Java tutorial
package nhannt.musicplayer.ui.home; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.pm.PackageManager; import android.os.Bundle; import android.os.Handler; import android.support.annotation.NonNull; import android.support.design.widget.NavigationView; import android.support.v4.app.ActivityCompat; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentTransaction; import android.support.v4.content.ContextCompat; import android.support.v4.content.LocalBroadcastManager; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.ActionBar; import android.support.v7.app.ActionBarDrawerToggle; import android.support.v7.widget.CardView; import android.support.v7.widget.Toolbar; import android.view.MenuItem; import android.view.View; import android.widget.ImageView; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.Toast; import com.bumptech.glide.Glide; import java.util.ArrayList; import butterknife.BindView; import butterknife.ButterKnife; import de.hdodenhof.circleimageview.CircleImageView; import nhannt.musicplayer.R; import nhannt.musicplayer.adapter.SearchAdapter; import nhannt.musicplayer.interfaces.DrawerLayoutContainer; import nhannt.musicplayer.interfaces.IMusicServiceConnection; import nhannt.musicplayer.interfaces.RecyclerItemClickListener; import nhannt.musicplayer.objectmodel.Album; import nhannt.musicplayer.objectmodel.Artist; import nhannt.musicplayer.objectmodel.Song; import nhannt.musicplayer.service.MusicService; import nhannt.musicplayer.ui.albumdetail.FragmentAlbumDetail; import nhannt.musicplayer.ui.artistdetail.FragmentArtistDetail; import nhannt.musicplayer.ui.base.BaseActivity; import nhannt.musicplayer.ui.custom.MaterialSearchView; import nhannt.musicplayer.ui.itemlist.FragmentMain; import nhannt.musicplayer.ui.playback.PlayBackActivity; import nhannt.musicplayer.ui.playingqueue.FragmentPlayingQueue; import nhannt.musicplayer.ui.playlist.FragmentPlaylist; import nhannt.musicplayer.utils.Common; import nhannt.musicplayer.utils.Navigator; import static android.Manifest.permission.READ_EXTERNAL_STORAGE; import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE; public class HomeActivity extends BaseActivity implements IMusicServiceConnection, IHomeView, DrawerLayoutContainer, RecyclerItemClickListener { private static final int PERMISSION_REQUEST_CODE = 200; public static final String ACTION_OPEN_ALBUM_DETAIL = "open_album_detail"; public static final String ACTION_OPEN_ARTIST_DETAIL = "open_artist_detail"; public static final String KEY_ALBUM_DETAIL = "album_detail"; public static final String KEY_ARTIST_DETAIL = "artist_detail"; @BindView(R.id.drawer_main) protected DrawerLayout drawerLayout; @BindView(R.id.current_play_bar) protected CardView currentPlayBar; @BindView(R.id.btn_toggle_play_current_bar) protected ImageView btnTogglePlay; @BindView(R.id.iv_cover_current_playing_bar) protected CircleImageView ivAlbumCurrentBar; @BindView(R.id.tv_artist_current_bar) protected TextView tvArtistCurrentBar; @BindView(R.id.tv_song_title_current_bar) protected TextView tvSongTitleCurrentBar; @BindView(R.id.seek_bar_current_bar) protected ProgressBar seekBar; @BindView(R.id.nav_view) protected NavigationView navigationView; private MusicService mService; private HomePresenter mPresenter; private TextView tvSongTitleHeader; private TextView tvArtistHeader; private ImageView albumCoverHeader; public static int navItemIndex = 0; private static final String TAG_LIBRARY = FragmentMain.TAG; private static final String TAG_PLAYLISTS = FragmentPlaylist.TAG; private static final String TAG_PLAYING_QUEUE = FragmentPlayingQueue.TAG; // private static final String TAG_NOW_PLAYING= PlayBackActivity.TAG; public static String CURRENT_TAG = TAG_LIBRARY; private static Handler mHandler; private ActionBarDrawerToggle toggle = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(getLayout()); searchView = (MaterialSearchView) findViewById(R.id.search_view); initToolbar(); ButterKnife.bind(this); initSetting(); if (Common.isMarshMallow()) { if (!checkPermission()) { requestPermission(); } else { doMainWork(); } } else { doMainWork(); } } private void initToolbar() { Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); ActionBar actionBar = getSupportActionBar(); if (actionBar != null) { actionBar.setDisplayHomeAsUpEnabled(true); actionBar.setHomeButtonEnabled(true); actionBar.setDisplayShowTitleEnabled(true); } } private void loadHomeFragment() { selectNavMenu(); if (getSupportFragmentManager().findFragmentByTag(CURRENT_TAG) != null) { drawerLayout.closeDrawers(); } 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.container, fragment, CURRENT_TAG); fragmentTransaction.commit(); } }; if (mPendingRunnable != null) { mHandler.post(mPendingRunnable); } drawerLayout.closeDrawers(); invalidateOptionsMenu(); } private Fragment getHomeFragment() { switch (navItemIndex) { case 0: // library return FragmentMain.newInstance(); case 1: // playlist return FragmentPlaylist.newInstance(); case 2: // playing queue return FragmentPlayingQueue.newInstance(); default: return FragmentMain.newInstance(); } } private void selectNavMenu() { navigationView.getMenu().getItem(navItemIndex).setChecked(true); } private void initSetting() { mHandler = new Handler(); navigationView.getMenu().performIdentifierAction(R.id.btn_lib_nav, 0); View header = navigationView.getHeaderView(0); tvSongTitleHeader = (TextView) header.findViewById(R.id.tv_song_name_nav_header); tvArtistHeader = (TextView) header.findViewById(R.id.tv_artist_name_nav_header); albumCoverHeader = (ImageView) header.findViewById(R.id.iv_nav_header_back_ground); setupNavigationView(); mPresenter = new HomePresenter(); mPresenter.attachedView(this); addOnMusicServiceListener(this); } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); switch (id) { case R.id.action_search: return true; } if (toggle.onOptionsItemSelected(item)) { return true; } return super.onOptionsItemSelected(item); } private void setupNavigationView() { navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() { @Override public boolean onNavigationItemSelected(@NonNull MenuItem item) { switch (item.getItemId()) { case R.id.btn_lib_nav: navItemIndex = 0; CURRENT_TAG = TAG_LIBRARY; break; case R.id.btn_playlist_nav: CURRENT_TAG = TAG_PLAYLISTS; navItemIndex = 1; break; case R.id.btn_play_queue_nav: CURRENT_TAG = TAG_PLAYING_QUEUE; navItemIndex = 2; break; case R.id.btn_now_playing_nav: navItemIndex = 3; startActivity(new Intent(HomeActivity.this, PlayBackActivity.class)); drawerLayout.closeDrawers(); return true; case R.id.btn_about_nav: break; case R.id.btn_license_nav: break; case R.id.btn_feedback_nav: break; default: navItemIndex = 0; } if (item.isChecked()) { item.setChecked(false); } else { item.setChecked(true); } item.setChecked(true); loadHomeFragment(); return true; } }); } private boolean checkPermission() { int result = ContextCompat.checkSelfPermission(getApplicationContext(), READ_EXTERNAL_STORAGE); int result1 = ContextCompat.checkSelfPermission(getApplicationContext(), READ_EXTERNAL_STORAGE); return result == PackageManager.PERMISSION_GRANTED && result1 == PackageManager.PERMISSION_GRANTED; } private void requestPermission() { ActivityCompat.requestPermissions(this, new String[] { WRITE_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE }, PERMISSION_REQUEST_CODE); } private void doMainWork() { navigationView.getMenu().getItem(0).setChecked(true); showFragment(FragmentMain.newInstance(), FragmentMain.TAG); btnTogglePlay.setOnClickListener(mPresenter); currentPlayBar.setOnClickListener(mPresenter); setupSearchView(); Intent intent = getIntent(); switch (intent.getAction()) { case ACTION_OPEN_ALBUM_DETAIL: Album album = (Album) intent.getSerializableExtra(KEY_ALBUM_DETAIL); Navigator.navigateToAlbumDetail(this, album, null); break; case ACTION_OPEN_ARTIST_DETAIL: Artist artist = (Artist) intent.getSerializableExtra(KEY_ARTIST_DETAIL); Navigator.navigateToArtistDetail(this, artist, null); break; } } private void setupSearchView() { searchAdapter = new SearchAdapter(this); lstSearchResult = new