How do I open the SearchView programmatically?

问题:

There is this widget for the ActionBar which called 'SearchView'. When it's not in use, it looks like this:

And when it's in use, it looks like this:

I want (programmatically of course) to open the searchview (make it "in use").

I tried several functions such as:

SearchView searchView = (SearchView) menu.findItem(R.id.menu_search).getActionView();
    searchView.setOnQueryTextListener(this);

    searchView.performClick();
    searchView.requestFocus();

But none of those worked...

The SearchView in the XML:

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

回答1:

Expand the SearchView with

searchView.setIconified(false);

and collapse it with

searchView.setIconified(true);

You need to change the value of android:showAsAction from ifRoom|collapseActionView to always. The SearchView's attribute android:iconifiedByDefault should be true, which is the default value, otherwise the user can not collapse the SearchView after it was expanded programmatically.

回答2:

Try to call expandActionView() on MenuItem, not onActionViewExpanded() on ActionView.

It works for me.

MenuItem searchMenuItem = menu.findItem(R.id.menu_search);
searchView = (SearchView) searchMenuItem.getActionView();
searchMenuItem.expandActionView();

回答3:

If you want to use support library only when necessary, do this

    MenuItem searchMenuItem = menu.findItem(R.id.action_search);
    if (Utils.hasIceCreamSandwich())
        searchMenuItem.expandActionView();
    else MenuItemCompat.expandActionView(searchMenuItem);

else simply do this

    MenuItem searchMenuItem = menu.findItem(R.id.action_search);
    MenuItemCompat.expandActionView(searchMenuItem);

回答4:

I know this is late but

Try calling expandActionView() to open it and collapseActionView() to close it. You can call requestFocus() on the actual Action View via getActionView() to give the search view focus :)