"how to add new child in firebase database android" Code Answer

you'll need to call push() to generate a unique key for the new data:

databasereference mdatabase = firebasedatabase.getinstance().getreference() 
mdatabase.push().setvalue(1);

this will append the new value at the end of the list.

by combining the push() and child() methods, you can create multiple lists of children in the database:

mdatabase.child("numbers").push().setvalue(1);
mdatabase.child("numbers").push().setvalue(53);
mdatabase.child("numbers").push().setvalue(42);

mdatabase.child("letters").push().setvalue("a");
mdatabase.child("letters").push().setvalue("z");
mdatabase.child("letters").push().setvalue("c");

see the section append to a list of data in the firebase documentation.

By Anderson Silva on May 28 2022