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POProgrammatic screenshot on android: setDrawingCacheEnabled throws a CalledFromWrongThreadException
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2011-07-15T23:54:31.320
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2012-11-30T15:48:51.390
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I'm running into an issue when trying to call content.setDrawingCacheEnabled(true) in one of my robotium tests. When i try to enable the drawing cache on the context I sometimes get a CalledFromWrongThreadException. This only seems to happen when running on an emulator. When I try this on device (Samsung S2) it works every time... Here is the code Calling function: <pre><code>String screnshotName = String.format("SS_Cities_%s.png", s); File ssDir = Environment.getExternalStorageDirectory(); TestUtilities.takeScreenShot(solo.getCurrentActivity(), ssDir, screnshotName); </code></pre> Screenshot function (that throws exception): <pre><code>public static void takeScreenShot(Activity activity, File Directory, String FileName) throws Exception { View content = activity.findViewById(R.id.content); ***// This is a horrible hack that i want to get rid of*** // Occasiaonally setDrawingCacheEnabled throws a CalledFromWrongThreadException int MAX_RETRIES = 10; for(int i = 0; i < MAX_RETRIES; i++) { try{ content.setDrawingCacheEnabled(true); continue; } catch (Exception e){} } content.buildDrawingCache(); Bitmap b = content.getDrawingCache(); File outputFile = new File(Directory.toString() + "/" + FileName); try { if (!Directory.exists()) { Directory.mkdirs(); } if (!Directory.canWrite()) { throw new Exception("Directory not writable"); } FileOutputStream fos = new FileOutputStream(outputFile); if (fos != null) { b.compress(Bitmap.CompressFormat.PNG, 90, fos); fos.close(); } } catch (Exception e) { String screenshotError = String.format("Error taking screenshot: %s", e.toString()); throw new Exception(screenshotError); } } </code></pre> Permissions set in the application I'm testing: <pre><code><uses-permission android:name="android.permission.CHANGE_CONFIGURATION"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> </code></pre>
Tags
<android><testing><robotium>
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Programmatic screenshot on android: setDrawingCacheEnabled throws a CalledFromWrongThreadException
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