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How to get the text from an EditText in Kotlin Android

How to get the text from an EditText in Kotlin Android.

Here's a step-by-step tutorial on how to get the text from an EditText 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 set the minimum SDK version to at least 21.

Step 2: Design the user interface​

Open the activity_main.xml layout file and add an EditText element inside the root layout. Give it an id attribute to reference it in the Kotlin code later.

<EditText
    android:id="@+id/editText"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="Enter text here" />

Step 3: Initialize the EditText in the Kotlin code​

Open the MainActivity.kt file and declare a variable to hold the EditText view. Inside the onCreate() method, use the findViewById() method to initialize the EditText by its id.

val editText = findViewById<EditText>(R.id.editText)

Step 4: Get the text from the EditText​

To retrieve the text entered by the user, use the getText() method on the EditText view. This will return an Editable object that can be converted to a String using the toString() method.

val text = editText.text.toString()

Step 5: Use the retrieved text​

Now that you have the text from the EditText, you can use it for various purposes, such as displaying it in a TextView or performing some action based on the input.

Here's an example of displaying the text in a TextView with id textView:

val textView = findViewById<TextView>(R.id.textView)
textView.text = text

Step 6: Handle empty input or validation​

It's a good practice to handle cases where the user leaves the EditText empty or when you need to validate the input. You can check if the text is empty using the isEmpty() method.

if (text.isEmpty()) {
    // Handle empty input
} else {
    // Perform action with the text
}

Step 7: Run the app​

Build and run the Android app on an emulator or physical device. Enter some text in the EditText field and click a button or perform any other action to trigger the retrieval of the text.

That's it! You've successfully retrieved the text from an EditText in Kotlin Android. You can now use the retrieved text for further processing or display it in other views as needed.