OutofMemoryError: bitmap size exceeds VM budget (Android)

Question

Getting an Exception in the BitmapFactory. Not sure what is the issue. (Well I can guess the issue, but not sure why its happening)

ERROR/AndroidRuntime(7906): java.lang.OutOfMemoryError: bitmap size exceeds VM budget

ERROR/AndroidRuntime(7906):     at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:295)

My code is pretty straight forward. I defined an XML layout w/ a default image. I try to load a bm on the SDCard (if present - it is). If not it shows the default image. Anyway.. Here is code :

public class showpicture extends Activity {
  public void onCreate(Bundle savedInstanceState) {

         /** Remove menu/status bar **/
         requestWindowFeature(Window.FEATURE_NO_TITLE);
         final Window win = getWindow();   
         win.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);

            Bitmap bm;
         super.onCreate(savedInstanceState);
         setContentView(R.layout.showpicture);
            try {
         ImageView mImageButton = (ImageView)findViewById(R.id.displayPicture);
         bm = Bitmap.createScaledBitmap(BitmapFactory.decodeFile("/sdcard/dcim/Camera/20091018203339743.jpg"),100, 100, true);
         parkImageButton.setImageBitmap(bm);
         }
         catch (IllegalArgumentException ex) {
          Log.d("MYAPP",ex.getMessage());
         } 
            catch (IllegalStateException ex) {

It fails on the bm=Bitmap.createScaledBitmap any thoughts? I did some research on the forums, and it pointed to this post I just don't know why it is not working. Any help would be great! Thanks,

Chris.

Answer 1

inSampleSize is a good hint. But a fixed value often doesn't work fine, since large bitmaps from files usually are user files, which can vary from tiny thumbnails to 12MP images from the digicam.

Here's a quick and dirty loading routine. I know there's room for improvement, like a nicer coded loop, using powers of 2 for faster decoding, and so on. But it's a working start...

public static Bitmap loadResizedBitmap( String filename, int width, int height, boolean exact ) {
    Bitmap bitmap = null;
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeFile( filename, options );
    if ( options.outHeight > 0 && options.outWidth > 0 ) {
        options.inJustDecodeBounds = false;
        options.inSampleSize = 2;
        while (    options.outWidth  / options.inSampleSize > width
                && options.outHeight / options.inSampleSize > height ) {
            options.inSampleSize++;
        }
        options.inSampleSize--;

        bitmap = BitmapFactory.decodeFile( filename, options );
        if ( bitmap != null && exact ) {
            bitmap = Bitmap.createScaledBitmap( bitmap, width, height, false );
        }
    }
    return bitmap;
}

Btw, in the newer APIs there are also lots of BitmapFactory.Option's for fitting the image to screen DPIs, but I'm not sure whether they really simplify anything. Using android.util.DisplayMetrics.density or simply a fixed size for less memory consumption seem to work better imho.