Why the event is not signed, but onMyEvent not called. Relavent code is below. Otto works fine for my purposes, but the script below assumes placing an event from a callback handler (this is a simplification of the code that includes http calls). Not sure if this should do something about it.
I use Otto (based on the Guava event bus) and Dagger (Guice). Hope Java experts can also see any problem related to the way I enter and use the following bus.
Application (module registration)
package com.example.ottocb; import android.app.Application; import android.content.Context; import com.squareup.otto.Bus; import dagger.Module; import dagger.ObjectGraph; import dagger.Provides; import javax.inject.Singleton; public class MyApplication extends Application { private ObjectGraph objectGraph; @Override public void onCreate() { super.onCreate(); objectGraph = ObjectGraph.create(new MyModule(this)); } public ObjectGraph objectGraph() { return objectGraph; } public void inject(Object object) { objectGraph.inject(object); } @Module(entryPoints = {Bus.class, MyActivity.class, MyFragment.class }) static class MyModule { private final Context appContext; MyModule(Context appContext) { this.appContext = appContext; } @Provides @Singleton Bus provideBus() { return new Bus(); } } }
Basefragment
package com.example.ottocb; import android.app.Fragment; import android.os.Bundle; public class BaseFragment extends Fragment { @Override public void onCreate(Bundle state) { super.onCreate(state); ((MyApplication) getActivity() .getApplication()) .inject(this); } }
Myfragment
package com.example.ottocb; import android.os.Bundle; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.Toast; import com.squareup.otto.Bus; import com.squareup.otto.Subscribe; import javax.inject.Inject; public class MyFragment extends BaseFragment { private static final String TAG = MyFragment.class.getName(); @Inject Bus bus; Button btn; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.myfragment, container, false); btn = (Button) view.findViewById(R.id.btn); btn.setOnClickListener(btnOnClick); return view; } Button.OnClickListener btnOnClick = new Button.OnClickListener() { @Override public void onClick(View v) { Log.i(TAG, "onClick"); MyCB cb = new MyCB(); cb.success(); } }; private class MyCB { public void success() { Log.i(TAG, "SUCCESS " ); bus.post(new MyEvent()); } public void failure() { Log.e(TAG, "Error"); } } @Subscribe public void onMyEvent(MyEvent event) { Log.i(TAG, "***** onMyEvent ********"); Toast.makeText(getActivity(), "***** RECEIVED EVENT *****", Toast.LENGTH_SHORT).show(); } }
Myactivity
package com.example.ottocb; import android.app.Activity; import android.os.Bundle; public class MyActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } }
Myvent
package com.example.ottocb; public class MyEvent { }
main.xml
<?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <fragment class="com.example.ottocb.MyFragment" android:id="@+id/myfragment" android:layout_width="match_parent" android:layout_height="match_parent" /> </FrameLayout>
myfragment.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <Button android:id="@+id/btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Post" /> </LinearLayout>