ArrayList(); searchAdapter.setItemClickListener(this); searchView.setOnQueryTextListener(this); } @Override protected void onResume() { super.onResume(); IntentFilter filter = new IntentFilter(); filter.addAction(MusicService.PLAY_STATE_CHANGE); LocalBroadcastManager.getInstance(this).registerReceiver(mPresenter.getReceiver(), filter); } @Override protected void onPause() { super.onPause(); LocalBroadcastManager.getInstance(this).unregisterReceiver(mPresenter.getReceiver()); } @Override protected void search(String query) { FragmentMain fragmentMain = (FragmentMain) getSupportFragmentManager().findFragmentByTag(FragmentMain.TAG); if (fragmentMain != null && fragmentMain.isVisible()) { mPresenter.searchAll(query); } FragmentAlbumDetail fragmentAlbum = (FragmentAlbumDetail) getSupportFragmentManager() .findFragmentByTag(FragmentAlbumDetail.TAG); if (fragmentAlbum != null && fragmentAlbum.isVisible()) { mPresenter.searchAlbumDetail(query, fragmentAlbum.getAlbum().getId()); } FragmentArtistDetail fragmentArtist = (FragmentArtistDetail) getSupportFragmentManager() .findFragmentByTag(FragmentArtistDetail.TAG); if (fragmentArtist != null && fragmentArtist.isVisible()) { mPresenter.searchArtistDetail(query, fragmentArtist.getArtistId()); } FragmentPlayingQueue fragmentPlayingQueue = (FragmentPlayingQueue) getSupportFragmentManager() .findFragmentByTag(FragmentPlayingQueue.TAG); if (fragmentPlayingQueue != null && fragmentPlayingQueue.isVisible()) { Toast.makeText(this, "Playing Queue", Toast.LENGTH_SHORT).show(); if (mService != null && mService.getLstSong() != null) mPresenter.searchPlayingQueue(query, mService.getLstSong()); else mPresenter.searchAll(query); } FragmentPlaylist fragmentPlaylist = (FragmentPlaylist) getSupportFragmentManager() .findFragmentByTag(FragmentPlaylist.TAG); if (fragmentPlaylist != null && fragmentPlaylist.isVisible()) { mPresenter.searchAll(query); } } @Override public void onBackPressed() { if (drawerLayout.isDrawerOpen(GravityCompat.START) || searchView.isSearchOpen()) { if (searchView.isSearchOpen()) searchView.closeSearch(); if (drawerLayout.isDrawerOpen(GravityCompat.START)) drawerLayout.closeDrawer(GravityCompat.START); } else { super.onBackPressed(); } } @Override protected int getLayout() { return R.layout.activity_home; } @Override public Context getViewContext() { return this; } @Override public void updateSeekBar(int currentTime, int totalTime) { seekBar.setMax(totalTime); seekBar.setProgress(currentTime); } @Override public void updatePlayPauseState() { if (mService.getState() == MusicService.MusicState.Playing) { btnTogglePlay.setImageResource(R.drawable.ic_pause_red_600_24dp); } else { btnTogglePlay.setImageResource(R.drawable.ic_play_arrow_red_600_24dp); } } @Override public MusicService getMusicService() { return this.mService; } @Override public void updateSongInfo() { if (mService == null) return; Song song = mService.getCurrentSong(); if (song == null) return; //Current bar tvArtistCurrentBar.setText(song.getArtist()); tvSongTitleCurrentBar.setText(song.getTitle()); Glide.with(this).load(song.getCoverPath()).placeholder(R.drawable.music_background).centerCrop() .dontAnimate().into(ivAlbumCurrentBar); //Navigation header tvArtistHeader.setText(song.getArtist()); tvSongTitleHeader.setText(song.getTitle()); Glide.with(this).load(song.getCoverPath()).centerCrop().placeholder(R.drawable.music_background) .into(albumCoverHeader); } @Override public void updateSearch(ArrayList lstResult) { super.updateSearchView(lstResult); } @Override public void onConnected(MusicService service) { this.mService = service; updateSongInfo(); mPresenter.updateTimePlay(); updatePlayPauseState(); } @Override protected void onDestroy() { super.onDestroy(); mPresenter.detachView(); mPresenter = null; } @Override public void setDrawerLayoutActionBarToggle(Toolbar toolbar) { toggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close); drawerLayout.addDrawerListener(toggle); toggle.syncState(); } @Override public void onItemClickListener(View view, int position) { if (searchView.isSearchOpen()) searchView.closeSearch(); } }