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How to make a TextView scrollable in Kotlin Android

How to make a TextView scrollable in Kotlin Android.

Here's a step-by-step tutorial on how to make a TextView scrollable in Kotlin Android:

Step 1: Create a new Android project​

Start by creating a new Android project in Android Studio. Choose an appropriate project name and package name.

Step 2: Open the layout file​

Open the layout file where you want to add the scrollable TextView. This file is usually located in the res/layout directory and has an XML extension.

Step 3: Add a ScrollView​

To make the TextView scrollable, you need to wrap it inside a ScrollView. Add the following code to your layout file:

<ScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <!-- Your other layout components here -->

    <TextView
        android:id="@+id/scrollableTextView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Lorem ipsum dolor sit amet, consectetur adipiscing elit. ..."
        android:maxLines="10"
        android:scrollbars="vertical" />
    
    <!-- Your other layout components here -->

</ScrollView>

In this example, we have added a ScrollView and a TextView inside it. Make sure to replace the android:text attribute with your desired text. The android:maxLines attribute limits the number of visible lines, and the android:scrollbars attribute enables vertical scrolling.

Step 4: Access the TextView in Kotlin code​

To manipulate the TextView programmatically, you need to access it in your Kotlin code. Open the corresponding Kotlin file (usually named MainActivity.kt or similar) and add the following code inside the onCreate method:

val scrollableTextView = findViewById<TextView>(R.id.scrollableTextView)
scrollableTextView.movementMethod = ScrollingMovementMethod.getInstance()

This code retrieves the TextView using its ID and sets the movement method to enable scrolling.

Step 5: Run the app​

Build and run your app on an emulator or physical device. You should now see a scrollable TextView with the specified text.

Congratulations! You have successfully made a TextView scrollable in Kotlin Android. You can customize the appearance and behavior of the ScrollView and TextView according to your requirements.

Note: If the text content is dynamic and fetched from an external source, you may need to update the TextView programmatically using the scrollableTextView.text property.