DownloadActivity.java :  » Client » jinzora-mobile-android » org » jinzora » download » Android Open Source

package org.jinzora.download;

import java.util.List;

import org.jinzora.Jinzora;
import org.jinzora.R;

import android.app.AlertDialog;
import android.app.ListActivity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;

public class DownloadActivity extends ListActivity {

  DownloadListAdapter mAdapter;
  BroadcastReceiver mDownloadListUpdateReceiver;
  
  final static int MENU_CANCEL_ALL = 1;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    setContentView(R.layout.download);
    
    ((Button)findViewById(R.id.launch_music_app)).setOnClickListener(new View.OnClickListener() {
      
      @Override
      public void onClick(View arg0) {
        Intent mediaPlayer 
              = new Intent(Intent.ACTION_MAIN)
                .addCategory(Intent.CATEGORY_LAUNCHER)
                .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
                .setClassName("com.android.music", "com.android.music.MusicBrowserActivity");
        
        startActivity(mediaPlayer);
      }
    });
    
    ((ListView)findViewById(android.R.id.list))
    .setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
      String[] entryOptions = new String[] {"Cancel download"};
      String selectedEntry;
      
      @Override
      public boolean onItemLongClick(AdapterView<?> parent,
          View view, final int listPosition, long id) {
        
        // freeze it since adapter may change
        selectedEntry = mAdapter.getItem(listPosition);
        new AlertDialog.Builder(DownloadActivity.this)
        .setTitle(selectedEntry)
        .setItems(entryOptions, 
            new AlertDialog.OnClickListener() {
              @Override
              public void onClick(
                  DialogInterface arg0, int entryPos) {
                
                switch (entryPos) {
                case 0:
                  // Cancel download
                  try {
                    Jinzora
                    .sDlConnection
                    .getBinding()
                    .cancelDownload(listPosition, selectedEntry);
                  } catch (Exception e) {
                    Log.e("jinzora","Failed to cancel download",e);
                  }
                  break;
                }
                
              }
            }
        ).create().show();
        
        return true;
      }
    });
    
    try {
      List<String>pendingDownloads = 
         Jinzora
        .sDlConnection
        .getBinding()
        .getPendingDownloads();
      
      mAdapter = new DownloadListAdapter(DownloadActivity.this,pendingDownloads);
      setListAdapter(mAdapter);
    } catch (Exception e) {
      Log.e("jinzora","failed to get download list",e);
    }
  }
  
  @Override
  protected void onStart() {
    super.onStart();
    
    mDownloadListUpdateReceiver = new BroadcastReceiver() {
      @Override
      public void onReceive(Context context, Intent intent) {
        try {
          List<String>pendingDownloads = 
             Jinzora
            .sDlConnection
            .getBinding()
            .getPendingDownloads();
          
          mAdapter = new DownloadListAdapter(DownloadActivity.this,pendingDownloads);
          setListAdapter(mAdapter);
        } catch (Exception e) {
          Log.e("jinzora","failed to get download list",e);
        }
      }
    };  
    
    IntentFilter intentFilter = new IntentFilter(DownloadService.UPDATE_DOWNLOAD_LIST);
    registerReceiver(mDownloadListUpdateReceiver, intentFilter);
    
  }
  
  @Override
  protected void onStop() {
    super.onStop();
    
    unregisterReceiver(mDownloadListUpdateReceiver);
    mDownloadListUpdateReceiver = null;
  }
  
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    menu.add(0,MENU_CANCEL_ALL,1,R.string.cancel_all_downloads)
      .setIcon(android.R.drawable.ic_menu_close_clear_cancel)
      .setAlphabeticShortcut('x');
    
    return true;
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {

    int id = item.getItemId();
    switch (id) {
    case MENU_CANCEL_ALL:
      try {
        Jinzora
        .sDlConnection
        .getBinding()
        .cancelAllDownloads();
      } catch (Exception e) {
        Log.e("jinzora","failed to cancel all downloads",e);
      }
      break;
    }
    return true;
  }
}

class DownloadListAdapter extends ArrayAdapter<String> {
  LayoutInflater sInflator;
  
  public DownloadListAdapter(Context c, List<String>list) {
    super(c,R.layout.download_entry,list);
    if (sInflator == null) {
      sInflator = LayoutInflater.from(c);
    }
  }
  
  public View getView(int position, View convertView, ViewGroup parent) {
    View row;
    if (convertView == null) {
      row = sInflator.inflate(R.layout.download_entry,null);
    } else {
      row = convertView;
    }
    ((TextView)row.findViewById(R.id.dl_title)).setText(getItem(position));
    
    return row;
  }
  
  public String getEntryTitle(int pos) {
    return getItem(pos);
  }
}