Android 导航抽屉项目未注册点击事件

Navigation drawer Items not registering click event

提问by J4C3N-14

I am struggling to get the Navigation drawer items to register and start and intent for a new activity. The drawer opens fine and is displayed correctly but nothing happens when I click on the items in the list. Here is my code that is taken from the google tutorials.

我正在努力让导航抽屉项目注册并开始和意图进行新的活动。抽屉打开正常并且显示正确，但是当我单击列表中的项目时没有任何反应。这是我从谷歌教程中获取的代码。

mTitle = mDrawerTitle = getTitle();
           mTitles = getResources().getStringArray(R.array.menu_items);
           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, mTitles));
           mDrawerList.setOnItemClickListener(new DrawerItemClickListener());

           // enable ActionBar app icon to behave as action to toggle nav drawer
           getActionBar().setDisplayHomeAsUpEnabled(true);
           getActionBar().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()
               }

               public void onDrawerOpened(View drawerView) {
                   getActionBar().setTitle(mDrawerTitle);
                   invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
               }
           };
           mDrawerLayout.setDrawerListener(mDrawerToggle);

          // if (savedInstanceState == null) {
               selectItem(0);
           }


       @Override
       public boolean onCreateOptionsMenu(Menu menu) {
           MenuInflater inflater = getMenuInflater();
           inflater.inflate(R.menu.main, menu);
           return super.onCreateOptionsMenu(menu);
       }

       /* Called whenever we call invalidateOptionsMenu() */
       @Override
       public boolean onPrepareOptionsMenu(Menu menu) {
           // If the nav drawer is open, hide action items related to the content view
           boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
         //  menu.findItem(R.id.action_websearch).setVisible(!drawerOpen);
           return super.onPrepareOptionsMenu(menu);
       }

       @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);       
           }


       /* 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) {
               selectItem(position);
           }
       }

       private void selectItem(int position) {
           switch (position) {
           case 1:
               new DataTask(MainActivity.this).execute();   
               MainActivity.this.finish();//Set this Activity to Finish so no loop back       
               Intent intent=new Intent(MainActivity.this,SplashScreen.class);
               startActivity(intent);
               break;
           case 2:
              // ft.replace(R.id.content_frame, new SecondFragment());
            //  setTitle("Second");
               break;
           case 3:
              // ft.replace(R.id.content_frame, new ThirdFragment());
            //   setTitle("Third");
               break;

           default:
               break;
           }
           // update selected item and title, then close the drawer
           mDrawerList.setItemChecked(position, true);
           //setTitle(mTitles[position]);
           mDrawerLayout.closeDrawer(mDrawerList);
       }

       @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);
       }

       /**
        * Fragment that appears in the "content_frame", shows a planet
        */
       public static class PlanetFragment extends Fragment {
           public static final String ARG_PLANET_NUMBER = "planet_number";

           public PlanetFragment() {
               // Empty constructor required for fragment subclasses
           }

         //  @Override
        /*   public View onCreateView(LayoutInflater inflater, ViewGroup container,
                   Bundle savedInstanceState) {
               View rootView = inflater.inflate(R.layout.fragment_planet, container, false);
               int i = getArguments().getInt(ARG_PLANET_NUMBER);
               String planet = getResources().getStringArray(R.array.planets_array)[i];

               int imageId = getResources().getIdentifier(planet.toLowerCase(Locale.getDefault()),
                               "drawable", getActivity().getPackageName());
               ((ImageView) rootView.findViewById(R.id.image)).setImageResource(imageId);
               getActivity().setTitle(planet);
               return rootView;                      */
           }

If you can provide any help that would be great as I am really pulling my hair out on this. Thank you.

如果您能提供任何帮助，那将是很棒的，因为我真的很想解决这个问题。谢谢你。

回答by user3798518

The problem is the z ordering. When you expand the list in onDrawerOpenedput:

问题是 z 排序。当您在onDrawerOpenedput 中展开列表时：

mDrawerList.bringToFront();
mDrawerLayout.requestLayout();

In this post explain the problem and how fix it: http://vardhan-justlikethat.blogspot.com.es/2014/05/android-custom-navigation-drawer-not.html

在这篇文章中解释问题以及如何解决它：http: //vardhan-justlikethat.blogspot.com.es/2014/05/android-custom-navigation-drawer-not.html

回答by aobrazcova

Fixed a similar issue by adding drawerView.bringToFront();to

通过添加drawerView.bringToFront();到修复了类似的问题

@Override
public void onDrawerOpened(View drawerView) {

} 

回答by Kunal

If you have a list in Navigation Drawer then just write the code and make listview clickable:

如果您在 Navigation Drawer 中有一个列表，那么只需编写代码并使列表视图可点击：

list.bringToFront();
drawerLayout.requestLayout(); 

回答by user157745

You should check if you have android:animateLayoutChanges="true"attribute on ListView parent(in layout resource). Removing that attribute worked for me.

您应该检查您是否android:animateLayoutChanges="true"在 ListView 父级（在布局资源中）上具有属性。删除该属性对我有用。

回答by obolsh

I also had a problem with not responding on clicks navigation driver. Somehow I have found a solution: problem was in XML file. I used this and my problem was gone:

我也遇到了点击导航驱动程序没有响应的问题。不知何故，我找到了一个解决方案：问题出在 XML 文件中。我使用了这个，我的问题消失了：

<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="#ffff"/>

hope this will be usefull.

希望这将是有用的。

回答by Endzeit

It seems like the your DrawerItemClickListener.classdoes not work as the only time the selectItem()method is called is at the end of your activities onCreate()at selectItem(0);

似乎您DrawerItemClickListener.class的selectItem()方法不起作用，因为该方法被调用的唯一时间是在您的活动结束onCreate()时selectItem(0);

Instead of calling

而不是打电话

mDrawerList.setOnItemClickListener(new DrawerItemClickListener());

you can use thisas a parameter and let you Activityimplement the ListView.OnItemClickListeneritself.

您可以将其this用作参数并让您Activity实现它ListView.OnItemClickListener本身。

public class MyActivity extends Activity implements ListView.OnItemClickListener {

    public void onCreate(Bundle savedInstanceState) {
        [...]
        mDrawerList = (ListView) findViewById(R.id.left_drawer);

        [...]
        mDrawerList.setOnItemClickListener(this);
        [...]
     }

    [...]    

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        selectItem(position);
    }

    private void selectItem(int position) {
        switch (position) {
            case 1:
                [...]
                startActivity(new Intent(this, SplashScreen.class));
                break;
            [...]
            default:
            break;
        }
        [...]
    }
    [...]
}