java - how to add deault image in directory??? when create new directory -

how add default image when create directory? code below create directory using alert dailog, want add default image automaticallly if directory created, do?

deault image id (r.drawable.myimage). want add image in directory when directory created.

alertdialog.builder alert = new alertdialog.builder(context); alert.settitle("add new photo folder"); // set alert dialog  // title here alert.setmessage("enter folder name "); // message here  // set edittext view user input final edittext input = new edittext(context); alert.setview(input);  alert.setpositivebutton("ok", new dialoginterface.onclicklistener() {     public void onclick(dialoginterface dialog, int whichbutton) {         string srt = input.geteditabletext().tostring();         toast.maketext(context, srt, toast.length_long).show();          file photos = new         file(getfilesdir(), srt);          if (!photos.exists()) {             photos.mkdirs();              gridview.invalidateviews();             gridview.setadapter(simpleadapter);              inflatelistview(currentfiles);             finish();              startactivity(getintent());         } else {             toast.maketext(context, "already exist folder", toast.length_long).show();         }     } });  alert.setnegativebutton("cancel", new dialoginterface.onclicklistener() {     public void onclick(dialoginterface dialog, int whichbutton) {         // canceled.         dialog.cancel();     } }); // end of alert.setnegativebutton  alertdialog alertdialog = alert.create();