如何从特定列表项位置的不同api获取数据

Question

无法通过listview获得不同的项目点击获得不同的API数据

ApiAllEmailInterface apiInterface = (ApiAllEmailInterface) ApiEmailClient.getApi();

Call<EmailModel> call = apiInterface.getResult(email);
call.enqueue(new Callback<EmailModel>() {
    @Override
    public void onResponse(Call<EmailModel> call, Response<EmailModel> response) {
        if (!response.isSuccessful()) {
            return;
        }
        Log.d("result", "onResponse: " + response.body());
        Log.d("result1", "onResponse1: " + response);
        EmailModel model = response.body();

        List<String> listContents = new ArrayList<String>(model.getContents().size());
        String[] passwords = new String[model.getContents().size()];
        for(int i=0;i<model.getContents().size();i++) {
            passwords[i]=model.getContents().get(i).getPassword();
            listContents.add(passwords[i]);
        }

        lvone.setAdapter((new ArrayAdapter<String>(getApplicationContext(), R.layout.listview_items, listContents)));
        lvone.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                String value = (String)parent.getItemAtPosition(position);
                MainActivity ma = null;
                ma.hitApi();
            }
        });

在onItemClick中，如何使用我的MainActivity类中的API响应，因为它是我的Login类，并且使用不同的密码，在我的主屏幕上，但是现在如何在listview中获取该登录API的响应在特定项目上单击？