如何通过sdcard打开pdf文件

我在模拟器里保留了一份pdf文件，并且安装过**adobe reader**。我试过用下面的代码读取模拟器的pdf文件

代码：

File file = 
new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/iTunes Connect.pdf");
        Uri path = Uri.fromFile(file);
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        intent.setDataAndType(path,"application/pdf");
        try 
        {
            startActivity(intent);
        } 
        catch (ActivityNotFoundException e) 
        {
            Toast.makeText(xv.this, 
                getString(R.string.app_name), 
                Toast.LENGTH_SHORT).show();
        }

但是报出：file path is not valid
怎么解决？

new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/iTunes\\ Connect.pdf");