Optimal use of BitmapFactory.Options.inSampleSize for speed

Question

Thanks to Schermvlieger for asking this question on anddev.org,

I\'m just copying his question to SO as nobody replied on th

Answer 1

Here you can call the user defined method shrinkmehtod that actually send the string file path and the height and width to be reduce image to method.

 Bitmap bit=shrinkmethod(arrpath1[position], 100, 100);


            //iv.setImageURI(Uri.parse(arrpath1[position]));
            iv.setImageBitmap(bit);

This is user defined method to reduce the size of image programmatically.

Bitmap shrinkmethod(String file,int width,int height){
        BitmapFactory.Options bitopt=new BitmapFactory.Options();
        bitopt.inJustDecodeBounds=true;
        Bitmap bit=BitmapFactory.decodeFile(file, bitopt);

        int h=(int) Math.ceil(bitopt.outHeight/(float)height);
        int w=(int) Math.ceil(bitopt.outWidth/(float)width);

        if(h>1 || w>1){
            if(h>w){
                bitopt.inSampleSize=h;

            }else{
                bitopt.inSampleSize=w;
            }
        }
        bitopt.inJustDecodeBounds=false;
        bit=BitmapFactory.decodeFile(file, bitopt);



        return bit;

    }

I hope this will help you to reduce size.