android中怎么打开串口功能

1/yiyaaixuexi/article/details/6803593 3.每次都在java层去提权，cmd为提权命令 public void exeShell(String cmd){ try{ Process p = Runtime.getRuntime().exec(cmd); BufferedReader in = new BufferedReader( new InputStreamReader( p.getInputStream())); String line = null; while ((line = in.readLine()) != null) { Log.i("exeShell",line); } } catch(Throwable t) { t.printStackTrace(); } }