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);?
