Firebase获取推送键字符串

按下后即可获得唯一密钥

DatabaseReference newDatabaseReference = mDatabaseReference.child("loccheck").push();
newDatabaseReference.getKey();

或搭配 setValue()

mDatabaseReference.child("loccheck")
        .push()
        .setValue(cloc, new DatabaseReference.CompletionListener() {
            @Override
            public void onComplete(DatabaseError databaseError,
                    DatabaseReference databaseReference) {
                 String uniqueKey = databaseReference.getKey();
            }
        });