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POOutOfMemoryError when displaying contacts' photos in Android (bitmap size exceeds VM budget)
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  1. POOutOfMemoryError when displaying contacts' photos in Android (bitmap size exceeds VM budget)
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    copied!<p>I use the following function to retrieve a contact's photo in Android where the person's lookup key is given:</p> <pre><code>public Bitmap getContactPhoto(String lookup_key) { Uri lookUpUri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_LOOKUP_URI, lookup_key); Uri contentUri = ContactsContract.Contacts.lookupContact(ctx.getContentResolver(), lookUpUri); InputStream stream = null; try { stream = ContactsContract.Contacts.openContactPhotoInputStream(ctx.getContentResolver(), contentUri); } catch (Exception e) { } if (stream != null) { return BitmapFactory.decodeStream(stream, null, bitmapOptions); } else { return null; } } </code></pre> <p>When I display those contact photos in a list view, I sometimes read the following error in the developer console's crash reports:</p> <pre><code>Caused by: java.lang.OutOfMemoryError: bitmap size exceeds VM budget(Heap Size=6023KB, Allocated=3002KB, Bitmap Size=27152KB) </code></pre> <p>Does this mean that my app may use about 3MB of heap but a single bitmap had roughly 27MB?</p> <p>I read a lot of questions here on Stack Overflow concerning OutOfMemory error but it was mainly about:</p> <ul> <li>leaking contexts so that the garbage collector cannot free the resources</li> <li>huge bitmaps that need to be scaled</li> </ul> <p>But how can I prevent the error in my case? Since I only get the contacts' photos, I don't know if I have huge bitmaps that must be scaled. And leaking a context doesn't seem to be the case here.</p> <p><strong>This is how the images are displayed:</strong></p> <pre><code>imageView.setVisibility(View.VISIBLE); imageView.setBackgroundResource(R.drawable.background); if (&lt;BITMAP_OBJECT&gt; != null) { imageView.setImageBitmap(&lt;BITMAP_OBJECT&gt;); } else { imageView.setImageBitmap(null); } </code></pre>
 

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