Android can'；t在列表视图中单击后关闭导航抽屉
在我尝试添加抽屉切换之前，一切都很正常。我只想在单击列表中的某个项目时关闭导航抽屉：所有内容都是使用android studio模板生成的 主要活动Android can'；t在列表视图中单击后关闭导航抽屉,android,navigation-drawer,Android,Navigation Drawer,在我尝试添加抽屉切换之前，一切都很正常。我只想在单击列表中的某个项目时关闭导航抽屉：所有内容都是使用android studio模板生成的 主要活动 public class Nav extends ActionBarActivity implements NavigationDrawerFragment.NavigationDrawerCallbacks { DrawerLayout drawerLayout; ActionBarDrawerToggle dra
public class Nav extends ActionBarActivity
implements NavigationDrawerFragment.NavigationDrawerCallbacks {
DrawerLayout drawerLayout;
ActionBarDrawerToggle drawerToggle;
/**
* Fragment managing the behaviors, interactions and presentation of the navigation drawer.
*/
private NavigationDrawerFragment mNavigationDrawerFragment;
/**
* Used to store the last screen title. For use in {@link #restoreActionBar()}.
*/
private CharSequence mTitle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_nav);
//mNavigationDrawerFragment = (NavigationDrawerFragment)
// getSupportFragmentManager().findFragmentById(R.id.navigation_drawer);
mTitle = getTitle();
//mNavigationDrawerFragment.setUp(
// R.id.navigation_drawer,
// (DrawerLayout) findViewById(R.id.drawer_layout));
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.app_name, R.string.app_name) {};
drawerLayout.setDrawerListener(drawerToggle);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
}
@Override
public void onNavigationDrawerItemSelected(int position) {
Fragment obj= null;
ListFragment listfragment = null;
switch (position) {
case 0:
listfragment= new F1_fr();
break;
case 1:
obj= new F6_fr();
break;
case 2:
obj= new F3_fr();
break;
case 3:
obj= new F4_fr();
break;
case 4:
obj= new F5_fr();
break;
}
if (obj != null) {
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.container, obj)
.commit();
}
else if (listfragment != null) {
// do stuff if its a listfragment
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.container, listfragment)
.commit();
}
}
public void onSectionAttached(int number) {
switch (number) {
case 1:
mTitle = getString(R.string.title_section1);
break;
case 2:
mTitle = getString(R.string.title_section2);
break;
case 3:
mTitle = getString(R.string.title_section3);
break;
case 4:
mTitle = getString(R.string.title_section4);
break;
case 5:
mTitle = getString(R.string.title_section5);
break;
case 6:
mTitle = getString(R.string.title_section6);
break;
}
}
public void restoreActionBar() {
ActionBar actionBar = getSupportActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setTitle(mTitle);
}
/*@Override
public boolean onCreateOptionsMenu(Menu menu) {
if (!mNavigationDrawerFragment.isDrawerOpen()) {
// Only show items in the action bar relevant to this screen
// if the drawer is not showing. Otherwise, let the drawer
// decide what to show in the action bar.
getMenuInflater().inflate(R.menu.nav, menu);
restoreActionBar();
return true;
}
return super.onCreateOptionsMenu(menu);
}*/
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
if (drawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_nav, container, false);
return rootView;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
((Nav) activity).onSectionAttached(
getArguments().getInt(ARG_SECTION_NUMBER));
}
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
drawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
drawerToggle.onConfigurationChanged(newConfig);
}
}
<!-- A DrawerLayout is intended to be used as the top-level content view using match_parent for both width and height to consume the full space available. -->
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:id="@+id/drawer_layout"
android:layout_width="match_parent" android:layout_height="match_parent"
tools:context="com.example.gweltaz.coffy3.Nav">
<!-- As the main content view, the view below consumes the entire
space available using match_parent in both dimensions. -->
<FrameLayout android:id="@+id/container" android:layout_width="match_parent"
android:layout_height="match_parent" />
<!-- android:layout_gravity="start" tells DrawerLayout to treat
this as a sliding drawer on the left side for left-to-right
languages and on the right side for right-to-left languages.
