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I hope I'm allowed to ask this non-programming related question here on StackOverflow. If not, I'm sorry...
Anyways, I bought a Samsung Galaxy S2 (running android 2.3.3) and have been reading up on rooting the device. What benefits do you get if you root your android device?
I'm quite in the dark about this still...
You have access to alter any system files, use themes, change boot images, delete annoying stock apps, such as Sprint's NFL Mobile live and Nascar Sprint Cup Mobile, and other various native applications that might drive you crazy (Footprints, Voice Dialer, etc).
There is plenty of information on the web on how to accomplish this, but our favorite way is by using Titanium Backup and freezing/deleting the apps from there (root required, of course).
On most rooted Android devices, you can back up your entire system to an SD card, much in the same way you can image a hard drive. This is great if you’d like to try a new ROM, as you can back up your phone, wipe it completely, flash the new ROM, and if you don’t like it, just restore from your backup to get your device back to exactly how it was before you wiped it.
Read the complete post Rooting Explained + Top 5 Benefits Of Rooting Your Android Phone
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I am running a study which requires me to load my Android app on multiple phones that are different makes and models. The study is specific (we do not want participation from the general public) so I assumed that I could not post the app on the Google Play app store. Is side-loading the app on each phone individually really my best option?
Is side-loading the app on each phone individually really my best option?
That depends on your definition of side-loading. Many people consider "anything other than the Play Store" to be side-loading, in which case the answer is "yes".
If you consider side-loading to mean by USB cable, you have alternatives. Put the APK file up on an Web server accessible from the devices, configured to serve up the APK file with the proper MIME type (application/vnd.android.package-archive). Then, visit that URL in a Web browser on the device, which will trigger a download and optional install.
Or, use DropBox or similar services that have native Android clients, as they can do much the same thing.
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How would you go about locking down an Android device while meeting the following requirements:
Access to Wifi networks
Access to a single company's App
Ability to download/update to newer versions of the company's App
Access to Bluetooth Printers
Obviously, this is a pretty general question, but I was hoping for some guidance. Are there any existing solutions to this problem? I am aware of apps like SecureLock and Device Lock, but do either of these allow application updating for JUST our application?
What about if we preconfigured the device to only have our application and nothing else, deleting all other applications?
Again, just looking for some direction/suggestions here.
Note: I am aware that essentially anything can be accomplished by releasing a custom version of Android, but implementation effort is a factor in which solution we will decide on.
I believe most of this can be achieved by building a "launcher" app and making it full screen (cover the status bar). Check out the API Demo Home.
Access to Wifi networks
You can use WifiManager to handle listing/connecting/etc.
Access to a single company's App
Creating the main app as a launcher gives you the ability to control what other apps may be installed/uninstalled/launched/etc.
Ability to download/update to newer versions of the company's App
This can easily be done by simply downloading the updated .apk (with a larger version code) and opening the file via Intent to install.
Access to Bluetooth Printers
I don't know much about this, but if it can be done in a normal app, the launcher method covers it.
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I've a car stereo (Pioneer AppRadio2) that seems to have a ROM tha contains WindowsCE for MIPS.
Would it be possible to run Linux/Andriod on the device by flashing a linux type ROM to the device ?
If it is possible what would be the high level steps that need to be done to achieve this ?
Pioneer does have a mobile developer web site for AppRadio, but it isn't live yet, so it looks like Pioneer won't be an immediate help.
You need to determine if the bootloader is locked by some sort of digital signature or not. If it is digitally signed and locked, you're going to have to either obtain a key from Pioneer or reverse engineer it.
Following that, use an embedded toolkit like OpenEmbedded to create a Linux environment on the device.
That wont be so easy. Actually it is meant to be a control station for android and iphone devices. so you could just use the android kit for your phone and control it from your appradio2 as for now. I know youre radio wouldnt be running the android itself but would display it and control it.
since it is quite new it will take some time for developers to "hack" it if it is possible. i have seen bounties on xda for example from people that would like what you are asking and other things.
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I experienced something weird on my Android tablet. It had been turned off for several weeks and then when I turned it on, it rebooted. Previously, it was just in sleep (standby) mode. But after rebooting, I noticed that the entire device was reset to its factory defaults. All my apps were gone and everything wiped.
Then a few days later I rebooted the device and was surprised to see that all my apps were back again and everything restored as it was. I don't use any backup/restore software, so I am really curious to know how this could happen? Does Android support multiple user profiles? If multiple boot profiles is supported, can this be utilized by an app through some API?
Android does not currently support multiple (simultaneous) user profiles. If you do want to achieve this, there is an app that supports it (perhaps more than one), but it involves having a rooted device.
I have personally used this on my home tablet, and it works quite nicely, but requires a reboot to access the other profiles.
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I had to accept a return on an Android app because the user told me it was not working on his Motorola Xoom. (The audio playback had some reverberation)
This is not a super high volume app, so I am not planning to go out and buy dozens of Androids to test it!
Also, it is an audio recorder app, so it does not work too well in an emulator.
How can I diagnose and correct the problem on the Xoom and in fact all other platforms, without investing a small fortune!
One thing you can do, if you're not averse to rooting, is installing different ROMs on your device. This will at least give you the chance to test on some different versions of Android and different UI skins (how many are available depends on your device).
I also read about services that test your app on different devices for you, but I'm not sure how much these cost.