TabHost, ListView и custom Adapter
09.12.2013, 21:35. Показов 2193. Ответов 1
Здравствуйте. В общем есть TabHost c 3 вкладками. При нажатии на вкладку ХЗ показаться данные в ListView, но у меня при нажатии на эту вкладку приложение выдает ошибку и закрывается. Вот код для AndroidTabAndListView (для вкладок)
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| import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;
public class AndroidTabAndListView extends TabActivity {
// TabSpec Names
private static final String INBOX_SPEC = "Inbox";
private static final String OUTBOX_SPEC = "Profile";
private static final String PROFILE_SPEC = "ХЗ";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TabHost tabHost = getTabHost();
// Inbox Tab
TabSpec inboxSpec = tabHost.newTabSpec(INBOX_SPEC);
// Tab Icon
inboxSpec.setIndicator(INBOX_SPEC, getResources().getDrawable(R.drawable.arrow));
Intent inboxIntent = new Intent(this, InboxActivity.class);
// Tab Content
inboxSpec.setContent(inboxIntent);
// Outbox Tab
TabSpec outboxSpec = tabHost.newTabSpec(OUTBOX_SPEC);
outboxSpec.setIndicator(OUTBOX_SPEC, getResources().getDrawable(R.drawable.rihanna));
Intent outboxIntent = new Intent(this, OutboxActivity.class);
outboxSpec.setContent(outboxIntent);
// Profile Tab
TabSpec profileSpec = tabHost.newTabSpec(PROFILE_SPEC);
profileSpec.setIndicator(PROFILE_SPEC, getResources().getDrawable(R.drawable.arrow));
Intent profileIntent = new Intent(this, CustomizedListView.class);
profileSpec.setContent(profileIntent);
// Adding all TabSpec to TabHost
tabHost.addTab(inboxSpec); // Adding Inbox tab
tabHost.addTab(outboxSpec); // Adding Outbox tab
tabHost.addTab(profileSpec); // Adding Profile tab
}
} |
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Содержимое CustomizedListView.java (для парсинга xml)
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| import java.util.ArrayList;
import java.util.HashMap;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import android.app.Activity;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
public class CustomizedListView extends ListActivity {
// All static variables
static final String URL = "https://api.api2cart.com/v1.0/product.list.xml?api_key=6aed775211e8c3d556db063d12125d2d&store_key=ed58a22dfecb405a50ea3ea56979360d&start=0&count=19¶ms=id,u_model,name,price,images,short_description";
// XML node keys
static final String KEY_SONG = "product"; // parent node
static final String KEY_ID = "id";
static final String KEY_TITLE = "u_model";
static final String KEY_ARTIST = "name";
static final String KEY_DURATION = "price";
static final String KEY_THUMB_URL = "http_path";
static final String KEY_SHORT_DESCRIPTION = "short_description";
ListView list;
LazyAdapter adapter;
//@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML from URL
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_SONG);
// looping through all song nodes <song>
for (int i = 0; i < nl.getLength(); i++) {
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
// adding each child node to HashMap key => value
map.put(KEY_ID, parser.getValue(e, KEY_ID));
map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE));
map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST));
map.put(KEY_DURATION, parser.getValue(e, KEY_DURATION));
map.put(KEY_SHORT_DESCRIPTION, parser.getValue(e, KEY_SHORT_DESCRIPTION));
map.put(KEY_THUMB_URL, parser.getValue(e, KEY_THUMB_URL));
// adding HashList to ArrayList
songsList.add(map);
}
list=(ListView)findViewById(R.id.list);
// Getting adapter by passing xml data ArrayList
adapter=new LazyAdapter(CustomizedListView.this, songsList);
list.setAdapter(adapter);
// Click event for single list row
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
}
});
}
} |
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Содержимое LazyAdapter.java (адаптер)
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| package com.example.androidhive;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class LazyAdapter extends BaseAdapter {
public Activity activity;
public ArrayList<HashMap<String, String>> data;
public static LayoutInflater inflater=null;
public ImageLoader imageLoader;
public LazyAdapter(Activity a, ArrayList<HashMap<String, String>> d) {
activity = a;
data=d;
inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
imageLoader=new ImageLoader(activity.getApplicationContext());
}
public int getCount() {
return data.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
View vi=convertView;
if(convertView==null)
vi = inflater.inflate(R.layout.list_row, null);
TextView title = (TextView)vi.findViewById(R.id.title); // title
TextView artist = (TextView)vi.findViewById(R.id.artist); // artist name
TextView duration = (TextView)vi.findViewById(R.id.duration); // duration
TextView short_description = (TextView)vi.findViewById(R.id.short_description);
ImageView thumb_image=(ImageView)vi.findViewById(R.id.list_image); // thumb image
HashMap<String, String> song = new HashMap<String, String>();
song = data.get(position);
// Setting all values in listview
title.setText(song.get(CustomizedListView.KEY_TITLE));
artist.setText(song.get(CustomizedListView.KEY_ARTIST));
duration.setText(song.get(CustomizedListView.KEY_DURATION));
short_description.setText(song.get(CustomizedListView.KEY_SHORT_DESCRIPTION));
imageLoader.DisplayImage(song.get(CustomizedListView.KEY_THUMB_URL), thumb_image);
return vi;
}
} |
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Содержимое LogCat:
12-09 16:57:11.791: E/AndroidRuntime(445): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.androidhive/com.example.androidhive.CustomizedListVi ew}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
Добавлено через 25 минут
Сам разобрался. Может кому поможет: в xml файле, где используется ListView android:id написать как | Java | 1
2
| <ListView
android:id="@android:id/list" |
|
Вместо | Java | 1
| ListView list=(ListView)findViewById(R.id,list); |
|
написать
| Java | 1
| ListView list=getListView(); |
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0
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