If you're not building against API 17 or higher, use
android:layout_gravity="left" instead. -->
<!-- The drawer is given a fixed width in dp and extends the full height of
the container. -->
<fragment android:id="@+id/navigation_drawer"
android:layout_width="@dimen/navigation_drawer_width" android:layout_height="match_parent"
android:layout_gravity="start"
android:name="com.example.gweltaz.coffy3.NavigationDrawerFragment"
tools:layout="@layout/fragment_navigation_drawer" />
</android.support.v4.widget.DrawerLayout>
public class NavigationDrawerFragment extends Fragment {
/**
* Remember the position of the selected item.
*/
private static final String STATE_SELECTED_POSITION = "selected_navigation_drawer_position";
/**
* Per the design guidelines, you should show the drawer on launch until the user manually
* expands it. This shared preference tracks this.
*/
private static final String PREF_USER_LEARNED_DRAWER = "navigation_drawer_learned";
/**
* A pointer to the current callbacks instance (the Activity).
*/
private NavigationDrawerCallbacks mCallbacks;
/**
* Helper component that ties the action bar to the navigation drawer.
*/
private ActionBarDrawerToggle mDrawerToggle;
private DrawerLayout mDrawerLayout;
private ListView mDrawerListView;
private View mFragmentContainerView;
private int mCurrentSelectedPosition = 0;
private boolean mFromSavedInstanceState;
private boolean mUserLearnedDrawer;
public NavigationDrawerFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Read in the flag indicating whether or not the user has demonstrated awareness of the
// drawer. See PREF_USER_LEARNED_DRAWER for details.
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, false);
if (savedInstanceState != null) {
mCurrentSelectedPosition = savedInstanceState.getInt(STATE_SELECTED_POSITION);
mFromSavedInstanceState = true;
}
// Select either the default item (0) or the last selected item.
selectItem(mCurrentSelectedPosition);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// Indicate that this fragment would like to influence the set of actions in the action bar.
setHasOptionsMenu(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
mDrawerListView = (ListView) inflater.inflate(
R.layout.fragment_navigation_drawer, container, false);
mDrawerListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
});
mDrawerListView.setAdapter(new ArrayAdapter<String>(
getActionBar().getThemedContext(),
android.R.layout.simple_list_item_activated_1,
android.R.id.text1,
new String[]{
getString(R.string.title_section1),
getString(R.string.title_section2),
getString(R.string.title_section3),
getString(R.string.title_section4),
getString(R.string.title_section5),
}));
mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
return mDrawerListView;
}
public boolean isDrawerOpen() {
return mDrawerLayout != null && mDrawerLayout.isDrawerOpen(mFragmentContainerView);
}
/**
* Users of this fragment must call this method to set up the navigation drawer interactions.
*
* @param fragmentId The android:id of this fragment in its activity's layout.
* @param drawerLayout The DrawerLayout containing this fragment's UI.
*/
public void setUp(int fragmentId, DrawerLayout drawerLayout) {
mFragmentContainerView = getActivity().findViewById(fragmentId);
mDrawerLayout = drawerLayout;
// set a custom shadow that overlays the main content when the drawer opens
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
// set up the drawer's list view with items and click listener
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeButtonEnabled(true);
// ActionBarDrawerToggle ties together the the proper interactions
// between the navigation drawer and the action bar app icon.
mDrawerToggle = new ActionBarDrawerToggle(
getActivity(), /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.whiteindic2, /* nav drawer image to replace 'Up' caret */
R.string.navigation_drawer_open, /* "open drawer" description for accessibility */
R.string.navigation_drawer_close /* "close drawer" description for accessibility */
) {
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
if (!isAdded()) {
return;
}
getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
}
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
if (!isAdded()) {
return;
}
if (!mUserLearnedDrawer) {
// The user manually opened the drawer; store this flag to prevent auto-showing
// the navigation drawer automatically in the future.
