How delete one item in firebase by key I am try some thing like this but not work with me-CodePudding

I'm get the key like that but this did not work I want to delete one item if click delete by key with out getRf() method the not work with me. I don't know why enter image description here

this does not do anything when clicking button delete

CodePudding user response：

There is no removing code line in your screenshot.

reference2.addListenerForSingleValueEvent(new ValueEventListener() {
    @Override
    public void onDataChange(DataSnapshot dataSnapshot) {
       dataSnapshot.getRef.removeValue();
    }

    @Override
    public void onCancelled(DatabaseError databaseError) {
        //for database error
    }
});

Or simply,

reference2.removeValue();

Don't post your code as image in the next time.

CodePudding user response：

Simply do this

reference2.child(YOUR_ITEM_KEY).setValue(null);