Using Cloud Firestore in Android

6TJOH$MPVE'JSFTUPSF JO"OESPJE 'JSFCBTF+BQBO6TFS(SPVQNFFUVQ

w !JUPH w &OHJOFFS "OESPJE*P5 FNCFEEFE w -PWF#BB4*NJTTFETCFGPSFDMPVEpSFTUPSF w
3VOOJOHUIFDPNQBOZOBNFEQJHNBM --$

*OUIJT-JHIUOJOH5BML w UBMLBCPVU w 5IFUJQTUPVTFDMPVEpSFTUPSFJO"OESPJE w /05UBMLBCPVU w 'JSFCBTF$MPVE'JSFTPUSFCBTJD w
"OESPJECBTJD

$PNNPOJTTVFJO"OESPJE w 6* "DUJWJUZ 'SBHNFOU IBTBMJGFDZDMF w PO$SFBUF PO3FTVNF PO1BVTF
PO%FTUSPZFUDʜ w .BJOUISFBEIBOEMF6* w #MPDLJOHPQFSBUJPOMJLFOFUXPSLSFRVFTUJTOPUBMMPXFEUPSVOPO 6*UISFBE w NBZDBVTF"/3 w 5ISFBEEPFTO`UDBSFBCPVU6*MJGFDZDMF w "DUJWJUZNBZMFBL

-JGFDZDMFBXBSF "TZODISPOPVTEBUB GFUDIJOHVTJOH5BTL

8IBUJT5BTLT"1* w BO"1*UIBUSFQSFTFOUTBTZODISPOPVTNFUIPEDBMMT w $BMMFE1SPNJTFJOPUIFSMBOHVBHF

4JNQMF'JSFTUPSFFYBNQMF db.collection("users") .add(user) .addOnCompleteListener((task) -> { if (task.isSuccessful()) { Log.d(TAG,
"DocumentSnapshot added with ID: " + task.getResult().getId()); } else { Log.w(TAG, "Error adding document", task.getException()); } }); w %BUBPQFSBUJPOMJLFBEE TFU HFU VQEBUF EFMFUF RVFSZ SFUVSO5BTL Task<DocumentReference> add(Object pojo) Task<DocumentReference> add(Map<String, Object> data)

8IFSFJTBQJUGBMM w 5IFMJTUFOFSIBTBSFGFSFODFUPUIFBDUJWJUZ w 5IFMJTUFOFSNBZMJWFMPOHFSUIBOUIFBDUJWJUZ w $BVTJOH"DUJWJUZ-FBL protected void onCreate(Bundle
savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); TextView tv =findViewById(R.id.documentId); db.collection(“users") .add(user) .addOnSu .addOnSuccessListener((d) -> { Toast.makeText(MainActivity.this, "Success", Toast.LENGTH_SHORT).show(); }); }

w 5IFMJTUFOFSTIBWFUZQFTPGQBSBNFUFST Task addOnCompleteListener(OnCompleteListener listener) Task addOnCompleteListener( Activity activity, OnSuccessListener
listener) Task addOnCompleteListener( Executor executor, OnSuccessListener listener) 5BLJOHDBSFPGUIFMJGFDZDMF

w MJTUFOFSXJMMCFBVUPNBUJDBMMZSFNPWFEGSPNUIFUBTL XIFOUIF"DUJWJUZHPFTUISPVHIJUTPO4UPQ protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);
TextView tv =findViewById(R.id.documentId); db.collection(“users") .add(user) .addOnSu .addOnSuccessListener(this, (d) -> { tv.setText(d.getId()); }); } MJGFDZDMFBXBSFMJTUFOFS

#BEOFXT w 5IFEPDVNFOUTBZTl5BTL8"4EFQSFDBUFEz w 5IFSFJTOPMJTUFOFSUIBUIBT"DUJWJUZBTBpSTU QBSBNFUFS ͜ͷεϥΠυͷ಺༰͸ؒҧ͍Ͱͨ͠ͷͰ ࡟আ͠·͢

$VTUPN0CKFDU XJUIEPDVNFOUJE

UP0CKFDU w :PVDBONBQUIFEPDVNFOUTOBQTIPUUPUIFPCKFDU public class Chat { private String mName;
private String mMessage; private String mUid; // user id private Date mTimestamp; Public Chat() {} // default constructor is necessary ... } Chat chat = documentSnapshot.toObject(Chat.class);

w 5IFEPDVNFOUJEJTOPUNBQQFE w 8IFOUPVQEBUFEFMFUFUIFJUFN ZPVOFFEUIF EPDVNFOUJE query.get().addOnSuccessListener(documentSnapshots -> { for
(DocumentSnapshot d :documentSnapshots) { Chat chat = d.toObject(Chat.class); String objectId = d.getId(); } }

w "EEEPDVNFOUJEXJUI!&YDMVEFBOOPUBUJPO public class Chat extends AbstractChat { … @Exclude
private String documentId; @Exclude public String getDocumentId() { return documentId; } @Exclude public void setDocumentId(String documentId) { this.documentId = documentId; } } -FUUIFNPEFMIBWFUIF EPDVNFOUJE

w 4FUUIFEPDVNFOUJEXIFOZPVSFUSJFWFUIFEBUB query.get().addOnSuccessListener(documentSnapshots -> { for (DocumentSnapshot d :documentSnapshots) {
Chat chat = d.toObject(Chat.class); chat.setDocumentId(snapshot.getId()); ... } }

