SafHelper

Open source Android library for files writing on SD card.

Features

SafHelper using Storage Access Framework (SAF) to retrieve permission, create directories and write files on SD card.

Integration

Add dependency in build.gradle:

compile 'ru.bartwell:safhelper:1.0.0'

Usage

private lateinit var safHelper: SafHelper

private fun onButtonClick() {
    writeFile(true)
}

private fun writeFile(requestPermissions: Boolean) {
    val userFile = File(main_path.text.toString())

    if (userFile.parent == null) {
        showToast("Wrong path")
    } else {
        safHelper = SafHelper(this, userFile.parent)
        if (safHelper.isApplicable()) {
            if (safHelper.isPermissionGranted()) {
                try {
                    if (safHelper.mkdirs(userFile.parent)) {
                        val outputStream = safHelper.createFile(userFile.path)
                        outputStream.use {
                            it.write("Text in the file".toByteArray())
                        }
                        showToast("Success")
                    }
                } catch (e: Exception) {
                    e.printStackTrace()
                    showToast("Error: " + e.message)
                }
            } else {
                if (requestPermissions) {
                    safHelper.requestPermissions(this)
                } else {
                    showToast("Permissions not granted")
                }
            }
        } else {
            showToast("File is not on SD Card or Android version < 5.0")
        }
    }
}

override fun onActivityResult(requestCode: Int, resultCode: Int, resultData: Intent?) {
    if (safHelper.onActivityResult(this, requestCode, resultCode, resultData)) {
        writeFile(false)
    }
}

License

Copyright © 2018 Artem Bazhanov

SafHelper is provided under an Apache 2.0 License.