Kann NavigationDrawer nicht mit Streichen von rechts nach links schließen

Question

Ich habe versucht, das Problem zu beheben, das ich habe, das ist, dass ich nicht in der Lage bin, den NavigationDrawer durch Streichen von rechts nach links ohne Erfolg zu schließen . Öffnen Sie es, indem Sie vom linken Bildschirmrand nach rechts wischen, so wie es sollte. Ich versuche gerade, das NavigationDrawer-Beispiel und das ViewPager-Beispiel von der developer.android.com-Website zusammenzuführen, und alles funktioniert, aber nicht das Schließen der Navigationsleiste. Ich hoffe, dass jemand von euch mir helfen will.

Hier ist mein Code:

package com.example.android.effectivenavigation; 

import android.app.ActionBar; 
import android.app.FragmentTransaction; 
import android.app.SearchManager; 
import android.content.Intent; 
import android.content.res.Configuration; 
import android.os.Bundle; 
import android.support.v4.app.ActionBarDrawerToggle; 
import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentActivity; 
import android.support.v4.app.FragmentManager; 
import android.support.v4.app.FragmentPagerAdapter; 
import android.support.v4.view.GravityCompat; 
import android.support.v4.view.ViewPager; 
import android.support.v4.widget.DrawerLayout; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.AdapterView; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 
import android.widget.TextView; 
import android.widget.Toast; 

public class MainActivity extends FragmentActivity /*implements ActionBar.TabListener*/ { 

    /** 
    * The {@link android.support.v4.view.PagerAdapter} that will provide fragments for each of the 
    * three primary sections of the app. We use a {@link android.support.v4.app.FragmentPagerAdapter} 
    * derivative, which will keep every loaded fragment in memory. If this becomes too memory 
    * intensive, it may be best to switch to a {@link android.support.v4.app.FragmentStatePagerAdapter}. 
    */ 
    AppSectionsPagerAdapter mAppSectionsPagerAdapter; 

    /** 
    * The {@link ViewPager} that will display the three primary sections of the app, one at a 
    * time. 
    */ 
    private DrawerLayout mDrawerLayout; 
    private ListView mDrawerList; 
    private ActionBarDrawerToggle mDrawerToggle; 

    private CharSequence mDrawerTitle; 
    private CharSequence mTitle; 
    private String[] mPlanetTitles; 

    ViewPager mViewPager; 

    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     mTitle = mDrawerTitle = getTitle(); 
     mPlanetTitles = getResources().getStringArray(R.array.planets_array); 
     mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); 
     mDrawerList = (ListView) findViewById(R.id.left_drawer); 

     // 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 
     mDrawerList.setAdapter(new ArrayAdapter<String>(this, 
       R.layout.drawer_list_item, mPlanetTitles)); 
     mDrawerList.setOnItemClickListener(new DrawerItemClickListener()); 
     // Create the adapter that will return a fragment for each of the three primary sections 
     // of the app. 
     mAppSectionsPagerAdapter = new AppSectionsPagerAdapter(getSupportFragmentManager()); 

     // Set up the action bar. 
     final ActionBar actionBar = getActionBar(); 

     // Specify that the Home/Up button should not be enabled, since there is no hierarchical 
     // parent. 
     actionBar.setDisplayHomeAsUpEnabled(true); 
     actionBar.setHomeButtonEnabled(true); 

    // ActionBarDrawerToggle ties together the the proper interactions 
     // between the sliding drawer and the action bar app icon 
     mDrawerToggle = new ActionBarDrawerToggle(
       this,     /* host Activity */ 
       mDrawerLayout,   /* DrawerLayout object */ 
       R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */ 
       R.string.drawer_open, /* "open drawer" description for accessibility */ 
       R.string.drawer_close /* "close drawer" description for accessibility */ 
       ) { 
      public void onDrawerClosed(View view) { 
       getActionBar().setTitle(mTitle); 
       invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu() 
       Log.v("MainActivity", "Closed!"); 
      } 

      public void onDrawerOpened(View drawerView) { 
       getActionBar().setTitle(mDrawerTitle); 
       invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu() 
       Log.v("MainActivity", "Opened!"); 
      } 
     }; 
     mDrawerLayout.setDrawerListener(mDrawerToggle); 

     mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED); 


