Android Studio 执行 su shell 并多次使用它以避免“su”吐司

Question

我目前正在使用此代码发送 su 命令：

   private void execShellCmd(String cmd) {
    try {
        Process process = Runtime.getRuntime().exec("su");
        OutputStream outputStream = process.getOutputStream();
        DataOutputStream dataOutputStream = new DataOutputStream(outputStream);
        dataOutputStream.writeBytes(cmd);
        dataOutputStream.flush();
        dataOutputStream.close();
        outputStream.close();
    } catch (Throwable e) {

    }
}

在应用程序运行时期间，我需要执行多个命令，但使用我的代码，每次都会弹出 su toast 并阻止视图 3 秒。

如何使用 su 会话执行多个命令？

例如

private void initexecShell()
private void execShellCmd(String cmd)
private void execShellCmd(String cmd)
private void execShellCmd(String cmd)
private void closeexecShell()

非常感谢您的帮助！

编辑：例如我尝试了以下方法，但不起作用：

private void test() {
initexecShell();
execShellCmd("command1");
//do something else
execShellCmd("command2");
//do something
execShellCmd("command3");
closeexecShell();

}

Process process;
private void initexecShell()
{
    Process process = Runtime.getRuntime().exec("su");
}
     
private void execShellCmd(String cmd) {
    try {
        
        OutputStream outputStream = process.getOutputStream();
        DataOutputStream dataOutputStream = new DataOutputStream(outputStream);
        dataOutputStream.writeBytes(cmd);
        dataOutputStream.flush();
        dataOutputStream.close();
        outputStream.close();
    } catch (Throwable e) {

    }
}
private void closeexecShell()
{
   //?? no idea 
}

Answer 1

 private void test()
{
    try {
        SystemClock.sleep(5000); // ignore sleep, just for testing
        //It is important to apply for root permission, otherwise it will be useless
        Process process = Runtime.getRuntime().exec("/system/bin/sh");
        OutputStream outputStream = process.getOutputStream();
        DataOutputStream dataOutputStream = new DataOutputStream(outputStream);
        dataOutputStream.writeBytes("su\n");
        dataOutputStream.writeBytes("echo \"hello world\" > /sdcard/log.txt\n");
        SystemClock.sleep(1000);
        dataOutputStream.writeBytes("echo \"hello world\" > /sdcard/log.txt\n");
        SystemClock.sleep(1000);
        dataOutputStream.writeBytes("echo \"hello world\" > /sdcard/log.txt\n");
        dataOutputStream.writeBytes("exit\n");
        dataOutputStream.flush();
        dataOutputStream.close();
        outputStream.close();
    } catch (Throwable e) {
        output1.setText(output1.getText() + "\n" + e.getMessage());
    }
}