Set drag margin for Android Navigation Drawer

Here I've found a solution via reflections

DrawerLayout mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
Field mDragger = mDrawerLayout.getClass().getDeclaredField(
        "mLeftDragger");//mRightDragger for right obviously
mDragger.setAccessible(true);
ViewDragHelper draggerObj = (ViewDragHelper) mDragger
        .get(mDrawerLayout);

Field mEdgeSize = draggerObj.getClass().getDeclaredField(
        "mEdgeSize");
mEdgeSize.setAccessible(true);
int edge = mEdgeSize.getInt(draggerObj);

mEdgeSize.setInt(draggerObj, edge * 5); //optimal value as for me, you may set any constant in dp