Adjust image size to avoid memory issues with images so big

this is the code for decoding images inside a rectangle:

        private int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
     // Raw height and width of image
     final int height = options.outHeight;
     final int width = options.outWidth;
     int inSampleSize = 1;
 
     if (height > reqHeight || width > reqWidth) {
 
         // Calculate ratios of height and width to requested height and width
         final int heightRatio = Math.round((float) height / (float) reqHeight);
         final int widthRatio = Math.round((float) width / (float) reqWidth);
 
         // Choose the smallest ratio as inSampleSize value, this will guarantee
         // a final image with both dimensions larger than or equal to the
         // requested height and width.
         inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
     }
 
     return inSampleSize;
 }
 
 private Bitmap decodeBitmapFromResource(byte[] data,
         int reqWidth, int reqHeight) {

     // First decode with inJustDecodeBounds=true to check dimensions
     final BitmapFactory.Options options = new BitmapFactory.Options();
     options.inJustDecodeBounds = true;
     
     BitmapFactory.decodeByteArray(data, 0, data.length,options);

     // Calculate inSampleSize
     options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
     

     // Decode bitmap with inSampleSize set
     options.inJustDecodeBounds = false;
     
     return BitmapFactory.decodeByteArray(data, 0, data.length,options);
     
 }

Then you can use it in this way:

byte[] data = getImageFromUrl(url);
    
if(data!=null){
    bitmap = decodeBitmapFromResource(data, image_size, image_size);
}