Android : Bitmap causing out of memory error

Question

I have been going crazy with this android error and from browsing the previous posts about this error none of the solutions that were given helped me.

I am of course talking about the all powerful killer known as the 'android Out of memory on a (NUMBER)-byte allocation.' I am trying to create a photo uploader and after the 3rd maybe 4th image my app crashes. I know to stop the crash to use a catch exception however that is not my problem. I am here to ask the community is there any solution to fixing this byte allocation error ?

Here is a snippet of my code involving the bit map .

 String post = editTextPost.getText().toString().trim(); // get the photo : Bitmap image = ((BitmapDrawable)postImage.getDrawable()).getBitmap(); ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); // compress the image to jpg format : image.compress(Bitmap.CompressFormat.JPEG, 45, byteArrayOutputStream); byte[] imageBytes = byteArrayOutputStream.toByteArray(); String encodeImage = Base64.encodeToString(imageBytes,Base64.DEFAULT); // Recycle bitmap : image.recycle(); image=null; // send data : sendPost p = new sendPost(this); p.execute(post, encodeImage); imageBytes=null;

Im not using any libraries and would like to keep it that way however if using a library is the only option I will use one. Hopefully someone can help.

I don't believe that recycle removes the image right away from memory. It depend on the garbage collector. recycle doesn't force it. — hasan
– hasan, Commented Mar 21, 2016 at 21:31

Eury Pérez Beltré · Accepted Answer · 2016-03-21 20:48:41Z

Bitmaps won't completely recycle if they are attached to a View, for example to a ImageView, if you do imageView.setImageBitmap(bitmap), you need to clear it before doing imageView.setImageBitmap(null) and clearing any other reference to any view.

Shadab Ansari · Accepted Answer · 2016-03-21 21:25:42Z

After you finish uplloading the image release the memory occupied by the "postImage" -

postImage.setImageDrawable(null);

This will release any memory occupied by the bitmap associated with postImage

hasan · Accepted Answer · 2016-03-21 21:30:13Z

General Answer:

When you upload files you need to open a stream to your server and to your file at same time. read and write chunk by chunk of 1 MB for example. this way you will not get an out of memory exception.

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