How can I get back button working when searchview in Android

Question

I've been searching for more than 4 hours all over the internet how to get the back button working properly when searchview is opened but I just can't achieve it.

Here is my searchview.

    searchview  = (SearchView) findViewById(R.id.searchView);
        searchview.setOnClickListener(this);
  @Override
    public void onClick(View v) {
        if (v.getId() == R.id.searchView){

           //Cursor cursor = manager.obtenerIDColumnaServicio(searchview.getQuery().toString());
            adapterOfDataBase.changeCursor(cursor);
        }
    }

Here is the xml:

   <SearchView
                    android:layout_width="match_parent"
                    android:layout_height="63dp"
                    android:id="@+id/searchView"
                    android:iconifiedByDefault="true"
                    android:backgroundTint="#ff000000"
                    android:layout_marginRight="0dp" />

All this withing a huge class using SQL and some methods to insert, delete, etc etc tables & entries. So my problem is that everytime I click on the searchview it expands in order to write the text, everyting ok, but when I push back button from android nothing happens.

I tried 2 options but none worked, if you could just help me....

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) { //MEJORAR ESTO
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        searchview.onActionViewCollapsed();
        return true;
    }
    return super.onKeyDown(keyCode, event);
}
//None of this 2 methods are working. I tried them separately
@Override
public void onBackPressed(){
    if (!this.searchview.isIconified()) {
        this.searchview.setIconified(true);
    } else {
        super.onBackPressed();
    }
}

Answer 1

When searchView is open and back button is pressed you expect to see the searchView closed (aka setIconified(true)) This is a standar behaviour as per google apps searchview implementation.

So all you need to do is something like that

    mSearchView.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() {
        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            if (!hasFocus) {
                mSearchView.setIconified(true);
            }
        }
    });

Answer 2

In my case just adding :

setFocusableInTouchMode(true);

to the SearchView works as a work around for this issue,

Hope it helps,