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나는이 내 firebaseRecyclerAdapter하고 이것은 재활용 어댑터와 함께 백업액세스 자식 노드는
Query queryRef = chatRef.orderByKey();
queryRef.addChildEventListener(new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot snapshot, String previousChild) {
System.out.println(snapshot.getKey());
for (DataSnapshot snapshot1 : snapshot.getChildren()) {
final String firstname = snapshot.getKey();
chatViewHolder.setName(firstname);
chatViewHolder.mView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//Log.w(TAG, "You clicked on "+position);
//String firstname = tList.getFirstname();
//String lastname = tList.getLastname();
//firstname = firstname.substring(0, 1).toUpperCase() + firstname.substring(1); //convert first string to uppercase
//lastname = lastname.substring(0, 1).toUpperCase() + lastname.substring(1);// same thing happening here
//String name = (firstname + " " + lastname); // concatenate firstname and lastname variable.
Intent intent = new Intent(getActivity(), MainChat.class); //change to onclick
intent.putExtra("fullname", firstname);
//you can name the keys whatever you like
//intent.putExtra("image", userList.getImgUrl().toString()); //note that all these values have to be primitive (i.e boolean, int, double, String, etc.)
startActivity(intent);
}
});
}
다음과 같이 populateViewHolder이고 내 데이터베이스는
users
uid
conversations
sLname + sFname
-KyF........:
message: hi
timestamp: ServerValue.timestamp
-KyFr......:
message:hello
timestamp: ServerValue.timestamp
구현과 같이 보입니다 firebaseRecyclerAdapter
RecyclerView recycler = (RecyclerView) rootView.findViewById(R.id.recyclerview4);
recycler.setHasFixedSize(true);
recycler.setLayoutManager(new LinearLayoutManager(getActivity()));
FirebaseRecyclerAdapter mAdapter = new FirebaseRecyclerAdapter<ChatList, ChatHolder>(ChatList.class, R.layout.chatlistrow, ChatHolder.class, chatRef) {
@Override
public void populateViewHolder(final ChatHolder chatViewHolder, final ChatList chatList, final int position) {
//try catch block to catch events of no posts, it will most likely return a null error, so I'm catching it, else
//find its exception and catch itef
contactList = new ArrayList<String>();
//start here and getkey for everyone
contactList.add(chatRef.getKey());
//String firstname = chatRef.getKey();
//chatViewHolder.setName(firstname);
Query queryRef = chatRef.orderByKey();
queryRef.addChildEventListener(new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot snapshot, String previousChild) {
System.out.println(snapshot.getKey());
for (DataSnapshot snapshot1 : snapshot.getChildren()) {
final String firstname = snapshot.getKey();
chatViewHolder.setName(firstname);
chatViewHolder.mView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//Log.w(TAG, "You clicked on "+position);
Intent intent = new Intent(getActivity(), MainChat.class); //change to onclick
intent.putExtra("fullname", firstname);
//you can name the keys whatever you like
//intent.putExtra("image", userList.getImgUrl().toString()); //note that all these values have to be primitive (i.e boolean, int, double, String, etc.)
startActivity(intent);
}
});
}
//testing
}
@Override
public void onChildChanged(DataSnapshot snapshot, String previousChild) {
}
@Override
public void onChildMoved(DataSnapshot snapshot, String previousChild) {
}
@Override
public void onChildRemoved(DataSnapshot snapshot) {
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
// ....
});
}
};
recycler.setAdapter(mAdapter);
my ex port.json는
"admin" : {
"ZpMBDchTkPVh7El3EsIKEdmV28n1" : {
"bio" : "",
"conversations" : {
"Chinwendu Chiebidolu" : {
"-KYCaWdm7IJrF-yau0ES" : {
"message" : "hello",
"rfirstname" : "Chinwendu",
"rimgUrl" : "",
"rlastname" : "Chiebidolu",
"rname" : "Chinwendu Chiebidolu",
"timestamp" : 1480918181229,
"userId" : "lgsmNM2LXuVq8NBoDwDCaoe5B613"
}
},
"Damilola Aromiwe" : {
"-KYBzfTc5xHCPGM06QIE" : {
"message" : "hi",
"rfirstname" : "Damilola",
"rimgUrl" : "2124",
"rlastname" : "Aromiwe",
"rname" : "Damilola Aromiwe",
"timestamp" : 1480907995851,
"userId" : "ujNyb5erkSN7oS3aGZlXyc9Q0YJ2"
},
"-KYCYYkifzI-61dBKsTT" : {
