Not able to populate listview from firebase in fragment
I am creating an app that deals with getting data from firebase and inserting it into a fragment list whenever the data changes
I created a method in the fragment activity
public void send(String data)
{
mylist.add(data);
adapter.notifyDataSetChanged();
}
I tried to add the listener in the onStart() of the main activity which sends the data to the fragment
@Override
public void onDataChange(DataSnapshot data)
{
baby = data.getValue(String.class);
frag.send(baby);
}
I didn't get any error but no data was inserted into the fragment list
I would like to if there is anything i am not doing correctly or is there a better approach to it
I referenced the node like this
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
toolbar();
Array=
FirebaseDatabase.getInstance().getReference("Array");
child = Array.child("2");
}
android android-fragments firebase-realtime-database asked Nov 21 '18 at 17:29
Sammy
63
add a comment |
I am creating an app that deals with getting data from firebase and inserting it into a fragment list whenever the data changes
I created a method in the fragment activity
public void send(String data)
{
mylist.add(data);
adapter.notifyDataSetChanged();
}
I tried to add the listener in the onStart() of the main activity which sends the data to the fragment
@Override
public void onDataChange(DataSnapshot data)
{
baby = data.getValue(String.class);
frag.send(baby);
}
I didn't get any error but no data was inserted into the fragment list
I would like to if there is anything i am not doing correctly or is there a better approach to it
I referenced the node like this
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
toolbar();
Array=
FirebaseDatabase.getInstance().getReference("Array");
child = Array.child("2");
}
asked Nov 21 '18 at 17:29
Sammy
63
Please share the lines where you add the data to the database.
– Alex Mamo
Nov 21 '18 at 17:38
Since I was just testing I didn't add it programatically i added the data on firebase directly and I tried to retrieve it in onStart() of main activity and I sent it to the fragment list by calling the send() which either adds the data or updates it
– Sammy
Nov 21 '18 at 22:11
Can you post how are you referencing your listener to the desired node.
– PradyumanDixit
Nov 22 '18 at 5:34
I referenced the node using the method listed on firebase documentation
– Sammy
Nov 22 '18 at 13:40
add a comment |
I am creating an app that deals with getting data from firebase and inserting it into a fragment list whenever the data changes
I created a method in the fragment activity
public void send(String data)
{
mylist.add(data);
adapter.notifyDataSetChanged();
}
I tried to add the listener in the onStart() of the main activity which sends the data to the fragment
@Override
public void onDataChange(DataSnapshot data)
{
baby = data.getValue(String.class);
frag.send(baby);
}
I didn't get any error but no data was inserted into the fragment list
I would like to if there is anything i am not doing correctly or is there a better approach to it
I referenced the node like this
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
toolbar();
Array=
FirebaseDatabase.getInstance().getReference("Array");
child = Array.child("2");
}
asked Nov 21 '18 at 17:29
Sammy
63
I am creating an app that deals with getting data from firebase and inserting it into a fragment list whenever the data changes
I created a method in the fragment activity
public void send(String data)
{
mylist.add(data);
adapter.notifyDataSetChanged();
}
I tried to add the listener in the onStart() of the main activity which sends the data to the fragment
@Override
public void onDataChange(DataSnapshot data)
{
baby = data.getValue(String.class);
frag.send(baby);
}
I didn't get any error but no data was inserted into the fragment list
I would like to if there is anything i am not doing correctly or is there a better approach to it
I referenced the node like this
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
toolbar();
Array=
FirebaseDatabase.getInstance().getReference("Array");
child = Array.child("2");
}
asked Nov 21 '18 at 17:29
Sammy
63
asked Nov 21 '18 at 17:29
Sammy
63
edited Nov 22 '18 at 13:36
asked Nov 21 '18 at 17:29
Sammy
63
asked Nov 21 '18 at 17:29
Sammy
63
asked Nov 21 '18 at 17:29
Sammy
63
63
Please share the lines where you add the data to the database.
– Alex Mamo
Nov 21 '18 at 17:38
Since I was just testing I didn't add it programatically i added the data on firebase directly and I tried to retrieve it in onStart() of main activity and I sent it to the fragment list by calling the send() which either adds the data or updates it
– Sammy
Nov 21 '18 at 22:11
Can you post how are you referencing your listener to the desired node.
– PradyumanDixit
Nov 22 '18 at 5:34
I referenced the node using the method listed on firebase documentation
– Sammy
Nov 22 '18 at 13:40
add a comment |
Please share the lines where you add the data to the database.
– Alex Mamo
Nov 21 '18 at 17:38
Since I was just testing I didn't add it programatically i added the data on firebase directly and I tried to retrieve it in onStart() of main activity and I sent it to the fragment list by calling the send() which either adds the data or updates it
– Sammy
Nov 21 '18 at 22:11
Can you post how are you referencing your listener to the desired node.
– PradyumanDixit
Nov 22 '18 at 5:34
I referenced the node using the method listed on firebase documentation
– Sammy
Nov 22 '18 at 13:40
Please share the lines where you add the data to the database.
– Alex Mamo
Nov 21 '18 at 17:38
Please share the lines where you add the data to the database.
– Alex Mamo
Nov 21 '18 at 17:38
Since I was just testing I didn't add it programatically i added the data on firebase directly and I tried to retrieve it in onStart() of main activity and I sent it to the fragment list by calling the send() which either adds the data or updates it
– Sammy
Nov 21 '18 at 22:11
Since I was just testing I didn't add it programatically i added the data on firebase directly and I tried to retrieve it in onStart() of main activity and I sent it to the fragment list by calling the send() which either adds the data or updates it
– Sammy
Nov 21 '18 at 22:11
Can you post how are you referencing your listener to the desired node.
– PradyumanDixit
Nov 22 '18 at 5:34
Can you post how are you referencing your listener to the desired node.
– PradyumanDixit
Nov 22 '18 at 5:34
I referenced the node using the method listed on firebase documentation
– Sammy
Nov 22 '18 at 13:40
I referenced the node using the method listed on firebase documentation
– Sammy
Nov 22 '18 at 13:40
add a comment |
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Please share the lines where you add the data to the database.
– Alex Mamo
Nov 21 '18 at 17:38
Since I was just testing I didn't add it programatically i added the data on firebase directly and I tried to retrieve it in onStart() of main activity and I sent it to the fragment list by calling the send() which either adds the data or updates it
– Sammy
Nov 21 '18 at 22:11
Can you post how are you referencing your listener to the desired node.
– PradyumanDixit
Nov 22 '18 at 5:34
I referenced the node using the method listed on firebase documentation
– Sammy
Nov 22 '18 at 13:40