How do I make a screenshot using Opencv (android) and convert it to an Image. I myself have made a code for screenshot see [link here](http://stackoverflow.com/questions/39200942/black-screenshot-android-opencv). The output of this image is black which is not I wanted. Is there also a possibility of using a mat here?
public void camera_b(View v)
{
String path = Environment.getExternalStorageDirectory().toString() + "/" + "hellp.jpg";
v = getWindow().getDecorView().getRootView();
v.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(v.getDrawingCache());
v.setDrawingCacheEnabled(false);
OutputStream out = null;
File imageFile = new File(path);
try {
out = new FileOutputStream(imageFile);
// choose JPEG format
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
} catch (FileNotFoundException e) {
// manage exception
} catch (IOException e) {
// manage exception
} finally {
try {
if (out != null) {
out.close();
}
} catch (Exception exc) {
}
}
}
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