     // Specify that we will be displaying tabs in the action bar. 
     actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD); 

     // Set up the ViewPager, attaching the adapter and setting up a listener for when the 
     // user swipes between sections. 
     mViewPager = (ViewPager) findViewById(R.id.pager); 
     mViewPager.setAdapter(mAppSectionsPagerAdapter); 
     mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() { 
      @Override 
      public void onPageSelected(int position) { 
       // When swiping between different app sections, select the corresponding tab. 
       // We can also use ActionBar.Tab#select() to do this if we have a reference to the 
       // Tab. 
       //actionBar.setSelectedNavigationItem(position); 
      } 
     }); 

     // For each of the sections in the app, add a tab to the action bar. 
     /*for (int i = 0; i < mAppSectionsPagerAdapter.getCount(); i++) { 
      // Create a tab with text corresponding to the page title defined by the adapter. 
      // Also specify this Activity object, which implements the TabListener interface, as the 
      // listener for when this tab is selected. 
      actionBar.addTab(
        actionBar.newTab() 
          .setText(mAppSectionsPagerAdapter.getPageTitle(i)) 
          .setTabListener(this)); 
     }*/ 
    } 

    @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); 
     mDrawerToggle.onConfigurationChanged(newConfig); 
    } 


    public CharSequence getPageTitle (int position) { 
     return "Hello"; 
    } 

    /* The click listner for ListView in the navigation drawer */ 
    private class DrawerItemClickListener implements ListView.OnItemClickListener { 
     @Override 
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 

     } 
    } 

    /*@Override 
    public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { 
    } 

    @Override 
    public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { 
     // When the given tab is selected, switch to the corresponding page in the ViewPager. 
     mViewPager.setCurrentItem(tab.getPosition()); 
    } 

    @Override 
    public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { 
    }*/ 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // The action bar home/up action should open or close the drawer. 
     // ActionBarDrawerToggle will take care of this. 
     if (mDrawerToggle.onOptionsItemSelected(item)) { 
      return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 

    /** 
    * A {@link FragmentPagerAdapter} that returns a fragment corresponding to one of the primary 
    * sections of the app. 
    */ 
    public static class AppSectionsPagerAdapter extends FragmentPagerAdapter { 

     public AppSectionsPagerAdapter(FragmentManager fm) { 
      super(fm); 
     } 

     @Override 
     public Fragment getItem(int i) { 
      switch (i) { 
       case 0: 
        // The first section of the app is the most interesting -- it offers 
        // a launchpad into the other demonstrations in this example application. 
        return new LaunchpadSectionFragment(); 

       default: 
        // The other sections of the app are dummy placeholders. 
        Fragment fragment = new DummySectionFragment(); 
        Bundle args = new Bundle(); 
        args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, i + 1); 
        fragment.setArguments(args); 
        return fragment; 
      } 
     } 

     @Override 
     public int getCount() { 
      return 3; 
     } 

     @Override 
     public CharSequence getPageTitle(int position) { 
      return "Section " + (position + 1); 
     } 
    } 

    /** 
    * A fragment that launches other parts of the demo application. 
    */ 
    public static class LaunchpadSectionFragment extends Fragment { 

     @Override 
     public View onCreateView(LayoutInflater inflater, ViewGroup container, 
       Bundle savedInstanceState) { 
      View rootView = inflater.inflate(R.layout.fragment_section_launchpad, container, false); 

      // Demonstration of a collection-browsing activity. 
      rootView.findViewById(R.id.demo_collection_button) 
        .setOnClickListener(new View.OnClickListener() { 
         @Override 
         public void onClick(View view) { 
          Intent intent = new Intent(getActivity(), CollectionDemoActivity.class); 
          startActivity(intent); 
         } 
        }); 

