android-framework

Suppose I have an android Activity / Service that is using system services such as PowerManager, WifiManager, etc... Is it beneficial to have private members for keeping reference to those services once in the constructor or onCreate method instead of getting those service managers each and every time they are needed by calling getSystemService(...)`? If so, are those members safe to use in case one of those system services crash and restart? If they aren't safe, what is the right approach for handling such cases of service death? s it beneficial to have private members for keeping reference

I am trying to identify the configuration file where SELinux is set to Enforcing mode in Android Framework. Please do not reply just saying adb shell su 0 setenforce permissive I need the system to boot in permissive mode or have SELinux completely disabled at boot time. Thanks There are two ways that enforcing mode is set. On user builds, it will always be in enforcing. On eng or userdebug, you can control it. You can control it in the standard selinux way, by setting enforcing=1/0 on the kernel command line as outlined in Dan Walsh's blog: http://danwalsh.livejournal.com/10972.html The

With android 4.4 I'm finding that some users are having the notificationListenerService I've implemented will just stop working. I've actually seen this myself too. I've never managed to capture any logcats around the time of it happening, but even going into the notification access section and switching off and back on the notification access doesn't help. Is there something that can cause this to happen. I'm not sure if my app is crashing and causing this, but even if so it seems the only way to restart the listener is to reboot the phone. Is there another way to start my app receiving

For my thesis, I'm modifying the android framework and building the source (4.1.1 Jelly Bean). I can do a full build, but because this is very time consuming (I'm developing on a ubuntu 12.04 64bit virtual machine) I'd like to build separate modules. For example: When doing changes to the location modules, it should be possible to just build the changed module, and make a new system image: mmm frameworks/base make snod But this doesn't work. Every time I try to boot, the new system image won't boot because of: I/dalvikvm( 1696): DexOpt: mismatch dep signature for '/system/framework/framework

I'm referring to the post: Android: How to integrate a decoder to multimedia framework Following it i have registered my new decoder (Which is currently not supported by Android) in media_codecs.xml . The Step 2 of the above post requires me to perform OMX core registration . However, Since i'm really new to this topic, i'm not able to follow the step 2. I have the working code of the decoder in C and is already ported to android. So i request if anybody can provide information on: A step-by-step guide to preform OMX code registration for a decoder that is currently not supported by android.