Sd card reader mobile phone case

We do today is

There are two main interface text boxes, two buttons, as in the following image

// This is the address of my coolpad memory card

File file = new File("/storage/sdcard1/liyan.txt");

// This is an internal storage address

String = sdpath Environment.getExternalStorageDirectory () getPath ().;

File file = new File("/storage/emulated/0/liyan.txt");