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

Please try with these Option properties..

    BitmapFactory.Options opts=new BitmapFactory.Options();
    opts.inDither=false;                     //Disable Dithering mode
    opts.inPurgeable=true;                   //Tell to gc that whether it needs free memory, the Bitmap can be cleared
    opts.inInputShareable=true;              //Which kind of reference will be used to recover the Bitmap data after being clear, when it will be used in the future
    opts.inTempStorage=new byte[32 * 1024];
    opts.inSampleSize = 1;

To reduce the quality of image file increase the number of opts.inSampleSize. Click here for more details

And add one more attribute in Manifest.xml in application tag

android:largeHeap="true"

Answer 2

Read Article

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:

<application

    android:largeHeap="true">

</application>

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;
}

}

Answer 3

Please read http://developer.android.com/training/displaying-bitmaps/load-bitmap.html how to deal with large Bitmaps.

The BitmapFactory class provides several decoding methods (decodeByteArray(), decodeFile(), decodeResource(), etc.) for creating a Bitmap from various sources. Choose the most appropriate decode method based on your image data source. These methods attempt to allocate memory for the constructed bitmap and therefore can easily result in an OutOfMemory exception