mUserLearnedDrawer = true;
SharedPreferences sp = PreferenceManager
.getDefaultSharedPreferences(getActivity());
sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true).apply();
}
getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
}
};
// If the user hasn't 'learned' about the drawer, open it to introduce them to the drawer,
// per the navigation drawer design guidelines.
if (!mUserLearnedDrawer && !mFromSavedInstanceState) {
mDrawerLayout.openDrawer(mFragmentContainerView);
}
// Defer code dependent on restoration of previous instance state.
mDrawerLayout.post(new Runnable() {
@Override
public void run() {
mDrawerToggle.syncState();
}
});
mDrawerLayout.setDrawerListener(mDrawerToggle);
}
private void selectItem(int position) {
mCurrentSelectedPosition = position;
if (mDrawerListView != null) {
mDrawerListView.setItemChecked(position, true);
}
if (mDrawerLayout != null) {
mDrawerLayout.closeDrawer(mFragmentContainerView);
}
if (mCallbacks != null) {
mCallbacks.onNavigationDrawerItemSelected(position);
}
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mCallbacks = (NavigationDrawerCallbacks) activity;
} catch (ClassCastException e) {
throw new ClassCastException("Activity must implement NavigationDrawerCallbacks.");
}
}
@Override
public void onDetach() {
super.onDetach();
mCallbacks = null;
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt(STATE_SELECTED_POSITION, mCurrentSelectedPosition);
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Forward the new configuration the drawer toggle component.
mDrawerToggle.onConfigurationChanged(newConfig);
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// If the drawer is open, show the global app actions in the action bar. See also
// showGlobalContextActionBar, which controls the top-left area of the action bar.
if (mDrawerLayout != null && isDrawerOpen()) {
inflater.inflate(R.menu.global, menu);
showGlobalContextActionBar();
}
super.onCreateOptionsMenu(menu, inflater);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
if (item.getItemId() == R.id.action_example) {
Toast.makeText(getActivity(), "Example action.", Toast.LENGTH_SHORT).show();
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* Per the navigation drawer design guidelines, updates the action bar to show the global app
* 'context', rather than just what's in the current screen.
*/
private void showGlobalContextActionBar() {
ActionBar actionBar = getActionBar();
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setTitle(R.string.app_name);
}
private ActionBar getActionBar() {
return ((ActionBarActivity) getActivity()).getSupportActionBar();
}
/**
* Callbacks interface that all activities using this fragment must implement.
*/
public static interface NavigationDrawerCallbacks {
/**
* Called when an item in the navigation drawer is selected.
*/
void onNavigationDrawerItemSelected(int position);
}
}
公共类NavigationDrawerFragment扩展片段{
/**
*记住所选项目的位置。
*/
私有静态最终字符串状态\u SELECTED\u POSITION=“SELECTED\u navigation\u drawer\u POSITION”；
/**
*根据设计指南，您应该在启动时显示抽屉，直到用户手动启动
