How to take my custom view that i designed in XML and use it as a new view in my MainActivity

I designed what i want my custom view to look like:

<RelativeLayout>

    <ConstraintLayout>
        <ConstraintLayout>

            <TextView/>
            <ImageButton/>

        </ConstraintLayout>

        <ImageView/>

    </ConstraintLayout>
</RelativeLayout>

How do i implement this into my CustomView.java file so i can use it in MainActivity.java and activity_layout.xml?

I understand that i should use LayoutInflater but all explenations on how and why were in Kotlin or hindi and i don’t understand either

Certainly, I’ll guide you through the process of implementing your custom view in Java. You’re correct that you can use the LayoutInflater to inflate your custom view from a layout XML file. Let’s break down the steps:

Create Your Custom View Class:
Start by creating a Java class that extends RelativeLayout and serves as your custom view. Let’s call this class MyCustomView.

import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class MyCustomView extends RelativeLayout {

    private ConstraintLayout innerConstraintLayout;
    private ConstraintLayout nestedConstraintLayout;
    private TextView textView;
    private ImageButton imageButton;
    private ImageView imageView;

    public MyCustomView(Context context) {
        super(context);
        init(context);
    }

    public MyCustomView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    private void init(Context context) {
        LayoutInflater inflater = LayoutInflater.from(context);
        inflater.inflate(R.layout.custom_view_layout, this, true);

        // Initialize your views
        innerConstraintLayout = findViewById(R.id.innerConstraintLayout);
        nestedConstraintLayout = findViewById(R.id.nestedConstraintLayout);
        textView = findViewById(R.id.textView);
        imageButton = findViewById(R.id.imageButton);
        imageView = findViewById(R.id.imageView);
    }

    // Add methods to interact with your custom views
}

Create Your Custom View Layout:
Create an XML layout file that represents the visual layout of your custom view. Let’s name this layout file custom_view_layout.xml. Place this file in your res/layout directory.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/innerConstraintLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:id="@+id/nestedConstraintLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <TextView
                android:id="@+id/textView"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Hello" />

            <ImageButton
                android:id="@+id/imageButton"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/ic_launcher_foreground" />

        </androidx.constraintlayout.widget.ConstraintLayout>

        <ImageView
            android:id="@+id/imageView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/ic_launcher_foreground" />

    </androidx.constraintlayout.widget.ConstraintLayout>

</RelativeLayout>

Using Your Custom View in MainActivity:
Now, you can use your custom view in your MainActivity. Add an instance of your custom view to your activity’s layout XML file (activity_layout.xml) or directly add it programmatically in your MainActivity class.

MyCustomView customView = new MyCustomView(this);
// Set layout params if needed
setContentView(customView);