package com.sierisimo.idareyoutobeawesome;

import android.content.Intent;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class SplashActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_splash);
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                final Intent mainIntent = new Intent(SplashActivity.this, MainActivity.class);
                startActivity(mainIntent);
                finish();
            }
        }, 3000);
    }
}

package com.sierisimo.idareyoutobeawesome;

import android.content.Intent;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class SplashActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_splash);
        
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                final Intent mainIntent = new Intent(SplashActivity.this, MainActivity.class);
                startActivity(mainIntent);
                finish();
            }
        }, 3000);
    }
}

fix #1 and fix #5 The activity_splas contains an imagen in the center. And after three secons it change to the activity_main view