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August 26, 2020 01:12 pm GMT

How to add Splash Screen in a React Native Android App?

Hi there!

The reason why you're here for this is probably because you couldn't find the correct, updated and easiest solution to this till now!

But now, worry no more! You 've arrived at the right place. I will lay out all the steps over here, which I did to implement it within minutes! Let's get this thing started!

Step #1

Go to app/src/main/java/[packageName] and create a new file SplashActivity.java and copy-paste the following code inside it.

package com.packagename; // Replace this with your package nameimport 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();    }}

Step #2

Go to app/src/main/AndroidManifest.xml and modify it as follows to use SplashActivity:

Add the following activity inside the tag.

<activity    android:name=".SplashActivity"    android:theme="@style/SplashTheme"    android:label="@string/app_name"    >    <intent-filter>        <action android:name="android.intent.action.MAIN" />        <category android:name="android.intent.category.LAUNCHER" />    </intent-filter></activity>

Remove the following intent from the MainActivity tag.

<intent-filter>    <action android:name="android.intent.action.MAIN" />    <category android:name="android.intent.category.LAUNCHER" /></intent-filter>

And add android:exported="true" inside that activity.

Now, your AndroidManifest.xml should be looking like this:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"  package="com.packagename">    <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"      android:allowBackup="false"      android:theme="@style/AppTheme">      <activity        android:name=".SplashActivity"        android:theme="@style/SplashTheme"        android:label="@string/app_name"        >        <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|uiMode"        android:launchMode="singleTask"        android:windowSoftInputMode="adjustResize"        android:exported="true"        >      </activity>      <activity android:name="com.facebook.react.devsupport.DevSettingsActivity" />    </application></manifest>

Step #3

Now, we will declare a SplashTheme for SplashActivity. Go to app/src/main/res/values/styles.xml and add the following style inside <resources>.

<style name="SplashTheme" parent="Theme.AppCompat.Light.NoActionBar">        <item name="android:background">@drawable/background_splash</item>        <item name="android:statusBarColor">@color/background</item></style>

Step #4

Go to android\app\src\main\res\values and create a file colors.xml if not present already.
We used a background color constant above, so we must add it to our colors.xml file.

<?xml version="1.0" encoding="utf-8"?><resources>    <color name="background">#fff</color>    // Insert your background color for the splash screen</resources>

Step #5

Go to app/src/main/res/drawable and place your splash screen (.png) here and also create a file background_splash.xml with the following code:

<?xml version="1.0" encoding="utf-8"?><layer-list xmlns:android="http://schemas.android.com/apk/res/android">    <item        android:drawable="@color/background" />    <item        android:drawable="@drawable/splash_screen"        android:height="300dp"        android:width="300dp"        android:gravity="center"    /></layer-list>

If the size of your splash screen is equal to the size of device screen, then remove android:height and android:width from the above mentioned <item> tag.

Step #6

Install react-native-splash-screen module in your project and then import SplashScreen from it in your App.js file.

import SplashScreen from 'react-native-splash-screen';

We need to display the splash screen only till the first component is mounted, and to do that make a useEffect hook inside your App component body as follows:

Don't forget to import useEffect from 'react'.

useEffect(() => {    SplashScreen.hide();  }, []);

Step #7

Go to app/src/main/java/[packageName]/MainActivity.java and import the the following.

import org.devio.rn.splashscreen.SplashScreen;import android.os.Bundle;

Add this method to the top of MainActivity class.

@Override  protected void onCreate(Bundle savedInstanceState) {    SplashScreen.show(this, R.style.SplashStatusBarTheme);    super.onCreate(savedInstanceState);  }

Step #8

Go to android/app/src/main/res/values/styles.xml to add SplashStatusBarTheme just like we did in Step #3.

<style name="SplashStatusBarTheme" parent="SplashScreen_SplashTheme">        <item name="android:statusBarColor">@color/background</item></style>

If you don't do this, then StatusBar will change color to black when the JS code of app will load.

Step #9

Go to android/app/src/main/res/ and create a new folder layout if it doesn't already exist. Inside that folder, create a file launch_screen.xml (this file is needed by react-native-splash-screen library). Inside that file, create a layout using the previously created background as follows:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="@drawable/background_splash" />

Step #10

Go to android/app/src/main/res/values/colors.xml and add the following tag just like we did in step #4, otherwise the app will crash. Don't change the color value.

<color name="primary_dark">#000</color>

And that's it! We did it! Your splash screen has been added to your app! Go and check it now! Thank me later!

Hope you learned something new from this!

PS: If you have any confusion or encounter any error while following the above mentioned steps, then feel free to comment below, I will be happy to help you resolve it.

Have a nice day!


Original Link: https://dev.to/cmcodes/how-to-add-splash-screen-in-a-react-native-android-app-287l

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