Android OutOfMemoryError for large images

Question

The method throws OutOfMemoryError for large images in size( not by resolution) i have 12 MP photos, all of them are different in size(1.5MB, 2.5MB, 3.2MB, 4.1MB) etc and the re

Answer 1

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Image Size : 4000*3000 in px

When the image load : 4000*3000*4 = ? KB

So,Vitrual Heap Memory of the Android device are : 32 MB, 64 MB , 128 MB ... so on

if you using:

This will increase the VHM double (if 32 MB = 2* 32 MB). BUt this will not an good way to do this, effect on OS

You need to decrease the size of the image.

---

Use the below class and pass the path of the image and width , height what you want

Bitmap bitmap = BitmapSize.getDecodedBitmap(path, 400, 400);

Class::::

public class BitmapSize{



public static Bitmap getDecodedBitmap(String path, float target_width, float target_height) {
    Bitmap outBitmap = null;
    try {
        Options decode_options = new Options();
        decode_options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(path,decode_options);  //This will just fill the output parameters
        int inSampleSize = calculateInSampleSize(decode_options, target_width, target_height);

        Options outOptions = new Options();
        outOptions.inJustDecodeBounds = false;
        outOptions.inSampleSize = inSampleSize;
        outOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;
        outOptions.inScaled = false;

        Bitmap decodedBitmap = BitmapFactory.decodeFile(path,outOptions);
        outBitmap = Bitmap.createScaledBitmap(decodedBitmap,// (int)target_width, (int)target_height, true);
                (int)((float)decodedBitmap.getWidth() / inSampleSize),
                (int)((float)decodedBitmap.getHeight() / inSampleSize), true);
        System.out.println("Decoded Bitmap: Width "  + outBitmap.getWidth() + " Height = " + outBitmap.getHeight() + " inSampleSize = " + inSampleSize);

    } catch (Exception e) {
        // TODO: handle exception
    }

    return outBitmap;
}

public static int calculateInSampleSize(Options options, float reqWidth, float reqHeight) {
    final int height = options.outHeight;
    final int width = options.outWidth;
    int inSampleSize = 1;

    if (height > reqHeight || width > reqWidth) {

        final int heightRatio = Math.round((float) height
                / (float) reqHeight);
        final int widthRatio = Math.round((float) width / (float) reqWidth);

        inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
    }

    return inSampleSize;
}

}