我为导航抽屉创建了可扩展列表视图。它正在工作，但当我从中选择任何项目然后它将关闭抽屉，但当它有一些子项目时，它也将关闭抽屉。
即。我有这样的抽屉
**Home**
**payment**
**delivery**
**order --> pending order --> complete order**
**exit**
当我选择Home然后它工作正常但是当我点击订单然后它将关闭抽屉..
我想要当我点击订单然后抽屉保持打开状态，当我选择子项目时它将关闭。
这里的完整代码如下： -
NavigationDrawerFragment.java
package omcommunication.omprivillege;
/**
* Created by sachin on 3/9/2017.
*/
import android.content.Intent;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.ActionBarActivity;
import android.app.Activity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.content.res.Configuration;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ExpandableListView;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.widget.ExpandableListView.OnGroupCollapseListener;
import android.widget.ExpandableListView.OnGroupExpandListener;
public class NavigationDrawerFragment extends Fragment {
private static final String STATE_SELECTED_POSITION = "selected_navigation_drawer_position";
private NavigationDrawerCallbacks mCallbacks;
private ActionBarDrawerToggle mDrawerToggle;
private DrawerLayout mDrawerLayout;
private ExpandableListView mDrawerListView;
private View mFragmentContainerView;
private int mCurrentSelectedPosition = 0;
ArrayList<String> groupItem = new ArrayList<String>();
ArrayList<Object> childItem = new ArrayList<Object>();
List<String> expandableListTitle;
HashMap<String, List<String>> expandableListDetail;
public NavigationDrawerFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@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 = (ExpandableListView) inflater.inflate(
R.layout.drawer_drawer, container, false);
mDrawerListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
});
expandableListDetail = ExpandableListDataPump.getData();
expandableListTitle = new ArrayList<String>(expandableListDetail.keySet());
mDrawerListView.setAdapter(new ExpandableListAdapter(getActivity(), expandableListTitle, expandableListDetail));
mDrawerListView.setOnGroupExpandListener(new OnGroupExpandListener() {
@Override
public void onGroupExpand(int groupPosition) {
}
});
mDrawerListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
boolean retVal = true;
if (groupPosition == ExpandableListAdapter.ITEM1) {
FragmentTransaction t = getFragmentManager().beginTransaction();
Homepage mFrag = new Homepage ();
t.replace(R.id.container, mFrag);
t.commit();
} else if (groupPosition == ExpandableListAdapter.ITEM2) {
FragmentTransaction t = getFragmentManager().beginTransaction();
Rorder mFrag = new Rorder();
t.replace(R.id.container, mFrag);
t.commit();
} else if (groupPosition == ExpandableListAdapter.ITEM3) {
FragmentTransaction t = getFragmentManager().beginTransaction();
Dispatchorder mFrag = new Dispatchorder();
t.replace(R.id.container, mFrag);
t.commit();
// retVal = false;
// call some activity here
} else if (groupPosition == ExpandableListAdapter.ITEM4) {
// call some activity here
retVal = false;
}else if (groupPosition == ExpandableListAdapter.ITEM5) {
// call some activity here
//retVal = false;
FragmentTransaction t = getFragmentManager().beginTransaction();
RecordDeliver mFrag = new RecordDeliver();
t.replace(R.id.container, mFrag);
t.commit();
}else if (groupPosition == ExpandableListAdapter.ITEM6) {
// call some activity here
//retVal = false;
FragmentTransaction t = getFragmentManager().beginTransaction();
OrderDelivery mFrag = new OrderDelivery();
t.replace(R.id.container, mFrag);
t.commit();
}else if (groupPosition == ExpandableListAdapter.ITEM7) {
// call some activity here
//retVal = false;
}else if (groupPosition == ExpandableListAdapter.ITEM8) {
// call some activity here
//retVal = false;
}else if (groupPosition == ExpandableListAdapter.ITEM9) {
// call some activity here
//retVal = false;
}
return retVal;
}
});
mDrawerListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
if (groupPosition == ExpandableListAdapter.ITEM1) {
if (childPosition == ExpandableListAdapter.SUBITEM1_1) {
Intent i = new Intent(getContext(), MainActivity.class);
startActivity(i);
}
else if (childPosition == ExpandableListAdapter.SUBITEM1_2) {
// call activity here
}
} else if (groupPosition == ExpandableListAdapter.ITEM2) {
if (childPosition == ExpandableListAdapter.SUBITEM2_1) {
// call activity here
}
else if (childPosition == ExpandableListAdapter.SUBITEM2_2) {
// call activity here
}
else if (childPosition == ExpandableListAdapter.SUBITEM2_3) {
// call activity here
}
else if (childPosition == ExpandableListAdapter.SUBITEM2_4) {
// call activity here
}
}
return true;
}
});
mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
View header= inflater.inflate(R.layout.drawer_header, null);
mDrawerListView.addHeaderView(header);
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.header, 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.string.drawer_open, /* "open drawer" description for accessibility */
R.string.drawer_close /* "close drawer" description for accessibility */
) {
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
getActionBar().setIcon(R.drawable.header);
if (!isAdded()) {
return;
}
getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
}
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
if (!isAdded()) {
return;
}
getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
}
};
// 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.menu_main, menu);
showGlobalContextActionBar();
}
*/ super.onCreateOptionsMenu(menu, inflater);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mDrawerToggle.onOptionsItemSelected(item)) {
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);
}
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);
}
}
我参考了许多教程，但没有找到我的问题..请帮助我解决这个问题。
答案 0 :(得分：0)
drawerLayout.closeDrawer(mFragmentContainerView);
return retVal;
关闭听众内部的抽屉。
答案 1 :(得分：0)
mDrawerLayout.closeDrawer（mDrawerListView）;
在您的组和子选择方法的末尾设置此行代码。