android mkdirs in SD card return false.help me, it spends me 3days

Question

I want to create a folder in SD card ,and i already add the permission

<user-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

in manifest file.below is my code,but mkdirs return false! Can you help me!

File exportDir = new File(
                Environment.getExternalStorageDirectory().toString(), "happydiarybackup");
        if (!exportDir.exists()) {
            boolean a = exportDir.mkdirs();
            Log.d("mkdir ",exportDir.getAbsolutePath() + " make "+ a);
        }

now it is working.I just put the permission at the first of the manifest file,I don`t know why ,but it`s worked! — user1951072, Jan 06 '13 at 05:46

Ajay S · Accepted Answer · 2013-01-05T15:12:54.513

2

Try this. It might help you.

String fullPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/happydiarybackup/";
try
{
    File dir = new File(fullPath);
    if (!dir.exists()) {
      dir.mkdirs();
    }
}
 catch (Exception e) {
   Log.e("App", "Exception" + e.getMessage());
}

edited Jan 05 '13 at 15:12

answered Jan 05 '13 at 13:41

Ajay S

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Thank you !now it is working.I just put the permission at the first of the manifest file,I don`t know why ,but it`s worked! – user1951072 Jan 06 '13 at 05:48

score 1 · Answer 2 · edited May 23 '17 at 12:15

1

1.Check your compileSdkVersion 2.Android: mkdirs()/mkdir() on external storage returns false. Make sure your put the permission tag in.

edited May 23 '17 at 12:15

Community

1
1

answered Jul 04 '16 at 06:49

FiShboneL

21
4

android mkdirs in SD card return false.help me, it spends me 3days

2 Answers2