ProgressBar is a built-in widget in Android that provides visual feedback to the user about the progress of a particular task or operation. It is commonly used to indicate loading, file downloads, or any process that takes time to complete. The ProgressBar can be displayed in different styles such as horizontal (a progress bar that fills from left to right) or spinner (a circular indeterminate progress indicator). Using ProgressBar in your Android application is a straightforward process. You start by adding the ProgressBar widget to your XML layout file, then initialize and reference it in your activity or fragment code. You can customize the appearance and behavior of the ProgressBar by setting attributes such as style, color, size, visibility, and progress value. Once the ProgressBar is set up, you can update the progress dynamically based on your application logic. For determinate progress bars, you can set the progress value directly or increment it as the task progresses. For indeterminate progress bars, the animation automatically shows continuous progress without specifying a specific value.

Add the ProgressBar widget to your XML layout file:

  <ProgressBar
        android:id="@+id/progressBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_above="@id/idBtnDisplayProgress"
        android:layout_centerHorizontal="true"
        android:layout_margin="20dp"
        android:visibility="gone" />

In your activity or fragment, initialize the ProgressBar object and find its reference from the XML layout:

 ProgressBar progressBar= findViewById(R.id.progressBar);

Customize the appearance and behavior of the ProgressBar as needed. You can set attributes such as color, size, visibility, and progress value.

progressBar.getProgressDrawable().setColorFilter(
    Color.BLUE, android.graphics.PorterDuff.Mode.SRC_IN);

If needed, add listeners to handle events related to the ProgressBar. For instance, you can add an OnSeekBarChangeListener to respond to user interaction with the progress bar: Now, you add this on button onclicklistner, then you can work do visibility GONE or VISIBLE

boolean isProgressVisible = false;
showProgressBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                if (isProgressVisible) {

                    showProgressBtn.setText("Show Progress Bar");

                    progressBar.setVisibility(View.GONE);

                    isProgressVisible = false;
                } else {
                    isProgressVisible = true;
                    showProgressBtn.setText("Hide Progress Bar");
                    progressBar.setVisibility(View.VISIBLE);
                }
            }
        });