令牌“ mkdirs”上的语法错误，此令牌后应有标识符

Question

I'm attempting the create a directory programmaticly to build out the Android Photo Capture app here . I tried creating a class to create the directory before define the path, but Eclipse is throwing the error Syntax error on token "mkdirs", Identifier expected after this token. Should I be running the mkdirs() code elsewhere in the file?

    public class PhotoCaptureExample extends Activity 
    {
         public class Dir
         {
        File folder = new File(Environment.getExternalStorageDirectory().toString()+"/DrawIn");
        folder.mkdirs();

         }

         protected Button _button;

Thank you!

Answer 1

You have code outside of any function. That isn't legal, except for simple initializers.

Answer 2

to create a directory, you could use

File myDirectory = new File(Environment.getExternalStorageDirectory(), "DrawIn");

if(!myDirectory.exists()) {                                 
  myDirectory.mkdirs();
}

don't forget to add permission:

uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"