SearchActivity.java

package com.alorma.github.ui.activity;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.text.TextUtils;
import android.view.Menu;
import android.view.MenuItem;
import android.view.inputmethod.EditorInfo;
import android.widget.EditText;
import com.alorma.github.R;
import com.alorma.github.ui.activity.base.BackActivity;
import com.alorma.github.ui.adapter.viewpager.NavigationPagerAdapter;
import com.alorma.github.ui.fragment.search.SearchReposFragment;
import com.alorma.github.ui.fragment.search.SearchUsersFragment;
import com.alorma.github.utils.AttributesUtils;
import com.jakewharton.rxbinding.widget.RxTextView;
import com.mikepenz.iconics.IconicsDrawable;
import com.mikepenz.octicons_typeface_library.Octicons;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;
import rx.Subscriber;
import rx.Subscription;
import rx.android.schedulers.AndroidSchedulers;

public class SearchActivity extends BackActivity {

  private EditText searchView;
  private SearchReposFragment searchReposFragment;
  private SearchUsersFragment searchUsersFragment;
  private String lastQuery;
  private Subscription subscription;

  public static Intent launchIntent(Context context) {
    return new Intent(context, SearchActivity.class);
  }

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

    setTitle("");

    searchView = (EditText) findViewById(R.id.searchView);

    final TabLayout tabLayout = (TabLayout) findViewById(R.id.tabStrip);

    ViewPager viewPager = (ViewPager) findViewById(R.id.pager);

    searchReposFragment = SearchReposFragment.newInstance(null);
    searchUsersFragment = SearchUsersFragment.newInstance(null);

    List<Fragment> listFragments = new ArrayList<>();
    listFragments.add(searchReposFragment);
    listFragments.add(searchUsersFragment);

    if (viewPager != null && tabLayout != null) {
      viewPager.setAdapter(new NavigationPagerAdapter(getSupportFragmentManager(), getResources(), listFragments));
      tabLayout.setupWithViewPager(viewPager);
    }

    searchView.setOnEditorActionListener((textView, actionId, keyEvent) -> {
      if (textView.length() > 0) {
        switch (actionId) {
          case EditorInfo.IME_ACTION_DONE:
          case EditorInfo.IME_ACTION_SEARCH:
          case EditorInfo.IME_ACTION_SEND:
          case EditorInfo.IME_ACTION_NEXT:
          case EditorInfo.IME_ACTION_GO:
            if (textView.getText() != null) {
              search(textView.getText().toString());
            }
            break;
        }
      }
      return false;
    });

    subscription = RxTextView.textChanges(searchView)
        .filter(s -> s.length() >= 3)
        .throttleLast(100, TimeUnit.MILLISECONDS)
        .debounce(250, TimeUnit.MILLISECONDS)
        .subscribeOn(AndroidSchedulers.mainThread())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe(new Subscriber<CharSequence>() {
          @Override
          public void onCompleted() {

          }

          @Override
          public void onError(Throwable e) {

          }

          @Override
          public void onNext(CharSequence charSequence) {
            search(charSequence.toString());
          }
        });
  }

  @Override
  protected void onDestroy() {
    subscription.unsubscribe();
    super.onDestroy();
  }

  public boolean onCreateOptionsMenu(Menu menu) {
    super.onCreateOptionsMenu(menu);

    if (getToolbar() != null) {
      getToolbar().inflateMenu(R.menu.search_activity_menu);

      MenuItem searchItem = menu.findItem(R.id.action_search);

      IconicsDrawable searchIcon =
          new IconicsDrawable(getApplicationContext(), Octicons.Icon.oct_search).actionBar().color(AttributesUtils.getIconsColor(this));

      searchItem.setIcon(searchIcon);
    }

    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId() == R.id.action_search) {
      if (searchView != null && searchView.getText() != null) {
        String searchText = searchView.getText().toString();
        if (!TextUtils.isEmpty(searchText)) {
          if (!searchText.equals(lastQuery)) {
            lastQuery = searchText;
            search(searchText);
          }
        }
      }
    }
    return super.onOptionsItemSelected(item);
  }

  private void search(String query) {
    if (searchReposFragment != null) {
      searchReposFragment.setQuery(query);
    }
    if (searchUsersFragment != null) {
      searchUsersFragment.setQuery(query);
    }
  }

  @Override
  public void onBackPressed() {
    finish();
  }

  @Override
  protected int getAppLightTheme() {
    return R.style.AppTheme_Search;
  }

  @Override
  protected int getAppDarkTheme() {
    return R.style.AppTheme_Dark_Search;
  }
}