Call to `getDrawingCache` returns null when scroll is enabled

Question

What is missing in this code? This same code works on ICS. On API 8 the scroll appears and some content goes out of screen. How to get the drawing cache in this case?

Code:

TableLayout page = (TableLayout) findViewById(R.id.page);
page.setDrawingCacheEnabled(true);
page.buildDrawingCache();

// getDrawingCache returns null...
Bitmap pageBmp = Bitmap.createBitmap(page.getDrawingCache(true));
page.destroyDrawingCache();
page.setDrawingCacheEnabled(false);

Possible duplicate of [Android View.getDrawingCache returns null, only null](http://stackoverflow.com/questions/2339429/android-view-getdrawingcache-returns-null-only-null) — Yuliia Ashomok, Apr 13 '16 at 10:47
similar http://stackoverflow.com/questions/2339429/android-view-getdrawingcache-returns-null-only-null — Yuliia Ashomok, Apr 13 '16 at 10:47

score 18 · Accepted Answer · answered Jul 19 '12 at 13:05

18

I solved it. Created a bitmap of view size and drew the view into it.

TableLayout page = (TableLayout) findViewById(R.id.page);
Bitmap pageBmp = Bitmap.createBitmap(page.getWidth(), page.getHeight(), 
                                       Config.ARGB_8888);
Canvas canvas = new Canvas(pageBmp);
page.draw(canvas);

Used the pageBmp bitmap..

answered Jul 19 '12 at 13:05

Ron

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10x a lot man, i had some problems with a bitmap, it was always null, with something similar as in how you tried the first time, but this code just saved my project :D It works flawless – rosu alin Aug 20 '12 at 08:03
Awesome hack dude.... Solved my problem. This would really help those who are using scrollview as a parent because getDrawingCache() doesn't work if scrollView is present. – Irfan Raza Sep 25 '16 at 22:39

Call to `getDrawingCache` returns null when scroll is enabled

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