Flutter Lifecycle

1. 'MVUUFSͷMJGFDZDMF 'MVUUFS
   .FFUVQ
   5PLZP
   
   !TMJNF@B
2. ࣗݾ঺հ w ௕ඌ
   ಯ࢙
   !TMJNF@B
   w /55ςΫϊΫϩεॴଐ
   w ओʹ"OESPJEΤϯδχΞ
3. 'MVUUFSͷMJGFDZDMF
4. ֬ೝํ๏ class _MyHomePageState extends State<MyHomePage> with WidgetsBindingObserver { @override void didChangeAppLifecycleState(AppLifecycleState state) { print('*** state = ${state.toString()}'); } @override void initState() { super.initState(); WidgetsBinding.instance.addObserver(this); } @override void dispose() { super.dispose(); WidgetsBinding.instance.removeObserver(this); }
5. MJGFDZDMFͷύλʔϯ w JOBDUJWF
   w ΞϓϦ͕ඇΞΫςΟϒͰ͋ΓɺϢʔβͷೖྗΛड͚෇͚ͳ͍ঢ়ଶ
   w ΞϓϦΛόοΫάϥ΢ϯυʹҠߦͨ͠Γɺి࿩ʹԠ౴ͨ͠ΓɺΞ ϓϦΛ੾Γସ͑ͨΓ͍ͯ͠Δ్தஈ֊ʹ͓͍ͯ͜ͷঢ়ଶʹҠߦ͢ Δ
   w "OESPJEͷMJGFDZDMFʹ͸JOBDUJWFʹ֘౰͢Δঢ়ଶ͸ͳ͍
   w QBVTFE
   w ΞϓϦέʔγϣϯͷҰ࣌ఀࢭঢ়ଶɻϢʔβͷೖྗʹԠ౴ͤͣɺόο Ϋάϥ΢ϯυͰ࣮ߦ͞ΕΔ
6. MJGFDZDMFͷύλʔϯ w SFTVNF
   w ΞϓϦέʔγϣϯ͕දࣔ͞ΕɺϢʔβͷೖྗʹԠ౴͢ Δঢ়ଶ
   w TVTQFOEJOH
   w ΞϓϦέʔγϣϯ͕தஅ͞Ε͍ͯΔঢ়ଶ
   w J04Ͱ͸͜ͷঢ়ଶ͸ݱࡏ࢖༻͞Ε͍ͯͳ͍
 "OESPJEͰ΋ࣗ෼͸֬ೝͰ͖͍ͯͳ͍
7. MJGFDZDMFΠϝʔδ J04 ఀࢭঢ়ଶ XJMM'JOJTI-BVODIJOH8JUI0QUJPOT EJE'JOJTI-BVODIJOH8JUI0QUJPOT BQQMJDBUJPO%JE#FDPNF"DUJWF ΞΫςΟϒঢ়ଶ ఀࢭঢ়ଶ ΞΫςΟϒঢ়ଶ SFTVNFE
8. MJGFDZDMFΠϝʔδ J04 όοΫάϥ΢ϯυঢ়ଶ BQQMJDBUJPO8JMM&OUFS'PSFHSPVOE BQQMJDBUJPO%JE#FDPNF"DUJWF ΞΫςΟϒঢ়ଶ BQQMJDBUJPO8JMM3FTJHO"DUJWF BQQMJDBUJPO%JE&OUFS#BDLHSPVOE όοΫάϥ΢ϯυঢ়ଶ όοΫάϥ΢ϯυঢ়ଶ ΞΫςΟϒঢ়ଶ όοΫάϥ΢ϯυঢ়ଶ JOBDUJWF SFTVNFE JOBDUJWF QBVTFE
9. MJGFDZDMFΠϝʔδ "OESPJE ఀࢭঢ়ଶ PO$SFBUF PO4UBSU PO3FTVNF ΞΫςΟϒঢ়ଶ ఀࢭঢ়ଶ ΞΫςΟϒঢ়ଶ PO1PTU3FTVNF
10. MJGFDZDMFΠϝʔδ "OESPJE όοΫάϥ΢ϯυঢ়ଶ PO4UBSU PO3FTVNF ΞΫςΟϒঢ়ଶ όοΫάϥ΢ϯυঢ়ଶ ΞΫςΟϒঢ়ଶ SFTVNFE PO1PTU3FTVNF PO1BVTF όοΫάϥ΢ϯυঢ়ଶ JOBDUJWF όοΫάϥ΢ϯυঢ়ଶ JOBDUJWF QBVTFE PO4UPQ
11. ॴײ w EJE$IBOHF"QQ-JGFDZDMF4UBUF
    ͸
 ϑΥΞάϥ΢ϯυ
    㱻
    όοΫάϥ΢ϯυ
    ͷ
 ϥΠϑαΠΫϧ؅ཧʹ׆༻͢Δͷ͕Α͍
    w ىಈ࣌ॲཧͳͲ͸JOJU4UBUFͳͲΛ׆༻͢Δ