如何让计数器在android studio中递增

Question

我试图让 i 的值增加，但它似乎只是在这里重复 2 的值。我认为它应该保持递增 1，因为我在开始时将值设置为 1，但此处未显示，因为它靠近我的班级顶部..

public void onDataChange(@NonNull DataSnapshot snapshot) {
    for (DataSnapshot childSnapshot : snapshot.getChildren()) {

        String clinic_info = String.valueOf(childSnapshot.child("Name").getValue());
        String txt_review = review.getText().toString();
        String txt_dorevitch = dorevitch.getText().toString();
        String txt_skin_cancer = skin_cancer_check.getText().toString();
        String txt_ear_suctioning = ear_suctioning.getText().toString();

        message[0] = message[0].split("\\s*:\\s*")[0]; // use this to get the name of the clinic only..
        //   replace(":" ,"");
        //    message[0] = message[0].replaceAll("[0-9]" ,"");
        //   message[0] = message[0].replace("Shop" ,"");
        //
        assert clinic_info != null;
        if (clinic_info.equals(message[0])) {

            HashMap<String, Object> map = new HashMap<>();
            map.put("Review" + i, txt_review);

            i = (int)snapshot.getChildrenCount();

            i++;

            System.out.println(i);
            FirebaseDatabase.getInstance("https://medical-review-in-australia.firebaseio.com/").getReference().child(message[0]).updateChildren(map);
            Toast.makeText(Add_Review.this, "Review Successfully Submited", Toast.LENGTH_SHORT).show();
        } else {


            Toast.makeText(Add_Review.this, "There was an error while updating the database, please try again.", Toast.LENGTH_SHORT).show();
        }

Answer 1

问题似乎在于您没有更新i 的值。 i = i + 1 将起作用，因为您没有更改 i 的值。你可以试试打印System.out.println(i++);