Android Binder Example

Question

I am looking for simple binder IPC example in C/C++. Recently I started reading about the Android Binder basic (http://bharathi.posterous.com/android-binder) and gone thru the code in Android source also. Most of the binder usage part is in C++. Can some one explain why C++ is used instead of C?

score 5 · Accepted Answer · edited Aug 04 '12 at 16:42

5

Check out http://github.com/mcr/Android-HelloWorldService (if you use later versions of android you may have to exchange some includes from #include <utils/something> to #include <binder/something>).

You can also download the android source code and look into frameworks/base/camera/tests/CameraServiceTest/CameraServiceTest.cpp

Cheers!

edited Aug 04 '12 at 16:42

thejh

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answered Oct 20 '10 at 13:02

Samuel Skånberg

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Thanks Sam. I have gone thru the some of the native services. But the complexity of thous services blocking the basic understanding of the binder concept. I hope, this example will help me understand binder :) – Midson Oct 28 '10 at 01:57
Are you able to successfully compile this code? – Midson Oct 30 '10 at 08:15
Thanks Sam, Wonder example for understanding abt android binder. I downlaoded the sample and i build with the android source code placed HelloWorldService under packages/app and i genereted the apk and so files. But SERVICe is not created.... getting following logs : > ERROR/HelloWorld(491): services :::::: [Ljava.lang.String;@4051b358 > ERROR/HelloWorld(491): services LENGTH is 5 ERROR/HelloWorld(491): > services isMyServiceRunning ::: false ERROR/HelloWorld(491): > services[0]=null ERROR/HelloWorld(491): services[1]=null > ERROR/HelloWorld(491): services[2]=null ERROR/HelloWorld(491): > serv – Ganesh Ramamoorthy Oct 18 '11 at 12:46

score 2 · Answer 2 · answered Nov 15 '11 at 12:28

I was able to get the native application compile and working on Android 2.3 source code. For this I had to make two changes - 1st is change the path of binder include files from to and secondly to include the libbinder in the libhelloworldservice makefile.

Thanks for this simple example illustrating binder use.

Android Binder Example

2 Answers2