How To Get The Total Internal Storage Size Including System Usage In Android (Kotlin)?

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How to Get the Total Internal Storage Size Including System Usage in Android (Kotlin)

Developing a file manager app in Kotlin requires retrieving the total size of the internal storage, including the space occupied by the system. This information is crucial for users to understand how much space is available for storing files and data. In this article, we will explore how to get the total internal storage size including system usage in Android using Kotlin.

Internal storage refers to the storage space available on the device's internal memory. It is used to store apps, data, and other files. The internal storage is divided into two main sections: the system partition and the user data partition. The system partition stores the operating system, apps, and other system files, while the user data partition stores user data, such as files, photos, and videos.

Retrieving Internal Storage Size Using StatFs

The StatFs class is a built-in Android class that provides information about the file system. It can be used to retrieve the total size of the internal storage, including the space occupied by the system. However, the StatFs class has some limitations. It only provides information about the file system, and it does not account for the space occupied by the system.

Using Kotlin to Retrieve Internal Storage Size

To retrieve the total internal storage size including system usage in Android using Kotlin, we can use the following code:

import android.os.StatFs
import android.os.Build

fun getInternalStorageSize(context: Context): Long {
val stat = StatFs(context.filesDir.path)
var totalSize = 0L


if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
    val blockSize = stat.blockSizeLong
    val totalBlocks = stat.blockCountLong
    totalSize = blockSize * totalBlocks
} else {
    val blockSize = stat.blockSize
    val totalBlocks = stat.blockCount
    totalSize = blockSize * totalBlocks
}

return totalSize



}

This code uses the StatFs class to retrieve the total size of the internal storage. It first checks if the device is running Android 4.3 (Jelly Bean MR2) or later. If it is, it uses the blockSizeLong and blockCountLong methods to retrieve the total size. If the device is running an earlier version of Android, it uses the blockSize and blockCount methods.

Calculating System Usage

To calculate the system usage, we need to subtract the free space from the total size. We can use the following code to calculate the free space:

fun getFreeSpace(context: Context): Long {
    val stat = StatFs(context.filesDir.path)
    var freeSpace = 0L

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
    freeSpace = stat.availableBlocksLong * stat.blockSizeLong
} else {
    freeSpace = stat.availableBlocks * stat.blockSize
}

return freeSpace



}

This code uses the StatFs class to retrieve the free space. It first checks if the device is running Android 4.3 (Jelly Bean MR2) or later. If it is, it uses the availableBlocksLong and blockSizeLong methods to retrieve the free space. If the device is running an earlier version of Android, it uses the availableBlocks and blockSize methods.

Calculating System Usage Percentage

To calculate the system usage percentage, we can use the following code:

fun getSystemUsagePercentage(context: Context): Double {
    val totalSize = getInternalStorageSize(context)
    val freeSpace = getFreeSpace(context)
    val systemUsage = totalSize - freeSpace

return (systemUsage / totalSize) * 100



}

This code calculates the system usage percentage by subtracting the free space from the total size and dividing the result by the total size.

Example Use Case

Here is an example use case for the code above:

fun main() {
    val context = Context()
    val totalSize = getInternalStorageSize(context)
    val freeSpace = getFreeSpace(context)
    val systemUsage = getSystemUsagePercentage(context)

println("Total Size: $totalSize bytes")
println("Free Space: $freeSpace bytes")
println("System Usage: $systemUsage%")



}

This code retrieves the total size, free space, and system usage percentage and prints the results to the console.

In this article, we explored how to get the total internal storage size including system usage in Android using Kotlin. We used the StatFs class to retrieve the total size and free space, and calculated the system usage percentage by subtracting the free space from the total size. We also provided an example use case to demonstrate how to use the code in a real-world scenario.
Q&A: How to Get the Total Internal Storage Size Including System Usage in Android (Kotlin)

In our previous article, we explored how to get the total internal storage size including system usage in Android using Kotlin. We used the StatFs class to retrieve the total size and free space, and calculated the system usage percentage by subtracting the free space from the total size. In this article, we will answer some frequently asked questions about the code and provide additional information to help you understand how to use it in your Android app.

Q: What is the StatFs class?

A: The StatFs class is a built-in Android class that provides information about the file system. It can be used to retrieve the total size of the internal storage, including the space occupied by the system.

Q: Why do I need to use the StatFs class?

A: You need to use the StatFs class to retrieve the total size of the internal storage, including the space occupied by the system. This information is crucial for users to understand how much space is available for storing files and data.

Q: How do I use the StatFs class in my Android app?

A: To use the StatFs class in your Android app, you need to create an instance of the class and call the getInternalStorageSize() method to retrieve the total size of the internal storage. You can then use the getFreeSpace() method to retrieve the free space and calculate the system usage percentage.

Q: What is the difference between blockSizeLong and blockSize?

A: blockSizeLong and blockSize are two different methods of the StatFs class that return the block size of the file system. blockSizeLong is used for devices running Android 4.3 (Jelly Bean MR2) or later, while blockSize is used for devices running earlier versions of Android.

Q: How do I calculate the system usage percentage?

A: To calculate the system usage percentage, you need to subtract the free space from the total size and divide the result by the total size. You can then multiply the result by 100 to get the system usage percentage.

Q: What is the availableBlocksLong method?

A: The availableBlocksLong method is a method of the StatFs class that returns the number of available blocks in the file system. It is used to retrieve the free space.

Q: How do I use the availableBlocksLong method in my Android app?

A: To use the availableBlocksLong method in your Android app, you need to create an instance of the StatFs class and call the availableBlocksLong method to retrieve the number of available blocks. You can then multiply the result by the block size to get the free space.

Q: What is the getSystemUsagePercentage() method?

A: The getSystemUsagePercentage() method is a method that calculates the system usage percentage by subtracting the free space from the total size and dividing the result by the total size. It then multiplies the result by 100 to get the system usage percentage.

Q: How do I use the getSystemUsagePercentage() method in my Android app?

A: To use the getSystemUsagePercentage() method in your Android app, you need to create an instance of the StatFs class and call the getSystemUsagePercentage() method to retrieve the system usage percentage.

In this article, we answered some frequently asked questions about the code and provided additional information to help you understand how to use it in your Android app. We hope this article has been helpful in answering your questions and providing you with the information you need to use the StatFs class in your Android app.