MediaDAO.java

package com.netease.nim.uikit.common.media.dao;

import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.provider.MediaStore;
import android.util.Log;

public class MediaDAO {
	private static final String TAG = "MediaDAO";
	public static Cursor getAllMediaThumbnails(final Context context) {
		final String[] projection = new String[] {
				MediaStore.Images.Thumbnails._ID,
				MediaStore.Images.Thumbnails.IMAGE_ID,
				MediaStore.Images.Thumbnails.DATA };
		final Uri images = MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI;
		Cursor cursor = null;
		try{
			cursor = context.getContentResolver().query(images, projection, null,
					null, MediaStore.Images.Thumbnails._ID + " DESC");
		}catch(Exception e){
			e.printStackTrace();
			Log.e(TAG, "getAllMediaThumbnails exception");
		}
		return cursor;
	}
	
	public static Cursor getAllMediaPhotos(final Context context) {
		final Uri images = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
		Cursor cursor = null;
		try{
			cursor = context.getContentResolver().query(images, null, null,
					null, MediaStore.Images.Media.DATE_MODIFIED + " DESC");
		}catch(Exception e){
			e.printStackTrace();
			Log.e(TAG, "getAllMediaPhotos exception");
		}
		
		return cursor;
	}
}