AndroidManifest.xml file
XML
<? xml version = "1.0" encoding = "utf-8" ?> < manifest xmlns:android = "http://schemas.android.com/apk/res/android" package = "i.apps.fadeinout" > < application android:allowBackup = "true" android:icon = "@mipmap/ic_launcher" android:label = "@string/app_name" android:roundIcon = "@mipmap/ic_launcher_round" android:supportsRtl = "true" android:theme = "@style/AppTheme" > < activity android:name = ".MainActivity" > < intent-filter > < action android:name = "android.intent.action.MAIN" /> < category android:name = "android.intent.category.LAUNCHER" /> </ intent-filter > </ activity > </ application > </ manifest > |
Android Fade In/Out in Kotlin
In Android Animations are the visuals that are added to make the user interface more interactive, clear and good looking. Fade In and Fade out animations are used to modify the appearance of any view over a set interval of time so that user can be notified about the changes that are occurring in our application.
In this article we will be discussing how to create a Fade In/Out animation in Kotlin .
XML Attributes | Description |
---|---|
android:duration | It is used to specify the duration of animation |
android:fromAlpha | It is the starting alpha value for the animation, where 1.0 means fully opaque and 0.0 means fully transparent |
android:toAlpha | It is the ending alpha value |
android:id | Sets unique id of the view |
First step is to create a new Project in Android Studio. For this follow these steps:
- Click on File, then New and then New Project and give name whatever you like
- Then, select Kotlin language Support and click next button.
- Select minimum SDK, whatever you need
- Select Empty activity and then click finish.
After that, we need to design our layout. For that we need to work with the XML file. Go to app > res > layout and paste the following code: