Programmatically screenshot from the parent’s View

The first necessary step is to add the appropriate permission to your AndroidManifest.xml.

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

The code, in one lump:

View rootView = childView.getRootView();
rootView.setDrawingCacheEnabled(true);
Bitmap bitmap = rootView.getDrawingCache();

ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 80, baos);
File file = new File(Environment.getExternalStoreDirectory() + "/my_cap.jpg");

try {
    file.createNewFile();
    FileOutputStream fos = new FileOutputStream(file);
    fos.write(baos.toByteArray());
    fos.close();
} catch(Exception e) {
    e.printStackTrace();
}

Where childView is or inherits from the View class.

Hopefully you can extrapolate from line 6 and the usage of an enum that formats other than JPEG exist and this is merely what I chose for this example code.  Likewise 80 is a value I decided on and is the desired quality of the output image; Only values from 0-100 are accepted.  (Even though png files ignore this value it is still necessary to include one and that its value falls within the 0-100 range)