Re: [android-porting] Re: Adding new module to android framework

[Shivaprasad Imdapur]

Hi Shridutt,

   Thanks a lot for your continues support and help.. I tried with above mechanism which you mentioned in your blog.. Still I have problems.

 1. In my Manager class there is a method which returns int data type like below

      public int dataFromService() {

              if (mService == null) {

                    Log.w(TAG, "Failed to get data; no Biometric service.");

                   return 0;

             }

             try {

              mValue =  mService.intFromService();

             } catch (RemoteException e) {

          }

       return mValue;

    }

   The above function I am calling in my app like below,

   DemoProxy dm= (DemoProxy) getApplicatioContext().getSystemService(Context.DEMO_SERVICE);

   int value = dm.dataFromService();

   But it is giving me a nullpointerexception.

I have one doubt  in your code (Manager class)..

   public IDemoService getDemoService(){

            mDemoService;

     }

  it should be return mDemoService. Is  I am correct ?

Thanks

Shiv

On Fri, May 24, 2013 at 9:45 PM, shridutt kothari <shridut...@gmail.com> wrote:

Hi Shiv,

For more details please my blog @ http://shriduttkothari.blogspot.in/2013/05/adding-new-system-service-in-android_24.html 

let me know if you still face any issues.

Thanks,

Shridutt Kothari

Impetus Infotech 

On Friday, May 17, 2013 7:06:39 PM UTC+5:30, Prasad wrote:

Hi Shridutt,

    1. As you said in mail I created Manager class in below path

         framework/base/core/java/android/os/my_manager.java/

    2. I created .aidl in same above path and I registered .aidl file in Framework/base/Android.mk

    3. I created Service class in this path 

         frameworl/base/services/java/com/android/server/your_custom_service and registerd in SystemService.java

    4.  I register my manager like below in the class /frameworks/base/core/java/android/app/ContextImpl.java

           registerService("service_name", new ServiceFetcher() {

        public Object createService(ContextImpl ctx) {

             return new your_service_manager(); 

              }});

   5.   Now inside /frameworks/base/core/java/android/content/Context.java, add following lines

                  public static final String DEMO_SERVICE = "service_name";

  6. After using all above steps I am using   getSystemService(Context.DEMO_SERVICE ) to access API's in App layer but  I am getting below error..

   ava.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.biometricclient/com.example.biometricclient.BioClient}: java.lang.Runtimd

E/AndroidRuntime( 3020):        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)

E/AndroidRuntime( 3020):        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)

E/AndroidRuntime( 3020):        at android.app.ActivityThread.access$600(ActivityThread.java:123)

E/AndroidRuntime( 3020):        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)

E/AndroidRuntime( 3020):        at android.os.Handler.dispatchMessage(Handler.java:99)

E/AndroidRuntime( 3020):        at android.os.Looper.loop(Looper.java:137)

E/AndroidRuntime( 3020):        at android.app.ActivityThread.main(ActivityThread.java:4424)

E/AndroidRuntime( 3020):        at java.lang.reflect.Method.invokeNative(Native Method)

E/AndroidRuntime( 3020):        at java.lang.reflect.Method.invoke(Method.java:511)

E/AndroidRuntime( 3020):        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)

E/AndroidRuntime( 3020):        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)               

E/AndroidRuntime( 3020):        at dalvik.system.NativeStart.main(Native Method)                              

E/AndroidRuntime( 3020): Caused by: java.lang.RuntimeException: Not implemented                               

E/AndroidRuntime( 3020):        at android.app.ContextImpl$ServiceFetcher.createService(ContextImpl.java:213) 

E/AndroidRuntime( 3020):        at android.app.ContextImpl$ServiceFetcher.getService(ContextImpl.java:202)

E/AndroidRuntime( 3020):        at android.app.ContextImpl.getSystemService(ContextImpl.java:1193)

E/AndroidRuntime( 3020):        at android.view.ContextThemeWrapper.getSystemService(ContextThemeWrapper.java:79)

E/AndroidRuntime( 3020):        at android.app.Activity.getSystemService(Activity.java:3999)

E/AndroidRuntime( 3020):        at com.example.biometricclient.BioClient.onCreate(BioClient.java:58)

E/AndroidRuntime( 3020):        at android.app.Activity.performCreate(Activity.java:4465)

E/AndroidRuntime( 3020):        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)

E/AndroidRuntime( 3020):        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)

E/AndroidRuntime( 3020):        ... 11 more

  How to solve this one..

Thanks

Shiv

   

On Monday, 13 May 2013 19:42:04 UTC+5:30, shridutt kothari wrote:

Hi Prasad,

Texas has explained this in very good way here @ http://processors.wiki.ti.com/index.php/Android-Adding_SystemService.

I have tested the procedure.

Some useful related links for this are :
https://github.com/CyanogenMod/android_frameworks_base/commit/88fff90131f54d45dc496c45127ac1d16ad257df

·         http://developer.android.com/reference/android/app/Service.html

      http://developer.android.com/guide/topics/fundamentals/services.html

      http://www.opersys.com/blog/esc-india-2011-wrapup

·         http://processors.wiki.ti.com/index.php/Android-Adding_SystemService

      https://github.com/CyanogenMod/android_frameworks_base/commit/88fff90131f54d45dc496c45127ac1d16ad257df

·         http://iserveandroid.blogspot.in/2011/01/how-to-implement-your-own-status-bar.html?showComment=1368108678394#c8749284632889235398

            http://www.alittlemadness.com/2010/06/07/understanding-the-android-build-process/

·         http://tools.android.com/build

Let me know if any further jelp required.

Thanks,

Shridutt kothari
On Friday, May 10, 2013 12:16:10 PM UTC+5:30, Prasad wrote:

Hi,

   How to add new module to a android framework. i.e By adding a new module I want to access API for application layer using getSystemService() method. How to do this one ? Is there any document or procedure to add new module to a framework.

Thanks

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[Shivaprasad Imdapur]

Hi Shridutta,

     Very nice blog. It works for me . Thanks a lot ::)

Thanks

Shiv