Question

我有一个这样的Android微调器

第一个是项目名称，第二个是他们各自的项目ID。我想在选择项目名称时将相应的项目ID发送到服务器，我也不想显示项目ID。如何解决这个问题是我的代码：

public class Form extends BaseActivity implements AdapterView.OnItemClickListener {

    private static final String REGISTER_URL = "http://url/Service.asmx/GenerateTicket";

    public static final String PREFS_NAME = "MyPrefsFile";

    public static final String CUSTOMERID = "customerId";
    public static final String USERNAME = "name";
    public static final String HOUSENO = "houseNo";
    public static final String LOCALITY = "areaName";
    public static final String SERVICE = "serviceId";
    public static final String MOBILE = "mobile";
    public static final String EMAIL = "email";
    public static final String PROBLEM = "jobBrief";
    private ProgressDialog pDialog;
Spinner spin;
    // flag for Internet connection status
    Boolean isInternetPresent = false;

    // Connection detector class
    ConnectionDetector cd;

//    ArrayList<String> listItems = new ArrayList<>();
//    ArrayAdapter<String> adapter;
private List<Item> customerList = new ArrayList<Item>();
    private SpinAdapter adapter;
    private List<Item> items;

    private EditText editname, houseNo, mobile, email, problem;
    Spinner service_need;
    AutoCompleteTextView autoCompView;
    String obj;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getLayoutInflater().inflate(R.layout.activity_form, frameLayout);
        autoCompView = (AutoCompleteTextView) findViewById(R.id.colony);

        autoCompView.setAdapter(new GooglePlacesAutocompleteAdapter(this, R.layout.list_item));
        autoCompView.setOnItemClickListener(this);

        editname = (EditText) findViewById(R.id.name);
        houseNo = (EditText) findViewById(R.id.houseNo);
//   
        mobile = (EditText) findViewById(R.id.mobile);
        email = (EditText) findViewById(R.id.email);
        problem = (EditText) findViewById(R.id.problem);
        Button submit = (Button) findViewById(R.id.submit);

        pDialog = new ProgressDialog(this);
        cd = new ConnectionDetector(getApplicationContext());
        // get Internet status
        isInternetPresent = cd.isConnectingToInternet();
//      


        assert submit != null;
        submit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                if (editname.getText().toString().trim().equals("")) {
                    Toast.makeText(getApplicationContext(),
                            "Please enter your name", Toast.LENGTH_SHORT)
                            .show();
                } else if (houseNo.toString().trim().equals("")) {
                    Toast.makeText(Form.this, "Please enter your house no", Toast.LENGTH_SHORT).show();

                } else if (autoCompView.toString().trim().equals("")) {
                    Toast.makeText(Form.this, "Please enter your locality", Toast.LENGTH_SHORT).show();}

//                } else if (service_need.getSelectedItem().toString().trim().equals("Select Service")) {
//                    Toast.makeText(Form.this, "Please Select item", Toast.LENGTH_SHORT).show();
//
//                }
                else if (mobile.toString().trim().equals("")) {
                    Toast.makeText(Form.this, "Please enter your mobile number", Toast.LENGTH_SHORT).show();

                }
                else if (mobile.getText().length() < 10) {
                    Toast.makeText(getApplicationContext(),
                            "Please enter valid mobile number", Toast.LENGTH_SHORT)
                            .show();
                }

                else if (problem.toString().trim().equals("")) {
                    Toast.makeText(Form.this, "Please describe your problem", Toast.LENGTH_SHORT).show();
                }

                else if (!email.getText().toString().trim().equals(""))
                {
                    if (!android.util.Patterns.EMAIL_ADDRESS.matcher(
                            email.getText().toString().trim()).matches()) {
                        Toast.makeText(getApplicationContext(),
                                "Please enter valid e-mail id", Toast.LENGTH_SHORT)
                                .show();
                    }
                    else {
                        if (isInternetPresent) {
                            registerUser();
                            pDialog.setMessage("Loading...");
                            pDialog.show();
                            Toast.makeText(getApplicationContext(),
                                    "connecting...", Toast.LENGTH_SHORT)
                                    .show();



