Java tutorial
/* * Copyright 2015 Oti Rowland * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ package com.rowland.moviesquire.ui.activities; import android.app.SearchManager; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.support.v4.view.MenuItemCompat; import android.support.v7.widget.SearchView; import android.view.Menu; import android.view.MenuItem; import com.rowland.moviesquire.R; import com.rowland.moviesquire.ui.fragments.DetailFragment; import com.rowland.moviesquire.ui.fragments.MainFragment; import butterknife.ButterKnife; public class MainActivity extends BaseToolBarActivity implements MainFragment.IMovieSelectionCallBack { // Logging Identifier for class private final String LOG_TAG = MainActivity.class.getSimpleName(); // The Movie POSITION Identifier Key public static final String SELECTED_POSITION_KEY = "selected_position_key"; // The Movie ID Identifier Key public static final String SELECTED_MOVIE_KEY = "selected_movie_key"; // The selected grid position private int mSelectedPosition = -1; // The selected movie remote id private long mMovieId = -1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Inflate the layout setContentView(R.layout.activity_main); // Inject all the views ButterKnife.bind(this); // Check that the activity is using the layout with the fragment_container id if (findViewById(R.id.detail_container) != null) { // The detail container view will be present only in the large-screen layouts // (res/layout-sw600dp). If this view is present, then the activity should be // in two-pane mode. toggleShowTwoPane(true); // If we're being restored from a previous state, don't need to do anything // and should return or else we could end up with overlapping fragments. if (savedInstanceState != null) { // Recover assets mSelectedPosition = savedInstanceState.getInt(SELECTED_POSITION_KEY); mMovieId = savedInstanceState.getLong(SELECTED_MOVIE_KEY); // Set positions as selected onMovieSelected(mMovieId, mSelectedPosition); return; } else { // Get Facebook Stetho doing its job initStetho(); // In two-pane mode, show the detail view in this activity by // adding or replacing the detail fragment using a fragment transaction. showDetailFragment(null); } } else { toggleShowTwoPane(false); } if (savedInstanceState == null) { showMainFragment(null); } } // Insert the DetailFragment private void showDetailFragment(Bundle args) { // Acquire the Fragment manger FragmentManager fm = getSupportFragmentManager(); // Begin the transaction FragmentTransaction ft = fm.beginTransaction(); // Create new fragment DetailFragment detailFragment = DetailFragment.newInstance(args); // Prefer replace() over add() see <a>https://github.com/RowlandOti/PopularMovies/issues/1</a> ft.replace(R.id.detail_container, detailFragment); ft.commit(); } // Insert the MainFragment private void showMainFragment(Bundle args) { // Acquire the Fragment manger FragmentManager fm = getSupportFragmentManager(); // Begin the transaction FragmentTransaction ft = fm.beginTransaction(); // Create new fragment MainFragment mainFragment = MainFragment.newInstance(args); // Prefer replace() over add() see <a>https://github.com/RowlandOti/PopularMovies/issues/1</a> ft.replace(R.id.fragment_container, mainFragment); ft.commit(); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); // Acquire the search manager SearchManager SManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE); // Acquire the relevant search menu item MenuItem searchMenuItem = menu.findItem(R.id.action_search); // Acquire the search view SearchView mSearchView = (SearchView) MenuItemCompat.getActionView(searchMenuItem); // Set the Search activity class mSearchView.setSearchableInfo( SManager.getSearchableInfo(new ComponentName(getApplicationContext(), SearchActivity.class))); // Set if should use an icon mSearchView.setIconifiedByDefault(true); // return whether menu was succesfully created return super.onCreateOptionsMenu(menu); } // Save any important data for recovery @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putInt(SELECTED_POSITION_KEY, mSelectedPosition); outState.putLong(SELECTED_MOVIE_KEY, mMovieId); } @Override public void onMovieSelected(long movieId, int selectedPosition) { // Store this position mSelectedPosition = selectedPosition; // Store remote movie id mMovieId = movieId; // Check for two-pane if (mIsTwoPane) { // Create a Bundle object Bundle args = new Bundle(); // Set the arguments args.putLong(DetailFragment.MOVIE_KEY, movieId); // Show the DetailFragment showDetailFragment(args); } else { // Create an Intent object Intent intent = new Intent(this, DetailActivity.class); // Set extras - pass MOVIE_KEY intent.putExtra(DetailFragment.MOVIE_KEY, movieId); // Set extras - pass MOVIE_KEY intent.putExtra(DetailFragment.MOVIE_POSITION_KEY, selectedPosition); // Start the DetailActivity startActivity(intent); } } }