如何以编程方式关闭SearchView？

我目前SearchView在应用程序的操作栏中有一个。当我单击搜索图标时，将SearchView展开并按预期弹出键盘。单击SearchView框中的“ X”关闭SearchView按预期的方式。但是，当SearchView激活并按下“后退”按钮时，我的应用程序退出。这是正确的行为，但是我现在要做的是捕获后退按钮的按下，并SearchView在SearchView可见时关闭它（而不是我的应用程序）。有没有办法SearchView OnCloseListener()在按下后退按钮时以编程方式调用？例如，如下所示：

// On a back button press, if we are currently searching,
// close the SearchView. Otherwise, invoke normal back button
// behavior.
public boolean onKeyDown(int keyCode, KeyEvent event) {
   if (keyCode == KeyEvent.KEYCODE_BACK) {
        if (isSearchViewVisible) {
            SearchView searchView = (SearchView) menu.findItem(R.id.searchBox)
               .getActionView();

            // This method does not exist
            searchView.invokeClose();
            return true;
        }
    }
    return super.onKeyDown(keyCode, event);
}

基于@MarcinOrlowski答案，您还可以使用：

@Override
public void onBackPressed() {
    if (!searchView.isIconified()) {
        searchView.setIconified(true);
    } else {
        super.onBackPressed();
    }
}

Use

searchView.setIconified(true)

I also used MenuItemCompat.collapseActionView

MenuItemCompat.collapseActionView(menuItem)

There is a simple way to do this:

@Override
public void onBackPressed() {
    if (!searchView.isIconified()) {
        searchView.onActionViewCollapsed();
    } else {
        super.onBackPressed();
    }
}

or use:

myToolBar.collapseActionView();

This will make the searchView to collapse before you press the back then the back action will be called.

Both solutions will work.

this is the only thing that does it for me:

  toolbar.collapseActionView();

To intercept BACK button override onBackPressed() (see docs)

@Override
public void onBackPressed() {

    if (isSearchViewVisible) {
        SearchView searchView = (SearchView) menu.findItem(R.id.searchBox)
           .getActionView();

        // This method does not exist
        searchView.invokeClose();
    } else {
        super.onBackPressed();
    }
}

EDIT:

Docs say:

If necessary, you can expand or collapse the action view in your own code by calling expandActionView() and collapseActionView() on the MenuItem.

if you have input on your searchView

mSearchView.setIconified(true);

will only clear the text.

The correct method to close a searchView is

mSearchView.onActionViewCollapsed();

Use:

searchView.setIconified(true);

I prefer !searchView.isIconified() over if(isSearchViewVisible) inside the onBackPressed() method as option 2 does not work when you have fragments added in your fragmentmanager's backstack that you would like to show when the back button is pressed.

No need to use onBackPressed() method for this!! I found the solution, do only as I mentioned below so that the SearchView itself handle the on back button press event.

Inside your onCreateOptionsMenu() method,

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    MenuItem menuItem = menu.findItem(R.id.action_search);
    SearchView searchview = (SearchView) menuItem.getActionView();
    searchview.setIconifiedByDefault(true);
    searchview.setQueryHint("Enter your keyword");
    searchview.setOnQueryTextListener(this); 
    super.onCreateOptionsMenu(menu, inflater);
}

In your menu.xml add showAsAction attribute and set its values as "always|collapseActionView"

<item
    android:id="@+id/action_search_item"
    android:title="Search"
    android:icon="@drawable/ic_search_logo"
    app:showAsAction="always|collapseActionView"
    app:actionViewClass="android.support.v7.widget.SearchView"/>

And you're ready to go ;)

P.S. - I was searching for a solution from a long time and now I found one, hope it helps you all.

My way:

1. Create CustomSearchView class

    public class CustomSearchView extends SearchView{
        public CustomSearchView(final Context context) {
            super(context);
            this.setIconifiedByDefault(true);
        }

        @Override
        public boolean dispatchKeyEventPreIme(KeyEvent event) {
            if (event.getKeyCode() == KeyEvent.KEYCODE_BACK && 
                event.getAction() == KeyEvent.ACTION_UP) {
                this.onActionViewCollapsed();
            }
            return super.dispatchKeyEventPreIme(event);
        }
    }

2. Add actionViewClass

    <item
        android:id="@+id/menu_search"
        android:title="@string/menu_search"
        android:icon="@drawable/ic_search"
        android:showAsAction="collapseActionView|ifRoom"
        android:actionViewClass="com.myapp.CustomSearchView"/>

3. Create CustomSearchView into onCreateOptionsMenu

    CustomSearchView searchView = (CustomSearchView)menu.findItem(R.id.menu_search).getActionView();

If you are not use any function in onBackPressed() method ,remove it from your Activity.So that the SearchView itself handle the onBackPress event.

I am using SearchView as

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    MenuItem searchItem = menu.findItem(R.id.action_search);
    SearchView searchview = (SearchView) MenuItemCompat.getActionView(searchItem);
    searchview.setIconifiedByDefault(true);
    searchview.setOnQueryTextListener(this);
    searchview.setSubmitButtonEnabled(true);  
    searchview.setQueryHint("Search Here"); 
    super.onCreateOptionsMenu(menu, inflater);
}

and my menu.xml as follows

<item
    android:id="@+id/action_search"
    android:icon="@drawable/search_tool"
    android:orderInCategory="1"
    android:title="Search" 
    app:actionViewClass="android.support.v7.widget.SearchView"
    app:showAsAction="always|collapseActionView"/>

Also you can use collapseActionView. It automatically handle back button, collapsing SearchView

<item
      android:id="@+id/action_search"
      android:icon="@drawable/ic_magnify"
      android:title="@string/action_title_search"
      app:actionViewClass="android.support.v7.widget.SearchView"
      app:showAsAction="ifRoom|collapseActionView" />

The following worked for me. I am trying to close search-view from Fragment in Jetpack NavigationView when a user clicks the back button -

requireActivity().getOnBackPressedDispatcher().addCallback(getViewLifecycleOwner(), new OnBackPressedCallback(true) { @Override public void handleOnBackPressed() {

        try {
            DashboardActivity activity = (DashboardActivity) getActivity();
            if (activity!=null) {
                if (!activity.mSearchView.isIconified()) {
                    activity.mSearchView.setQuery("",false);
                    activity.mSearchView.setIconified(true);
                } else {
                    NavController navController = Navigation.findNavController(activity, R.id.nav_host_fragment);
                    navController.popBackStack();
                }
            }

        }catch (Exception e){
            e.printStackTrace();
        }
    }
});