Question

我实施了BaseActivity，扩展了ActionBarActivity并实现了NavigationDrawer。我的所有Activities都继承自此BaseActivity。我现在想知道我是否可以实现NavigationDrawer并且仍然使用工具栏进行适当的向上导航，或者当我实现NavigationDrawer时，设备后退按钮是否应该用作向上导航按钮？

编辑：

自定义NavigationDrawer Toolbar

public abstract class NavigationActivity extends ActionBarActivity {
    private Toolbar toolbar = null;
    private DrawerLayout drawerLayout = null;
    private ActionBarDrawerToggle drawerToggle = null;;
    private ListView listView = null;
    private CharSequence drawerTitle = null;
    private CharSequence title = null;
    private NavigationDrawerConfiguration navigationConfig = null;

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

        this.navigationConfig = this.getNavigationDrawerConfiguration();
        this.setContentView(this.navigationConfig.getMainLayout());

        this.toolbar = (Toolbar) this.findViewById(R.id.app_bar);
        this.drawerLayout = (DrawerLayout) this.findViewById(navigationConfig.getDrawerLayoutId());
        this.listView = (ListView) this.findViewById(navigationConfig.getLeftDrawerId());
        this.listView.setAdapter(navigationConfig.getBaseAdapter());
        this.listView.setOnItemClickListener(new DrawerItemClickListener());
        this.drawerTitle = this.getTitle();
        this.title = this.getTitle();

        this.setSupportActionBar(this.toolbar);
        this.getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        this.getSupportActionBar().setHomeButtonEnabled(true);

        this.drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, this.toolbar, this.navigationConfig.getDrawerOpenDesc(), this.navigationConfig.getDrawerCloseDesc()) {
            @Override
            public void onDrawerClosed(View view) {
                getSupportActionBar().setTitle(title);
                invalidateOptionsMenu();
            }
            @Override
            public void onDrawerOpened(View drawerView) {
                getSupportActionBar().setTitle(drawerTitle);
                invalidateOptionsMenu();
            }
        };

        this.drawerLayout.setDrawerListener(this.drawerToggle);
    }

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

        this.drawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);

        this.drawerToggle.onConfigurationChanged(newConfig);
    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        if (this.navigationConfig.getActionMenuItemsToHideWhenDrawerOpen() != null) {
            boolean drawerOpen = this.drawerLayout.isDrawerOpen(listView);

            for (int item : this.navigationConfig.getActionMenuItemsToHideWhenDrawerOpen()) {
                menu.findItem(item).setVisible(!drawerOpen);
            }
        }

        return super.onPrepareOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (this.drawerToggle.onOptionsItemSelected(item)) {
            return true;
        } else {
            return false;
        }
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_MENU) {
            if (this.drawerLayout.isDrawerOpen(this.listView)) {
                this.drawerLayout.closeDrawer(this.listView);
            } else {
                this.drawerLayout.openDrawer(this.listView);
            }

            return true;
        }

        return super.onKeyDown(keyCode, event);
    }

    protected NavigationDrawerConfiguration getNavigationDrawerConfiguration() {

        NavigationDrawerItem[] menu = new NavigationDrawerItem[] {
//              NavigationMenuSection.create(100, "Demos"),
                NavigationMenuItem.create(100, "Item 1", "ic_measure", false, this),
                NavigationMenuItem.create(200, "Item 2", "ic_list", false, this),
//              NavigationMenuSection.create(200, "General"),
                NavigationMenuItem.create(300, "Item 3", "ic_diagrams", false, this),
                NavigationMenuItem.create(400, "Item 4", "ic_calculator", false, this),
                NavigationMenuItem.create(500, "Item 5", "ic_scanner", false, this),
                NavigationMenuItem.create(600, "Item 6", "ic_profile", false, this),
                NavigationMenuItem.create(700, "Item 7", "ic_follower", false, this),
                NavigationMenuItem.create(800, "Item 8", "ic_settings", false, this)
        };

        NavigationDrawerConfiguration navigationDrawerConfiguration = new NavigationDrawerConfiguration();
        navigationDrawerConfiguration.setMainLayout(R.layout.activity_menu_slide);
        navigationDrawerConfiguration.setDrawerLayoutId(R.id.menu_slide_layout);
        navigationDrawerConfiguration.setLeftDrawerId(R.id.menu_slide_list);
        navigationDrawerConfiguration.setNavigationItems(menu);
        navigationDrawerConfiguration.setDrawerOpenDesc(R.string.open_navigation_drawer);
        navigationDrawerConfiguration.setDrawerCloseDesc(R.string.close_navigation_drawer);
        navigationDrawerConfiguration.setBaseAdapter(new NavigationDrawerAdapter(this, R.layout.activity_menu_slide_item_row, menu));

        return navigationDrawerConfiguration;
    }

    public void selectItem(int position) {
        NavigationDrawerItem selectedItem = this.navigationConfig.getNavigationItems()[position];

        this.onNavigationItemSelected(selectedItem.getId());
        this.listView.setItemChecked(position, true);

        if (selectedItem.updateActionBarTitle()) {
            this.setTitle(selectedItem.getLabel());
        }

        if (this.drawerLayout.isDrawerOpen(this.listView)) {
            this.drawerLayout.closeDrawer(this.listView);
        }
    }

    protected void onNavigationItemSelected(int id) {
        Intent intent = null;

        switch ((int) id) {
        case 100:
            intent = new Intent(this, MeasureDataActivity.class);
            break;
        case 200:
            intent = new Intent(this, MeasureDataListActivity.class);
            break;
        case 300:
            intent = new Intent(this, DiagramsActivity.class);
            break;
        case 400:
            intent = new Intent(this, CalcActivity.class);
            break;
        case 500:
            intent = new Intent(this, RecipeActivity.class);
            break;
        case 600:
            intent = new Intent(this, ProfileActivity.class);
            break;
        case 700:
            intent = new Intent(this, FollowerActivity.class);
            break;
        case 800:
            intent = new Intent(this, SettingsActivity.class);
            break;
        }

        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

        this.startActivity(intent);
    }

    protected int getDrawerIcon() {
        return R.drawable.ic_navigation_drawer;
    }

    protected DrawerLayout getDrawerLayout() {
        return this.drawerLayout;
    }

    protected ActionBarDrawerToggle getDrawerToggle() {
        return this.drawerToggle;
    }

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

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

Answer 1

我认为在super（）调用之后的onCreate中你可以这样做：

mDrawerToggle.setDrawerIndicatorEnabled(false);

如果仅此一项不起作用（或只是不起作用），请尝试以下方法：

getActionBar().setDisplayHomeAsUpEnabled(true);

请点击此链接：Missing Up navigation icon after switching from ICS ActionBar to Lollipop Toolbar

原始海报发现此链接

导航抽屉和向上导航

1 个答案: