Slide 1
Slide 1 text
#BDLLFZIBOEMJOHXJUI/BWJHBUJPO
TIJCVZBBQL
দଜߤ༟
Slide 2
Slide 2 text
"CPVU.F
w দଜߤ༟ ,PTVLF.BUTVNVSB
w /"7*5*.&+"1"/$P
-UE
"OESPJEJ04%FWFMPQFS
w ,BXBTBLJ'SPOUBMF4VQQPSUFS
w 5XJUUFS
NLPTVLF!LPTVLF@NUN
Slide 3
Slide 3 text
5PEBZ`TUIFNF
w )PXUPIBOEMFCBDLLFZQSFTTXJUI/BWJHBUJPO
w ฤूը໘ͳͲͰόοΫΩʔΛԡԼͨ͠ࡍʹɺʮฤूΛഁغͯ͠ΑΖ͍͠
Ͱ͔͢ʁʯμΠΞϩάΛग़͍ͨ͠ͱ͖ͳͲΛఆ͍ͯ͠·͢
˞༷ͷྑ͠ѱ͜͜͠Ͱ͠·ͤΜ
Slide 4
Slide 4 text
8IBU`T/BWJHBUJPO
w 0OFDPNQPOFOUTPG"OESPJE+FUQBDL
w /BWJHBUJPONBLFT'SBHNFOUUSBOTJUJPOFBTJFS
Slide 5
Slide 5 text
/BWJHBUJPO(SBQI
ʮΔʯͷը໘ભҠఆٛͰ͖Δ͕ɺ
ʮόοΫΩʔʯͷΠϕϯτൃੜ࣌ͷॲཧॻ͚ͳ͍
Slide 6
Slide 6 text
࣮ํ๏
Slide 7
Slide 7 text
"DUJWJUZ
override fun onBackPressed() {
val navHost = supportFragmentManager
.findFragmentById(R.id.my_nav_host_fragment)
as NavHostFragment
val target = navHost.childFragmentManager
.findFragmentById(R.id.my_nav_host_fragment)
if (target is OnBackPressHandler) {
if (target.onBackPressed()) {
return
}
}
super.onBackPressed()
}
όοΫΩʔͷ࠷ॳͷΠϕϯτड͚औΓޱͰ͋Δ"DUJWJUZͰ
ΠϕϯτΛड͚औΓ·͢
Slide 8
Slide 8 text
"DUJWJUZ
override fun onBackPressed() {
val navHost = supportFragmentManager
.findFragmentById(R.id.my_nav_host_fragment)
as NavHostFragment
val target = navHost.childFragmentManager
.findFragmentById(R.id.my_nav_host_fragment)
if (target is OnBackPressHandler) {
if (target.onBackPressed()) {
return
}
}
super.onBackPressed()
}
/BW)PTU'SBHNFOUΛऔಘ͠·͢
Slide 9
Slide 9 text
/BW)PTU'SBHNFOU
/BWJHBUJPOͰը໘ભҠΛߦ͏߹ͷ3PPUʹ૬͢Δ'SBHNFOUɻ
/BWJHBUJPOɺ͜ͷ/BW)PTU'SBHNFOUͷ্ͰDIJME'SBHNFOUͱͯ͠ը໘ભ
ҠΛߦ͍·͢
/BW)PTU'SBHNFOU
'SBHNFOU" 'SBHNFOU# 'SBHNFOU$
DIJMEGSBHNFOU
OBWJHBUF OBWJHBUF
Slide 10
Slide 10 text
/BW)PTU'SBHNFOU
/BWJHBUJPOͰը໘ભҠΛߦ͏߹ͷ3PPUʹ૬͢Δ'SBHNFOUɻ
/BWJHBUJPOɺ͜ͷ/BW)PTU'SBHNFOUͷ্ͰDIJME'SBHNFOUͱͯ͠ը໘ભ
ҠΛߦ͍·͢
/BW)PTU'SBHNFOU
Slide 11
Slide 11 text
/BW)PTU'SBHNFOU
/BWJHBUJPOͰը໘ભҠΛߦ͏߹ͷ3PPUʹ૬͢Δ'SBHNFOUɻ
/BWJHBUJPOɺ͜ͷ/BW)PTU'SBHNFOUͷ্ͰDIJME'SBHNFOUͱͯ͠ը໘ભ
ҠΛߦ͍·͢
"DUJWJUZͰࢀর͍ͯͨ͠JE
Slide 12
Slide 12 text
"DUJWJUZ
override fun onBackPressed() {
val navHost = supportFragmentManager
.findFragmentById(R.id.my_nav_host_fragment)
as NavHostFragment
val target = navHost.childFragmentManager
.findFragmentById(R.id.my_nav_host_fragment)
if (target is OnBackPressHandler) {
if (target.onBackPressed()) {
return
}
}
super.onBackPressed()
}
/BW)PTU'SBHNFOUΛऔಘ͠·͢
Slide 13
Slide 13 text
"DUJWJUZ
override fun onBackPressed() {
val navHost = supportFragmentManager
.findFragmentById(R.id.my_nav_host_fragment)
as NavHostFragment
val target = navHost.childFragmentManager
.findFragmentById(R.id.my_nav_host_fragment)
if (target is OnBackPressHandler) {
if (target.onBackPressed()) {
return
}
}
super.onBackPressed()
}
/BW)PTU'SBHNFOU͔Βݱࡏදࣔதͷը໘ 'SBHNFOU
Λऔಘ͠·͢
Slide 14
Slide 14 text
/BW)PTU'SBHNFOU`TDIJMEGSBHNFOUT
/BW)PTU'SBHNFOUʹͭͷDIJME'SBHNFOU͕BUUBDI͞Ε͍ͯ·͢
ͻͱͭݱࡏදࣔதͷ'SBHNFOUɺ͏ͻͱͭ4UBUF'SBHNFOUͰ͢
// FragmentNavigation.java
public void navigate(Destination dest, Bundle args, NavOptions option){
