Exact

AlertDialog.Builder builder;
                    AlertDialog alertDialog;

                    Context mContext = getApplicationContext();
                    LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(LAYOUT_INFLATER_SERVICE);
                    View layout = inflater.inflate(R.layout.custom_dialog,
                                                   (ViewGroup) findViewById(R.id.layout_root));

                    TextView text = (TextView) layout.findViewById(R.id.text);
                    text.setText("Hello, this is a custom dialog!");
                    ImageView image = (ImageView) layout.findViewById(R.id.image);
                    image.setImageResource(R.drawable.image);

                    builder = new AlertDialog.Builder(mContext);
                    builder.setView(layout);
                    alertDialog = builder.create();

                    alertDialog.show();