6TJOH'JSFCBTF6*

'JSFCBTF6* w BOPQFOTPVSDFMJCSBSZUIBUBMMPXTZPVUPRVJDLMZ DPOOFDUDPNNPO6*FMFNFOUTUP'JSFCBTF"1*T w "OESPJEIUUQTHJUIVCDPNpSFCBTF'JSFCBTF6* "OESPJE w J04IUUQTHJUIVCDPNpSFCBTF'JSFCBTF6*J04 w
XFCIUUQTHJUIVCDPNpSFCBTFpSFCBTFVJXFC

'JSFCBTF6*"OESPJE w "VUI6* w 3FDZDMFS7JFXBEBQUFSGPS $MPVE'JSFTUPSFSFBMUJNF EBUBCBTF w *NBHFVQMPBEBOEEPXOMPBE VTJOH$MPVE4UPSBHF

'JSFCBTF3FDZDMFS"EBQUFS w 4VCDMBTTPG3FDZDMFS7JFX"EBQUFS w -JTUFOUPUIFpSFTUPSF w -JGFDZDMFBXBSF public abstract class
FirestoreRecyclerAdapter<T, VH extends RecyclerView.ViewHolder> extends RecyclerView.Adapter<VH> implements ChangeEventListener, LifecycleObserver

'JSFTUPSF3FDZDMFS0QUJPOT w 4FUUIFRVFSZBOEUIFMJGFDZDMFPXOFS FirestoreRecyclerOptions<Chat> options = new FirestoreRecyclerOptions.Builder<Chat>() .setQuery(sChatQuery, Chat.class)
.setLifecycleOwner(this) .build(); new FirestoreRecyclerAdapter<Chat, ChatHolder>(options) { @Override protected void onBindViewHolder(@NonNull ChatHolder holder, int position, @NonNull Chat model) { holder.bind(model); } … }

8IBU`TNJTTJOHʁ w +VTUTIPXJOHJTPL CVUZPVNBZXBOUUPNPEJGZUIF JUFN

'JSFTUPSF3FDZDMFS0QUJPOT TFU2VFSZ w 5IFSFBSFUZQFTPGTFU2VFSZ w :PVDBOTFU4OBQTIPU1BSTFS public Builder<T> setQuery(@NonNull
Query query, @NonNull Class<T> modelClass) public Builder<T> setQuery(@NonNull Query query, @NonNull SnapshotParser<T> parser) public Builder<T> setQuery(@NonNull Query query, @NonNull QueryListenOptions options, @NonNull SnapshotParser<T> parser) public Builder<T> setQuery(@NonNull Query query, @NonNull QueryListenOptions options, @NonNull Class<T> modelClass)

w 4FUUIFEPDVNFOUJEJOUIFQBSTFS FirestoreRecyclerOptions<Chat> options = new FirestoreRecyclerOptions.Builder<Chat>() .setQuery(query, snapshot ->
{ Chat chat = snapshot.toObject(Chat.class); chat.setDocumentId(snapshot.getId()); return chat; }) .setLifecycleOwner(this) .build();

.BZCFOFYU w 6TJOHXJUI"OESPJE"SDIJUFDUVSF$PNQPOFOUT w "OESPJE"SDIJUFDUVSF$PNQPOFOUTษڧձ w IUUQTHEHUPLZPDPOOQBTTDPNFWFOU

Using Cloud Firestore in Android

Using Cloud Firestore in Android

Yuan Ito

Other Decks in Technology

Featured

Transcript

6TJOH$MPVE'JSFTUPSF JO"OESPJE 'JSFCBTF+BQBO6TFS(SPVQNFFUVQ

w !JUPH w &OHJOFFS "OESPJEP5 FNCFEEFE w -PWF#BB4NJTTFETCFGPSFDMPVEpSFTUPSF w

*OUIJT-JHIUOJOH5BML w UBMLBCPVU w 5IFUJQTUPVTFDMPVEpSFTUPSFJO"OESPJE w /05UBMLBCPVU w 'JSFCBTF$MPVE'JSFTPUSFCBTJD w

$PNNPOJTTVFJO"OESPJE w 6* "DUJWJUZ 'SBHNFOU IBTBMJGFDZDMF w PO$SFBUF PO3FTVNF PO1BVTF

-JGFDZDMFBXBSF "TZODISPOPVTEBUB GFUDIJOHVTJOH5BTL

8IBUJT5BTLT"1* w BO"1*UIBUSFQSFTFOUTBTZODISPOPVTNFUIPEDBMMT w $BMMFE1SPNJTFJOPUIFSMBOHVBHF

4JNQMF'JSFTUPSFFYBNQMF db.collection("users") .add(user) .addOnCompleteListener((task) -> { if (task.isSuccessful()) { Log.d(TAG,

