A splash screen is the first thing user sees after opening the app, and it usually shows an app logo with optional animations. This post covers setup for Android devices. iOS setup will be covered additionally.
Prerequisites
installed Android studio
bootstrapped app
react-native-splash-screenpackage installed
npx react-native init SplashScreenApp
cd SplashScreenApp
npm i react-native-splash-screen
JavaScript setup
Hide the splash screen when the app is ready
// App.js
// ...
useEffect(() => SplashScreen.hide(), []);
// ...
Native setup
Extending MainActivity class with onCreate method
file: android/app/src/main/java/com/splashscreenapp/MainActivity.java
import org.devio.rn.splashscreen.SplashScreen;
import android.os.Bundle;
// ...
@Override
protected void onCreate(Bundle savedInstanceState) {
SplashScreen.show(this, R.style.SplashTheme, true);
super.onCreate(savedInstanceState);
}
// ...
Adding splash screen activity with the theme into the Android manifest
file: android/app/src/main/AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.splashscreenapp">
<uses-permission android:name="android.permission.INTERNET" />
<application
android:name=".MainApplication"
android:label="@string/app_name"
android:icon="@mipmap/ic_launcher"
android:roundIcon="@mipmap/ic_launcher_round"
android:allowBackup="false"
android:theme="@style/AppTheme">
<activity
android:name=".SplashActivity"
android:theme="@style/SplashTheme"
android:label="@string/app_name"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
android:windowSoftInputMode="adjustResize"
android:exported="true"/>
<activity android:name="com.facebook.react.devsupport.DevSettingsActivity" />
</application>
</manifest>
Implementing SplashActivity class
file: android/app/src/main/java/com/splashscreenapp/SplashActivity.java
package com.splashscreenapp;
import android.content.Intent;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
public class SplashActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
finish();
}
}
Themes setup
file: android/app/src/main/res/values/styles.xml
<resources>
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<item name="android:statusBarColor">@color/theme_bg</item>
<item name="android:windowBackground">@drawable/background_splash</item>
</style>
<style name="SplashTheme" parent="Theme.AppCompat.Light.NoActionBar">
<item name="android:background">@drawable/background_splash</item>
<item name="android:windowDisablePreview">true</item>
<item name="colorPrimaryDark">@color/theme_bg</item>
</style>
</resources>
Colors setup
file: android/app/src/main/res/values/colors.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="theme_bg">#2F3C7E</color>
</resources>
Adding config for background splash drawable
file: android/app/src/main/res/drawable/background_splash.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" android:opacity="opaque">
<item android:drawable="@color/theme_bg"/>
<item
android:width="300dp"
android:height="300dp"
android:drawable="@mipmap/splash_icon"
android:gravity="center" />
</layer-list>
Adding layout
file: android/app/src/main/res/layout/launch_screen.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/background_splash"
android:orientation="vertical">
</LinearLayout>
Images for splash screen
App Icon Generator can be used for generating the images. Open the Image Sets tab, choose 4X design base size, insert an image and generate corresponding images for the splash screen.
Store the downloaded images in mipmap (android/app/src/main/res/mipmap-*hdpi/splash_icon.png) folders.
Demo
The demo with the mentioned examples is available here.
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