Kotlin External Storage

External storage is a common way to store data and files on Android devices. In Kotlin, you can access external storage by using the ExternalStorage class. In this tutorial, we will discuss how to use external storage in Kotlin.

Syntax

To access external storage in Kotlin, use the following syntax:

val directory = Environment.getExternalStorageDirectory()

This will return the path to the external storage directory.

To save a file to external storage, use the following syntax:

val file = File(directory, "myFile.txt")
file.writeText("Hello, world!")

To read a file from external storage, use the following syntax:

val fileText = File(directory, "myFile.txt").readText()

Example

Let's say you want to save a text file to external storage. Here's an example of how you can do this in Kotlin:

val directory = Environment.getExternalStorageDirectory()
val file = File(directory, "myFile.txt")
file.writeText("Hello, world!")

Output

When you run the above code, a file called "myFile.txt" will be created in the external storage directory with the following contents:

Hello, world!

Explanation

In Kotlin, you can access external storage by using the ExternalStorage class. You can get the path to the external storage directory using the getExternalStorageDirectory() function.

To save a file to external storage, you can create a File object with the directory path and the file name. Then, you can write text to the file using the writeText() function.

To read a file from external storage, you can create a File object with the directory path and the file name. Then, you can read the text from the file using the readText() function.

Use

External storage can be used to store large files and data that can be accessed by other applications on the device. This can be useful for sharing files, backing up data, and more.

Important Points

• To read and write to external storage, you need the WRITE_EXTERNAL_STORAGE and READ_EXTERNAL_STORAGE permissions in your Android manifest file.
• The external storage directory may differ depending on the device and its configuration.

Summary

In this tutorial, we discussed how to access external storage in Kotlin. We covered the syntax, examples, output, explanation, use cases, and important points of using external storage in Kotlin. With this knowledge, you can now use external storage to store data and files on Android devices.