We are doing this through our own web site.Now that AT&T will not allow any downloads to the Flip except through the Android market, we need to have the capability to have a limited distribution on the Market.Can this be done on the Android market?Will the Android market include this in the future?
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Apr 19, 2010
We were told that, as of Android 1.6, background processes were put in a Linux process scheduling class that limited how much CPU they would use. A few weeks ago, I ran a benchmark test that seemed to validate this claim.I have run more tests, and I am no longer confident in my earlier conclusion. I can get a background process to significantly impact the foreground process, more than would seem to be possible if the background process was, indeed, CPU-limited.
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Mar 3, 2010
I'm just wondering, if there is a limit on amount of data I can store in SharedPreferences. ( and if yes, what limit).
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Mar 30, 2010
For those of you who don't swype. It's a new keyboard if you want to give it a try. Free in the Market. Sent from my Eris using Tapatalk
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Jul 18, 2010
Ok so I have had Shazaam on my iPhone for a long time. I love the app! My gf downloaded it on her original Droid as well.
I just pulled it up today and noticed it says it's only a trial version and I have to pay for the full version on the DX...is that true? Why isn't it free on the X??
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Mar 29, 2010
Anyone know where i can get a copy of swype that works? and doesn't say trial has ended?
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May 11, 2010
I've seen a lot of applications that utilize this view, but in my region (Israel) it seems to show a different view than what the Google Maps application shows. Google Maps shows everything you would expect from Google Maps except street view. However map view does not. It never shows streets and details, just a big blotch of gray. Satellite view works, but not with the best resolution the Maps application offers.Can anyone point me to documentation of this matter?
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