Android Open Source - 2014-Droid-code Main Activity

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License

The source code is released under:

GNU General Public License

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Java Source Code

package cs518.sample.usemediastorecontentprovider;
/*/* w w  w.jav  a  2  s. c o m*/
 * Uses the MediaStore Content Provider
 * needs the following in the manifest
 *  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
 *  <uses-permission android:name="android.permission.READ_INTERNAL_STORAGE" />
 *  follow your book
 *  This is a simple implementation I leave it to you to implement 
 *  a CursorAdapter and an AdapterView and and other functionality.
 */
import android.app.Activity;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.widget.TextView;

public class MainActivity extends Activity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Cursor cursor;
    String counts;
    int count=50;
    TextView tView = (TextView) findViewById(R.id.calendarview);
    
    cursor = getAudio(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI);
    counts = "External audio files: " + cursor.getCount() + " (Showing 50)\n";
    tView.append(counts);
    
    while (cursor.moveToNext() && count-- > 0 ) {
      String displayName = cursor.getString(cursor
          .getColumnIndex(MediaStore.Audio.Media.TITLE));
      tView.append("Name: ");
      tView.append(displayName);
      String lengSeconds = (cursor.getInt(cursor
          .getColumnIndex(MediaStore.Audio.Media.DURATION)) / 1000) + "s" ;
      tView.append(" Seconds: ");
      tView.append(lengSeconds);
      tView.append("\n");
    }
    cursor.close();
    
    cursor = getAudio(MediaStore.Audio.Media.INTERNAL_CONTENT_URI);
    counts = "Internal audio files: " + cursor.getCount() + " (Showing 50)\n";
    tView.append(counts);
        count=50;
    while (cursor.moveToNext() && count-- > 0 ) {
      String displayName = cursor.getString(cursor
          .getColumnIndex(MediaStore.Audio.Media.TITLE));
      tView.append("Name: ");
      tView.append(displayName);
      String lengSeconds = (cursor.getInt(cursor
          .getColumnIndex(MediaStore.Audio.Media.DURATION)) / 1000) + "s" ;
      tView.append(" Seconds: ");
      tView.append(lengSeconds);
      tView.append("\n");
    }
    cursor.close();
  }
  private Cursor getAudio(Uri uri) {
    // Run query, read all audio files on 
    String[] projection = new String[] { 
        MediaStore.Audio.Media.TITLE, 
        MediaStore.Audio.Media.DURATION };
    String selection = null;
    String[] selectionArgs = null;
    String sortOrder = null;
    /**
     * Not using SQLiteDatabawe.query(table, ...)
     * using ContentResolver.query(uri, ...)
     */
    return getContentResolver().query(uri, projection, selection, selectionArgs,
        sortOrder);
  }

}

Java Source Code List