final Fragment frag = dest.createFragment(args);
final FragmentTransaction ft = mFragmentManager.beginTransaction();
(్தུ…)
ft.replace(mContainerId, frag);
final StateFragment oldState = getState();
if (oldState != null) {
ft.remove(oldState);
}
final @IdRes int destId = dest.getId();
final StateFragment newState = new StateFragment();
newState.mCurrentDestId = destId;
ft.add(newState, StateFragment.FRAGMENT_TAG);
ݱࡏදࣔதͷ'SBHNFOU
N$POUBJOFS*E/BW)PTU'SBHNFOUͱಉ͡*%
4UBUF'SBHNFOU
Slide 15
Slide 15 text
4UBUF'SBHNFOU
@RestrictTo(RestrictTo.Scope.LIBRARY)
public static class StateFragment extends Fragment {
static final String FRAGMENT_TAG = “…FragmentNavigator.StateFragment”;
private static final String KEY_CURRENT_DEST_ID = "currentDestId";
int mCurrentDestId;
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState != null) {
mCurrentDestId = savedInstanceState.getInt(KEY_CURRENT_DEST_ID);
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt(KEY_CURRENT_DEST_ID, mCurrentDestId);
}
}
6*Λ࣋ͨͳ͍'SBHNFOU
ʮΔʯ࣌ͷ*%Λอ͍࣋ͯ͠Δ͚ͩ
Slide 16
Slide 16 text
"DUJWJUZ
override fun onBackPressed() {
val navHost = supportFragmentManager
.findFragmentById(R.id.my_nav_host_fragment)
as NavHostFragment
val target = navHost.childFragmentManager
.findFragmentById(R.id.my_nav_host_fragment)
if (target is OnBackPressHandler) {
if (target.onBackPressed()) {
return
}
}
super.onBackPressed()
}
/BW)PTU'SBHNFOU͔Βݱࡏදࣔதͷը໘ 'SBHNFOU
Λऔಘ͠·͢
Slide 17
Slide 17 text
"DUJWJUZ
override fun onBackPressed() {
val navHost = supportFragmentManager
.findFragmentById(R.id.my_nav_host_fragment)
as NavHostFragment
val target = navHost.childFragmentManager
.findFragmentById(R.id.my_nav_host_fragment)
if (target is OnBackPressHandler) {
if (target.onBackPressed()) {
return
}
}
super.onBackPressed()
}
͋ͱ'SBHNFOU͕0O#BDL1SFTT)BOEMFSΛ࣮͍ͯͨ͠Β
PO#BDL1SFTTFE
ΛݺΜͰ͋͛Δ͚ͩͰ͢
Slide 18
Slide 18 text
0O#BDL1SFTT)BOEMFS
όοΫΩʔϋϯυϦϯά͍ͨ͠'SBHNFOUͰ͜ΕΛ࣮͠ɺ
USVFΛฦ٫͠·͢
interface OnBackPressHandler {
fun onBackPressed(): Boolean
}
Slide 19
Slide 19 text
#BDL1SFTTΛड͚औΔ'SBHNFOU
override fun onBackPressed(): Boolean {
AlertDialog.Builder(requireContext())
.setMessage("ݱࡏमਖ਼தͷ༰Λഁغͯ͠લͷը໘ʹͬͯΑΖ͍͠Ͱ͔͢ʁ")
.setPositiveButton("ઃఆΛഁغ͢Δ") { _, _ ->
Navigation.findNavController(requireActivity(),
R.id.my_nav_host_fragment).popBackStack()
}
.setNegativeButton("ฤूΛଓ͚Δ") { _, _ -> }
.show()
return true
}
࣮ࡍʹCBDL1SFTTͱಉͷॲཧΛߦ͏ʹ
/BW$POUSPMMFS͔ΒQPQ#BDL4UBDL
Λ࣮ߦ͠·͢
Slide 20
Slide 20 text
5IBOLZPVGPSZPVSBUUFOUJPO
Slide 21
Slide 21 text
3FGFSFODFT
w 2JJUB/BWJHBUJPOͰόοΫΩʔΛϋϯυϦϯά͢Δ
IUUQTRJJUBDPNNLPTVLFJUFNTGEBEBBEF
w "OESPJE+FUQBDLNBOBHF6*OBWJHBUJPOXJUI/BWJHBUJPO$POUSPMMFS
IUUQTXXXZPVUVCFDPNXBUDI W ($9U$KUH
w /BWJHBUJPO$PEFMBC
IUUQTDPEFMBCTEFWFMPQFSTHPPHMFDPNDPEFMBCTBOESPJEOBWJHBUJPO
JOEFYIUNM JOEFY ''JP
w IUUQTEFWFMPQFSBOESPJEDPNUPQJDMJCSBSJFTBSDIJUFDUVSFOBWJHBUJPO