8IFSFJTBQJUGBMM w 5IFMJTUFOFSIBTBSFGFSFODFUPUIFBDUJWJUZ w 5IFMJTUFOFSNBZMJWFMPOHFSUIBOUIFBDUJWJUZ w $BVTJOH"DUJWJUZ-FBL protected void onCreate(Bundle

w 5IFMJTUFOFSTIBWFUZQFTPGQBSBNFUFST Task addOnCompleteListener(OnCompleteListener listener) Task addOnCompleteListener( Activity activity, OnSuccessListener

w MJTUFOFSXJMMCFBVUPNBUJDBMMZSFNPWFEGSPNUIFUBTL XIFOUIF"DUJWJUZHPFTUISPVHIJUTPO4UPQ protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);

#BEOFXT w 5IFEPDVNFOUTBZTl5BTL8"4EFQSFDBUFEz w 5IFSFJTOPMJTUFOFSUIBUIBT"DUJWJUZBTBpSTU QBSBNFUFS ͜ͷεϥΠυͷ಺༰͸ؒҧ͍Ͱͨ͠ͷͰ ࡟আ͠·͢

$VTUPN0CKFDU XJUIEPDVNFOUJE

UP0CKFDU w :PVDBONBQUIFEPDVNFOUTOBQTIPUUPUIFPCKFDU public class Chat { private String mName;

w 5IFEPDVNFOUJEJTOPUNBQQFE w 8IFOUPVQEBUFEFMFUFUIFJUFN ZPVOFFEUIF EPDVNFOUJE query.get().addOnSuccessListener(documentSnapshots -> { for

w "EEEPDVNFOUJEXJUI!&YDMVEFBOOPUBUJPO public class Chat extends AbstractChat { … @Exclude

w 4FUUIFEPDVNFOUJEXIFOZPVSFUSJFWFUIFEBUB query.get().addOnSuccessListener(documentSnapshots -> { for (DocumentSnapshot d :documentSnapshots) {

6TJOH'JSFCBTF6*

'JSFCBTF6* w BOPQFOTPVSDFMJCSBSZUIBUBMMPXTZPVUPRVJDLMZ DPOOFDUDPNNPO6FMFNFOUTUP'JSFCBTF"1T w "OESPJEIUUQTHJUIVCDPNpSFCBTF'JSFCBTF6 "OESPJE w J04IUUQTHJUIVCDPNpSFCBTF'JSFCBTF6J04 w

'JSFCBTF6"OESPJE w "VUI6 w 3FDZDMFS7JFXBEBQUFSGPS $MPVE'JSFTUPSFSFBMUJNF EBUBCBTF w *NBHFVQMPBEBOEEPXOMPBE VTJOH$MPVE4UPSBHF

'JSFCBTF3FDZDMFS"EBQUFS w 4VCDMBTTPG3FDZDMFS7JFX"EBQUFS w -JTUFOUPUIFpSFTUPSF w -JGFDZDMFBXBSF public abstract class

'JSFTUPSF3FDZDMFS0QUJPOT w 4FUUIFRVFSZBOEUIFMJGFDZDMFPXOFS FirestoreRecyclerOptions<Chat> options = new FirestoreRecyclerOptions.Builder<Chat>() .setQuery(sChatQuery, Chat.class)

8IBU`TNJTTJOHʁ w +VTUTIPXJOHJTPL CVUZPVNBZXBOUUPNPEJGZUIF JUFN

'JSFTUPSF3FDZDMFS0QUJPOT TFU2VFSZ w 5IFSFBSFUZQFTPGTFU2VFSZ w :PVDBOTFU4OBQTIPU1BSTFS public Builder<T> setQuery(@NonNull

w 4FUUIFEPDVNFOUJEJOUIFQBSTFS FirestoreRecyclerOptions<Chat> options = new FirestoreRecyclerOptions.Builder<Chat>() .setQuery(query, snapshot ->

.BZCFOFYU w 6TJOHXJUI"OESPJE"SDIJUFDUVSF$PNQPOFOUT w "OESPJE"SDIJUFDUVSF$PNQPOFOUTษڧձ w IUUQTHEHUPLZPDPOOQBTTDPNFWFOU