我正在尝试使用主细节片段实现Slidingmenu
有可能是FrameLayout，包含两个主细节片段吗？请帮忙。
logcat的：
01-16 18:17:23.815: E/AndroidRuntime(11617): FATAL EXCEPTION: main
01-16 18:17:23.815: E/AndroidRuntime(11617): android.view.InflateException: Binary XML file line #23: Error inflating class fragment
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
01-16 18:17:23.815: E/AndroidRuntime(11617): at com.example.android.fragments.ListArticlActivity.onCreateView(ListArticlActivity.java:39)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:829)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1035)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.app.BackStackRecord.run(BackStackRecord.java:635)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1397)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.app.FragmentManagerImpl$1.run(FragmentManager.java:426)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.os.Handler.handleCallback(Handler.java:615)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.os.Handler.dispatchMessage(Handler.java:92)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.os.Looper.loop(Looper.java:137)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.app.ActivityThread.main(ActivityThread.java:4745)
01-16 18:17:23.815: E/AndroidRuntime(11617): at java.lang.reflect.Method.invokeNative(Native Method)
01-16 18:17:23.815: E/AndroidRuntime(11617): at java.lang.reflect.Method.invoke(Method.java:511)
01-16 18:17:23.815: E/AndroidRuntime(11617): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
01-16 18:17:23.815: E/AndroidRuntime(11617): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
01-16 18:17:23.815: E/AndroidRuntime(11617): at dalvik.system.NativeStart.main(Native Method)
01-16 18:17:23.815: E/AndroidRuntime(11617): Caused by: java.lang.NullPointerException: name == null
01-16 18:17:23.815: E/AndroidRuntime(11617): at java.lang.VMClassLoader.findLoadedClass(Native Method)
01-16 18:17:23.815: E/AndroidRuntime(11617): at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:354)
01-16 18:17:23.815: E/AndroidRuntime(11617): at java.lang.ClassLoader.loadClass(ClassLoader.java:491)
01-16 18:17:23.815: E/AndroidRuntime(11617): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.app.Fragment.instantiate(Fragment.java:574)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.app.Fragment.instantiate(Fragment.java:552)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.app.Activity.onCreateView(Activity.java:4656)
01-16 18:17:23.815: E/AndroidRuntime(11617): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)
01-16 18:17:23.815: E/AndroidRuntime(11617): ... 18 more
布局主要细节
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent" android:baselineAligned="false">
<fragment
android:id="@+id/headlines_fragment"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent" />
<fragment
android:id="@+id/article_fragment"
android:layout_weight="2"
android:layout_width="0dp"
android:layout_height="match_parent" />
</LinearLayout>
显示主要细节的片段
package com.example.android.fragments;
import android.os.Bundle;
import android.app.Fragment;
import android.app.Activity;
import android.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class ListArticlActivity extends Fragment
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(false);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.news_articles, container, false);
// Check whether the activity is using the layout version with
// the fragment_container FrameLayout. If so, we must add the first fragment
if (getView().findViewById(R.id.fragment_container) != null) {
// However, if we're being restored from a previous state,
// then we don't need to do anything and should return or else
// we could end up with overlapping fragments.
// Create an instance of ExampleFragment
HeadlinesFragment firstFragment = new HeadlinesFragment();
// In case this activity was started with special instructions from an Intent,
// pass the Intent's extras to the fragment as arguments
firstFragment.setArguments(getActivity().getIntent().getExtras());
FragmentTransaction fm = getFragmentManager().beginTransaction();
// Add the fragment to the 'fragment_container' FrameLayout
fm.add(R.id.fragment_container, firstFragment);
fm.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
fm.commit();
}
return view;
}
}
MainActivity
package com.example.android.fragments;
import java.util.ArrayList;
import com.example.android.fragments.R;
import com.example.android.fragments.adapter.NavDrawerListAdapter;
import com.example.android.fragments.model.NavDrawerItem;
import android.app.ActionBar;
import android.app.Activity;
import android.app.Fragment;
import android.app.SearchManager;
import android.content.Context;
import android.content.Intent;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SearchView;
public class MainActivity extends Activity {
// action bar
private ActionBar actionBar;
// Refresh menu item
private MenuItem refreshMenuItem;
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
// nav drawer title
private CharSequence mDrawerTitle;
// used to store app title
private CharSequence mTitle;
// slide menu items
private String[] navMenuTitles;
private TypedArray navMenuIcons;
private ArrayList<NavDrawerItem> navDrawerItems;
private NavDrawerListAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
actionBar = getActionBar();
//actionBar.hide();
mTitle = mDrawerTitle = getTitle();
// load slide menu items
navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);
// nav drawer icons from resources
navMenuIcons = getResources()
.obtainTypedArray(R.array.nav_drawer_icons);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.list_slidermenu);
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();
mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
// setting the nav drawer list adapter
adapter = new NavDrawerListAdapter(getApplicationContext(),
navDrawerItems);
mDrawerList.setAdapter(adapter);
// enabling action bar app icon and behaving it as toggle button
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.ic_drawer, //nav menu toggle icon
R.string.app_name, // nav drawer open - description for accessibility
R.string.app_name // 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);
}
}
/**
* 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
displayView(position);
}
}
@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;
case R.id.action_search:
// search action
return true;
case R.id.action_location_found:
// location found
//LocationFound();
return true;
case R.id.action_refresh:
// refresh
refreshMenuItem = item;
// load the data from server
new SyncData().execute();
return true;
case R.id.action_help:
// help action
return true;
case R.id.action_check_updates:
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private class SyncData extends AsyncTask<String, Void, String> {
@Override
protected void onPreExecute() {
// set the progress bar view
refreshMenuItem.setActionView(R.layout.action_progressbar);
refreshMenuItem.expandActionView();
}
@Override
protected String doInBackground(String... params) {
// not making real request in this demo
// for now we use a timer to wait for sometime
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String result) {
refreshMenuItem.collapseActionView();
// remove the progress bar view
refreshMenuItem.setActionView(null);
}
};
/***
* 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);
}
/**
* 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();
//getFragmentManager().beginTransaction().replace(R.id.content_frame, new ListArticlActivity()).commit();
break;
case 1:
fragment = new ListArticlActivity();
//actionBar.show();
break;
case 2:
// fragment = new myfragment();
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();
getFragmentManager().beginTransaction()
.replace(R.id.frame_container, 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 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);
}
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main, menu);
// Associate searchable configuration with the SearchView
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView = (SearchView) menu.findItem(R.id.action_search)
.getActionView();
searchView.setSearchableInfo(searchManager
.getSearchableInfo(getComponentName()));
return super.onCreateOptionsMenu(menu);
}
}
持有人主要布局
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ListView
android:id="@+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="@color/purple_dark"
android:choiceMode="singleChoice"
android:divider="@android:color/darker_gray"
android:dividerHeight="0.1dp"
android:listSelector="@drawable/navdrawer_listselector"/>
</android.support.v4.widget.DrawerLayout>