session-android/src/org/thoughtcrime/securesms/database/loaders/RecentPhotosLoader.java

package org.thoughtcrime.securesms.database.loaders;


import android.Manifest;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.v4.content.CursorLoader;

import org.thoughtcrime.securesms.permissions.Permissions;

public class RecentPhotosLoader extends CursorLoader {

  public static Uri BASE_URL = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;

  private static final String[] PROJECTION = new String[] {
      MediaStore.Images.ImageColumns._ID,
      MediaStore.Images.ImageColumns.DATE_TAKEN,
      MediaStore.Images.ImageColumns.DATE_MODIFIED,
      MediaStore.Images.ImageColumns.ORIENTATION,
      MediaStore.Images.ImageColumns.MIME_TYPE
  };

  private final Context context;

  public RecentPhotosLoader(Context context) {
    super(context);
    this.context = context.getApplicationContext();
  }

  @Override
  public Cursor loadInBackground() {
    if (Permissions.hasAll(context, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
      return context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                                                PROJECTION, null, null,
                                                MediaStore.Images.ImageColumns.DATE_MODIFIED + " DESC");
    } else {
      return null;
    }
  }


}