Executing the function calls in onServiceConnected() method is not
what is wanted as described in following case:
There is a Service Wrapper class where the binding/unbinding is
actually done.
The MyServiceClient is an Activity class used for invoking some
functions on the service using the Service Wrapper class, instead of
directly binding/unbinding to service.
In this case, a service client using the wrapper class cannot execute
the function calls on the service in onServiceConnected() method,
which is in a different file.
The NullPointerException is therefore still thrown when any function
is invoked on the service after initializing the service wrapper.
-------------------------------------------
CODE SNIPPET (UPDATED)
-------------------------------------------
//class MyServiceClient in separate file - Used for accessing the
service via a wrapper class
class MyServiceClient extends Activity
{
public void onCreate(Bundle savedInstanceState) {
//some lines
ServiceWrapperClass svc = new
ServiceWrapperClass(getApplicationContext());
//access the service
Integer someValue = svc.getService().someFunc(1, 2);
//
NullPointerException here - How to make sure service should be running
before any function is called on the service ?
}
}
//class ServiceWrapperClass in separate file - Used for binding to
service and providing the service instance to client
class ServiceWrapperClass
{
private static ISomeServiceInterface myService;
//constructor
public ServiceWrapperClass(Context context) {
//create intent to connect to service
Intent serviceIntent = new Intent("some.uri");
context.bindService(serviceIntent, progressBarServiceConn,
Context.BIND_AUTO_CREATE);
//access the service
Integer someValue = myService.someFunc(1, 2); //
NullPointerException here - How to make sure service should be running
before any function is called on the service ?
}
private ServiceConnection progressBarServiceConn = new
ServiceConnection(){
@Override
public void onServiceConnected(ComponentName name,
IBinder service)
{
myService =
ISomeServiceInterface.Stub.asInterface(service);
}
@Override
public void onServiceDisconnected(ComponentName name)
{
myService = null;
}
};
public ISomeServiceInterface getService()
{
return myService;
}
}
On Jul 21, 3:16 pm, Mark Murphy <[email protected]> wrote:
> On Thu, Jul 21, 2011 at 1:26 AM, animeshsi <[email protected]> wrote:
> > The issue is that I need to call the service methods as soon as it is
> > connected.
> > So, Is there any way by which I can execute the functions of service
> > JUST AFTER binding is complete ?
>
> Execute those "functions" in onServiceConnected().
>
> --
> Mark Murphy (a Commons
> Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy
>
> Android Training in London:http://bit.ly/smand1,http://bit.ly/smand2
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