使用文本和圖標的導航抽屜

Question

我想為導航抽屜的每個項目添加圖標。 當前，導航抽屜中只有一個文本。 總結一下，我想創建一個帶有文本和圖標（text + icon）的導航抽屜。 我該怎么做？

主要活動：

import java.util.Locale;

import android.app.Fragment;
import android.app.FragmentManager;

import android.app.SearchManager;
import android.content.Intent;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.app.FragmentActivity;
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.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Toast;

/**
 * This example illustrates a common usage of the DrawerLayout widget
 * in the Android support library.
 * <p/>
 * <p>When a navigation (left) drawer is present, the host activity should detect presses of
 * the action bar's Up affordance as a signal to open and close the navigation drawer. The
 * ActionBarDrawerToggle facilitates this behavior.
 * Items within the drawer should fall into one of two categories:</p>
 * <p/>
 * <ul>
 * <li><strong>View switches</strong>. A view switch follows the same basic policies as
 * list or tab navigation in that a view switch does not create navigation history.
 * This pattern should only be used at the root activity of a task, leaving some form
 * of Up navigation active for activities further down the navigation hierarchy.</li>
 * <li><strong>Selective Up</strong>. The drawer allows the user to choose an alternate
 * parent for Up navigation. This allows a user to jump across an app's navigation
 * hierarchy at will. The application should treat this as it treats Up navigation from
 * a different task, replacing the current task stack using TaskStackBuilder or similar.
 * This is the only form of navigation drawer that should be used outside of the root
 * activity of a task.</li>
 * </ul>
 * <p/>
 * <p>Right side drawers should be used for actions, not navigation. This follows the pattern
 * established by the Action Bar that navigation should be to the left and actions to the right.
 * An action should be an operation performed on the current contents of the window,
 * for example enabling or disabling a data overlay on top of the current content.</p>
 */
public class MainActivity extends FragmentActivity {
    private DrawerLayout mDrawerLayout;
    private ListView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;

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

    @Override
    protected 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());

        // 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.activity_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;
        }
        // Handle action buttons
        switch(item.getItemId()) {
        case R.id.action_websearch:
            // create intent to perform web search for this planet
            Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
            intent.putExtra(SearchManager.QUERY, getActionBar().getTitle());
            // catch event that there's no activity to handle intent
            if (intent.resolveActivity(getPackageManager()) != null) {
                startActivity(intent);
            } else {
                Toast.makeText(this, R.string.app_not_available, Toast.LENGTH_LONG).show();
            }
            return true;
        default:
            return super.onOptionsItemSelected(item);
        }
    }

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

    private void selectItem(int position) {

         Fragment fragment = new PlanetFragment();
         Bundle args = new Bundle();
         FragmentManager fragmentManager = getFragmentManager();

        switch(position){   
        case 0:
            // update the main content by replacing fragments
            args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position);
            fragment.setArguments(args);
            fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();

            // update selected item and title, then close the drawer
            mDrawerList.setItemChecked(position, true);
            setTitle(mPlanetTitles[position]);
            mDrawerLayout.closeDrawer(mDrawerList);
            Toast.makeText(this, String.valueOf(position), Toast.LENGTH_SHORT).show();
            break;

        case 1:
             // Capture the article fragment from the activity layout
            //QuestionActivity articleFrag = (QuestionActivity)
             //       getSupportFragmentManager().findFragmentById(R.id.FrameLayout1);
            Fragment newfragment = new QuestionActivity();
            // update the main content by replacing fragments
            args.putInt(QuestionActivity.ARG_POSITION, position);
            newfragment.setArguments(args);
            fragmentManager.beginTransaction().replace(R.id.content_frame, newfragment).commit();

            // update selected item and title, then close the drawer
            mDrawerList.setItemChecked(position, true);
            setTitle(mPlanetTitles[position]);
            mDrawerLayout.closeDrawer(mDrawerList);
            Toast.makeText(this, String.valueOf(position), Toast.LENGTH_SHORT).show();



            //FragmentManager fragmentManager1 = getFragmentManager();
            //Fragment frag1 =(Fragment) fragmentManager1.findFragmentById(R.id.);
            //Bundle args1 = new Bundle();

            //Fragment frag1 =(Fragment) fragmentManager.findFragmentById(R.id.)
             // This method will be executed once the timer is over
            // Start your app main activity
           // Intent i = new Intent(this, QuestionActivity.class);
          //  startActivity(i);
            // close this activity
           Toast.makeText(this, "Indicativo de acao ", Toast.LENGTH_SHORT).show();
            break; 

        case 2:
            // update the main content by replacing fragments
            args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position);
            fragment.setArguments(args);
            fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();

            // update selected item and title, then close the drawer
            mDrawerList.setItemChecked(position, true);
            setTitle(mPlanetTitles[position]);
            mDrawerLayout.closeDrawer(mDrawerList);
            Toast.makeText(this, String.valueOf(position), Toast.LENGTH_SHORT).show();
            break; 

        case 3:
            // update the main content by replacing fragments
            args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position);
            fragment.setArguments(args);
            fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();

            // update selected item and title, then close the drawer
            mDrawerList.setItemChecked(position, true);
            setTitle(mPlanetTitles[position]);
            mDrawerLayout.closeDrawer(mDrawerList);
            Toast.makeText(this, String.valueOf(position), Toast.LENGTH_SHORT).show();
            break; 

        case 4:
            // update the main content by replacing fragments
            args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position);
            fragment.setArguments(args);
            fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();

