我从这个站点获得了示例抽屉导航:
http://www.androidhive.info/2013/11/android-sliding-menu-using-navigation-drawer/
和这里的主要细节:
http://wptrafficanalyzer.in/blog/itemclick-handler-for-listfragment-in-android/
错误 LogCat oncreateview(inflac....) View
无法创建
我试过了
//the main activiry as Activity:
package in.wptrafficanalyzer.listfragmentitemclick;
import in.wptrafficanalyzer.listfragmentitemclick.adapter.NavDrawerListAdapter;
import in.wptrafficanalyzer.listfragmentitemclick.model.NavDrawerItem;
import java.util.ArrayList;
import in.wptrafficanalyzer.listfragmentitemclick.R;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.app.ListFragment;
import android.content.Intent;
import android.content.res.Configuration;
import android.content.res.TypedArray;
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.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
public class MainActivity extends Activity implements CountryListFragment.ListFragmentItemClickListener {
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;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
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 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);
}
/**
* Diplaying fragment view for selected nav drawer list item
* */
private void displayView(int position) {
// update the main content by replacing fragments
ListFragment fragment = null;
switch (position) {
case 0:
//fragment = new HomeFragment();
break;
case 1:
fragment = new CountryListFragment();
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.country_list_fragment, 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);
}
/** Called when the activity is first created. */
@Override
public void onListFragmentItemClick(int position) {
/** Getting the orientation ( Landscape or Portrait ) of the screen */
int orientation = getResources().getConfiguration().orientation;
/** Landscape Mode */
if(orientation == Configuration.ORIENTATION_LANDSCAPE ){
/** Getting the fragment manager for fragment related operations */
FragmentManager fragmentManager = getFragmentManager();
/** Getting the fragmenttransaction object, which can be used to add, remove or replace a fragment */
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
/** Getting the existing detailed fragment object, if it already exists.
* The fragment object is retrieved by its tag name
* */
Fragment prevFrag = fragmentManager.findFragmentByTag("in.wptrafficanalyzer.country.details");
/** Remove the existing detailed fragment object if it exists */
if(prevFrag!=null)
fragmentTransaction.remove(prevFrag);
/** Instantiating the fragment CountryDetailsFragment */
CountryDetailsFragment fragment = new CountryDetailsFragment();
/** Creating a bundle object to pass the data(the clicked item's position) from the activity to the fragment */
Bundle b = new Bundle();
/** Setting the data to the bundle object */
b.putInt("position", position);
/** Setting the bundle object to the fragment */
fragment.setArguments(b);
/** Adding the fragment to the fragment transaction */
fragmentTransaction.add(R.id.detail_fragment_container, fragment,"in.wptrafficanalyzer.country.details");
/** Adding this transaction to backstack */
fragmentTransaction.addToBackStack(null);
/** Making this transaction in effect */
fragmentTransaction.commit();
}else{ /** Portrait Mode or Square mode */
/** Creating an intent object to start the CountryDetailsActivity */
Intent intent = new Intent("in.wptrafficanalyzer.CountryDetailsActivity");
/** Setting data ( the clicked item's position ) to this intent */
intent.putExtra("position", position);
/** Starting the activity by passing the implicit intent */
startActivity(intent);
}
}
}
package in.wptrafficanalyzer.listfragmentitemclick;
import android.app.Activity;
import android.app.ListFragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class CountryListFragment extends ListFragment{
/** List of countries to be displayed in the ListFragment */
ListFragmentItemClickListener ifaceItemClickListener;
/** An interface for defining the callback method */
public interface ListFragmentItemClickListener {
/** This method will be invoked when an item in the ListFragment is clicked */
void onListFragmentItemClick(int position);
}
/** A callback function, executed when this fragment is attached to an activity */
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try{
/** This statement ensures that the hosting activity implements ListFragmentItemClickListener */
ifaceItemClickListener = (ListFragmentItemClickListener) activity;
}catch(Exception e){
Toast.makeText(activity.getBaseContext(), "Exception",Toast.LENGTH_SHORT).show();
