Tarelochkin

InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
inputMethodManager.hideSoftInputFromWindow(searchView.getWindowToken(), 0);

Tarelochkin

public class MainActivity extends AppCompatActivity {

    String mQuery;
  ...
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.options_menu, menu);

        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
        MenuItem searchItem = menu.findItem(R.id.search);

Tarelochkin

if (!TextUtils.isEmpty(mQuery)) {
            searchItem.expandActionView();
            searchView.setQuery(mQuery, false);
            searchView.clearFocus();
        }

Tarelochkin

MenuItemCompat.setOnActionExpandListener(searchItem, new MenuItemCompat.OnActionExpandListener() {
            @Override
            public boolean onMenuItemActionExpand(MenuItem item) {
              //your code
                return true; //or false in case you don't want to expand
            }

            @Override
            //Control the behaviour of the {@link SearchView}'s own back button
            public boolean onMenuItemActionCollapse(MenuItem item) {

Tarelochkin

public final class QueryUtils {

    /**
     * For every known problem with fetching data there is an error code created
     * which is then used to provide a user with an idea of what's gone wrong
     */
    static int errorCode;

    public QueryUtils() {

Tarelochkin

private static List<Book> getBooksInfoFromJson(String jsonStr) {
        List<Book> booksList = new ArrayList<>();
        if (jsonStr == null || jsonStr.equals("")) {
            return booksList;
        }

        try {
            JSONObject rootObj = new JSONObject(jsonStr);
            JSONArray itemsArray = rootObj.getJSONArray("items");

Tarelochkin

public class KeepListviewPosition extends AppCompatActivity implements LoaderManager.LoaderCallbacks<List<Article>> {

    private ListView newsView;
    private static NewsAdapter mAdapter;

    /**
     * Parcelable variable to keep the position in the listview
     */
    private Parcelable mListState;

Tarelochkin

            MyAsynkTask task = new MyAsynkTask();
            // Create multiple threads.
            task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, arg1);

Tarelochkin

final class BitmapUtils {

    /**
     * Define a size of the memory available for an LruCache object.
     */
    private static int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
    private static int cacheSize = maxMemory / 8;

    /**
     * Create the LruCache object and define its size.

Tarelochkin

Animation fadeInAnimation = AnimationUtils.loadAnimation(this, R.anim.fadein);
ImageView imageView = (ImageView) findViewById(R.id.imageViewId);
imageView.startAnimation(fadeInAnimation);