ChinaAppsRemover/app/src/main/java/com/chinaappsremover/ui/Splash.java

package com.chinaappsremover.ui;

import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;

import androidx.appcompat.app.ActionBar;
import androidx.appcompat.app.AppCompatActivity;

import com.chinaappsremover.R;

public class Splash extends AppCompatActivity {

    protected void onCreate(Bundle bundle) {
        super.onCreate(bundle);
        setContentView(R.layout.activity_splash);

        ActionBar supportActionBar = getSupportActionBar();
        if (supportActionBar != null) {
            supportActionBar.hide();
        }

        new Handler().postDelayed(new Runnable() {
            public void run() {
                Splash splash = Splash.this;
                splash.startActivity(new Intent(splash, MainActivity.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK));
                Splash.this.finish();
            }
        }, 2500);
    }
}