Android Question Help with native Java

[Blueforcer]

I have a industrial panel and need to execute some root commands. The documentation of this panel offers how to in java.
Can someone please help me to use this in B4A? Maybe with inline java or better with B4X Code.

public class RootShellCmd {
    /**
     * 打开蜂鸣器
     */
    public static void openBuzzer_new() {
            exec("echo 1>  /
                sys / class / leds / beep / brightness ");
            }
            /**
             * 关闭蜂鸣器
             */
            public static void closeBuzzer_new() {
                exec("echo 0>  /
                    sys / class / leds / beep / brightness ");
                }

                public static void hide_statusbar() {
                    exec("am broadcast -a action.HIDE_STATUSBAR");
                }
                /**
                 * 显示状态栏
                 */
                public static void show_statusbar() {
                    exec("am broadcast -a action.SHOW_STATUSBAR");
                }
                /**
                 * 请求ROOT权限后执行命令
                 */
                public static void exec(final String cmd) {
                    new Thread(new Runnable() {
                        @Override
                        public void run() {
                            Process process =
                                null;
                            DataOutputStreamos = null;
                            try {
                                try {
                                    process = Runtime.getRuntime().exec("su");
                                } catch (IOException e) {
                                    e.printStackTrace();
                                    process = Runtime.getRuntime().exec("sh");
                                }
                                os = new DataOutputStream(process.getOutputStream());
                                os.writeBytes(cmd + "\n");
                                os.writeBytes("exit\n");
                                process.waitFor();
                            } catch (Exception e) {
                                e.printStackTrace();
                            } finally {
                                try {
                                    if (os != null) {
                                        os.flush();
                                        os.close();

                                    }

                                    process.destroy();
                                } catch (Exception e) {
                                    e.printStackTrace();
                                }
                            }
                        }
                    }).start();
                }
                public static void exec(String...cmds) {
                    StringBuilder command = new StringBuilder();
                    if (cmds.length <= 0) {
                        return;
                    }
                    for (String cmd: cmds) {
                        command.append(cmd).append("\n");
                    }
                    exec(command.toString());
                }
            }

 

[Erel]

There is no multiline strings in Java. The code looks a bit wrong.

You can convert it to B4A with Phone.Shell or ShellAsync.

See this quite old but conceptually correct code: https://www.b4x.com/android/forum/threads/running-shell-commands-as-superuser.6886/#content