public
void saveSDCard(String filename,
String filecontent)throws Exception
{
File file =
new File(Environment.getExternalStorageDirectory(),filename);
FileOutputStream outStream =
new FileOutputStream(file);
outStream.write(filecontent.getBytes());
outStream.flush();
outStream.close();
}
王立平--往sdcard中以流的形式存储数据
原文：http://blog.csdn.net/u013425527/article/details/40400169
