How to get picture or video thumbnails on Android

/**

   * @param imagePath
   * The path to the image
   * @param width
   * Specify the width of the output image
   * @param height
   * Specify the height of the output image
   * @return Generated thumbnail
   */
 public static Bitmap getImageThumbnail(String imagePath, int width, int height)
 {
 Bitmap bitmap = null;
  options = new ();
  = true;
 // Get the width and height of this picture, note that the bitmap here is null bitmap = (imagePath, options);
  = false; // Set to false // Calculate the scaling ratio int h = ;
 int w = ;
 int beWidth = w / width;
 int beHeight = h / height;
 int be = 1;
 if (beWidth < beHeight)
 {
  be = beWidth;
 }
 else
 {
  be = beHeight;
 }
 if (be <= 0)
 {
  be = 1;
 }
  = be;
 //Read the picture again and read the zoomed bitmap. Note that this time you should set it to false bitmap = (imagePath, options);
 // Use ThumbnailUtils to create thumbnails, here you need to specify which Bitmap object to zoom in bitmap = (bitmap, width, height,
  ThumbnailUtils.OPTIONS_RECYCLE_INPUT);
 return bitmap;
 }

 /**
   * Get thumbnails of video. First use ThumbnailUtils to create a thumbnail of a video, and then use ThumbnailUtils to generate thumbnails of a specified size.
   * If the width and height of the desired thumbnail are smaller than MICRO_KIND, then the type should use MICRO_KIND as the value of kind, which will save memory.
   *
   * @param videoPath
   * Video path
   * @param width
   * Specify the width of the output video thumbnail
   * @param height
   * Specify the height of the output video thumbnail
   * @param kind
   * Refer to the constants MINI_KIND and MICRO_KIND in the class.
   * Where, MINI_KIND: 512 x 384, MICRO_KIND: 96 x 96
   * @return Video thumbnail of specified size
   */
 public static Bitmap getVideoThumbnail(String videoPath, int width, int height,
  int kind)
 {
 Bitmap bitmap = null;
 // Get a thumbnail of the video bitmap = (videoPath, kind);
 ("w" + ());
 ("h" + ());
 bitmap = (bitmap, width, height,
  ThumbnailUtils.OPTIONS_RECYCLE_INPUT);
 return bitmap;
 }