Creating a new directory using Kotlin, Mkdir() doesn't work

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挽巷
挽巷 2021-02-14 05:19
var filename = \"blesson.txt\"
var wallpaperDirectory = File(\"/sdcard/Wallpaper\")
 wallpaperDirectory.mkdirs()
val outputFile = File(wallpaperDirectory, filename)
val          


        
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  • 2021-02-14 05:32

    You can also use also to do this:

    File("path_to_file").also {
                                  file -> file.parentFile.mkdirs()
                              }.writeBytes(bytes)
    
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  • 2021-02-14 05:33

    This works perfectly on Kotlin

    class MainActivity : AppCompatActivity() {
    
      override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        var filename = "blesson.txt"
        // create a File object for the parent directory
        val wallpaperDirectory = File("/sdcard/Wallpaper/")
        // have the object build the directory structure, if needed.
        wallpaperDirectory.mkdirs()
        // create a File object for the output file
        val outputFile = File(wallpaperDirectory, filename)
        // now attach the OutputStream to the file object, instead of a String representation
        try {
          val fos = FileOutputStream(outputFile)
        } catch (e: FileNotFoundException) {
          e.printStackTrace()
        }
    
      }
    }
    
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