[android-developers] How to calculate a tablets resolution before purchasing the tablet
I am looking at buying a Toshiba eXcite Pro AT10LE-A-10D, which boasts a screen resolution of 2560 x 1600 pixels for a screen diagonal of 10.1. Is it possible to calculate the DP value - ie MDPI / HDPI / XHDPI etc ? I haven't been able to find any form of developer support on the toshiba web site, which could have helped. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Bluetooth, my app suddenly asks for permission to access SIM. Why?
I'm developing a game that has 'play via bluetooth' mode. Two game instances connect to each other perfectly, but from time to time (one out of ten or so) I got a confirmation dialog on my Galaxy S3 with message that Remote app requests permission to access SIM. This message appears when my game tries to connect to the S3 phone. Suddenly after several successful connections, next connection raises this dialog and then refuses to connect no matter what I choose in this dialog. I've tested this behavior on my Galaxy S3 (Android 4.1.1) and HTC Legend (Android 2.2). The game is using generated UUID for creating secure bluetooth connection. Why am I getting this access SIM? And how to fix it? Any advice is really appreciated. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: Why apps not developed in C ?
Here are some thoughts that would help bias the default choice toward Java: - There are more Java programmers out there, and Java is taught more than C or C++. This leads to a bigger audience of developers for Google Play. - The level of skill required to use C C++ effectively is higher than it is for Java, since the legacy of the languages is older and there are more pitfalls and gotchas to worry about, like undefined behaviour, memory corruption, and so forth. - Tooling and library support has historically been better for Java than it has been for C / C++. - Using a virtual machine means that apps don't need to be recompiled to support future platforms. It may also give more freedom in other areas. The downside is that the performance can sometimes be terrible under Dalvik. ART aims to ameliorate this, but I don't know if it can close the gap as well as Java on the desktop/server has been able to, relative to native performance. I've seen differences of 10x or more between native and Dalvik, depending on what the code is doing. For most non-game applications this won't be an issue, but for some applications, it is, and the Google team acknowledges this and gives you access to C / C++ via the NDK (Native Development Kit), if you really want it. There'll be a few limitations: - Code will be more complex due to the need to mix Java, C / C++, and JNI glue code. - Most Java APIs are not directly accessible from the native layer. - You're limited as to which native libraries you can portably use across different versions of Android. If you're only looking for native performance without the hassle of using the NDK, RenderScript might be a better bet. C/C++ might still make sense if you have existing libraries, a multi-platform code base such as a game engine, and Google doesn't prevent you from using native languages if you really want to. You can even use Fortran and other languages too, if you want! The native layer is not a first-class citizen on Android's platform, so using Java RenderScript will lead to less pain, but the option is still there if you really want to use it. On Monday, March 31, 2014 7:19:14 AM UTC-4, NewToAndroid wrote: Hi all, I have this question out of curiocity. Android is based on Linux, which is basically written in C. Why Android apps are not written in C ? Why Java? I accept that , I might have big gaps in my understanding of Android, which is what I want to clear. Thanks in advance -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: License client issue: can NOT_LICENSED be returned due to being off-line?
