Question

我有这个片段：http://pastebin.com/zj5DLpwX 但我的onItemClickListener无法正常工作，它不会打开DetailActivity ... 我刚刚添加了xml布局，你需要一些代码吗？有什么想法吗？

fragment_v：

<?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="fill_parent"
            android:orientation="vertical">

            <ListView
                android:id="@android:id/list"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"/>

        </LinearLayout>`

LIST_ITEM：

<?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:orientation="vertical"
            android:padding="10dp"
            android:paddingLeft="10dp"
            android:paddingRight="10dp" >

            <!-- Name Label -->

            <TextView
                android:id="@+id/name"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:paddingBottom="2dip"
                android:paddingTop="6dip"
                android:textColor="#43bd00"
                android:textSize="16sp"
                android:textStyle="bold" />

            <!-- Email label -->
            <TextView
                android:id="@+id/email"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:paddingBottom="2dip"
                android:textColor="#acacac" />

            <!-- Mobile number label -->
            <TextView
                android:id="@+id/mobile"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:gravity="left"
        android:text="Mobile: "
        android:textColor="#5d5d5d"
        android:textStyle="bold" />

        </LinearLayout>`

这是片段代码

package com.tw.vp;


import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.ListFragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.LinearLayout;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

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


/**
 * A simple {@link Fragment} subclass.
 */
public class VFragment extends ListFragment {

    private ProgressDialog pDialog;

    // URL to get contacts JSON
    private static String url = "http://api.androidhive.info/contacts/";

    // JSON Node names
    private static final String TAG_CONTACTS = "contacts";
    private static final String TAG_ID = "id";
    private static final String TAG_NAME = "name";
    private static final String TAG_EMAIL = "email";
    private static final String TAG_ADDRESS = "address";
    private static final String TAG_GENDER = "gender";
    private static final String TAG_PHONE = "phone";
    private static final String TAG_PHONE_MOBILE = "mobile";
    private static final String TAG_PHONE_HOME = "home";
    private static final String TAG_PHONE_OFFICE = "office";

    // contacts JSONArray
    JSONArray contacts = null;

    // Hashmap for ListView
    ArrayList<HashMap<String, String>> contactList;


   // public VFragment() {
        // Required empty public constructor
    //}


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View v= inflater.inflate(R.layout.fragment_v, container, false);
        ListView lv =(ListView)v.findViewById(android.R.id.list);

        contactList = new ArrayList<HashMap<String, String>>();



        // Listview on item click listener
        lv.setOnItemClickListener( new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                                    int position, long id) {

                Log.d("Aufruf", "onItemClick");
                // getting values from selected ListItem
                String name = ((TextView) view.findViewById(R.id.name))
                        .getText().toString();
                String cost = ((TextView) view.findViewById(R.id.email))
                        .getText().toString();
                String description = ((TextView) view.findViewById(R.id.mobile))
                        .getText().toString();

                // Starting single contact activity
                Intent in = new Intent(getActivity(), DetailActivity.class);
                in.putExtra(TAG_NAME, name);
                in.putExtra(TAG_EMAIL, cost);
                in.putExtra(TAG_PHONE_MOBILE, description);
                startActivity(in);

            }
        });

        // Calling async task to get json
        new GetContacts().execute();


        return v;
    }

    /**
     * Async task class to get json by making HTTP call
     * */
    private class GetContacts extends AsyncTask<Void, Void, Void> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            // Showing progress dialog
            pDialog = new ProgressDialog(getActivity());
            pDialog.setMessage("Please wait...");
            pDialog.setCancelable(false);
            pDialog.show();

        }

        @Override
        protected Void doInBackground(Void... arg0) {
            // Creating service handler class instance
            ServiceHandler sh = new ServiceHandler();

            // Making a request to url and getting response
            String jsonStr = sh.makeServiceCall(url, ServiceHandler.GET);

            Log.d("Response: ", "> " + jsonStr);

            if (jsonStr != null) {
                try {
                    JSONObject jsonObj = new JSONObject(jsonStr);

                    // Getting JSON Array node
                    contacts = jsonObj.getJSONArray(TAG_CONTACTS);

                    // looping through All Contacts
                    for (int i = 0; i < contacts.length(); i++) {
                        JSONObject c = contacts.getJSONObject(i);

                        String id = c.getString(TAG_ID);
                        String name = c.getString(TAG_NAME);
                        String email = c.getString(TAG_EMAIL);
                        String address = c.getString(TAG_ADDRESS);
                        String gender = c.getString(TAG_GENDER);

                        // Phone node is JSON Object
                        JSONObject phone = c.getJSONObject(TAG_PHONE);
                        String mobile = phone.getString(TAG_PHONE_MOBILE);
                        String home = phone.getString(TAG_PHONE_HOME);
                        String office = phone.getString(TAG_PHONE_OFFICE);

                        // tmp hashmap for single contact
                        HashMap<String, String> contact = new HashMap<String, String>();

                        // adding each child node to HashMap key => value
                        contact.put(TAG_ID, id);
                        contact.put(TAG_NAME, name);
                        contact.put(TAG_EMAIL, email);
                        contact.put(TAG_PHONE_MOBILE, mobile);

                        // adding contact to contact list
                        contactList.add(contact);
                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            } else {
                Log.e("ServiceHandler", "Couldn't get any data from the url");
            }

            return null;
        }

        @Override
        protected void onPostExecute(Void result) {
            super.onPostExecute(result);
            // Dismiss the progress dialog
            if (pDialog.isShowing())
                pDialog.dismiss();
            /**
             * Updating parsed JSON data into ListView
             * */
            ListAdapter adapter = new SimpleAdapter(
                    getActivity(), contactList,
                    R.layout.list_item,
                    new String[] { TAG_NAME, TAG_EMAIL,
                    TAG_PHONE_MOBILE },
                    new int[] { R.id.name,
                    R.id.email, R.id.mobile });

            setListAdapter(adapter);
        }

    }

}

Answer 1

尝试添加

android:descendantFocusability="blocksDescendants"

到list_item xml

中的LinearLayout

Answer 2

如果您使用的是ListFragment，则可以使用override方法onListItemClick()。

@Override
public void onListItemClick(ListView l, View v, int position, long id) {
     // TODO Auto-generated method stub
     super.onListItemClick(l, v, position, id);

     // Your Stuff Goes Here
}

并在list元素的根布局中添加android:descendantFocusability="blocksDescendants"。

Answer 3

从代码中更改以下代码： -

ListView lv;

//code to get the listView instance using findViewByID etc

lv.setOnItemClickListener(new OnItemClickListener()
{
    @Override public void onItemClick(AdapterView<?> arg0, View arg1,int position, long arg3)
    { 
        Toast.makeText(EnclosingActivity.this, "Clicking me", Toast.LENGTH_SHORT).show();
    }
});

片段中的ListView - onItemClickListener无法正常工作

3 个答案: