碎片不会从抽屉式导航加载点击监听器 [英] Fragments are not loaded from Navigation Drawer Click Listener
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问题描述
Android的OnItemClickListener不工作。我已经研究了一些previous类似的问题我找不到任何解决我的问题。
Android OnItemClickListener is not working. I have already researched some of the previous similar questions I could not find any solution to my problem.
我觉得 Log.d（TAG，产品按工作）; 在logcat的，但我不能够打开一个新片段
I find Log.d("TAG", "Item Click Working"); in the Logcat but I am not able to open a new fragment.
我附上低于code。
**MainActivity**
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.json.JSONException;
import org.json.JSONObject;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.Cache;
import com.android.volley.Cache.Entry;
import com.android.volley.Request.Method;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.VolleyLog;
import com.android.volley.toolbox.JsonObjectRequest;
import com.sri.vaavefeed.adapter.FeedListAdapter;
import com.sri.vaavefeed.app.AppController;
import com.sri.vaavefeed.data.FeedItem;
public class MainActivity extends Activity implements OnItemClickListener
{
private static final String TAG = MainActivity.class.getSimpleName();
private ListView listView;
private FeedListAdapter listAdapter;
private List<FeedItem> feedItems;
private String URL_FEED = "http://coherendz.net/vaavefeed1.json";
int node_type;
FeedItem item;
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
private ArrayList<NavDrawerItem> navDrawerItems;
private TypedArray navMenuIcons;
private NavDrawerListAdapter adapter;
// nav drawer title
private CharSequence mDrawerTitle;
// used to store app title
private CharSequence mTitle;
// slide menu items
private String[] navMenuTitles;
private myAdapter myadapter;
private int node_id;
private String comments_count;
private String like_count;
private String readable_date;
private String name;
private String description;
@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTitle = mDrawerTitle = getTitle();
navMenuTitles = getResources().getStringArray(R.array.Options);
// nav drawer icons from resources
navMenuIcons = getResources()
.obtainTypedArray(R.array.nav_drawer_icons);
listView = (ListView) findViewById(R.id.list);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
mDrawerList = (ListView) findViewById(R.id.drawerList);
mDrawerList.setItemsCanFocus(true);
mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
getActionBar().setHomeButtonEnabled(true);
getActionBar().setDisplayHomeAsUpEnabled(true);
feedItems = new ArrayList<FeedItem>();
listAdapter = new FeedListAdapter(this, feedItems);
listView.setAdapter(listAdapter);
// These two lines not needed,
// just to get the look of facebook (changing background color & hiding the icon)
getActionBar().setBackgroundDrawable(new ColorDrawable(Color.parseColor("#3b5998")));
getActionBar().setIcon(
new ColorDrawable(getResources().getColor(android.R.color.transparent)));
// We first check for cached request
Cache cache = AppController.getInstance().getRequestQueue().getCache();
Entry entry = cache.get(URL_FEED);
if (entry != null) {
// fetch the data from cache
try {
String data = new String(entry.data, "UTF-8");
try {
parseJsonFeed(new JSONObject(data));
} catch (JSONException e) {
e.printStackTrace();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
} else {
// making fresh volley request and getting json
JsonObjectRequest jsonReq = new JsonObjectRequest(Method.GET,
URL_FEED, null, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
VolleyLog.d(TAG, "Response: " + response.toString());
if (response != null) {
parseJsonFeed(response);
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
}
});
// Adding request to volley request queue
AppController.getInstance().addToRequestQueue(jsonReq);
}
mTitle = mDrawerTitle = getTitle();
navDrawerItems = new ArrayList<NavDrawerItem>();
// adding nav drawer items to array
// Home
navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1)));
// Find People
navDrawerItems.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1)));
// Photos
navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1)));
// Communities, Will add a counter here
navDrawerItems.add(new NavDrawerItem(navMenuTitles[3], navMenuIcons.getResourceId(3, -1), true, "22"));
// Pages
navDrawerItems.add(new NavDrawerItem(navMenuTitles[4], navMenuIcons.getResourceId(4, -1)));
// What's hot, We will add a counter here
navDrawerItems.add(new NavDrawerItem(navMenuTitles[5], navMenuIcons.getResourceId(5, -1), true, "50+"));
// Recycle the typed array
navMenuIcons.recycle();
// setting the nav drawer list adapter
adapter = new NavDrawerListAdapter(getApplicationContext(),
navDrawerItems);
/* myadapter = new myAdapter(this);*/
mDrawerList.setAdapter(adapter);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.ic_drawer, //nav menu toggle icon
R.string.drawer_open, // nav drawer open - description for accessibility
R.string.drawer_close // nav drawer close - description for accessibility
)
{
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
// calling onPrepareOptionsMenu() to show action bar icons
invalidateOptionsMenu();
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
// calling onPrepareOptionsMenu() to hide action bar icons
invalidateOptionsMenu();
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
// on first time display view for first nav item
displayView(0);
}
}
/**
* Parsing json reponse and passing the data to feed view list adapter
* */
private void parseJsonFeed(JSONObject response) {
@SuppressWarnings("rawtypes")
Iterator itr = response.keys();
int i = 0;
try
{
while(itr.hasNext())
{
String key = itr.next().toString();
JSONObject entry = response.getJSONObject(key);
JSONObject phone = entry.getJSONObject("basic");
name = phone.getString("title");
description = phone.getString("description");
node_type = phone.getInt("node_type");
node_id = phone.getInt("node_id");
JSONObject comments = entry.getJSONObject("comments");
comments_count = comments.getString("count");
JSONObject like = entry.getJSONObject("likes");
like_count = like.getString("count");
readable_date = phone.getString("readable_date");
item = new FeedItem();
item.setId(node_id);
item.setName(name);
item.setStatus(description);
item.setReadable_date(readable_date);
item.setComments_count(comments_count);
item.setLike_count(like_count);
i++;
// Image might be null sometimes
String image = response.isNull("image") ? null : response
.getString("image");
// url might be null sometimes
String feedUrl = response.isNull("url") ? null : response
.getString("url");
/*item.setUrl(feedUrl);*/
item.setUrl(feedUrl);
feedItems.add(item);
}
// notify data changes to list adapater
listAdapter.notifyDataSetChanged();
}
catch (JSONException e)
{
e.printStackTrace();
}
}
/**
* Slide menu item click listener
* */
private class SlideMenuClickListener implements
ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id)
{ // display view for selected nav drawer item
//Log.d("Kanth", "Item Click Working");
Toast.makeText(MainActivity.this,navMenuTitles[position]+"was selected", Toast.LENGTH_LONG).show();
displayView(position);
}
}
/**
* Diplaying fragment view for selected nav drawer list item
* */
private void displayView(int position) {
// update the main content by replacing fragments
Fragment fragment = null;
switch (position)
{
case 0:
fragment = new HomeFragment();
Bundle data = new Bundle();
data.putInt("id", node_id);
data.putString("name", name);
data.putString("description", description);
data.putString("readable_date", readable_date);
data.putString("Comments_count", comments_count);
data.putString("Like_count", like_count);
fragment.setArguments(data);
Log.d("Kanth", "Item Click Working");
break;
case 1:
fragment = new FindPeopleFragment();
break;
case 2:
fragment = new PhotosFragment();
break;
case 3:
fragment = new CommunityFragment();
break;
case 4:
fragment = new PagesFragment();
break;
case 5:
fragment = new WhatsHotFragment();
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.mainContent, fragment).commit();
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
mDrawerList.setSelection(position);
setTitle(navMenuTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
}
else
{
// error in creating fragment
Log.e("MainActivity", "Error in creating fragment");
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
// toggle nav drawer on selecting action bar app icon/title
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle action bar actions click
switch (item.getItemId()) {
case R.id.action_settings:
return true;
default:
return super.onOptionsItemSelected(item);
}
}
/***
* Called when invalidateOptionsMenu() is triggered
*/
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
// if nav drawer is opened, hide the action items
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
@Override
public void setTitle(CharSequence title) {
mTitle = title;
getActionBar().setTitle(mTitle);
}
/**
* When using the ActionBarDrawerToggle, you must call it during
* onPostCreate() and onConfigurationChanged()...
*/
@Override
protected void onPostCreate(Bundle savedInstanceState)
{
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
drawer_list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="48dp"
android:clickable="false"
android:descendantFocusability="blocksDescendants"
android:focusable="false"
android:focusableInTouchMode="false"
>
<ImageView
android:id="@+id/icon"
android:layout_width="25dp"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginLeft="12dp"
android:layout_marginRight="12dp"
android:contentDescription="@string/desc_list_item_icon"
android:src="@drawable/ic_launcher"
android:layout_centerVertical="true"
android:clickable="false"
android:focusable="false"
android:focusableInTouchMode="false"/>
<TextView android:id="@+id/counter"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/counter_bg"
android:layout_alignParentRight="true"
android:layout_marginRight="8dp"
android:textColor="#000000"
android:layout_centerHorizontal="true"
android:clickable="false"
android:focusable="false"
android:focusableInTouchMode="false"/>
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_marginLeft="57dp"
android:layout_toRightOf="@+id/icon"
android:paddingRight="20dp"
android:paddingTop="5dp"
android:text="Hello"
android:layout_centerHorizontal="true"
android:textColor="#FFFFFF"
android:clickable="false"
android:focusable="false"
android:focusableInTouchMode="false"/>
</RelativeLayout>
activity_main.xml中
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawerLayout"
android:layout_height="match_parent"
android:layout_width="match_parent">
<FrameLayout
android:id="@+id/mainContent"
android:layout_height="match_parent"
android:layout_width="match_parent">
</FrameLayout>
<!-- navigation drawer -->
<ListView
android:id="@+id/drawerList"
android:layout_width="240dp"
android:layout_height="match_parent"
android:divider="@null"
android:descendantFocusability="beforeDescendants"
android:listSelector="#FFFFFF"
android:background="#3b5998"
android:layout_gravity="left" />"
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:listSelector="#000000"
android:divider="@null" />
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
图片
- http://s24.postimg.org/pqjmfcx5x/vaave_feed.jpg
推荐答案
另外的LinearLayout是隐藏的片段内容。片段是加载。您需要为加载内容的线性布局，如果你不需要ListView和删除多余的框架布局。
The other LinearLayout is hiding the Fragment content. The Fragment is being loaded. You need to either load the content in that Linear layout if you don't need the listview and remove the extra Frame layout.
这篇关于碎片不会从抽屉式导航加载点击监听器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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![http://s24.postimg.org/pqjmfcx5x/vaave_feed.jpg](\"http://s24.postimg.org/pqjmfcx5x/vaave_feed.jpg\"){kind=link}