我尝试使用geoquery填充recyclerview,并且我将geoquery的半径设置为0.1,因此我只从firebase获得1个项目(并且它正在工作)。
但是,为什么根据我在firebase中找到的项目打印和循环所有ID。
View the end result in emulator
reference = FirebaseDatabase.getInstance().getReference("Users").child("Location");
GeoFire geoFire = new GeoFire(reference);
double my_lat = -6.2629133;
double my_lon = 106.8355483;
GeoQuery geoQuery = geoFire.queryAtLocation(new GeoLocation(my_lat, my_lon), 0.1);
geoQuery.addGeoQueryEventListener(new GeoQueryEventListener() {
@Override
public void onKeyEntered(String key, GeoLocation location) {
Query locationDataQuery = FirebaseDatabase.getInstance().getReference("Users").child("Cleaner");
locationDataQuery.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
if(dataSnapshot.exists()){
for(DataSnapshot dataSnapshot1: dataSnapshot.getChildren()){
Sitter p = dataSnapshot1.getValue(Sitter.class);
list.add(p);
}
sitterAdapter = new SitterAdapter(MainActivity.this, list);
sitter_place.setAdapter(sitterAdapter);
Toast.makeText(getApplicationContext(), "Data Ada", Toast.LENGTH_SHORT).show();
}
else {
Toast.makeText(getApplicationContext(), "Data Kosong", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
}
我希望输出只有我在firebase中找到的项目,基于我为我的geoquery设置的半径。
好的,我只是在下面解决了它。现在还在弄清楚如何将它填充到RecyclerView(因为我尝试过它总是Object Can not String yadayadayada):
Query locationDataQuery = FirebaseDatabase.getInstance().getReference("Users").child("Cleaner").child(key).child("info");
locationDataQuery.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
if(dataSnapshot.exists()){
Log.w("Name", dataSnapshot.child("cleaner_name").getValue(String.class));
Log.w("ID", dataSnapshot.child("cleaner_id").getValue(String.class));
// for(DataSnapshot dataSnapshot1: dataSnapshot.getChildren()){
// Sitter p = dataSnapshot1.getValue(Sitter.class);
// list.add(p);
// }
sitterAdapter = new SitterAdapter(MainActivity.this, list);
sitter_place.setAdapter(sitterAdapter);
Toast.makeText(getApplicationContext(), "Data Ada", Toast.LENGTH_SHORT).show();
}
else {
Toast.makeText(getApplicationContext(), "Data Kosong", Toast.LENGTH_SHORT).show();
}
}