How can I use Intent in postDelayed using Android?

Question

This is for a splash screen. I've followed the tutorial but it's still not working. It keeps on getting an error.

This is my code:

package id.ac.umn.finalproject;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
public class MainActivity extends AppCompatActivity {
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 Intent startApp = new Intent(MainActivity.this, PemasukanActivity.class);
 new Handler().postDelayed(startActivity(startApp), 3000);
 }
}

Answer 1

The correct way to create a Splash screen is as follows

style.xml

 <style name="SplashStyle" parent="Theme.MaterialComponents.DayNight.NoActionBar">
 <item name="android:windowBackground">@drawable/splash</item>
 </style>

Splash.xml

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
 <item android:drawable="@color/black" /> // background color
 <item
 android:drawable="@drawable/ic_launcher" /> // logo
 android:gravity="center" />
</layer-list>

Manifest

<activity
 android:name=".SplashActivity"
 android:exported="true"
 android:noHistory="true"
 android:theme="@style/SplashStyle">
 <intent-filter>
 <action android:name="android.intent.action.MAIN" />
 <category android:name="android.intent.category.LAUNCHER" />
 </intent-filter>
 </activity>

SplashActivity.java

public class SplashActivity extends AppCompatActivity {
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
// setContentView(R.layout.activity_splash); // No need setContentView
 
 Intent intent = new Intent(SplashActivity.this,MainActivity.class);
 startActivity(intent);
 }

Answer 2

In Kotlin try this:

Handler(Looper.getMainLooper()).postDelayed({
 Intent startApp = new Intent(MainActivity.this, PemasukanActivity.class);
 startActivity(startApp)
 }, 3000)