                        } else {

                            Toast.makeText(Form.this, "Unable to connect the server, please check your data settings", Toast.LENGTH_LONG)
                                    .show();
                        }
                    }
                }

                else {
                    // Do your stuff


                    if (isInternetPresent) {
                        registerUser();
                        pDialog.setMessage("Loading...");
                        pDialog.show();
                        Toast.makeText(getApplicationContext(),
                                "connecting...", Toast.LENGTH_SHORT)
                                .show();
                    }

                    else {

                        Toast.makeText(Form.this, "Unable to connect the server, please check your data settings", Toast.LENGTH_LONG)
                                .show();
                    }

                }

            }


        });
//   

        spin = (Spinner) findViewById(R.id.service_need);
        adapter = new SpinAdapter(this, customerList);
        spin.setAdapter(adapter);




    }

    private void registerUser() {

        final SharedPreferences mSharedPreference= PreferenceManager.getDefaultSharedPreferences(getBaseContext());
        final String value=(mSharedPreference.getString("customerId", "Default_Value"));



        final String customer_id = value.trim();
        final String username = editname.getText().toString().trim();
        final String house = houseNo.getText().toString().trim();
        final String local_area = autoCompView.getText().toString().trim();


         **Something wrong with this line**
        **final String service = spin.getSelectedItem().toString().trim();**


        final String mobile_no = mobile.getText().toString().trim();
        final String email_id = email.getText().toString().trim();
        final String prob = problem.getText().toString().trim();

        Toast.makeText(Form.this, username.toString(), Toast.LENGTH_LONG).show();
        Toast.makeText(Form.this, service.toString(), Toast.LENGTH_LONG).show();
        Toast.makeText(Form.this, local_area.toString(), Toast.LENGTH_LONG).show();



        StringRequest stringRequest = new StringRequest(Request.Method.POST, REGISTER_URL,
                new Response.Listener<String>() {


                    @Override
                    public void onResponse(String response) {

                        hidePDialog();
                        try {
                            //String result="";
                            //Do it with this it will work
                            JSONArray jsonarray = new JSONArray(response);
                            for (int i = 0; i < jsonarray.length(); i++) {
                                JSONObject person = jsonarray.getJSONObject(i);
                                String excep = person.getString("Exception");
                                String message1 = person.getString("Message");
                                String job = person.getString("JobNo");

                                if (excep.equalsIgnoreCase("True")) {
                                    Toast.makeText(Form.this, excep, Toast.LENGTH_LONG)
                                            .show();
                                } else {

                                    Toast.makeText(Form.this, excep, Toast.LENGTH_LONG)
                                            .show();
                                    editname.setText("");
                                    // if email and mb is valid than login

                                    Intent i1 = new Intent(Form.this, Suceessful.class);
                                    i1.putExtra("job_id", job);
                                    startActivity(i1);
                                    finish();
                                    Toast.makeText(Form.this, excep.toString(), Toast.LENGTH_LONG).show();
                                    Toast.makeText(Form.this, message1.toString(), Toast.LENGTH_LONG).show();
                                    Toast.makeText(Form.this, job.toString(), Toast.LENGTH_LONG).show();
                                }
                            }
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }

                    }
                },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Toast.makeText(Form.this, error.toString(), Toast.LENGTH_LONG).show();

                    }
                }) {
            @Override
            protected Map<String, String> getParams() {
                Map<String, String> params = new HashMap<String, String>();
                params.put(CUSTOMERID,customer_id);
                params.put(USERNAME, username);
                params.put(HOUSENO, house);
                params.put(LOCALITY, local_area);
                params.put(SERVICE, service);
                params.put(MOBILE, mobile_no);
                params.put(EMAIL, email_id);
                params.put(PROBLEM, prob);
                return params;
            }

        };

        RequestQueue requestQueue = Volley.newRequestQueue(this);
        requestQueue.add(stringRequest);
        adapter.notifyDataSetChanged();

