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- package info.androidhive.navigationdrawer.activity;
- import android.content.Intent;
- import android.os.Bundle;
- import android.os.Handler;
- import android.support.design.widget.CoordinatorLayout;
- import android.support.design.widget.FloatingActionButton;
- import android.support.design.widget.NavigationView;
- import android.support.design.widget.Snackbar;
- import android.support.v4.app.Fragment;
- import android.support.v4.app.FragmentTransaction;
- import android.support.v4.view.GravityCompat;
- import android.support.v4.widget.DrawerLayout;
- import android.support.v7.app.ActionBarDrawerToggle;
- import android.support.v7.app.AppCompatActivity;
- import android.support.v7.widget.Toolbar;
- import android.view.Menu;
- import android.view.MenuItem;
- import android.view.View;
- import android.widget.ImageView;
- import android.widget.TextView;
- import android.widget.Toast;
- import com.bumptech.glide.Glide;
- import com.bumptech.glide.load.engine.DiskCacheStrategy;
- import info.androidhive.navigationdrawer.R;
- import info.androidhive.navigationdrawer.fragment.HomeFragment;
- import info.androidhive.navigationdrawer.fragment.MoviesFragment;
- import info.androidhive.navigationdrawer.fragment.NotificationsFragment;
- import info.androidhive.navigationdrawer.fragment.PhotosFragment;
- import info.androidhive.navigationdrawer.fragment.SettingsFragment;
- import info.androidhive.navigationdrawer.other.CircleTransform;
- public class MainActivity extends AppCompatActivity {
- private NavigationView navigationView;
- private DrawerLayout drawer;
- private CoordinatorLayout coordinatorLayout;
- private View navHeader;
- private ImageView imgNavHeaderBg, imgProfile;
- private TextView txtName, txtWebsite;
- private Toolbar toolbar;
- private FloatingActionButton fab;
- // urls to load navigation header background image
- // and profile image
- private static final String urlNavHeaderBg = "http://api.androidhive.info/images/nav-menu-header-bg.jpg";
- private static final String urlProfileImg = "https://lh3.googleusercontent.com/eCtE_G34M9ygdkmOpYvCag1vBARCmZwnVS6rS5t4JLzJ6QgQSBquM0nuTsCpLhYbKljoyS-txg";
- // index to identify current nav menu item
- public static int navItemIndex = 0;
- // tags used to attach the fragments
- private static final String TAG_HOME = "home";
- private static final String TAG_PHOTOS = "photos";
- private static final String TAG_MOVIES = "movies";
- private static final String TAG_NOTIFICATIONS = "notifications";
- private static final String TAG_SETTINGS = "settings";
- public static String CURRENT_TAG = TAG_HOME;
- // toolbar titles respected to selected nav menu item
- private String[] activityTitles;
- // flag to load home fragment when user presses back key
- private boolean shouldLoadHomeFragOnBackPress = true;
- private Handler mHandler;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- toolbar = (Toolbar) findViewById(R.id.toolbar);
- setSupportActionBar(toolbar);
- coordinatorLayout = (CoordinatorLayout) findViewById(R.id.main_content);
- mHandler = new Handler();
- drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
- navigationView = (NavigationView) findViewById(R.id.nav_view);
- fab = (FloatingActionButton) findViewById(R.id.fab);
- // Navigation view header
- navHeader = navigationView.getHeaderView(0);
- txtName = (TextView) navHeader.findViewById(R.id.name);
- txtWebsite = (TextView) navHeader.findViewById(R.id.website);
- imgNavHeaderBg = (ImageView) navHeader.findViewById(R.id.img_header_bg);
- imgProfile = (ImageView) navHeader.findViewById(R.id.img_profile);
- // load toolbar titles from string resources
- activityTitles = getResources().getStringArray(R.array.nav_item_activity_titles);
- fab.setOnClickListener(new View.OnClickListener() {
- @Override
- public void onClick(View view) {
- Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
