android - 如何将事件处理程序添加到 Android Listview 中的按钮？

Question

ListView 中的项目是使用 PHP 生成的，并存储在 MySQL 数据库中。如何添加绑定(bind)到按钮的事件处理函数？我需要的过程是这样的:当你点击按钮时，它会获取项目并将其保存到其他表，同时还获取当前日期时间。

public class ViewBusFiveStudent extends AppCompatActivity implements ListView.OnItemClickListener {

private ListView listView;
private Button btntime;
private String JSON_STRING;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_view_busfour);
    listView = (ListView) findViewById(R.id.listView);
    listView.setOnItemClickListener(this);

    getJSON();
}


private void showStudents(){
    JSONObject jsonObject = null;
    ArrayList<HashMap<String,String>> list = new ArrayList<HashMap<String, String>>();
    try {
        jsonObject = new JSONObject(JSON_STRING);
        JSONArray result = jsonObject.getJSONArray(Config.TAG_JSON_ARRAY);

        for(int i = 0; i<result.length(); i++){
            JSONObject jo = result.getJSONObject(i);
            String id = jo.getString(Config.TAG_ID);
            String name = jo.getString(Config.TAG_NAME);

            HashMap<String,String> student = new HashMap<>();
            student.put(Config.TAG_ID,id);
            student.put(Config.TAG_NAME,name);
            list.add(student);
        }

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

    ListAdapter adapter = new SimpleAdapter(
            ViewBusFiveStudent.this, list, R.layout.list_items,
            new String[]{Config.TAG_ID,Config.TAG_NAME},
            new int[]{R.id.id, R.id.name});

    listView.setAdapter(adapter);
}

private void getJSON(){
    class GetJSON extends AsyncTask<Void,Void,String>{

        ProgressDialog loading;
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            loading = ProgressDialog.show(ViewBusFiveStudent.this,"Fetching Data","Wait...",false,false);
        }

        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            loading.dismiss();
            JSON_STRING = s;
            showStudents();
        }

        @Override
        protected String doInBackground(Void... params) {
            RequestHandler rh = new RequestHandler();
            String s = rh.sendGetRequest(Config.URL_GET_BUS_FOUR);
            return s;
        }
    }
    GetJSON gj = new GetJSON();
    gj.execute();
}

@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    Intent intent = new Intent(this, ViewBusFive.class);
    HashMap<String,String> map =(HashMap)parent.getItemAtPosition(position);
    String studId = map.get(Config.TAG_ID).toString();
    intent.putExtra(Config.STUD_ID,studId);
    startActivity(intent);
}
}

这是我的 ListView :

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

<RelativeLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

<TextView
    android:id="@+id/id"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

<TextView
    android:id="@+id/name"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/id"/>

    <CheckBox
        android:id="@+id/checkBoxPres"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:focusable="false"
        android:focusableInTouchMode="false"
        android:text=""
        android:layout_alignBaseline="@+id/btnTime"
        android:layout_alignBottom="@+id/btnTime"
        android:layout_toLeftOf="@+id/btnTime"
        android:layout_toStartOf="@+id/btnTime" />

    <Button
        android:text="TimeStamp"
        android:layout_width="105dp"
        android:layout_alignParentRight="true"
        android:layout_height="wrap_content"
        android:id="@+id/btnTime" />

</RelativeLayout>

我只想知道如何定义单击按钮时调用的函数以及我可以将其放置在何处。

Answer 1

我已经更改了 onitemclick 的代码，我可以单击 ListView 中的按钮，但只有一个按钮可用/可单击。

public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    final TextView name1 = (TextView) findViewById(R.id.name);
    btnTime = (Button) findViewById(R.id.btnTime);
    btnTime.setTag(position);
    btnTime.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            BusArrived();
        }

        public void BusArrived() {

            final String name = name1.getText().toString().trim();

            class SendStudent extends AsyncTask<Void, Void, String> {

                ProgressDialog loading;

                @Override
                protected void onPreExecute() {
                    super.onPreExecute();
                    loading = ProgressDialog.show(ViewBusFiveStudent.this, "Saving Dismissal Time...", "Wait...", false, false);
                }

                @Override
                protected void onPostExecute(String s) {
                    super.onPostExecute(s);
                    loading.dismiss();
                    Toast.makeText(ViewBusFiveStudent.this, s, Toast.LENGTH_LONG).show();
                }

                @Override
                protected String doInBackground(Void... v) {
                    HashMap<String, String> params = new HashMap<>();
                    params.put(Config.KEY_STUD_NAME, name);

                    RequestHandler rh = new RequestHandler();
                    String res = rh.sendPostRequest(Config.URL_SAVING_TO_BUS_FIVE_TIME, params);
                    return res;
                }
            }

            SendStudent ae = new SendStudent();
            ae.execute();
        }
    });
}

请在这里纠正我的错误。谢谢!