android - out of memory exception when creating bi

Question

I am getting the following error after creating bitmap second time around:

04-17 18:28:09.310: ERROR/AndroidRuntime(3458): java.lang.OutOfMemoryError: bitmap size exceeds VM budget

this._profileBitmap = Bitmap.createBitmap(_profileBitmap, xCoor,  yCoor, width, height);

From log:

04-17 18:27:57.500: INFO/CameraCropView(3458): Original Photo Size: W 1536 x H 2048   
04-17 18:28:06.170: INFO/CameraCropView(3458): xCoor: 291   
04-17 18:28:06.170: INFO/CameraCropView(3458): yCoor: 430    
04-17 18:28:06.170: INFO/CameraCropView(3458): Width: 952  
04-17 18:28:06.170: INFO/CameraCropView(3458): Height: 952  

Since the image is huge I get the error. But the interesting thing is the error does not happen the first time, only when I take the picture the second time, which makes me believe this profileBitmap is NOT destroyed. How do I clean this up?

Answer 1

You can try calling recycle() on the bitmap when you are done with it. This will clear all the image data and free up the memory. If anything tries to draw the bitmap after this then your app will crash. If you do get a crash it may help you find out what is still holding onto your bitmap.

Answer 2

With Larger images it can be avoided by sampling them into smaller size. Use below example -

    File f = new File(selectedImagePath); 

    // First decode with inJustDecodeBounds=true to check dimensions
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeStream(new FileInputStream(f), null, options); 
    // Calculate inSampleSize
    options.inSampleSize = calculateInSampleSize(options, 720, 1280); //My device pixel resolution
    // Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;    
    Bitmap bmpPic = BitmapFactory.decodeStream(new FileInputStream(f), null, options); 


    Bitmap bmpPic1 = Bitmap.createBitmap(bmpPic, 0, 0, bmpPic.getWidth(), bmpPic.getHeight(), mat, true);   
    img.setImageBitmap(bmpPic1);  //img is your ImageView

Reference- http://developer.android.com/training/displaying-bitmaps/load-bitmap.html

Answer 3

I had this issue because I was modifying a bitmap once, and then modifying the modified version a second time, resulting in three versions of the same bitmap (original, plus the two modified versions) being in memory at the same time.

I fixed it by changing my image-editing code to apply both modifications to the same bitmap as a kind of batch process, halving the number of modified versions that my app had to hold in memory.