android第十一步把文件保存到SDCard

Environment管理外存储设备

 

向SD卡输出文件，Environment.getExternalStorageDirectory().toString()SD卡路径

File file = new File(new File(Environment.getExternalStorageDirectory().toString()),filenametext);
FileOutputStream outStream = new FileOutputStream(file);
outStream.write(filecontenttext.getBytes());
outStream.close();

Environment.MEDIA_开头的是当前SD卡的状态

//判断SD是否存在而且可以读取
if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
{

转载于:https://www.cnblogs.com/zyldream/p/3598006.html