Notes on opportune moments to do "stuff" in the Android Lifecycle

android_lifecycle_recommendations.md

• In general you want to try and put things in onStart and onStop for logical start and stops.

Activity

onCreate

• Dagger inject self into graph
• setContentView(R.layout.xxx)
• Butterknife.bind(this)
• RxJava CompositeSubscription.add (if NON UI related work being done)

onStart

• EventBus register // why not onResume + onPause you ask?

onResume

• RxJava CompositeSubscription.add (if ui related work being done)

onPause

• RxJava CompositeSubscription.clear (if ui related work being done)

onStop

• EventBus unregister

onDestroy

• Dagger "Activity" scoped graph destruction
• RxJava CompositeSubscription.clear (if NON UI related work being done)

Fragment (DialogFragment etc.)

onAttach(Activity)

• Dagger inject self into graph
• setCallbackOrListener(activity) - when you want to communicate back to the activity

onCreateView

• view = Inflate.inflation
• ButterKnife.bind(this, view);

onStart

• EventBus register

onResume

• RxJava CompositeSubscription.add (if ui related work being done)

onPause

• RxJava CompositeSubscription.clear (if ui related work being done)

onStop

• EventBus unregister

onDestroy

• ButterKnife.unbind(this);
• LeakCanary MyApp.getRefWatcher().watch(this);

View

onFinishInflate

• Butterknife.bind(this)

onAttachedToWindow

• RxJava CompositeSubscription.add

onDetachedFromWindow

• RxJava CompositeSubscription.clear

Application

• LeakCanary Refwatcher = LeakCanary.install(this);
• Dagger ObjectGraph.create

ViewHolder (for RecyclerViews, ListViews etc.)

ViewHolder (Constructor)

• Butterknife.bind(this. itemView)