android - setIconified(false) 强制关闭我的应用

Question

现在我没有强制关闭，但是键盘在没有打开搜索框的情况下弹出，如下图所示:

我的搜索 fragment Activity 如下所示:

public class Search extends Fragment implements SearchView.OnQueryTextListener, ReadJSONResult.OnArticleSelectedListener {

    private ListView lv;
    View v;
    SearchView searchView;
    private SearchView mSearchView;
    private MenuItem mSearchMenuItem;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        //set layout here
        v = inflater.inflate(R.layout.activity_search, container, false);
        setHasOptionsMenu(true);
        getActivity().setTitle("Search");


        //get user information
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
        String userName = prefs.getString("userName", null);
        String userID = prefs.getString("userID", null);

        //ActionBar actionBar = getActivity().getActionBar();





        // Inflate the layout for this fragment
        return v;


}


    @Override
    public void onCreateOptionsMenu (Menu menu, MenuInflater inflater) {
        // Inflate the menu; this adds items to the action bar if it is present.

        searchView = (SearchView) menu.findItem(R.id.menu_search2).getActionView();
        searchView.setOnQueryTextListener(this);
        searchView.setIconified(false);
    }




    public boolean onQueryTextSubmit (String query) {

        //toast query

        //make json variables to fill

        // url to make request
        String url = "myURL";



        try {
            query = URLEncoder.encode(query, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }


        String jsonUrl = url + query;



        //todo: get json
        ReadJSONResult task = new ReadJSONResult(getActivity());
        task.setOnArticleSelectedListener(this);
        task.execute(jsonUrl);

        return false;
    }





    @Override
    public boolean onQueryTextChange(String newText) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public void onArticleSelected(String b, String brewery){

        //code to execute on click
        Fragment Fragment_one;
        FragmentManager man= getFragmentManager();
        FragmentTransaction tran = man.beginTransaction();

        Fragment_one = new BeerPage();
        final Bundle bundle = new Bundle();
        bundle.putString("beerIDSent", b);
        bundle.putString("breweryIDSent", brewery);
        Fragment_one.setArguments(bundle);
        tran.replace(R.id.main, Fragment_one);//tran.
        tran.addToBackStack(null);
        tran.commit();

    }





}

我的 android 操作栏菜单 xml 是:

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context=".MainActivity" >

    <item android:id="@+id/menu_search2"
        android:actionViewClass="android.widget.SearchView"
        android:title="Search"
        android:icon="@android:drawable/ic_menu_search"
        android:showAsAction="ifRoom|collapseActionView"
        />
</menu>

这个 fragment 被加载到的 Activity 是:

public class MainDrawer2 extends FragmentActivity
{
    private static final String EXTRA_NAV_ITEM    = "extraNavItem";
    private static final String STATE_CURRENT_NAV = "stateCurrentNav";

    private ActionBarDrawerToggle mDrawerToggle;
    private DrawerLayout mDrawerLayout;

    private NavDrawerListAdapter mDrawerAdapter;
    private ListView mDrawerList;

    private CharSequence mTitle;
    private CharSequence mDrawerTitle;

    private MainNavItem mCurrentNavItem;


    public static Intent createLaunchFragmentIntent(Context context, MainNavItem navItem)
    {
        return new Intent(context, MainDrawer2.class)
                .putExtra(EXTRA_NAV_ITEM, navItem.ordinal());
    }

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

        mTitle = mDrawerTitle = getTitle();
        mDrawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout);
        mDrawerList   = (ListView)findViewById(R.id.drawer);

        getActionBar().setDisplayHomeAsUpEnabled(true);
        enableHomeButtonIfRequired();

        mDrawerAdapter = new NavDrawerListAdapter(getApplicationContext());
        mDrawerList.setAdapter(mDrawerAdapter);
        mDrawerList.setOnItemClickListener(new ListView.OnItemClickListener()
        {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id)
            {
                displayNavFragment((MainNavItem)parent.getItemAtPosition(position));
            }
        });

        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
                R.drawable.ic_drawer, R.string.app_name, R.string.app_name)
        {
            public void onDrawerClosed(View view)
            {
                getActionBar().setTitle(mTitle);
                invalidateOptionsMenu();
            }

            public void onDrawerOpened(View drawerView)
            {
                getActionBar().setTitle(mDrawerTitle);
                invalidateOptionsMenu();
            }
        };

        mDrawerLayout.setDrawerListener(mDrawerToggle);

        if(getIntent().hasExtra(EXTRA_NAV_ITEM)){
            MainNavItem navItem = MainNavItem.values()
                    [getIntent().getIntExtra(EXTRA_NAV_ITEM,
                    MainNavItem.STATISTICS.ordinal())];
            displayNavFragment(navItem);
        }
        else if(savedInstanceState != null){
            mCurrentNavItem = MainNavItem.values()
                    [savedInstanceState.getInt(STATE_CURRENT_NAV)];
            setCurrentNavItem(mCurrentNavItem);
        }
        else{
            displayNavFragment(MainNavItem.STATISTICS);
        }
    }

    @TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
    private void enableHomeButtonIfRequired()
    {
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH){
            getActionBar().setHomeButtonEnabled(true);
        }
    }

    @Override
    public void setTitle(CharSequence title)
    {
        mTitle = title;
        getActionBar().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
    protected void onSaveInstanceState(Bundle outState)
    {
        super.onSaveInstanceState(outState);
        outState.putInt(STATE_CURRENT_NAV, mCurrentNavItem.ordinal());
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu)
    {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    /*
    @Override
    public boolean onPrepareOptionsMenu(Menu menu)
    {
        // if nav drawer is opened, hide the action items
        boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
        menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
        return super.onPrepareOptionsMenu(menu);
    }
    */

    @Override
    public boolean onOptionsItemSelected(MenuItem item)
    {
        if(mDrawerToggle.onOptionsItemSelected(item)){
            return true;
        }
        switch(item.getItemId()){
            case R.id.menu_search2:
                displayNavFragment(MainNavItem.SEARCH);
                return true;

            default:
                return super.onOptionsItemSelected(item);
        }
    }

    private void displayNavFragment(MainNavItem navItem)
    {
        if(navItem == mCurrentNavItem){
            return;
        }
        Fragment fragment = Fragment.instantiate(this,
                navItem.getFragClass().getName());
        if(fragment != null){
            getSupportFragmentManager().beginTransaction()
                    .replace(R.id.main, fragment)
                    .commit();
            setCurrentNavItem(navItem);
        }
    }

    private void setCurrentNavItem(MainNavItem navItem)
    {
        int position = navItem.ordinal();
        // If navItem is in DrawerAdapter
        if(position >= 0 && position < mDrawerAdapter.getCount()){
            mDrawerList.setItemChecked(position, true);
        }
        else{
            // navItem not in DrawerAdapter, de-select current item
            if(mCurrentNavItem != null){
                mDrawerList.setItemChecked(mCurrentNavItem.ordinal(), false);
            }
        }
        mDrawerLayout.closeDrawer(mDrawerList);
        setTitle(navItem.getTitleResId());
        mCurrentNavItem = navItem;
    }
}

Answer 1

看起来像这里

searchView.setIconified(false);

“searchView”尚未正确初始化，因为在您创建该字段之前，没有为其分配任何 View :

SearchView searchView;  

因此在您的 onCreateView 中，您应该在调用 searchView 的方法之前首先通过 Id 找到您的 View :

searchView = (SearchView) findViewById(R.id.the_view_id_here);