creating folder not visible in file explorer

Question

Hi i am creating folder in external storage.first i need to check that Sd card is present or not.In my mobile i dont have sd card.i am using redmi mobile.Below is my code.I dnt have sd card bt i am getting sd card is mounted.Then i checked my internal storage i cant found the folder what i created.i had tried so many codes,please help me.i also added read and write external permission. my code is:`

String state;
        state=Environment.getExternalStorageState();

        if(Environment.MEDIA_MOUNTED.equals(state)){

            Toast.makeText(this, "Sd card found", Toast.LENGTH_SHORT).show();
            File root=Environment.getExternalStorageDirectory();

            File dir=new File(root.getAbsolutePath()+"/myappfile");

            if(!dir.exists()){
                dir.mkdir();
            }


        }
        else {
            Toast.makeText(this, "SD card not found", Toast.LENGTH_SHORT).show();
        }`

Which is the version of Android where you are trying it? If it is upper v6 (API 23) you need to request runtime permission to write in the external storage — Alberto Méndez, Mar 01 '17 at 13:13
`dir.mkdir();`. You are not checking the return value. You should check it as it might fail to create the directory. If it fails display a toast to the user telling so. And return. Do not continue with the code. — greenapps, Mar 01 '17 at 14:21
`i am creating folder in external storage.first i need to check that Sd card is present or not`. No not at all as external storage directory has nothing to do with a removable micro SD card. External storage is always present. — greenapps, Mar 01 '17 at 14:24
@ alberto..thank you .i forgot to write run time permissions for mmarshmallow...now folder is created.. — lucky, Mar 03 '17 at 06:45

score 0 · Answer 1 · edited May 23 '17 at 12:09

0

Try this code -

Boolean isSDPresent = android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);

if(isSDPresent)
{
  // yes SD-card is present
 }
else
{
 // Sorry
 }

Source - https://stackoverflow.com/a/7429264/1649353

And also check Environment.isExternalStorageRemovable()

edited May 23 '17 at 12:09

Community

1
1

answered Mar 01 '17 at 13:12

Ambuj Kathotiya

369
4
18

`// yes SD-card is present`. Nonsense. External storage will be present. Has nothing to do with a micro SD card. – greenapps Mar 01 '17 at 14:22
that is why I wrote to check for Environment.isExternalStorageRemovable() – Ambuj Kathotiya Mar 01 '17 at 14:23
@tthank you all..i forgot to add runtime permissions for marshmallow..now its working – lucky Mar 03 '17 at 06:46

creekorful · Answer 2 · 2017-03-01T13:20:09.563

0

Try someting like this

if(Environment.MEDIA_MOUNTED.equals(Environnement.getExternalStorageState()))
{
   File f = new File(Environment.getExternalStorageDirectory(), "/myappfile");
   if (!f.exists()) {
      if.mkdirs();
   }
}

edited Mar 01 '17 at 13:20

answered Mar 01 '17 at 13:12

creekorful

351
4
14

creating folder not visible in file explorer

2 Answers2