    }





        protected Void doInBackground(Void... params) {
            InputStream is = null;
            String result = "";
            try {
                HttpClient httpclient = new DefaultHttpClient();
                HttpPost httppost = new HttpPost("http://url/Service.asmx/GetServiceList");
                HttpResponse response = httpclient.execute(httppost);
                HttpEntity entity = response.getEntity();
                // Get our response as a String.
                is = entity.getContent();
            } catch (IOException e) {
                e.printStackTrace();
            }

            //convert response to string
            try {
                BufferedReader reader = new BufferedReader(new InputStreamReader(is, "utf-8"));
                String line = null;
                while ((line = reader.readLine()) != null) {
                    result += line;
                }
                is.close();
                //result=sb.toString();
            } catch (Exception e) {
                e.printStackTrace();
            }
            // parse json data
            try {
                JSONArray jArray = new JSONArray(result);
                for (int i = 0; i < jArray.length(); i++) {
                    JSONObject obj = jArray.getJSONObject(i);
                    Item customer = new Item();
                    customer.setiD(obj.getString("ServiceId"));
                    customer.setsText(obj.getString("ServiceName"));

                    // adding movie to movies array
                    customerList.add(customer);


                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
//            adapter.notifyDataSetChanged();
            return null;
        }

        protected void onPostExecute(Void result) {
            customerList.addAll(items);
            adapter.notifyDataSetChanged();
        }

    }

    private void hidePDialog() {
        if (pDialog != null) {
            pDialog.dismiss();
            pDialog = null;
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        MenuInflater inflater = getMenuInflater();
//         Inflate menu to add items to action bar if it is present.
        inflater.inflate(R.menu.main, menu);
        MenuItem item = menu.findItem(R.id.refresh);
        item.setVisible(false);
        return true;
    }


}

Answer 1

有几种方法可以实现这一目标。我认为最简单的方法是为您的微调器项创建一个模型类。

public class Item implements Serializable {
    public String sText;
    public int iD;

    public int getiD() {
        return iD;
    }

    public void setiD(int iD) {
        this.iD = iD;
    }

    public Item(String sText, int iD) {
        this.sText = sText;
        this.iD=iD;
    }

    public String getsText() {
        return sText;
    }

    public void setsText(String sText) {
        this.sText = sText;
    }

    @Override
    public boolean equals(Object o) {
        Item item = (Item) o;
        if (item.getiD()==iD)
            return true;
        else
            return false;

    }

    @Override
    public String toString() {
        return this.sText;            // What to display in the Spinner list.
    }
}

在活动课程中，您可以创建ArrayAdapter。

private ArrayAdapter adapter;
private List<Item> items;

在onCreate内初始化列表和适配器并设置适配器。

items= new ArrayList<>();
adapter = new ArrayAdapter<Item>(getActivity(), android.R.layout.simple_spinner_item, items);
service_need.setAdapter(adapter);

将json解析替换为：

// parse json data
            try {
                JSONArray jArray = new JSONArray(result);
                for (int i = 0; i < jArray.length(); i++) {
                    JSONObject jsonObject = jArray.getJSONObject(i);
                    // add interviewee name to arraylist
                    items.add(new Item(jsonObject.getString("ServiceName"),jsonObject.getString("ServiceId")));

                    }
            } catch (JSONException e) {
                e.printStackTrace();
            }

然后在adapter.notifyDataSetChanged()内拨打onPostExecute()。

在onClick中，您可以从微调器中获取客户ID。

submit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
String customer_id=customerList.get(spinner_cat.getSelectedItemPosition()).getiD();

Answer 2

要隐藏ID，您不得将其添加到要传递给微调器的数组中。

使用结构创建具有属性名称和id的对象。

private static class Items
{
    public String name;
    public String id;
}

您可以添加setter和getters方法。创建Items对象列表。从服务器设置name和id的每个对象值。为微调器创建一个字符串数组，按顺序包含Items对象的名称。在微调器的选择事件中，从所选位置获取列表中Items对象的id，并使用它发送到服务器。

Android Spinner的随机商品ID无法正常使用

2 个答案: