Android14——把文件存入SDCard中

SDCard在系统的的路径为/mnt/sdcard(mnt为挂载文件的意思)。

在程序中访问SDCard需要的权限：

创建和删除文件权限

MOUNT_UNMOUNT_FILESYSTEMS

写入数据权限

WRITE_EXTERNAL_STORAGE

写入代码：

public void saveToSDCard(String filename, String content) throws Exception{
File file = new File("/mnt/sdcard",filename);
FileOutputStream outStream = new FileOutputStream(file);
outStream.write(content.getBytes());
outStream.close();
}

获得正确的SDCard路径：

Environment.getExternalStorageDirectory()