我知道之前已经提到过导航的问题,但 Developer Docs说

As another mode of navigation (or filtering)

那么,什么是动作栏中的微调器的替换,它只是重新查询数据库并根据所选选项更新视图？

这个问题已经很老了,但无论如何我都给出了答案.

当您迁移到v7支持库时需要更改监听器.

public class YourActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener

关于微调器的创建

Spinner spinner = (Spinner) findViewById(R.id.spinner);
spinner.setonItemSelectedListener(this); //set the listener

实现监听器方法

@Override
    public void onItemSelected(AdapterView<?> parent,View view,int position,long id) {
        Snackbar.make(this.getCurrentFocus(),"OnItemSelected",Snackbar.LENGTH_LONG);
        //Your implementation here
    }

    @Override
    public void onnothingSelected(AdapterView<?> parent) {
        Snackbar.make(this.getCurrentFocus(),"onnothingSelected",Snackbar.LENGTH_LONG);
        //Your implementation here
    }

onnothingSelected方法使用不清楚.你可以阅读this帖子来澄清.

我希望它有所帮助.

问候

我试图在我的应用程序中使用来自 Android支持设计库的NavigationView.由于某些原因OnNavigationItemSelected监听器未被调用.这是我的代码 @H_301_2@活动布局

<android.support.design.widget.NavigationView
    android:id="@+id/navigation_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    app:headerLayout="@layout/drawer_header"
    app:menu="@menu/drawer_menu" />

        <FrameLayout
            android:id="@+id/content_frame"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

@H_301_2@活动onCreate()

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(getLayoutID());

    toolbar = (Toolbar) findViewById(R.id.activity_toolbar);
    setSupportActionBar(toolbar);
    toolbar.inflateMenu(R.menu.common_menu);
    final ActionBar actionBar = getSupportActionBar();
    if (actionBar != null) {
        actionBar.setHomeAsUpIndicator(R.drawable.ic_menu_white_24dp);
        actionBar.setdisplayHomeAsUpEnabled(true);
    }

    drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    navigationView = (NavigationView) findViewById(R.id.navigation_view);
    navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
        @Override
        public boolean onNavigationItemSelected(final MenuItem menuItem) {
            Snackbar.make(contentLayout,menuItem.getTitle() + " pressed",Snackbar.LENGTH_LONG).show();
            menuItem.setChecked(true);
            // allow some time after closing the drawer before performing real navigation
            // so the user can see what is happening
            drawerLayout.closeDrawer(GravityCompat.START);
            mDrawerActionHandler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    navigate(menuItem.getItemId());
                }
            },DRAWER_CLOSE_DELAY_MS);
            drawerLayout.closeDrawers();
            return true;
        }

    });
    usernameTextView = (TextView) findViewById(R.id.drawer_header_username);                  
    usernameTextView.setText(getAppDContext().getAccount().getUsername());
   }

当你做一个xml时,你应该在BaseLayout(FrameLayout,LinearLayout等)之后写下NavigationView

<DrawerLayout>
    <FrameLayout />
    <NavigationView />
</DrawerLayout>