ANDROID - 无法解析方法 : getSupportActionBar()

Question

这是我的代码:

package com.greenwichdancestudio.greenwichdance;

import java.util.ArrayList;
import java.util.List;

import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.content.res.Configuration;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;



public class MainActivity extends FragmentActivity {

    private DrawerLayout mDrawerLayout;
    private ListView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;

    private CharSequence mDrawerTitle;
    private CharSequence mTitle;
    CustomDrawerAdapter adapter;

    List<DrawerItem> dataList;

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

        // Initializing
        dataList = new ArrayList<DrawerItem>();
        mTitle = mDrawerTitle = getTitle();
        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mDrawerList = (ListView) findViewById(R.id.left_drawer);

        mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
                GravityCompat.START);

        // Add Drawer Item to Data List
        dataList.add(new DrawerItem("Message", R.drawable.ic_action_email));
        dataList.add(new DrawerItem("Likes", R.drawable.ic_action_good));
        dataList.add(new DrawerItem("Games", R.drawable.ic_action_gamepad));
        dataList.add(new DrawerItem("Lables", R.drawable.ic_action_labels));
        dataList.add(new DrawerItem("Search", R.drawable.ic_action_search));
        dataList.add(new DrawerItem("Cloud", R.drawable.ic_action_cloud));
        dataList.add(new DrawerItem("Camara", R.drawable.ic_action_camera));
        dataList.add(new DrawerItem("Video", R.drawable.ic_action_video));
        dataList.add(new DrawerItem("Groups", R.drawable.ic_action_group));
        dataList.add(new DrawerItem("Import & Export",
                R.drawable.ic_action_import_export));
        dataList.add(new DrawerItem("About", R.drawable.ic_action_about));
        dataList.add(new DrawerItem("Settings", R.drawable.ic_action_settings));
        dataList.add(new DrawerItem("Help", R.drawable.ic_action_help));

        adapter = new CustomDrawerAdapter(this, R.layout.custom_drawer_item, dataList);

        mDrawerList.setAdapter(adapter);

        mDrawerList.setOnItemClickListener(new DrawerItemClickListener());

        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setHomeButtonEnabled(true);

        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
                R.string.drawer_open, R.string.drawer_close)
        {
            public void onDrawerClosed(View view) {
                getSupportActionBar().setTitle(mTitle);
                invalidateOptionsMenu(); // creates call to
                // onPrepareOptionsMenu()
            }

            public void onDrawerOpened(View drawerView) {
                getSupportActionBar().setTitle(mDrawerTitle);
                invalidateOptionsMenu(); // creates call to
                // onPrepareOptionsMenu()
            }
        };

        mDrawerLayout.setDrawerListener(mDrawerToggle);

        if (savedInstanceState == null) {
            SelectItem(0);
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    public void SelectItem(int position) {

        Fragment fragment = null;
        Bundle args = new Bundle();
        switch (position) {
            case 0:
                fragment = new FragmentOne();
                args.putString(FragmentOne.ITEM_NAME, dataList.get(position)
                        .getItemName());
                args.putInt(FragmentOne.IMAGE_RESOURCE_ID, dataList.get(position)
                        .getImgResID());
                break;
            case 1:
                fragment = new FragmentTwo();
                args.putString(FragmentTwo.ITEM_NAME, dataList.get(position)
                        .getItemName());
                args.putInt(FragmentTwo.IMAGE_RESOURCE_ID, dataList.get(position)
                        .getImgResID());
                break;
            case 2:
                fragment = new FragmentThree();
                args.putString(FragmentThree.ITEM_NAME, dataList.get(position)
                        .getItemName());
                args.putInt(FragmentThree.IMAGE_RESOURCE_ID, dataList.get(position)
                        .getImgResID());
                break;
            case 3:
                fragment = new FragmentOne();
                args.putString(FragmentOne.ITEM_NAME, dataList.get(position)
                        .getItemName());
                args.putInt(FragmentOne.IMAGE_RESOURCE_ID, dataList.get(position)
                        .getImgResID());
                break;
            case 4:
                fragment = new FragmentTwo();
                args.putString(FragmentTwo.ITEM_NAME, dataList.get(position)
                        .getItemName());
                args.putInt(FragmentTwo.IMAGE_RESOURCE_ID, dataList.get(position)
                        .getImgResID());
                break;
            case 5:
                fragment = new FragmentThree();
                args.putString(FragmentThree.ITEM_NAME, dataList.get(position)
                        .getItemName());
                args.putInt(FragmentThree.IMAGE_RESOURCE_ID, dataList.get(position)
                        .getImgResID());
                break;
            case 6:
                fragment = new FragmentOne();
                args.putString(FragmentOne.ITEM_NAME, dataList.get(position)
                        .getItemName());
                args.putInt(FragmentOne.IMAGE_RESOURCE_ID, dataList.get(position)
                        .getImgResID());
                break;
            case 7:
                fragment = new FragmentTwo();
                args.putString(FragmentTwo.ITEM_NAME, dataList.get(position)
                        .getItemName());
                args.putInt(FragmentTwo.IMAGE_RESOURCE_ID, dataList.get(position)
                        .getImgResID());
                break;
            case 8:
                fragment = new FragmentThree();
                args.putString(FragmentThree.ITEM_NAME, dataList.get(position)
                        .getItemName());
                args.putInt(FragmentThree.IMAGE_RESOURCE_ID, dataList.get(position)
                        .getImgResID());
                break;
            case 9:
                fragment = new FragmentOne();
                args.putString(FragmentOne.ITEM_NAME, dataList.get(position)
                        .getItemName());
                args.putInt(FragmentOne.IMAGE_RESOURCE_ID, dataList.get(position)
                        .getImgResID());
                break;
            case 10:
                fragment = new FragmentTwo();
                args.putString(FragmentTwo.ITEM_NAME, dataList.get(position)
                        .getItemName());
                args.putInt(FragmentTwo.IMAGE_RESOURCE_ID, dataList.get(position)
                        .getImgResID());
                break;
            case 11:
                fragment = new FragmentThree();
                args.putString(FragmentThree.ITEM_NAME, dataList.get(position)
                        .getItemName());
                args.putInt(FragmentThree.IMAGE_RESOURCE_ID, dataList.get(position)
                        .getImgResID());
                break;
            case 12:
                fragment = new FragmentOne();
                args.putString(FragmentOne.ITEM_NAME, dataList.get(position)
                        .getItemName());
                args.putInt(FragmentOne.IMAGE_RESOURCE_ID, dataList.get(position)
                        .getImgResID());
                break;
            default:
                break;
        }

        fragment.setArguments(args);
        FragmentManager frgManager = getSupportFragmentManager();
        frgManager.beginTransaction().replace(R.id.content_frame, fragment)
                .commit();

        mDrawerList.setItemChecked(position, true);
        setTitle(dataList.get(position).getItemName());
        mDrawerLayout.closeDrawer(mDrawerList);

    }

    @Override
    public void setTitle(CharSequence title) {
        mTitle = title;
        getSupportActionBar().setTitle(mTitle);
    }

    @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 toggles
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

    @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 false;
    }

    private class DrawerItemClickListener implements
            ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                                long id) {
            SelectItem(position);

        }
    }
}

只要有 getSupportActionBar() 调用，我就会收到以下错误:“无法解析方法‘getSupportActionBar()’”。

我已经尝试导入 v7 和 v4 版本，但无济于事。也许我做错了什么？

有什么建议吗？ 将不胜感激!!!谢谢!

Answer 1

你需要改变

public class MainActivity extends FragmentActivity {..}

到

public class MainActivity extends ActionBarActivity {..}