我有一个带有2个导航抽屉的活动：一个在左侧，“自定义”导航抽屉带有菜单列表，另一个在右侧带有一些搜索过滤器。此活动还包含一个列表片段，当我单击一个元素时，将打开一个新活动。
当我打开左侧抽屉时，我的活动被禁用，我无法点击片段的任何元素。
另一方面，当我打开右侧抽屉时，我仍然能够滚动并通过抽屉单击片段的元素。
在Main动作中，我只设置了抽屉。
在List片段中，我不处理抽屉。
NavigationDrawer是Android Studio自动生成的导航抽屉。
这是我的右侧抽屉：
package it.gn.sfa;
import android.app.ActionBar;
import android.app.Activity;
import android.app.Fragment;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
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.Spinner;
import android.widget.TextView;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import it.gn.sfa.adapter.MenuListAdapter;
import it.gn.sfa.db.SfaDbHelper;
import it.gn.sfa.db.datatype.MenuInput;
import it.gn.sfa.helper.PreferenceHelper;
import it.gn.sfa.service.GetMenuService;
import it.gn.sfa.utilities.Constants;
import it.gn.sfa.utilities.Utilities;
/**
* Fragment used for managing interactions for and presentation of a navigation drawer.
* See the <a href="https://developer.android.com/design/patterns/navigation-drawer.html#Interaction">
* design guidelines</a> for a complete explanation of the behaviors implemented here.
*/
public class FilterDrawerFragment 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 FilterDrawerCallbacks mCallbacks;
/**
* Helper component that ties the action bar to the navigation drawer.
*/
private ActionBarDrawerToggle mDrawerToggle;
private DrawerLayout mFilterDrawerLayout;
//private ListView mDrawerListView;
private View mDrawerListView;
private View mFragmentContainerView;
private int mCurrentSelectedPosition;
private boolean mFromSavedInstanceState;
private boolean mUserLearnedDrawer;
private SfaDbHelper sfaDb;
// Menu
private Intent getMenuIntent;
//private BroadcastReceiver getMenu;
private IntentFilter getMenuFilter;
private List<MenuInput> menuInput;
private MenuListAdapter mMenuAdapter;
private Menu _menu;
private Spinner remaindersSpinner;
private Spinner typeSpinner;
private TextView lastOrderFromText;
private TextView lastOrderToText;
private Spinner channelSpinner;
private String remainders;
private String type;
private String lastOrderFrom;
private String lastOrderTo;
private String channel;
// public void setSelection(int position) {mDrawerListView.setItemChecked(position,true); }
public FilterDrawerFragment() {
}
private void initDb() {
sfaDb = SfaDbHelper.getInstance(getActivity().getApplication());
if (!sfaDb.isOpen()) {
sfaDb.open();
}
sfaDb.pushCount();
}
private void initFragment() {
getMenuFilter = new IntentFilter();
getMenuFilter.addAction(Constants.MENU);
/*getMenu = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
//Log.i("Main", "GET MENU");
//initMenu();
mDrawerListView.setAdapter(mMenuAdapter);
mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
}
};
getActivity().registerReceiver(getMenu, getMenuFilter);*/
//mDrawerListView.setChoiceMode(1);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
// 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);
//TODO: controllare perché se ho come menu preferito IMPOSTAZIONI, mi carica impostazioni ma non mi permette di tornare indietro
//mCurrentSelectedPosition = Integer.parseInt(PreferenceHelper.getPreferredMenu(getActivity().getApplicationContext())) - 7;
if (savedInstanceState != null) {
mCurrentSelectedPosition = savedInstanceState.getInt(STATE_SELECTED_POSITION);
mFromSavedInstanceState = true;
}
initDb();
// 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 = inflater.inflate(R.layout.fragment_filter_drawer, container, false).getRootView();
return mDrawerListView;
}
public boolean isDrawerOpen() {
return mFilterDrawerLayout != null && mFilterDrawerLayout.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) {
initFragment();
if (getActivity().getIntent().getBooleanExtra("syncMenu", false)) {
getMenuIntent = new Intent(getActivity(), GetMenuService.class);
getMenuIntent.putExtra("username", PreferenceHelper.getUser(getActivity().getApplicationContext()));
getActivity().startService(getMenuIntent);
}
mFragmentContainerView = getActivity().findViewById(fragmentId);
mFilterDrawerLayout = drawerLayout;
// set a custom shadow that overlays the main content when the drawer opens
mFilterDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
// lock border swipe - !! use same layout as navDraw
mFilterDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, mFragmentContainerView);
// ActionBarDrawerToggle ties together the the proper interactions
// between the navigation drawer and the action bar app icon.
