function getbigfile(url, filepath) {
importClass(android.app.AlertDialog);
importClass(android.app.ProgressDialog);
importClass(android.content.DialogInterface);
importClass(android.widget.EditText);
importClass(android.widget.ImageView);
importClass(android.graphics.drawable.GradientDrawable);
importClass(android.view.WindowManager);
importClass(android.view.View);
importClass(android.view.Gravity);
importClass(android.widget.Toast);
importClass(Packages.androidx.recyclerview.widget.LinearSmoothScroller);
importClass(android.graphics.Color);
importClass(Packages.androidx.recyclerview.widget.LinearLayoutManager);
importClass(Packages.androidx.recyclerview.widget.RecyclerView);
const changeByte = (byte) => {
let size = "";
if (byte < 0.1 * 1024) {
size = byte.toFixed(2) + 'B';
} else if (byte < 0.1 * 1024