Proses Menampilkan Loading Android

package com.example.myblogshare;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.ProgressBar;

public class MainActivity extends AppCompatActivity {

    ProgressBar loading;

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

        loading = (ProgressBar) findViewById(R.id.loading);
        loading.setVisibility(View.VISIBLE);

    }
}