There are 2 common methods of implementing splash screens
and will find the right way:
1: Using Timers (the bad)
2: Using a Launcher Theme (The Right way)
you can check this link where you can learn to implement both splash screen
https://medium.com/geekculture/implementing-the-perfect-splash-screen-in-android-295de045a8dc

/****** Create Thread that will sleep for 5 seconds****/ Thread background = new Thread() { public void run() { try {	// Thread will sleep for 5 seconds	sleep(5*1000);	// After 5 seconds redirect to another intent Intent i=new Intent(getBaseContext(),FirstScreen.class); startActivity(i);	//Remove activity	finish(); } catch (Exception e) {	} } };	// start thread	background.start();