*展开它。此共享首选项将跟踪它。
*/
私有静态最终字符串PREF\u USER\u LEARNED\u DRAWER=“导航\u DRAWER\u LEARNED”；
/**
*指向当前回调实例（活动）的指针。
*/
专用导航抽屉回调mCallbacks；
/**
*将操作栏绑定到导航抽屉的帮助器组件。
*/
私有操作bardrawertoggle mDrawerToggle；
私人抽屉布局mDrawerLayout；
私有列表视图mDrawerListView；
私有视图MFFragmentContainerView；
private int mCurrentSelectedPosition=0；
私有布尔值mFromSavedInstanceState；
私有布尔mUserLearnedDrawer；
公共导航抽屉碎片（）{
}
@凌驾
创建时的公共void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
//读入标志，指示用户是否已意识到
//抽屉。有关详细信息，请参阅首选用户抽屉。
SharedReferences sp=PreferenceManager.GetDefaultSharedReferences（getActivity（））；
mUserLearnedDrawer=sp.getBoolean（预用户已学习抽屉，false）；
如果（savedInstanceState！=null）{
mCurrentSelectedPosition=savedInstanceState.getInt（STATE\u SELECTED\u POSITION）；
mFromSavedInstanceState=true；
}
//选择默认项（0）或最后选定的项。
selectItem（mCurrentSelectedPosition）；
}
@凌驾
已创建ActivityState上的公共无效（Bundle savedInstanceState）{
super.onActivityCreated（savedInstanceState）；
//指示此片段希望影响操作栏中的操作集。
设置选项菜单（真）；
}
@凌驾
创建视图上的公共视图（布局、充气机、视图组容器、，
Bundle savedInstanceState）{
mDrawerListView=（ListView）充气器。充气(
R.layout.fragment_导航_抽屉、容器、假）；
mDrawerListView.setOnItemClickListener（新的AdapterView.OnItemClickListener（）{
@凌驾
public void onItemClick（AdapterView父对象、视图、整型位置、长id）{
选择项目（位置）；
}
});
mDrawerListView.setAdapter（新阵列适配器）(
getActionBar（）.getThemedContext（），
android.R.layout.simple\u list\u item\u activated\u 1，
android.R.id.text1，
新字符串[]{
getString（R.string.title_第1节），
getString（R.string.title_第2节），
getString（R.string.title_第3节），
getString（R.string.title_第4节），
getString（R.string.title_第5节），
}));
mDrawerListView.setItemChecked（mCurrentSelectedPosition，true）；
返回mDrawerListView；
}
公共布尔值isDrawerOpen（）{
返回mDrawerLayout！=null&&mDrawerLayout.isDrawerOpen（MFFragmentContainerView）；
}
/**
*此片段的用户必须调用此方法来设置导航抽屉交互。
*
*@param fragmentId此片段在其活动布局中的android:id。
*@param drawerLayout包含此片段UI的drawerLayout。
*/
公共空白设置（int fragmentId、抽屉布局抽屉布局）{
MFFragmentContainerView=getActivity（）.findViewById（fragmentId）；
mDrawerLayout=抽屉式布局；
//设置抽屉打开时覆盖主要内容的自定义阴影
mDrawerLayout.setDrawerShadow（R.drawable.drawer\u shadow，GravityCompat.START）；
//使用项目设置抽屉的列表视图，然后单击listener
ActionBar ActionBar=getActionBar（）；
actionBar.setDisplayHomeAsUpEnabled（true）；
actionBar.setHomeButtonEnabled（真）；
//ActionBarDrawerToggle将适当的交互连接在一起
//在导航抽屉和操作栏应用程序图标之间。
mDrawerToggle=新操作bardrawertoggle(
getActivity（），/*主机活动*/
mDrawerLayout，/*抽屉布局对象*/
R.drawable.whiteindic2，/*导航抽屉图像替换“Up”插入符号*/
R.string.navigation\u drawer\u open，/*“open drawer”描述用于辅助功能*/
R.string.navigation\u drawer\u close/*“close drawer”可访问性说明*/
) {
@凌驾
图纸上的公共空白已关闭（视图抽屉视图）{
super.onDrawerClosed（抽屉视图）；
如果（！isAdded（））{
返回；
}
getActivity（）.SupportInvalidateOptions菜单（）；//调用PrepareOptions菜单（）
}
@凌驾
打开图纸上的公共空白（视图抽屉视图）{
super.onDrawerOpened（抽屉视图）；
如果（！isAdded（））{
返回；
}
如果（！mUserLearnedDrawer）{
//用户手动打开抽屉；存储此标志以防止自动显示
//自动导航抽屉
//mNavigationDrawerFragment = (NavigationDrawerFragment)
// getSupportFragmentManager().findFragmentById(R.id.navigation_drawer);
//mNavigationDrawerFragment.setUp(
// R.id.navigation_drawer,
// (DrawerLayout) findViewById(R.id.drawer_layout));