- .setAction("Action", null).show();
- }
- });
- // load nav menu header data
- loadNavHeader();
- // initializing navigation menu
- setUpNavigationView();
- if (savedInstanceState == null) {
- navItemIndex = 0;
- CURRENT_TAG = TAG_HOME;
- loadHomeFragment();
- }
- }
- /***
- * Load navigation menu header information
- * like background image, profile image
- * name, website, notifications action view (dot)
- */
- private void loadNavHeader() {
- // name, website
- txtName.setText("Ravi Tamada");
- txtWebsite.setText("www.androidhive.info");
- // loading header background image
- Glide.with(this).load(urlNavHeaderBg)
- .crossFade()
- .diskCacheStrategy(DiskCacheStrategy.ALL)
- .into(imgNavHeaderBg);
- // Loading profile image
- Glide.with(this).load(urlProfileImg)
- .crossFade()
- .thumbnail(0.5f)
- .bitmapTransform(new CircleTransform(this))
- .diskCacheStrategy(DiskCacheStrategy.ALL)
- .into(imgProfile);
- // showing dot next to notifications label
- navigationView.getMenu().getItem(3).setActionView(R.layout.menu_dot);
- }
- /***
- * Returns respected fragment that user
- * selected from navigation menu
- */
- private void loadHomeFragment() {
- // selecting appropriate nav menu item
- selectNavMenu();
- // set toolbar title
- setToolbarTitle();
- // if user select the current navigation menu again, don't do anything
- // just close the navigation drawer
- if (getSupportFragmentManager().findFragmentByTag(CURRENT_TAG) != null) {
- drawer.closeDrawers();
- // show or hide the fab button
- toggleFab();
- return;
- }
- // Sometimes, when fragment has huge data, screen seems hanging
- // when switching between navigation menus
- // So using runnable, the fragment is loaded with cross fade effect
- // This effect can be seen in GMail app
- Runnable mPendingRunnable = new Runnable() {
- @Override
- public void run() {
- // update the main content by replacing fragments
- Fragment fragment = getHomeFragment();
- FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
- fragmentTransaction.setCustomAnimations(android.R.anim.fade_in,
- android.R.anim.fade_out);
- fragmentTransaction.replace(R.id.frame, fragment, CURRENT_TAG);
- fragmentTransaction.commitAllowingStateLoss();
- }
- };
- // If mPendingRunnable is not null, then add to the message queue
- if (mPendingRunnable != null) {
- mHandler.post(mPendingRunnable);
- }
- // show or hide the fab button
- toggleFab();
- //Closing drawer on item click
- drawer.closeDrawers();
- // refresh toolbar menu
- invalidateOptionsMenu();
- }
- private Fragment getHomeFragment() {
- switch (navItemIndex) {
- case 0:
- // home
- HomeFragment homeFragment = new HomeFragment();
- return homeFragment;
- case 1:
- // photos
- PhotosFragment photosFragment = new PhotosFragment();
- return photosFragment;
- case 2:
- // movies fragment
- MoviesFragment moviesFragment = new MoviesFragment();
- return moviesFragment;
- case 3:
- // notifications fragment
- NotificationsFragment notificationsFragment = new NotificationsFragment();
- return notificationsFragment;
- case 4:
- // settings fragment
- SettingsFragment settingsFragment = new SettingsFragment();
- return settingsFragment;
- default:
- return new HomeFragment();
- }
- }
- private void setToolbarTitle() {
- getSupportActionBar().setTitle(activityTitles[navItemIndex]);
- }
- private void selectNavMenu() {
- navigationView.getMenu().getItem(navItemIndex).setChecked(true);
- }
- private void setUpNavigationView() {
- //Setting Navigation View Item Selected Listener to handle the item click of the navigation menu
- navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
- // This method will trigger on item Click of navigation menu
- @Override
- public boolean onNavigationItemSelected(MenuItem menuItem) {
- //Check to see which item was being clicked and perform appropriate action
- switch (menuItem.getItemId()) {
- //Replacing the main content with ContentFragment Which is our Inbox View;
