在SD卡中写入文件
// create a File object for the parent directory
File fileDirectory = new File(Environment.getExternalStorageDirectory()+"/filexxxx");?
?
// have the object build the directory structure, if needed.
fileDirectory.mkdirs();
?
File file = new File(?fileDirectory.getAbsolutePath(),filename );
?
FileOutputStream fos = new FileOutputStream(file);