[Kotlin] Splash Screen

# create SplashScreenActivity

 

  ▶ acitivity_splash_screen.xml

<!-- splash.png가 있다는 전제 -->

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Activities.SplashScreenActivity">

    <ImageView
        android:id="@+id/iv_bg"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/splash"
        />
</androidx.constraintlayout.widget.ConstraintLayout>

 

  ▶ SplashScreenActivity.kt

import ...

class SplashScreenActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_splash_screen)

        iv_bg.alpha = 0f
        iv_bg.animate().setDuration(1500).alpha(1f).withEndAction{
            val intent = Intent(this, LoginActivity::class.java)
            startActivity(intent)
            overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out)
            finish()
        }
    }
}

 

 

# styles.xml

<resource>
    ...
	<style name="Splash" parent="Theme.MaterialComponents.Light.NoActionBar">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
        <item name="android:windowTranslucentNavigation">true</item>
        <item name="android:windowTranslucentStatus">true</item>
        <item name="android:windowFullscreen">true</item>
        <item name="windowNoTitle">true</item>
    </style>
    ...
</resource>

 

 

# AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest ...>
	...
    <application>
    	...
        <activity
            android:name=".Activities.SplashScreenActivity"
            android:theme="@style/Splash">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".MainActivity">
		...
    </application>
</manifest>