Activity lifecycle

	A	B	C	D	E	F	G	H	J	K	L	M	N	O	P	Q	R
1	// open activity - press home		// open activity - press back		// open activity - rotate activity		// open activity - rotate activity		// open activity - open other activity - press back			// open activity - open other activity - rotate - press back			// open activity - open other activity for result - press back
2	user	activity A	user	activity A	user / comment	activity A	user / comment	activity A	user / comment	activity A	activity B	user / comment	activity A	activity B	user / comment	activity A	activity B
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4		onCreate()		onCreate()		onCreate()		onCreate()		onCreate()			onCreate()			onCreate()
5		onStart()		onStart()		onStart()		onStart()		onStart()			onStart()			onStart()
6		onPostCreate()		onPostCreate()		onPostCreate()		onPostCreate()		onPostCreate()			onPostCreate()			onPostCreate()
7		onResume()		onResume()		onResume()		onResume()		onResume()			onResume()			onResume()
8		onPostResume()		onPostResume()		onPostResume()		onPostResume()		onPostResume()			onPostResume()			onPostResume()
9	activity loaded		activity loaded		activity loaded		activity loaded		activity loaded			activity loaded			activity loaded
10	home press		back press		rotate		rotate		open other activity			open other activity			open other activity (startActivityForResult(second, requestCode))
11		onPause()		onPause()		onPause()		onConfigurationChanged()		onPause()			onPause()			onPause()
12		onSaveInstanceState()				onSaveInstanceState()					onCreate()			onCreate()			onCreate()
13		onStop()		onStop()		onStop()					onStart()			onStart()			onStart()
14					< deprecated from API 13	onRetainNonConfigurationInstance()					onPostCreate()			onPostCreate()			onPostCreate()
15				onDestroy()		onDestroy()					onResume()			onResume()			onResume()
16						onCreate()					onPostResume()			onPostResume()			onPostResume()
17						onStart()				onSaveInstanceState()			onSaveInstanceState()			onSaveInstanceState()
18						onPostCreate()				onStop()			onStop()			onStop()
19						onResume()			second activity loaded			second activity loaded			second activity loaded
20						onPostResume()			back press			rotate			back press
21											onPause()			onPause()			onPause()
22														onSaveInstanceState()		onActivityResult()
23										onRestart()				onStop()		onRestart()
24										onStart()				onRetainNonConfigurationInstance()		onStart()
25										onResume()				onDestroy()		onResume()
26										onPostResume()				onCreate()		onPostResume()
27											onStop()			onStart()			onStop()
28											onDestroy()			onPostCreate()			onDestroy()
29														onResume()
30														onPostResume()
31												rotated, back press
32														onPause()
33													onRetainNonConfigurationInstance()
34													onDestroy()
35													onCreate()
36													onStart()
37													onPostCreate()
38													onResume()
39													onPostResume()
40														onStop()
41														onDestroy()
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