如何在 recyclerview 中获取项目的总和？

Question

假设列表中有两个项目 8 和 4。所以我应该得到的总和是 12。但我得到的结果是 84 而不是 12。我是初学者所以我不知道我在这里做错了什么。

private void getCreditEntries() {

    final String shift = kvName.getText().toString();
    final String leaveType = selectLeaveType.getSelectedItem().toString();
    final String employeeCode = empCode.getText().toString();
    final String calendarYear = selectYear.getText().toString();

    DatabaseReference reference = FirebaseDatabase.getInstance().getReference().child("LeaveDetails").child(shift)
            .child("Credit").child(employeeCode).child(calendarYear);
    DatabaseReference dbRef = reference.child(leaveType);

    dbRef.addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
            list = new ArrayList<>();
            if (!dataSnapshot.exists()) {
                creditEntryLayout.setVisibility(View.GONE);
            } else {
                creditEntryLayout.setVisibility(View.VISIBLE);
                for (DataSnapshot snapshot: dataSnapshot.getChildren()) {
                    LeaveCreditData data = snapshot.getValue(LeaveCreditData.class);
                    list.add(data);
                }
                rvCreditEntry.setHasFixedSize(true);
                rvCreditEntry.setLayoutManager(new LinearLayoutManager(LeaveDetails.this));
                rvCreditEntry.setItemAnimator(new DefaultItemAnimator());
                leaveCreditAdapter = new LeaveCreditAdapter(list, LeaveDetails.this);
                rvCreditEntry.setAdapter(leaveCreditAdapter);
                int total = 0;
                for(int i = 0; i < list.size(); i++){
                    total = Integer.parseInt(total + list.get(i).getTotalLeaveCredit());
                    creditSum.setText(String.valueOf( total));

                     //Suppose two Items 8 and 4 are there in the list
                    // So the Sum I should get is 12.
                   // But I am getting result as 84 and not 12
                }
            }
        }

        @Override
        public void onCancelled(@NonNull DatabaseError databaseError) {
            Toast.makeText(LeaveDetails.this, databaseError.getMessage(), Toast.LENGTH_LONG).show();
        }
    });

}

Answer 1

我简单地编辑了如下代码并实现了我想要的。

 int total = 0;
                for(int i = 0; i < list.size(); i++){
                    total += Integer.parseInt(list.get(i).getTotalLeaveCredit());
                    creditSum.setText(String.valueOf( total));
            }

如何在 recyclerview 中获取项目的总和？

How to get sum of a item inside recyclerview?

sum

android-recyclerview