animation button

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/backgroundColor"
    tools:context=".class6.book_view">

    <androidx.cardview.widget.CardView
        android:id="@+id/toolBar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        app:cardElevation="2dp"
        app:cardBackgroundColor="@color/primaryColor"
        android:background="@color/white" />





    <androidx.viewpager.widget.ViewPager
        android:id="@+id/viewPager"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constraintTop_toBottomOf="@id/toolBar"
        app:layout_constraintBottom_toBottomOf="parent"
        />


    <FrameLayout
        android:id="@+id/frameLayout"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintTop_toBottomOf="@id/toolBar"
        app:layout_constraintVertical_bias="1.0"
        tools:layout_editor_absoluteX="-53dp" />

    <HorizontalScrollView
        android:id="@+id/category"
        android:layout_width="match_parent"
        app:layout_constraintTop_toBottomOf="@+id/toolBar"
        android:layout_height="wrap_content"><LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <TextView
            android:id="@+id/notes"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Notes"
            android:layout_margin="@dimen/_5sdp"
            android:textColor="@color/textPrimaryColor"
            android:textSize="@dimen/_14sdp"
            android:padding="@dimen/_5sdp"
            android:background="@color/white"
            android:elevation="2sp"
            />

        <TextView
            android:id="@+id/nctbBooks"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="NCTB Books"
            android:layout_margin="@dimen/_5sdp"
            android:textColor="@color/textPrimaryColor"
            android:textSize="@dimen/_14sdp"
            android:padding="@dimen/_5sdp"
            android:background="@color/white"
            android:elevation="2sp"
            />

        <TextView
            android:id="@+id/guideBooks"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Guide Books"
            android:layout_margin="@dimen/_5sdp"
            android:textColor="@color/textPrimaryColor"
            android:textSize="@dimen/_14sdp"
            android:padding="@dimen/_5sdp"
            android:background="@color/white"
            android:elevation="2sp"
            />

    </LinearLayout></HorizontalScrollView>

    <ImageView
        android:id="@+id/btnGoneVisible"
        android:layout_width="@dimen/_30sdp"
        android:layout_height="@dimen/_30sdp"
        app:layout_constraintEnd_toEndOf="parent"
        android:padding="@dimen/_5sdp"
        android:tag="SHOWING"
        android:layout_margin="@dimen/_5sdp"
        android:background="@drawable/circle_shap"
        app:layout_constraintTop_toBottomOf="@id/toolBar"
        android:src="@drawable/arrow_back" />







    <com.google.android.gms.ads.AdView
        xmlns:ads="http://schemas.android.com/apk/res-auto"
        android:id="@+id/adView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        ads:layout_constraintStart_toStartOf="parent"
        ads:layout_constraintEnd_toEndOf="parent"
        ads:layout_constraintBottom_toBottomOf="parent"
        ads:adSize="BANNER"
        ads:adUnitId="@string/admob_banner_id" />
</androidx.constraintlayout.widget.ConstraintLayout>

package com.apdim3.usolve.class6;

import android.os.Bundle;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.HorizontalScrollView;
import android.widget.ImageView;
import android.widget.TextView;


import androidx.appcompat.app.AppCompatActivity;
import androidx.core.content.ContextCompat;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;


import com.apdim3.usolve.R;


public class book_view extends AppCompatActivity {

    FrameLayout frameLayout;
    ImageView btnGoneVisible;
    HorizontalScrollView category;
    private TextView notes, nctbBooks, guideBooks;
    private int selectedColor, defaultColor;



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

        frameLayout = findViewById(R.id.frameLayout);
        category = findViewById(R.id.category);
        btnGoneVisible = findViewById(R.id.btnGoneVisible);
        notes = findViewById(R.id.notes);
        nctbBooks = findViewById(R.id.nctbBooks);
        guideBooks = findViewById(R.id.guideBooks);



        btnGoneVisible.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (category.getVisibility() == View.VISIBLE) {
                    hideWithAnimation(category);
                    btnGoneVisible.setImageResource(R.drawable.arrow_forward); // Update icon if needed
                } else {
                    showWithAnimation(category);
                    btnGoneVisible.setImageResource(R.drawable.arrow_back); // Update icon if needed
                }
            }
        });

        selectedColor = ContextCompat.getColor(this, R.color.selectedColor);
        defaultColor = ContextCompat.getColor(this, R.color.white);


        // Load the default fragment

    } //========================== End OnCreate ======================

    //-------------------Button Selected --------------------------

    private void resetButtonColors() {
        notes.setBackgroundColor(defaultColor);
        nctbBooks.setBackgroundColor(defaultColor);
        guideBooks.setBackgroundColor(defaultColor);
    }

    private void loadFragment(Fragment fragment) {
        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction transaction = fragmentManager.beginTransaction();
        transaction.replace(R.id.frameLayout, fragment);
        transaction.commit();
    }

    //================== Animation Start =====================
    private void hideWithAnimation(final View view) {
        view.animate()
                .alpha(0.0f)
                .setDuration(400)
                .withEndAction(new Runnable() {
                    @Override
                    public void run() {
                        view.setVisibility(View.GONE);
                    }
                });
    }

    private void showWithAnimation(final View view) {
        view.setAlpha(0.0f);
        view.setVisibility(View.VISIBLE);
        view.animate()
                .alpha(1.0f)
                .setDuration(400)
                .setListener(null);
    }
}