sd卡路径File sdCard Environment.getExternalStorageDirectory()?File dir new File (sdcard.getAbs
sd卡路径
File sdCard = Environment.getExternalStorageDirectory();?
File dir = new File (sdcard.getAbsolutePath() + "/dir1/dir2");?
dir.mkdirs();?
File file = new File(dir, "filename");?
?
FileOutputStream f = new FileOutputStream(f);?