I've run into similar issues, and found that it's more reliable in terms of impact on the end user to implement a second level of state tracking separately from what Google Play returns. So, you might want to do that depending on what your license policy is. On Monday, March 31, 2014 9:32:41 PM UTC-4, Ted Hopp wrote: We have an app that uses the following license policy: - if a definitive response of LICENSED is stored in the app's preferences and has not expired, allow access. - if a definitive response is not stored in the app's preferences, or if it has expired, or if the cached response is NOT_LICENSED, request a license check from the server. - if a definitive response (LICENSED or NOT_LICENSED) is received, it is stored in the prefs, along with the license validity period returned by the server. Access is permitted if the definitive response is LICENSED. - if anything other than a definitive response is received (airplane mode, server error, etc.), the last stored definitive response is used to determine access, even if expired. If no response is stored, allow access. (This is basically the same as the LenientPolicy described in this threadhttps://groups.google.com/forum/#!searchin/android-developers/%22NOT_LICENSED%22$20response/android-developers/Pg1R5COMLD8/mBiKJyUxp0MJ. We're aware of its weaknesses, but generally it works for us.) The problem is that we occasionally receive reports of customers being denied use of the app due to a license problem. These are installations that definitely should be receiving a server response of LICENSED. When the problem happens, and when we've been able to obtain details, it always turns out that the user's device was not fully connected. When full network connectivity was restored, the app ran fine. Here's (part of) a report from a customer who has been unusually helpful: I'm using an Acer Iconia A500 tablet, running Android 4.0.3, kernel 2.6.39.4+. . . . So, I don't seem to be able to simulate it with airplane mode on. I also tried turning airplane mode back off, and it works fine right now. The situation where this happened to me it happened three different times, it was during a reading group at another person's house, and I don't have any access to their wifi network. So, there was wifi in the area, but I wasn't connected to any at all, but I wasn't on airplane mode either. . . If it happens again, I will try to watch more closely and take note of any network circumstances. We have not been able to reproduce the problem on either an emulator or on our test devices. As far as I can tell from our code, our app will always run unless it receives a response of NOT_LICENSED from the license client. Our assumption had been that this was only possible if the licensing client successfully contacted the license server and received a response of NOT_LICENSED (or had an unexpired NOT_LICENSED server response previously cached). But perhaps our assumption is wrong. Is there any situation where the licensing client on the device will return a response of NOT_LICENSED due to a communication problem (or any other reason besides having received that response from the license server)? Is there anything we could ask the customer to do that might help sort out what's going wrong? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: License client issue: can NOT_LICENSED be returned due to being off-line?
I'm not sure I understand this suggestion. What state are you tracking? How is it separate from what Google Play returns? As I described, we are already separately maintaining the last definitive response received. Do you do something beyond that? More to the point: our app *seems* to be receiving a NOT_LICENSED response in situations where it is technically impossible that any response was received from the Google Play license server. How would we distinguish these responses (received from the licensing client running on the device) from legitimate NOT_LICENSED responses (which would also be delivered via the licensing client)? On Tuesday, April 1, 2014 9:38:40 AM UTC-4, Digipom wrote: I've run into similar issues, and found that it's more reliable in terms of impact on the end user to implement a second level of state tracking separately from what Google Play returns. So, you might want to do that depending on what your license policy is. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [android-developers] License client issue: can NOT_LICENSED be returned due to being off-line?
Without going into details since this is a public forum, suffice it to say that it might not be in your best interest to delicense the app when it has been licensed successfully in the past. This approach has helped us in dealing with these issues, and perhaps a similar approach might help out in your case. On Apr 1, 2014, at 11:48 AM, Ted Hopp ted.h...@gmail.com wrote: I'm not sure I understand this suggestion. What state are you tracking? How is it separate from what Google Play returns? As I described, we are already separately maintaining the last definitive response received. Do you do something beyond that? More to the point: our app seems to be receiving a NOT_LICENSED response in situations where it is technically impossible that any response was received from the Google Play license server. How would we distinguish these responses (received from the licensing client running on the device) from legitimate NOT_LICENSED responses (which would also be delivered via the licensing client)? On Tuesday, April 1, 2014 9:38:40 AM UTC-4, Digipom wrote: I've run into similar issues, and found that it's more reliable in terms of impact on the end user to implement a second level of state tracking separately from what Google Play returns. So, you might want to do that depending on what your license policy is. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to a topic in the Google Groups Android Developers group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/android-developers/2-FuY6eO1cQ/unsubscribe. To unsubscribe from this group and all its topics, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Fingerprint Scanner
Hello all, i am planing to make a application with finger print as a securit to that application, but i am unable to find the correct data or reference to my plan of making the application, i have seen the application https://play.google.com/store/apps/details?id=mobi.thinkchange.fingerscannerlite in this similar way, to access my application it should ask for fingerprint scan, how can i achieve the process of scanning the finger print, all the reference links and sample codes are most welcome, Thanks, Pendem Shiva Shankar, Gtalk:pendem.shiva89, msn:shivapen...@live.com, www.shivaapps.in. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