mDrawerToggle = new ActionBarDrawerToggle(
getActivity(), /* host Activity */
mFilterDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* 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 (drawerView.equals(mFragmentContainerView)) {
Utilities.inflateNewMenu(CustomerListFragment.menuResource, getActivity());
((Main) getActivity()).restoreActionBar();
}
if (!isAdded()) {
return;
}
}
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
if (drawerView.equals(mFragmentContainerView)) {
Utilities.inflateNewMenu(R.menu.customer_filter_menu, getActivity());
showGlobalContextActionBar();
}
if (!isAdded()) {
return;
}
//getActivity().invalidateOptionsMenu();
}
};
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mCallbacks = (FilterDrawerCallbacks) activity;
} catch (ClassCastException e) {
throw new ClassCastException("Activity must implement NavigationDrawerCallbacks.");
}
}
@Override
public void onDetach() {
//getActivity().unregisterReceiver(getMenu);
sfaDb.popCount();
sfaDb.close();
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 (mFilterDrawerLayout != null && isDrawerOpen()) {
showGlobalContextActionBar();
}
super.onCreateOptionsMenu(menu, inflater);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.filter_accept:
Map<String, String> filters = new HashMap<String, String>();
remaindersSpinner = (Spinner) mFilterDrawerLayout.findViewById(R.id.customer_filter_remainders);
typeSpinner = (Spinner) mFilterDrawerLayout.findViewById(R.id.customer_filter_type);
lastOrderFromText = (TextView) mFilterDrawerLayout.findViewById(R.id.customer_filter_last_order_from);
lastOrderToText = (TextView) mFilterDrawerLayout.findViewById(R.id.customer_filter_last_order_to);
channelSpinner = (Spinner) mFilterDrawerLayout.findViewById(R.id.customer_filter_channel);
remainders = remaindersSpinner.getSelectedItem().toString();
type = typeSpinner.getSelectedItem().toString();
lastOrderFrom = lastOrderFromText.getText().toString();
lastOrderTo = lastOrderToText.getText().toString();
channel = channelSpinner.getSelectedItem().toString();
filters.put("remainders", remainders);
filters.put("type", type);
filters.put("lastOrderFrom", lastOrderFrom);
filters.put("lastOrderTo", lastOrderTo);
filters.put("channel", channel);
//aggiunge alla callback i filtri inseriti
mCallbacks.onFilterDrawerCheckSelected(filters);
mFilterDrawerLayout.closeDrawers();
restoreCustomerListMenu();
break;
case android.R.id.home:
if(mFilterDrawerLayout.isDrawerOpen(mFragmentContainerView)){
mFilterDrawerLayout.closeDrawers();
emptyFiltersViews();
restoreCustomerListMenu();
}
break;
}
/*
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 getActivity().getActionBar();
}
/**
* Callbacks interface that all activities using this fragment must implement.
*/
public static interface FilterDrawerCallbacks {
/**
* Called when an item in the navigation drawer is selected.
*/
void onFilterDrawerCheckSelected(Map<String, String> filters);
}
private void restoreCustomerListMenu(){
ActionBar actionBar = getActivity().getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeButtonEnabled(true);
actionBar.setDisplayShowTitleEnabled(true);
((Main) getActivity()).restoreActionBar();
Utilities.inflateNewMenu(R.menu.customer_list_menu, getActivity());
((Main)getActivity()).setUpSearchBarOnMenu();
}
private void emptyFiltersViews(){
remaindersSpinner = (Spinner) mFilterDrawerLayout.findViewById(R.id.customer_filter_remainders);
typeSpinner = (Spinner) mFilterDrawerLayout.findViewById(R.id.customer_filter_type);
lastOrderFromText = (TextView) mFilterDrawerLayout.findViewById(R.id.customer_filter_last_order_from);
lastOrderToText = (TextView) mFilterDrawerLayout.findViewById(R.id.customer_filter_last_order_to);
channelSpinner = (Spinner) mFilterDrawerLayout.findViewById(R.id.customer_filter_channel);
remaindersSpinner.setSelection(0);
typeSpinner.setSelection(0);
channelSpinner.setSelection(0);
lastOrderFromText.setText("");
lastOrderToText.setText("");
}
}
它与左侧的NavigationDrawer非常相似，它们也使用相同的drawerLayout。
为什么左侧抽屉“禁用”活动而右侧没有？