      // Demonstration of navigating to external activities. 
      rootView.findViewById(R.id.demo_external_activity) 
        .setOnClickListener(new View.OnClickListener() { 
         @Override 
         public void onClick(View view) { 
          // Create an intent that asks the user to pick a photo, but using 
          // FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET, ensures that relaunching 
          // the application from the device home screen does not return 
          // to the external activity. 
          Intent externalActivityIntent = new Intent(Intent.ACTION_PICK); 
          externalActivityIntent.setType("image/*"); 
          externalActivityIntent.addFlags(
            Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 
          startActivity(externalActivityIntent); 
         } 
        }); 

      return rootView; 
     } 
    } 

    /** 
    * A dummy fragment representing a section of the app, but that simply displays dummy text. 
    */ 
    public static class DummySectionFragment extends Fragment { 

     public static final String ARG_SECTION_NUMBER = "section_number"; 

     @Override 
     public View onCreateView(LayoutInflater inflater, ViewGroup container, 
       Bundle savedInstanceState) { 
      View rootView = inflater.inflate(R.layout.fragment_section_dummy, container, false); 
      Bundle args = getArguments(); 
      ((TextView) rootView.findViewById(android.R.id.text1)).setText(
        getString(R.string.dummy_section_text, args.getInt(ARG_SECTION_NUMBER))); 
      return rootView; 
     } 
    } 
} 

Und meine XML:

<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"> 
<!-- As the main content view, the view below consumes the entire 
    space available using match_parent in both dimensions. --> 
<FrameLayout 
    android:id="@+id/content_frame" 
    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. 
    The drawer is given a fixed width in dp and extends the full height of 
    the container. A solid background is used for contrast 
    with the content view. --> 
<ListView 
    android:id="@+id/left_drawer" 
    android:layout_width="240dp" 
    android:layout_height="match_parent" 
    android:layout_gravity="start" 
    android:choiceMode="singleChoice" 
    android:divider="@android:color/transparent" 
    android:dividerHeight="0dp" 
    android:background="#111"/> 

<android.support.v4.view.ViewPager 
android:id="@+id/pager" 
android:layout_width="match_parent" 
android:layout_height="match_parent" > 

<android.support.v4.view.PagerTitleStrip 
    android:id="@+id/pager_title_strip" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:layout_gravity="top" 
    android:background="#33b5e5" 
    android:textColor="#fff" 
    android:paddingTop="4dp" 
    android:paddingBottom="4dp" /> 


</android.support.v4.view.ViewPager> 

EDIT: Es stellte sich heraus, dass ich die NavigationDrawer schließen, aber nicht, wie es sein sollte. Um es zu schließen, muss ich von links nach rechts wischen und dann von rechts nach links wischen, ohne meinen Finger vom Bildschirm zu nehmen. Also muss ich die gleiche Geste machen wie das Öffnen der Schublade und dann sofort die abschließende Geste machen, aber so sollte es nicht sein.

Answer 1

Ich denke, die XML verursacht Ihr Problem. Das ListView (left_drawer) sollte das letzte Element in Ihrem XML sein, damit es Ihren Inhalt überlagern und Ihre Wischgeste erfassen kann.

Wenn Sie Ihre ViewPager innerhalb der FrameLayout setzen (deshalb heißt es content_frame), sollte es wie erwartet funktionieren.

Answer 2

Ja peitek ist richtig, um mehr Klarheit zu geben, das ist meine XML-Datei.

<fragment 
    android:id="@+id/single_map_view" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    class="com.google.android.gms.maps.SupportMapFragment"/> 

<include 
    layout="@layout/app_bar_map_view_tt" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:id="@+id/single_map_appbar"/> 

<!--This should be the last element to maintain right to left closing gesture.--> 
<android.support.design.widget.NavigationView 
    android:id="@+id/nav_view" 
    android:layout_width="wrap_content" 
    android:layout_height="match_parent" 
    android:layout_gravity="start" 
    android:fitsSystemWindows="true" 
    app:headerLayout="@layout/nav_header_map_view_tt" 
    app:menu="@menu/activity_map_view_tt_drawer" />