            // update selected item and title, then close the drawer
            mDrawerList.setItemChecked(position, true);
            setTitle(mPlanetTitles[position]);
            mDrawerLayout.closeDrawer(mDrawerList);
            Toast.makeText(this, String.valueOf(position), Toast.LENGTH_SHORT).show();
            break;

        case 5:
            // update the main content by replacing fragments
            args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position);
            fragment.setArguments(args);
            fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();

            // update selected item and title, then close the drawer
            mDrawerList.setItemChecked(position, true);
            setTitle(mPlanetTitles[position]);
            mDrawerLayout.closeDrawer(mDrawerList);
            Toast.makeText(this, String.valueOf(position), Toast.LENGTH_SHORT).show();
            break;

        case 6:
            // update the main content by replacing fragments
            args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position);
            fragment.setArguments(args);
            fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();

            // update selected item and title, then close the drawer
            mDrawerList.setItemChecked(position, true);
            setTitle(mPlanetTitles[position]);
            mDrawerLayout.closeDrawer(mDrawerList);
            Toast.makeText(this, String.valueOf(position), Toast.LENGTH_SHORT).show();
            break;

        case 7:
             // This method will be executed once the timer is over
            // Start your app main activity
            Intent j = new Intent(this, ScreenSplash.class);
            startActivity(j);
            // close this activity
            finish();

            Toast.makeText(this, "Indicativo de acao ", Toast.LENGTH_SHORT).show();
            break;          
            }        
    }




    @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;
        }
    }
}

cabinet_list_item：（xml）

<!--
  Copyright 2013 The Android Open Source Project

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
  -->

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/text1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceListItemSmall"
    android:gravity="center_vertical"
    android:paddingLeft="16dp"
    android:paddingRight="16dp"
    android:textColor="#fff"
    android:background="?android:attr/activatedBackgroundIndicator"
    android:minHeight="?android:attr/listPreferredItemHeightSmall"/>

字符串（xml）：

    <string name="hello_world">Hello world!</string>
    <string name="menu_settings">Settings</string>
    <string name="title_activity_main">MainActivity</string>
    <string name="b_salvar">Save</string>

    <string-array name="planets_array">
        <item>Main</item>
        <item>Ask</item>
        <item>Earth</item>
        <item>Mars</item>
        <item>Jupiter</item>
        <item>Saturn</item>
        <item>Uranus</item>
        <item>Neptune</item>
        <item>Fragmento 1</item>
    </string-array>


    <string name="drawer_open">Open navigation drawer</string>
    <string name="drawer_close">Close navigation drawer</string>
    <string name="action_websearch">Web search</string>
    <string name="app_not_available">Sorry, there\'s no web browser available</string>
    <string name="title_activity_question">QuestionActivity</string>

</resources>

Answer 1

您可以將導航視圖用於導航抽屜，如下所示，

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 android:id="@+id/drawer_layout"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:fitsSystemWindows="true">

 <!-- Your contents -->

 <android.support.design.widget.NavigationView
     android:id="@+id/navigation"
     android:layout_width="wrap_content"
     android:layout_height="match_parent"
     android:layout_gravity="start"
     app:menu="@menu/my_navigation_items" />

navigation_items.xml看起來像

<?xml version="1.0" encoding="utf-8"?>

<group android:checkableBehavior="single">

    <item
        android:id="@+id/inbox"
        android:checked="false"
        android:icon="@drawable/ic_inbox_black"
        android:title="@string/inbox_string" />

    <item
        android:id="@+id/starred"
        android:checked="false"
        android:icon="@drawable/ic_star_black"
        android:title="@string/starred_string" />

    <item
        android:id="@+id/sent_mail"
        android:checked="false"
        android:icon="@drawable/ic_send_black"
        android:title="@string/sent_mail_string" />

    <item
        android:id="@+id/drafts"
        android:checked="false"
        android:icon="@drawable/ic_drafts_black"
        android:title="@string/draft_string" />


    <item
        android:id="@+id/allmail"
        android:checked="false"
        android:icon="@drawable/ic_email_black"
        android:title="@string/all_mail_string" />
    <item
        android:id="@+id/trash"
        android:checked="false"
        android:icon="@drawable/ic_delete_black"
        android:title="@string/trash_string" />
    <item
        android:id="@+id/spam"
        android:checked="false"
        android:icon="@drawable/ic_error_black"
        android:title="@string/spam_string" />

</group>

Answer 2

您會在stackoverflow上找到許多教程，實際上人們會將您鏈接到這些教程，但是我想您真的是android新手，意味着您可以理解這個奇妙的新世界。 現在，我也從行星示例開始。

1. 您只能看到一個textview，因為您的cabinet_list_item只有一個textview，您從一個新的.xml文件開始編寫一個模板，其中列表項包含一個textview和一個imageview。

2. 現在您已准備好視圖。 您需要數據來填充該視圖。 <string-array name="planets_array">此數組保存將被加載到<string-array name="planets_array">數據，類似地，您需要一個數組或類似的東西來保存將放置在資源文件夾中的圖像資源文件的名稱。

3. 最后，您需要一個適配器來將兩者綁定在一起，在您的示例中，此行完成了

   mDrawerList.setAdapter（new ArrayAdapter（this，R.layout.drawer_list_item，mPlanetTitles））;

您需要一個用於自定義適配器的類和一個用於您的Viewholder的類，您需要擴展一個適配器類，為簡單起見，只需擴展ArrayAdapter類並覆蓋getview（）函數。 回到viewholder，這將在列表中定義和視圖元素，即textview和imageview。 在getview函數中設置視圖的數據，即在數組中定義的數據。

希望這可以幫助您更好地理解教程。 干杯