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POAndroid bitmaps and capturing screen
 

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    <p>I have an app that generates a report in a TableLayout with a variable number of TableRows. </p> <p>I use the following code to capture the Table into a bitmap: </p> <pre><code>TableLayout tl = (TableLayout)findViewById(R.id.CSRTableLayout); Bitmap csr = Bitmap.createBitmap(tl.getWidth(), tl.getHeight(), Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(csr); tl.draw(canvas); </code></pre> <p>After I capture the screen as a bitmap, I attach it to an email using: </p> <pre><code>//folder already exists File file = new File(folder.getAbsolutePath()+"/CSR"+csrnum+".jpg"); BufferedOutputStream bos = null; FileOutputStream fos = null; try { fos=new FileOutputStream(file); bos=new BufferedOutputStream(fos); if(bos!=null) { try { csr.compress(Bitmap.CompressFormat.JPEG, 60, bos); } catch (OutOfMemoryError e) { Toast.makeText(CustomerReportActivity.this, "Out of Memory!", Toast.LENGTH_SHORT).show(); } finally { fos.flush(); fos.close(); bos.flush(); bos.close(); } } } catch (Exception e) { e.printStackTrace(); } if(file.exists()) { Intent i = new Intent(Intent.ACTION_SEND); i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); i.setType("message/rfc822"); String emailTo[] = {"***@****.***"}; i.putExtra(Intent.EXTRA_EMAIL,emailTo); i.putExtra(Intent.EXTRA_SUBJECT,"..."); i.putExtra(Intent.EXTRA_TEXT, "..."); i.putExtra(Intent.EXTRA_STREAM,Uri.parse("file://"+file.getAbsolutePath())); startActivity(i); } else { Toast.makeText(CustomerReportActivity.this, "Error attaching report to email!", Toast.LENGTH_SHORT).show(); } </code></pre> <p>The problem is that sometimes the table can get quite large, such as 1600x2400dp. I have gotten an OutOfMemoryError on the line "Bitmap.createBitmap(...)" Is there an alternative method to capture the screen while not overflowing the VM heap? If I understand correctly, calling Bitmap.createBitmap(...) is creating a bitmap the full size that is all just plain white. Is it possible to create it with NO pixel data and only fill it in once I called csr.compress(...) so that way it stays small? Any ideas/suggestions are greatly appreciated! Thanks in advance!</p>
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    1. COI think this one is your buddy http://stackoverflow.com/questions/5663671/creating-an-empty-bitmap-and-drawing-though-canvas-in-android and I would recommend using Bitmap.Config.ARGB_8 at start then update it.
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    2. COMore to that http://stackoverflow.com/questions/477572/android-strange-out-of-memory-issue
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    3. COtry adding <application android:largeHeap="true"> to your manifest file
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