setDisplayHomeAsUpEnabled關閉ActionBarDrawerToggle

Question

當我點擊主頁圖標時，抽屜會打開，然後立即將我帶回到之前的活動。我相信setDisplayHomeAsUpEnabled（true）會干擾保持打開的操作欄抽屜。

代碼中是否有可能導致此問題的東西？

import android.support.v4.app.ActionBarDrawerToggle; 
import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentActivity; 
import android.support.v4.app.FragmentManager; 
import android.support.v4.app.FragmentStatePagerAdapter; 
import android.support.v4.view.GravityCompat; 
import android.support.v4.widget.DrawerLayout; 

public class GenericActivity extends FragmentActivity implements SearchView.OnQueryTextListener { 

/** Slide out drawer navigation **/ 
private DrawerLayout mDrawerLayout; 
private ListView mDrawerList; 
private ActionBarDrawerToggle mDrawerToggle; 
private CharSequence mDrawerTitle; 
private CharSequence mTitle; 
private String[] mTitles; 

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

    // Set up drawer navigation. 
    mTitle = mDrawerTitle = getTitle(); 
    mTitles = getResources().getStringArray(R.array.in_draft_menu_items); 
    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, mTitles)); 
    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, mDrawerLayout, R.drawable.ic_drawer, R.string.drawer_open, R.string.drawer_close) { 
     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.in_draft, menu); 

    // Inflate the menu; this adds items to the action bar if it is present. 
    MenuItem statusItem = menu.findItem(R.id.draftStatusMenuItem); 
    mChatItem = menu.findItem(R.id.chatMenuItem); 
    MenuItem settingsItem = menu.findItem(R.id.settingsMenuItem); 
    final MenuItem refreshItem = menu.findItem(R.id.refreshMenuItem); 
    final MenuItem searchItem = menu.findItem(R.id.action_search); 
    if (mSearchFieldToggleState == 1) { 
     searchItem.setVisible(true); 
     mSearchView = (SearchView) searchItem.getActionView(); 
     mSearchView.setOnQueryTextListener(this); 

     // Close the search when mSearchView is not focused. Also, show/hide the refresh menu button depending on the state. 
     mSearchView.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() { 
      @Override 
      public void onFocusChange(View view, boolean queryTextFocused) { 
       if(!queryTextFocused) { 
        searchItem.collapseActionView(); 
        mSearchView.setQuery("", true); 
        refreshItem.setVisible(true); 
       } else { 
        refreshItem.setVisible(false); 
       } 
      } 
     }); 
    } else { 
     searchItem.setVisible(false); 
    } 

    if (refreshItem == null) { 
     return true; 
    } 

    // Set this menu item to refresh the league. 
    refreshItem.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() { 
     public boolean onMenuItemClick(MenuItem item) { 
      return draftRefreshMenuItem(item); 
     } 
    }); 

    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.refreshMenuItem).setVisible(!drawerOpen); 
    menu.findItem(R.id.action_search).setVisible(!drawerOpen); 
    return super.onPrepareOptionsMenu(menu); 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    // The action bar home/up action should open or close the drawer. 
    if(mDrawerToggle.onOptionsItemSelected(item)) { 
     return true; 
    } 
    return super.onOptionsItemSelected(item); 
} 

/* The click listener 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) { 
    mSearchFieldToggleState = 0; 
    invalidateOptionsMenu(); 

    // When the given dropdown item is selected, show its contents in the 
    // container view. 
    if (position == 0){ 
     mSearchFieldToggleState = 1; 
     invalidateOptionsMenu(); 
     Fragment fragment = new DraftSectionFragment(); 
     getSupportFragmentManager().beginTransaction().replace(R.id.container, fragment).commit(); 
    } else if (position == 1) { 
     Fragment fragment = new MyTeamSectionFragment(); 
     getSupportFragmentManager().beginTransaction().replace(R.id.container, fragment).commit(); 
    } else if (position == 2) { 
     Fragment fragment = new RostersSectionFragment(); 
     getSupportFragmentManager().beginTransaction().replace(R.id.container, fragment).commit(); 
    } else if (position == 3) { 
     Fragment fragment = new ResultsSectionFragment(); 
     getSupportFragmentManager().beginTransaction().replace(R.id.container, fragment).commit(); 
    } 

    // update selected item and title, then close the drawer 
    mDrawerList.setItemChecked(position, true); 
    setTitle(mTitles[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 toggles 
    mDrawerToggle.onConfigurationChanged(newConfig); 
} 

/** 
* Handle the query text changing. Submit the query to the filter. 
* @param query 
* @return 
*/ 
public boolean onQueryTextChange(String query) { 
    if (mDraftPlayerAdapter != null && mDraftViewPager != null && mDraftPlayerAdapter.getFragmentReferenceMap() != null 
      && mDraftPlayerAdapter.getFragmentReferenceMap().get(mDraftViewPager.getCurrentItem()) != null) { 
     mDraftPlayerAdapter.getFragmentReferenceMap().get(mDraftViewPager.getCurrentItem()).getFilter().filter(query); 
    } 
    return false; 
} 

/** 
* Handle the query text being submitted - with a return key. Same process as onQueryTextChange. 
* @param query 
* @return 
*/ 
public boolean onQueryTextSubmit(String query) { 
    onQueryTextChange(query); 
    return false; 
} 
} 

Answer 1

在支持庫的早期版本中，mDrawerToggle.onOptionsItemSelected(item)總是返回false - 確保你使用的是最新版本的Support Library（或至少版本18或更高）。

這是從支持庫的R18的最新代碼：

public boolean onOptionsItemSelected(MenuItem item) { 
    if (item != null && item.getItemId() == ID_HOME && mDrawerIndicatorEnabled) { 
     if (mDrawerLayout.isDrawerVisible(GravityCompat.START)) { 
      mDrawerLayout.closeDrawer(GravityCompat.START); 
     } else { 
      mDrawerLayout.openDrawer(GravityCompat.START); 
     } 
     return true; 
    } 
    return false; 
} 

正如你看到的，它會如果它在傳遞返回該項目真正的home鍵（android.R.id.home是一樣的ID_HOME）和mDrawerToggle.isDrawerIndicatorEnabled()是true（其默認值）。