How to create sub-folder in SD Card, using Java code

How to create sub-folder in SD Card, using Java code

If you want to create sub-folder in SD Card using Java code, you can use the mkdir() method of java.io.File class.



ex.

      String newFolder = "/myFolder2";
      String extStorageDirectory = Environment.getExternalStorageDirectory().toString();
      File myNewFolder = new File(extStorageDirectory + newFolder);
      myNewFolder.mkdir();

And also, AndroidManifest.xml have to be modify to add permission of "android.permission.WRITE_EXTERNAL_STORAGE"

    package="com.exercise.AndroidNewFolder"
    android:versionCode="1"
    android:versionName="1.0">
  
                      android:label="@string/app_name">
          
              
              
          
      

  
  

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