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
/** Data source for the ListFragment */
ArrayAdapter<String> adapter = new ArrayAdapter<String>(inflater.getContext(), android.R.layout.simple_list_item_1, Country.name);
/** Setting the data source to the ListFragment */
setListAdapter(adapter);
return super.onCreateView(inflater, container, savedInstanceState);
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
/** Invokes the implementation of the method istFragmentItemClick in the hosting activity */
ifaceItemClickListener.onListFragmentItemClick(position);
}
}
><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/country_list_fragment"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:name="in.wptrafficanalyzer.listfragmentitemclick.CountryListFragment"
/>
<!-- Listview to display slider menu -->
<ListView
android:id="@+id/list_slidermenu"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="@color/list_divider"
android:dividerHeight="1dp"
android:listSelector="@drawable/list_selector"
android:background="@color/list_background"/>
> </android.support.v4.widget.DrawerLayout>
><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/country_list_fragment"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:name="in.wptrafficanalyzer.listfragmentitemclick.CountryListFragment"
/>
<FrameLayout
android:id="@+id/detail_fragment_container"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center"
/>
<!-- Listview to display slider menu -->
<ListView
android:id="@+id/list_slidermenu"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="@color/list_divider"
android:dividerHeight="1dp"
android:listSelector="@drawable/list_selector"
android:background="@color/list_background"/>
></android.support.v4.widget.DrawerLayout>
最佳答案
我也被这个弄糊涂了。我设置了抽屉导航以在我的应用程序的主要部分之间导航。然后,我希望将这些主要部分之一设置为 Master/Detail。我知道这是可能的,因为这基本上就是 Gmail 的样子,但是很难将我已经构建的内容与 Eclipse 在生成主/详细 Activity 时吐出的内容放在一起。
我不能只从 MainActivity(抽屉导航)启动 ItemListFragment(Master/Detail),因为 ItemListFragment 想要附加到 ItemListActivity,而不是 MainActivity,并且一个 fragment 不能有两个 Activity 。
我终于找到了一个关于它的教程,它实际上将两种设计思想结合在一起:
http://blog.evizija.si/android-layout/
我只是按照他们的例子,在大约 5 分钟内让我的 UI 按要求工作。它实际上非常简单。您使 MasterActivity 看起来更像生成的 ItemListActivity(即实现 TaskListFragment.Callbacks,复制 onItemSelected 方法,以及 onCreate 的卡盘),您就完成了!
我希望这有助于解决您的问题!快乐编码!
更新 :根据对改进我的答案的评论中的反馈,详细说明所涉及的步骤(来自链接的信息)。
(1) 制作您的抽屉 Activity 和 fragment ,我们将它们称为 MainActivity 和一些我们在这里不关心的 fragment 。就我个人而言,我会创建一个空的 Fragment,例如 ItemFragment,作为主/详细信息的占位符,同时让抽屉启动并运行。然后一旦抽屉按需要工作,处理主/细节并链接它们。
(2) 使用IDE 向导(我正在运行Eclipse)来制作主/从流的 Activity 和 fragment 。我将使用它们的默认名称来引用它们:ItemListActivity、ItemListFragment、ItemDetailActivity、ItemDetailFragment。
(3) 如果您以前使用过 Master/Detail,那么您知道您的大部分逻辑都进入了 fragment 。将 Master/Detail 与 Drawer 结合使用时仍然如此。注意,此时我们的 MainActivity 和我们的 Master/Detail 流之间没有连接,后者甚至可能无法在 UI 中访问。
(4) 关键概念:要将 Drawer 与 List 连接起来,我们的 MainActivity 将成为 ItemListFragment 的宿主 Activity(而不是当前的 ItemListActivity)。为了完成这项工作,我们只需将向导创建的一些 Master/Detail 魔术从 ItemListActivity 复制到 MainActivity。
(5) 具体:
(5A) MainActivity 实现 ItemListFragment.Callbacks(或 EmployeeListFragment.Callbacks、AlbumListFragment.Callbacks,无论您列出什么)并实现 onItemSelected 方法
public class MainActivity extends Activity
implements OnItemClickListener, ItemListFragment.Callbacks {
if (findViewById(R.id.item_detail_container) != null) {
// The detail container view will be present only in the
// large-screen layouts (res/values-large and
// res/values-sw600dp). If this view is present, then the
// activity should be in two-pane mode.
mTwoPane = true;
// In two-pane mode, list items should be given the
// 'activated' state when touched.
((ItemListFragment) getFragmentManager()
.findFragmentById(R.id.item_list))
.setActivateOnItemClick(true);
}
if (mTwoPane) {
// In two-pane mode, show the detail view in this activity by
// adding or replacing the detail fragment using a
// fragment transaction.
Bundle arguments = new Bundle();
arguments.putString(ItemDetailFragment.ARG_ITEM_ID, id);
ItemDetailFragment fragment = new ItemDetailFragment();
fragment.setArguments(arguments);
getFragmentManager().beginTransaction()
.replace(R.id.item_detail_container, fragment)
.commit();
} else {
// In single-pane mode, simply start the detail activity
// for the selected item ID.
Intent detailIntent = new Intent(this, ItemDetailActivity.class);
detailIntent.putExtra(ItemDetailFragment.ARG_ITEM_ID, id);
startActivity(detailIntent);
}
关于android - 如何使用 fragment 主细节实现抽屉导航,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/21036841/
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