Question

我的导航抽屉有问题。我想知道当用户点击每个菜单的不同元素时如何显示recyclerview。以下是一些源代码和说明性捕获

N.B：不同的菜单项（“Accueil，Contacts Staff等......”）位于布局中的.xml文件中。

MainActiviy.java

public class MainActivity extends AppCompatActivity {
ActionBarDrawerToggle drawerToggle;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ButterKnife.inject(this);

    setupWindowAnimations();

    //définir la toolbr en tant qu'actionbar
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setDisplayShowHomeEnabled(true);

    drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, 0, 0);
    drawerLayout.setDrawerListener(drawerToggle);

    navigationView.setNavigationItemSelectedListener(
            new NavigationView.OnNavigationItemSelectedListener() {
                @Override
                public boolean onNavigationItemSelected(MenuItem menuItem) {
                    menuItem.setChecked(true);
                    drawerLayout.closeDrawers();
                    return true;
                }
            });

    //on remplit notre viewpager, comme à notre habitude
    viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public Fragment getItem(int position) {
            return RecyclerViewFragment.newInstance();
        }

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

        @Override
        public int getCount() {
            return 1;
        }
    });

    //indique au tablayout quel est le viewpager à écouter
    tabLayout.setupWithViewPager(viewPager);
}

private void setupWindowAnimations() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

        Explode explode = new Explode();
        getWindow().setExitTransition(explode);

        Fade fade = new Fade();
        getWindow().setReenterTransition(fade);
    }
}

@Override
protected void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);
    drawerToggle.syncState();
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case android.R.id.home:
            drawerLayout.openDrawer(GravityCompat.START);
            return true;
    }
    return super.onOptionsItemSelected(item);
}




@OnClick(R.id.fab)
public void onFabClick() {
    Snackbar.make(fab, "Here's a Snackbar", Snackbar.LENGTH_LONG)
            .setAction("Undo", new View.OnClickListener() {
                @Override
                public void onClick(View v) {

                }
            }).show();
 }
}

Answer 1

您的示例源代码

  public class NavActivity extends AppCompatActivity
            implements NavigationView.OnNavigationItemSelectedListener {

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_nav);
            Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
            setSupportActionBar(toolbar);



            DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
            ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                    this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
            drawer.setDrawerListener(toggle);
            toggle.syncState();

            NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
            navigationView.setNavigationItemSelectedListener(this);
        }

        @Override
        public void onBackPressed() {
            DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
            if (drawer.isDrawerOpen(GravityCompat.START)) {
                drawer.closeDrawer(GravityCompat.START);
            } else {
                super.onBackPressed();
            }
        }



        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            // Handle action bar item clicks here. The action bar will
            // automatically handle clicks on the Home/Up button, so long
            // as you specify a parent activity in AndroidManifest.xml.
            int id = item.getItemId();

            //noinspection SimplifiableIfStatement
            if (id == R.id.action_settings) {
                return true;
            }

            return super.onOptionsItemSelected(item);
        }

        @SuppressWarnings("StatementWithEmptyBody")
        @Override
        public boolean onNavigationItemSelected(MenuItem item) {
            // Handle navigation view item clicks here.
            int id = item.getItemId();

            if (id == R.id.nav_camera) {
                // Handle the camera action
            } else if (id == R.id.nav_gallery) {

            } else if (id == R.id.nav_slideshow) {

            } else if (id == R.id.nav_manage) {

            } else if (id == R.id.nav_share) {

            } else if (id == R.id.nav_send) {

            }

            DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
            drawer.closeDrawer(GravityCompat.START);
            return true;
        }
    }

希望这有助于你

Answer 2

不完全清楚你想要什么。您想在哪里显示回收者视图？您已经拥有OnNavigationItemSelectedListener，只需检查您点击了哪个菜单并执行您想要的操作：

public boolean onNavigationItemSelected(MenuItem menuItem) {
    switch (menuItem.getItemId()) {
       case R.id.contact:
          // do anything you want, ex
          showContactList();
          break;

}

显示联系人列表的功能

private void showContactList(){
    List<Contact> data = getYourDataSomeHow();
    yourAdapter.setData(data);
    yourRecyclerView.setAdapter(yourAdapter);
}

材料设计：带有标签和recyclerview的naviagtion抽屉

2 个答案: