get Byte array From Image via its Path - Android android.graphics

Android examples for android.graphics:Image Load Save

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Description

get Byte array From Image via its Path

Demo Code

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Base64;
import android.util.Log;
import java.io.ByteArrayOutputStream;

public class Main{

    public static final byte[] getBytesFromImagePath(String imagePath) {
        //Only decode image size. Not whole image
        BitmapFactory.Options option = new BitmapFactory.Options();
        option.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(imagePath, option);

        // Minimum width and height are > NEW_SIZE (e.g. 380 * 720)
        final int NEW_SIZE = 480;

        //Now we have image width and height. We should find the correct scale value. (power of 2)
        int width = option.outWidth;
        int height = option.outHeight;
        int scale = 1;
        while (width / 2 > NEW_SIZE || height / 2 > NEW_SIZE) {
            width /= 2;//  ww w . j  a  va  2  s.co  m
            height /= 2;
            scale++;
        }
        //Decode again with inSampleSize
        option = new BitmapFactory.Options();
        option.inSampleSize = scale;

        Bitmap bitmap = BitmapFactory.decodeFile(imagePath, option);
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.JPEG, 80, stream);
        bitmap.recycle();

        return stream.toByteArray();
    }

}

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