"message" : "hello",
"rfirstname" : "Damilola",
"rimgUrl" : "2124",
"rlastname" : "Aromiwe",
"rname" : "Damilola Aromiwe",
"timestamp" : 1480917404523,
"userId" : "ujNyb5erkSN7oS3aGZlXyc9Q0YJ2"
},
"-KYCZ19NM2yKinU5eSLt" : {
"message" : "hello mr dammy, are you there? ",
"rfirstname" : "Damilola",
"rimgUrl" : "2124",
"rlastname" : "Aromiwe",
"rname" : "Damilola Aromiwe",
"timestamp" : 1480917527734,
"userId" : "ujNyb5erkSN7oS3aGZlXyc9Q0YJ2"
}
}
},
"email" : "[email protected]",
"firstname" : "Toyosi",
"imgUrl" : "2124",
"lastname" : "Yusuf",
"name" : "toyosi",
"parent" : true,
"phone" : "",
"teacher" : false,
"userId" : "ZpMBDchTkPVh7El3EsIKEdmV28n1"
}
},
"teachers" : {
"inFa52OMArdKyUTMYrkRqWs50uD2" : {
"bio" : "",
"email" : "[email protected]",
"firstname" : "David",
"imgUrl" : "",
"lastname" : "Akinyemi",
"name" : "",
"parent" : false,
"phone" : "",
"teacher" : true,
"userId" : "inFa52OMArdKyUTMYrkRqWs50uD2"
},
"xITyS4TrbWXPBhHYAgz0ZsdyYFa2" : {
"bio" : "",
"email" : "[email protected]",
"firstname" : "Ejura",
"imgUrl" : "",
"lastname" : "Ayeni",
"name" : "",
"parent" : false,
"phone" : "",
"teacher" : true,
"userId" : "xITyS4TrbWXPBhHYAgz0ZsdyYFa2"
}
},
"users" : {
"HJ55v7xUGmXQN2o1AQFDG9JtzCy1" : {
"bio" : "",
"email" : "[email protected]",
"firstname" : "",
"imgUrl" : "",
"lastname" : "",
"name" : "",
"parent" : true,
"phone" : "",
"teacher" : false,
"userId" : "HJ55v7xUGmXQN2o1AQFDG9JtzCy1"
},
"KrVp7D6gLoZoH6WcHT5tmyqb3o53" : {
"bio" : "",
"email" : "[email protected]",
"firstname" : "",
"imgUrl" : "",
"lastname" : "",
"name" : "",
"parent" : true,
"phone" : "",
"teacher" : false,
"userId" : "KrVp7D6gLoZoH6WcHT5tmyqb3o53"
},
"lgsmNM2LXuVq8NBoDwDCaoe5B613" : {
"bio" : "",
"conversations" : {
"Toyosi Yusuf" : {
"-KYCaWdHGbWxsk8h7EWy" : {
"message" : "hello",
"sfirstname" : "Toyosi",
"simageurl" : "2124",
"slastname" : "Yusuf",
"timestamp" : 1480918179544
}
}
},
"email" : "[email protected]",
"firstname" : "Chinwendu",
"imgUrl" : "",
"lastname" : "Chiebidolu",
"name" : "",
"parent" : true,
"phone" : "",
"teacher" : false,
"userId" : "lgsmNM2LXuVq8NBoDwDCaoe5B613"
},
"ujNyb5erkSN7oS3aGZlXyc9Q0YJ2" : {
"bio" : "",
"conversations" : {
"Toyosi Yusuf" : {
"-KYBzfT_p8N2oW7oqSke" : {
"message" : "hi",
"sfirstname" : "Toyosi",
"simageurl" : "2124",
"slastname" : "Yusuf",
"timestamp" : 1480907995531
},
"-KYCYYkfORU70Y1_PGug" : {
"message" : "hello",
"sfirstname" : "Toyosi",
"simageurl" : "2124",
"slastname" : "Yusuf",
"timestamp" : 1480917401926
},
"-KYCZ19KyX8X5G25CEz5" : {
"message" : "hello mr dammy, are you there? ",
"sfirstname" : "Toyosi",
"simageurl" : "2124",
"slastname" : "Yusuf",
"timestamp" : 1480917527335
}
}
},
"email" : "[email protected]",
"firstname" : "Damilola",
"imgUrl" : "2124",
"lastname" : "Aromiwe",
"name" : "",
"parent" : true,
"phone" : "",
"teacher" : false,
"userId" : "ujNyb5erkSN7oS3aGZlXyc9Q0YJ2"
}
}
}
chatList.class()가 여기
package com.mordred.theschoolapp;
/**
* Created by mordred on 11/29/16.
*/
public class ChatList {
public String userId;
public String rname;
public String rlastname;
public String rimageurl;
public ChatList() {
// Default constructor required for calls to DataSnapshot.getValue(User.class)
}
public String getFirstname() {
return rname;
}
public void setFirstname(String firstname) {
this.rname = firstname;
}
public String getLastname() {
return rlastname;
}
public void setLastname(String lastname) {
this.rlastname = lastname;
}
public String getImgUrl() {
return rimageurl;
}
public void setImgUrl(String imgUrl) {
this.rimageurl = imgUrl;
}
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
}
여기서 문제 가리키는 재활용 어댑터를 재귀 적으로 그 메시지를 검색하려고하는 메신저입니다. 그러나 위의 코드를 사용하면 첫 번째 메시지가 계속 반복됩니다. 아무도 나에게 무슨 일이 벌어지고 어떻게 해결할 수 있다고 말할 수 있습니까? 추가 정보가 필요하면 그냥 물어보십시오. 감사합니다.
나는 당신의 문제를 이해할 수 없다. 'FirebaseRecyclerAdapter'의 구현을 게시하고, 어댑터가 어느 노드에서 데이터베이스를 청취하는지, 그리고 chatRef가 가리키는 노드를 지적 할 수 있습니까? 또한, 데이터베이스의'sLname + sFname'에서 무엇을 의미합니까? 정확한 JSON 형식을 게시하는 것이 좋습니다. Firebase 데이터베이스 콘솔에서 ** JSON 내보내기 **를 수행하십시오. – Wilik
고맙습니다. 방금 – Mordred
이라는 질문을 업데이트했습니다.이 노드에서'chatRef'가 'users//conversations/ /'을 가리키고 있습니까? –
Wilik