使用仅 Android Support Library 实现 NavigationDrawer

7

有没有使用Android Support Library(版本18)在Android +2.2上实现导航抽屉的示例项目,而不使用任何其他库(例如ABS等)?这是一个使用ASL的示例,但仅适用于API +14: http://developer.android.com/training/implementing-navigation/nav-drawer.html

这是我的MainActivity:

package com.example.android.navigationdrawerexample;

import java.util.Locale;

import android.app.Activity;
//import android.app.Fragment;
//import android.app.FragmentManager;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;

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.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;

public class MainActivity extends FragmentActivity {
    private DrawerLayout mDrawerLayout;
    private ListView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;

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

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

    private void selectItem(int position) {
        // update the main content by replacing fragments
        Fragment fragment = new PlanetFragment();
        Bundle args = new Bundle();
        args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position);
        fragment.setArguments(args);

        FragmentManager fragmentManager = getSupportFragmentManager();
        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);
    }

    @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;
        }
    }
}

当然,我已经将minSdk更改为8,但它仍然无法工作。
3个回答

21

首先,您需要扩展ActionBarActivity而不是FragmentActivity

其次,将您的应用程序主题更改为@style/Theme.AppCompat或@style/Theme.AppCompat.Light

第三,将每个对getActionBar()的调用更改为对getSupportActionBar()的调用,将invalidateOptionsMenu()更改为supportInvalidateOptionsMenu()

以上就是需要做的,这是我使用AppCompat-v7进行测试的Google示例,我还使用了自定义适配器来处理listview,可以忽略它 :)

https://github.com/BradleyRL/NavDrawerExampleAppCompat-v7


谢谢,我导入了你的项目,但是在 res/layout/drawer_list_item.xml 和 activity_main.xml 中出现了错误:在当前主题中找不到样式“textViewStyle”。android.content.res.Resources$NotFoundException "?attr/listPreferredItemHeightSmall" 在属性"minHeight"中不是一个有效的格式。 - user1518451
你是否导出了整个项目?并且在Eclipse中有AppCompat-v7库? - BradR
是的,我导入整个项目并将android-support-v7-appcompat.jar添加到libs中。还有其他建议吗? - user1518451
你不需要将android-support-v7-appcompat.jar添加到libs目录中:S,最好从Google网站http://developer.android.com/tools/support-library/setup.html阅读如何设置库,特别是“使用资源添加库”部分。 - BradR
现在我遇到了一个错误: 容器“Android Dependencies”引用了不存在的库“/home/jack/Android/adt-bundle-linux-x86-20130522/sdk/extras/android/support/v7/appcompat/bin/android-support-v7-appcompat.jar”。还有其他建议吗? - user1518451

3

您只需要在项目中导入v4支持库,然后可以按照您提供的文档示例操作。

对于Android 2.2及以上版本,只需将任何片段使用替换为从库中使用的支持片段。


它只能在SDK 14及以上版本上运行,因为示例项目是针对该版本设置的。请创建自己的项目并将最小SDK设置为8,然后按照教程进行操作。您在运行示例时遇到了什么问题? - tyczj
它仍然没有告诉我你遇到了什么问题。按照我的建议,使用你想要的内容创建一个新的示例项目,导入库并按照教程操作,不要使用演示项目中的代码。 - tyczj

0

你为什么认为它只适用于API 14+?如果是可下载示例中清单文件中的minSDKVersion,我猜那只是为了使用他们所使用的Holo主题。 只需将minSDKVersion更改为8或更高版本,并修复需要匹配的内容即可。导航抽屉本身应该可以与支持库的v4版本一起使用,支持SDK版本降至4。


2
不要贴出所有的代码,尝试解释哪些部分没有按预期工作。没有人会阅读这么多的代码。 - Ridcully

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