private void showFileDir(String path) {
        try {
            Current_Path = path;
            names = new ArrayList<>();
            paths = new ArrayList<>();
            File file = new File(path);
            File[] files = file.listFiles();
            orderByName(files);
            //如果当前目录不是根目录
            if (!ROOT_PATH.equals(path)) {
                names.add("@1");
                paths.add(ROOT_PATH);
                names.add("@2");
                paths.add(file.getParent());
            }
            //添加所有文件
            assert files != null;
            for (File f : files) {
                names.add(f.getName());
                paths.add(f.getPath());
            }
            this.setListAdapter(new MyAdapter(this, names, paths));
        } catch (Exception e) {
            Toast toast = Toast.makeText(this, "Hello Android!",Toast.LENGTH_LONG);
            toast.show();
        }
    }