我想找到密钥(例如:-KYNc6XTtavDtsC-VoqIb
),其中的电子邮件是 amitabh@gmail.com
我尝试了很多代码,但没有工作,我得到了完整的数据列表
这是我的代码:
database = FirebaseDatabase.getInstance();
myRef = database.getReference("members");
myRef.orderByChild("email").startAt(emailId).endAt(emailId);
这就是我所得到的。
DataSnapshot{
key=members,
value={
-KYNYiw5B1d8Brdz5KdR={
lastname=zxvzxvfsdf44,
email=fasdfds@rr44,
firstname=fdafaf44
},
-KYNYdX_gZ0tU-AbI1Ab={
lastname=zxvzxvfsdf,
email=fasdfds@rr,
firstname=fdafaf
},
-KYNd02QZptRktmR02IH={
lastname=dfasf,
email=you@bo.com,
firstname=amita
},
-KYNdlMM4zzlUT9FdSdu={
lastname=99dfasfs,
email=99@bos.com,
firstname=99
},
-KYNdBPMqxgSzm1ai92B={
lastname=dfasfs,
email=you@bos.com,
firstname=amitas
},
-KYNlYF4OzzCCewJuatt={
lastname=go2o,
email=go@to.to,
firstname=go
},
-KYNo7ZvLQeCGm97yUvf={
lastname=bamio,
email=samio@ss.com,
firstname=amio
},
-KYNdBRAipnlTYCCUwz6={
lastname=dfasfs,
email=you@bos.com,
firstname=amitas
},
-KYNc6XTtavDtsC-VoqI={
lastname=Sarkar,
email=amitabh@gmail.com,
firstname=amitabh
},
-KYNcHdlZjUlNSsjKlyW={
lastname=gjaldga,
email=ee@ee.com,
firstname=ami
}
}
}
答案 0 :(得分:1)
我找到了解决方案:
myRef.orderByChild("email").startAt(emailId).endAt(emailId).addChildEventListener(new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
Log.e("onChildAdded", dataSnapshot.toString());
}
});