android - ListView onItemClickListener 不工作 Android

Question

我看过很多帖子，很多教程，但我找不到完成这项工作的关键。我有一个带有好友请求的 ListView ，因为你看到这些请求有 2 个按钮(接受或拒绝)，我想知道我怎么知道点击了哪个按钮(目前它甚至无法告诉我是否点击了一个项目).

请帮忙，我很绝望。

这是 Activity 的代码

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListAdapter;
import android.widget.SimpleAdapter;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Toast;

public class Solicitudes extends Activity {
    private ProgressDialog pDialog;
    private static final String SOLICITUDES_URL = "http://192.168.56.1/webservice/cargarSolicitudes.php";
    JSONParser jsonParser = new JSONParser();
    private ListView lv;
    // JSON IDS:

    private static final String TAG_POSTS = "posts";

    private static final String TAG_USERNAME = "username";
    private HashMap<String, String> user;
    SessionManager session;

    // array con los amigos
    private JSONArray mAmigos = null;
    // organiza los amigos en una lista.
    private ArrayList<HashMap<String, String>> mAmigosList;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_solicitudes);
        lv = (ListView) findViewById(R.id.listViewSolicitudes);
        lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                // ListView Clicked
                int itemPosition = position;

                // ListView Clicked
                String itemValue = (String) lv.getItemAtPosition(position);

                // Show Alert
                Toast.makeText(
                        getApplicationContext(),
                        "Position :" + itemPosition + "  ListItem : "
                                + itemValue, Toast.LENGTH_LONG).show();


            }
        });


    }

    private void updateList() {
        // Para un ListActivity tenemos que tener un List Adapter. Este
        // simpleAdapter
        // utilizará nuestro ArrayList Hashmap actualizado. Utilizo
        // single_request.xml para
        // cada item en la lista y pongo la informaación correcta para cada ID.

        ListAdapter adapter = new SimpleAdapter(this, mAmigosList,
                R.layout.single_request, new String[] { TAG_USERNAME },
                new int[] { R.id.textViewAmigoUsuario });

        lv.setAdapter(adapter);

    }

    public void updateJSONdata() {
        // Session class instance
        session = new SessionManager(getApplicationContext());
        // get user data from session
        user = session.getUserDetails();
        String username = user.get(SessionManager.KEY_USERNAME);
        List<NameValuePair> params = new ArrayList<NameValuePair>();
        params.add(new BasicNameValuePair("username", username));
        mAmigosList = new ArrayList<HashMap<String, String>>();

        JSONObject json = jsonParser.makeHttpRequest(SOLICITUDES_URL, "POST",
                params);

        // cuando parseamos JSON es conveniente hacer un catch de las
        // excepciones

        try {

            mAmigos = json.getJSONArray(TAG_POSTS);

            // Iterando para todos los post que nos devuelve el objeto json
            for (int i = 0; i < mAmigos.length(); i++) {
                JSONObject c = mAmigos.getJSONObject(i);

                // devuelve el contenido de la etiqueta
                String idUser1 = c.getString(TAG_USERNAME);

                // creando un nuevo HashMap
                HashMap<String, String> map = new HashMap<String, String>();

                map.put(TAG_USERNAME, idUser1);
                // map.put(TAG_ID2, idUser2);

                // agrego el HashList al ArrayList
                mAmigosList.add(map);

            }

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

    @Override
    public void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        // cargando los amigos a través de AsynTask
        new buscarSolicitudes().execute();
    }

    public class buscarSolicitudes extends AsyncTask<Void, Void, Boolean> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            pDialog = new ProgressDialog(getApplicationContext());
            pDialog.setMessage("Cargando solicitudes...");
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(true);
        }

        @Override
        protected Boolean doInBackground(Void... arg0) {
            updateJSONdata();
            return null;

        }

        @Override
        protected void onPostExecute(Boolean result) {
            super.onPostExecute(result);
            pDialog.dismiss();
            updateList();
        }
    }


}

activity_layout的代码

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#ffffff"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".Buscar" >

    <TextView
        android:id="@+id/textViewSolicitudes"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_margin="10dp"
        android:gravity="center"
        android:text="@string/solicitudes"
        android:textColor="@color/AzulClaro" />


    <ListView 
        android:id="@+id/listViewSolicitudes"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@android:id/empty"
        android:layout_below="@id/textViewSolicitudes"
        tools:listitem="@layout/single_request"
        android:focusable="false"
        android:descendantFocusability="blocksDescendants"
        android:drawSelectorOnTop="true" />

</RelativeLayout>

以及关于 single_request 布局的代码

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:background="#f0f0f0"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:orientation="vertical" >

        <LinearLayout
            android:id="@+id/boxSF1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="2dp"
            android:orientation="horizontal" >

            <ImageView
                android:id="@+id/imageUser"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/perfildefecto" />

            <RelativeLayout
                android:id="@+id/boxSF2"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_margin="2dp"
                android:orientation="vertical"
                android:padding="5dp" >

                <TextView
                    android:id="@+id/textViewAmigoUsuario"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="bottom"
                    android:paddingBottom="2dip"
                    android:paddingLeft="5dp"
                    android:paddingTop="6dip"
                    android:textColor="#333"
                    android:textSize="16sp"
                    android:textStyle="bold" />


                    <Button
                        android:id="@+id/btnEliminar"
                        android:layout_width="20dp"
                        android:layout_height="20dp"
                        android:layout_alignParentRight="true"
                        android:layout_below="@+id/textViewSolicitud"
                        android:layout_marginTop="30dp"
                        android:background="@drawable/denegar"
                        android:max="100" />

                    <Button
                        android:id="@+id/btnAgregar"
                        android:layout_width="20dp"
                        android:layout_height="20dp"
                        android:layout_alignBaseline="@+id/btnEliminar"
                        android:layout_alignBottom="@+id/btnEliminar"
                        android:layout_marginRight="24dp"
                        android:layout_toLeftOf="@+id/btnEliminar"
                        android:background="@drawable/aceptar"
                        android:max="100" />

                    <TextView
                        android:id="@+id/textViewSolicitud"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_centerHorizontal="true"
                        android:layout_centerVertical="true"
                        android:layout_below="@id/textViewAmigoUsuario"
                        android:layout_margin="10dp"
                        android:gravity="left"
                        android:text="@string/friend_request"
                        android:textColor="@color/AzulClaro" />

            </RelativeLayout>
        </LinearLayout>
    </LinearLayout>

</LinearLayout>

Answer 1

onItemClicked 未被调用，因为在您的行中有 Button。添加

android:descendantFocusability="blocksDescendants"

到你的 single_request 布局的根