How to create XML file with program code for multiple Activities?

Question

Android

I created a header for several activities, which I add to them using the include tag
. The headera code itself:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/mainlayout"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <include layout="@layout/toolbar">
    </include>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="35dp"
        android:background="@color/colorRed">

        <Button
            android:layout_width="12dp"
            android:layout_height="12dp"
            android:layout_alignParentStart="true"
            android:layout_alignParentLeft="true"
            android:layout_centerVertical="true"
            android:layout_marginStart="38dp"
            android:layout_marginLeft="38dp"
            android:background="@drawable/icon_loupe" />

        <EditText
            android:id="@+id/text_search"
            android:layout_width="178dp"
            android:layout_height="34dp"
            android:layout_alignParentStart="true"
            android:layout_alignParentLeft="true"
            android:layout_alignParentBottom="true"
            android:layout_marginStart="58dp"
            android:layout_marginLeft="58dp"
            android:layout_marginBottom="0dp"
            android:background="@color/colorRed"
            android:hint="@string/search"
            android:inputType="text"
            android:textColor="@color/colorWhite"
            android:textColorHint="@color/colorWhite"
            android:textSize="10sp"
            android:fontFamily="@font/font_gotham_pro"

            android:visibility="visible" />

    </RelativeLayout>
</LinearLayout>

This header includes all the main elements, but I need to add a button click handler for them and some other logic components that can only be written in code. I could copy this piece of code with logic for each .java file that inherits AppCompatActivity, but I would like to create some kind of .java file that will describe all this logic and not have to make dirt. How can I do it?

Answer 1

a couple of ideas:
- make a fragment. Write the code in a fragment.
- create a handler class, which will be delegated to handle clicks, and so on
- create a custom view. Which will be immediately inserted (instead of include)
to choose from. Based on your abilities and application requirements.

Answer 2

So what's the problem with creating a "java file that inherits AppCompatActivity, in which all this logic will be described" and then inherit other activities from it?