Create a Dynamic UI in Android from json Template

XML layouts are converted to Java objects at runtime, so you can simply write an XML which has a container Layout ( say Linear Layout ), inflate it at runtime, and add view programatically depending on the information received from server.

An example would be :
Creating a layout, and setting that as the Activity's content view.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    android:id="@+id/container"   /> 

Then somewhere in code:
Let's say that after parsing the JSON you have a List<Field> fields;

  LinearLayout linearLayout = (LinearLayout) findViewById(R.id.container);  for (Field f: fields) {    if (f.getType().equals("textbox")) {        TextView txtView = new TextView(this);        txtView.setText("Your e-mail");        txtView.setId(1);//need for better use        linearLayout.addView(txtView);    } else if (f.getType().equals("button")) {        //create a button similarly as above,and add it to the layout    }  }

I think you’re asking about Server Driven UI, please go through this link to know more about it:https://proandroiddev.com/dynamic-screens-using-server-driven-ui-in-android-262f1e7875c1