- case R.id.home:
- navItemIndex = 0;
- CURRENT_TAG = TAG_HOME;
- break;
- case R.id.nav_photos:
- navItemIndex = 1;
- CURRENT_TAG = TAG_PHOTOS;
- break;
- case R.id.nav_movies:
- navItemIndex = 2;
- CURRENT_TAG = TAG_MOVIES;
- break;
- case R.id.nav_notifications:
- navItemIndex = 3;
- CURRENT_TAG = TAG_NOTIFICATIONS;
- break;
- case R.id.nav_settings:
- navItemIndex = 4;
- CURRENT_TAG = TAG_SETTINGS;
- break;
- case R.id.nav_about_us:
- // launch new intent instead of loading fragment
- startActivity(new Intent(MainActivity.this, AboutUsActivity.class));
- drawer.closeDrawers();
- return true;
- case R.id.nav_privacy_policy:
- // launch new intent instead of loading fragment
- startActivity(new Intent(MainActivity.this, PrivacyPolicyActivity.class));
- drawer.closeDrawers();
- return true;
- default:
- navItemIndex = 0;
- }
- //Checking if the item is in checked state or not, if not make it in checked state
- if (menuItem.isChecked()) {
- menuItem.setChecked(false);
- } else {
- menuItem.setChecked(true);
- }
- menuItem.setChecked(true);
- loadHomeFragment();
- return true;
- }
- });
- ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.openDrawer, R.string.closeDrawer) {
- @Override
- public void onDrawerClosed(View drawerView) {
- // Code here will be triggered once the drawer closes as we dont want anything to happen so we leave this blank
- super.onDrawerClosed(drawerView);
- }
- @Override
- public void onDrawerOpened(View drawerView) {
- // Code here will be triggered once the drawer open as we dont want anything to happen so we leave this blank
- super.onDrawerOpened(drawerView);
- }
- };
- //Setting the actionbarToggle to drawer layout
- drawer.setDrawerListener(actionBarDrawerToggle);
- //calling sync state is necessary or else your hamburger icon wont show up
- actionBarDrawerToggle.syncState();
- }
- @Override
- public void onBackPressed() {
- if (drawer.isDrawerOpen(GravityCompat.START)) {
- drawer.closeDrawers();
- return;
- }
- // This code loads home fragment when back key is pressed
- // when user is in other fragment than home
- if (shouldLoadHomeFragOnBackPress) {
- // checking if user is on other navigation menu
- // rather than home
- if (navItemIndex != 0) {
- navItemIndex = 0;
- CURRENT_TAG = TAG_HOME;
- loadHomeFragment();
- return;
- }
- }
- super.onBackPressed();
- }
- @Override
- public boolean onCreateOptionsMenu(Menu menu) {
- // Inflate the menu; this adds items to the action bar if it is present.
- // show menu only when home fragment is selected
- if (navItemIndex == 0) {
- getMenuInflater().inflate(R.menu.main, menu);
- }
- // when fragment is notifications, load the menu created for notifications
- if (navItemIndex == 3) {
- getMenuInflater().inflate(R.menu.notifications, menu);
- }
- return true;
- }
- @Override
- public boolean onOptionsItemSelected(MenuItem item) {
- // Handle action bar item clicks here. The action bar will
- // automatically handle clicks on the Home/Up button, so long
- // as you specify a parent activity in AndroidManifest.xml.
- int id = item.getItemId();
- //noinspection SimplifiableIfStatement
- if (id == R.id.action_logout) {
- Toast.makeText(getApplicationContext(), "Logout user!", Toast.LENGTH_LONG).show();
- return true;
- }
- // user is in notifications fragment
- // and selected 'Mark all as Read'
- if (id == R.id.action_mark_all_read) {
- Toast.makeText(getApplicationContext(), "All notifications marked as read!", Toast.LENGTH_LONG).show();
- }
- // user is in notifications fragment
- // and selected 'Clear All'
- if (id == R.id.action_clear_notifications) {
- Toast.makeText(getApplicationContext(), "Clear all notifications!", Toast.LENGTH_LONG).show();
- }
- return super.onOptionsItemSelected(item);
- }
- // show or hide the fab
- private void toggleFab() {
- if (navItemIndex == 0)
- fab.show();
- else
- fab.hide();
- }
- }
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