Android Splash Screen with Kotlin

Android Splash Screen is the 1st screen visible to user when app launches. Splash screen displays some animations or App logo for a short time while some data for the next screen are fetched.

Here we are going to implement a Splash Screen for Android with Kotlin.

Splash Screen is very common to most of the Android Applications. It is very easy to create Splash Screen using Handler class.

Create a Style resource

Update your style.xml file as shown below

style.xml

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
    </style>

</resources>

Create Layout XML file for SplashScreen

activity_splash.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:background="#464545"
    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=".MainActivity">

    <ImageView
        android:id="@+id/image"
        android:src="@drawable/kotlincodes"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_centerInParent="true"
        />
    <TextView
        android:id="@+id/text"
        android:textColor="#fff"
        android:gravity="center"
        android:text="kotlincodes.com"
        android:layout_below="@id/image"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <ProgressBar
        android:layout_below="@id/text"
        android:layout_centerHorizontal="true"
        android:padding="6dp"
        android:layout_width="45dp"
        android:layout_height="45dp" />

</RelativeLayout>

This layout contains an ImageViw ,TextView and a ProgressBar.

You can replace android:src of the ImageView with your own Image.

Create Splash Screen Activity Class

Here we uses a Handler to make a small delay. You can implement data fetching or any function in postDelayed method in Handler.

SplashScreenActivity.kt

package com.kotlincodes.splashscreenwithkotlin

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

class SplashScreenActivity : AppCompatActivity() {
    private val SPLASH_TIME_OUT:Long=3000 // 3 sec
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_splash)


        Handler().postDelayed({
            // This method will be executed once the timer is over
            // Start your app main activity

            startActivity(Intent(this,MainActivity::class.java))

            // close this activity
            finish()
        }, SPLASH_TIME_OUT)
    }
}

Create a MainActivity

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:background="#464545"
    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=".MainActivity">

    <TextView
        android:textSize="22dp"
        android:layout_centerInParent="true"
        android:text="Home Page"
        android:textColor="#fff"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</RelativeLayout>

MainActivity.kt

package com.kotlincodes.splashscreenwithkotlin

import android.support.v7.app.AppCompatActivity
import android.os.Bundle

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
    }
}

Add SplashScreen Activity as Launch page in manifest

Add the below code in manifets.xml file under application tag.

<activity android:name=".SplashScreenActivity"
            android:theme="@style/AppTheme.NoActionBar"
            >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".MainActivity" />

That’s it! Now run the project!

The full source code is available here.

kotlincodes/Android-SplashScreen-with-Kotlin

Contribute to kotlincodes/Android-SplashScreen-with-Kotlin development by creating an account on GitHub.

Thanks for reading!

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