Android Open Source - unmp List Fragment

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From Project

Back to project page unmp.

License

The source code is released under:

MIT License

Java Source Code

package com.parnswir.unmp;
//from   ww w .ja v a2s  .  co m
import java.util.ArrayList;

import android.content.SharedPreferences.Editor;
import android.database.Cursor;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;

import com.parnswir.unmp.core.C;
import com.parnswir.unmp.core.CoverList;
import com.parnswir.unmp.core.DatabaseUtils;
import com.parnswir.unmp.core.IconicAdapter;
import com.parnswir.unmp.playlist.MediaFile;
import com.parnswir.unmp.playlist.Playlist;

public class ListFragment extends AbstractFragment {
  
  public static final String SCROLL_POSITION = "scroll_position";

  protected ListView contentList;
  protected CoverList currentContent = new CoverList();
  protected ArrayList<String> itemList = new ArrayList<String>();
  protected Button playAllButton;
  
  private String suffix = "", tableName, nameColumn, join, currentID;
  private boolean isInDetailedState = false;


  @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
      rootView = super.onCreateView(inflater, container, savedInstanceState);
      inflate(R.layout.list_fragment);
      showActionBar();
      init();
        return rootView; 
    }
  
  @Override
  public void onStart() {
    super.onStart();
    contentList.setSelection(preferences.getInt(SCROLL_POSITION + suffix, 0));
  }
  
  @Override
  public void onStop() {
    int position = contentList.getFirstVisiblePosition();
    Editor editor = preferences.edit();
    editor.putInt(SCROLL_POSITION + suffix, position);
    editor.apply();
    super.onStop();
  }
  
  public void init() {
    tableName = C.FRAGMENTS[activity.selectedItem].tableName;
    nameColumn = C.getNameColumnFor(tableName);
    suffix = tableName;
    join = DatabaseUtils.getJoinForTables(new String[] {tableName});
     
        contentList = (ListView) rootView.findViewById(R.id.contentList);
        contentList.setOnItemClickListener(new ListItemClickListener());
    
    playAllButton = (Button) rootView.findViewById(R.id.playAllButton);
    playAllButton.setOnClickListener(new PlayAllClickListener());
    
    displayContentFor(null);
  }
  
  private void displayContentFor(String id) {
    clearLists();
    Cursor cursor;
    if (id == null) {
      contentList.setAdapter(new IconicAdapter(activity, currentContent));
      cursor = DB.query(tableName, new String[] {C.COL_ID, nameColumn}, null, null, null, null, nameColumn);
    } else {
      contentList.setAdapter(new ArrayAdapter<String>(activity, android.R.layout.simple_list_item_1, currentContent.names));
      cursor = DB.query(join, 
          new String[] {C.COL_FILE, C.COL_TITLE}, 
          tableName + "." + C.COL_ID + " = ?", 
          new String[] {id}, 
          null, null, 
          C.COL_TRACK_NUMBER);
    }
    cursor.moveToFirst();
    while (! cursor.isAfterLast()) {
      itemList.add(cursor.getString(0));
      currentContent.names.add(cursor.getString(1));
      cursor.moveToNext();
    } 
    cursor.close();
    currentID = id;
  }

  private void clearLists() {
    currentContent.clear();
    itemList.clear();
  }

  @Override
  public boolean onKeyUp(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
      if (isInDetailedState) {
        displayContentFor(null);
        isInDetailedState = false;
        return true;
      }
    }
    return false;
  }
  
  private Playlist constructPlaylist() {
    Playlist playlist = new Playlist();
    String query = String.format("SELECT %s FROM %s", C.COL_FILE, C.TAB_TITLES);
    if (isInDetailedState) {
      query = String.format("SELECT %s FROM %s WHERE %s = %s", C.COL_FILE, join, tableName + "." + C.COL_ID, currentID);
    }
    playlist.addItemsFromFilter(DB, query);
    return playlist;
  }
  
  public class ListItemClickListener implements OnItemClickListener {
    @Override
    public void onItemClick(AdapterView<?> adapter, View item, int position, long id) {
      if (isInDetailedState) {
        Playlist playlist = constructPlaylist();
        playlist.children.add(0, new MediaFile(itemList.get(position)));
        playPlaylist(playlist, 0);
      } else {
        showTitle(currentContent.names.get(position));
        displayContentFor(itemList.get(position));
        isInDetailedState = true;
      }
    }
    } 
  
  public class PlayAllClickListener implements OnClickListener {
    @Override
    public void onClick(View view) {
      Playlist playlist = constructPlaylist();
      playPlaylist(playlist, 0);
    }
  }
  
}

Java Source Code List

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