New Activity Android

 Main Activity 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#ddd"
    android:padding="20dp"
    tools:context=".MainActivity">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Shamim  Hossen!"
        android:textSize="30sp"
        android:gravity="center"
        />
<ImageView
    android:layout_marginTop="10dp"
    android:layout_width="match_parent"
    android:layout_height="200dp"
    android:src="@drawable/tashbeeh"
    android:scaleType="centerCrop"/>
    <Button
        android:layout_margin="10dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Click Here Our Button"
        />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:weightSum="3"
        android:orientation="horizontal">
        <Button
            android:layout_weight="1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Click"
            />
        <Button
            android:layout_weight="1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Click "
            />
        <Button
            android:layout_weight="1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Click"
            />

    </LinearLayout>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <TextView
            android:id="@+id/TExtViewf"
            android:layout_margin="10dp"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text=" Shamim Hosen "
            android:textSize="30dp"
            android:gravity="center"
            />
        <Button
            android:id="@+id/ClickButton"
            android:layout_margin="10dp"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Click Here Our Button"/>

    </LinearLayout>
</LinearLayout>

Manin Activity Java

package com.example.mypage;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import org.w3c.dom.Text;

public class MainActivity extends AppCompatActivity {
    TextView TxtViewf;
    Button ClickButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TxtViewf = findViewById(R.id.TExtViewf);
        ClickButton = findViewById(R.id.ClickButton);

        ClickButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                TxtViewf.setText("Shamim Hose");
                TxtViewf.setVisibility(View.GONE);
Toast.makeText(MainActivity.this,"shamim Hosen Is the best", Toast.LENGTH_LONG)
        .show();
            }
        });










    }
}