android - 如何以编程方式关闭 Android 4.0 root 设备

Question

请帮助我找到解决方案，我知道有很多问题和重复的问题，但在这里我描述了我尝试过的所有事情。

我有一台安装了 4.0 版 android 的 android 设备。我想使用我的一个演示应用程序关闭此设备。

1) Demo application is signed by platform keys which are used in built in file system.
2) Device is already rooted as its development board and i have all permissions on this.

应用程序包含以下内容

1) Application is system application
2) Application signed by platform keys which are used in built in file system.

为了使自动化更容易，我确实将 key/cert 对导入到我的 java keystore 文件中，使用这个 keytool-importkeypair并使用 eclipse 进行签名。

下面提到了使用的命令。

命令: keytool-importkeypair -k ~/Desktop/myown.keystore -p android -pk8 platform.pk8 -cert platform.x509.pem -alias platform

我使用以下代码进行重启，但我从未在这方面取得成功。我在 stackoverflow 上阅读了很多问题和答案，但他们都说你需要

1) root access of device
2) signed apk with any one keys which are available on `build/target/product/security/`
3) Given Proper permission in AndroidManifest.xml file.

我的分数是否正确？

申请代码:

第一次尝试

public static void shutdown2() {

Runtime runtime = Runtime.getRuntime();
Process proc = null;
OutputStreamWriter osw = null;

String command = "/system/bin/reboot -p";

try { // Run Script

    proc = runtime.exec("/system/xbin/su");
    osw = new OutputStreamWriter(proc.getOutputStream());
    osw.write(command);
    osw.flush();
    osw.close();

} catch (IOException ex) {
    ex.printStackTrace();
} finally {
    if (osw != null) {
        try {
            osw.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
try {
    if (proc != null)
        proc.waitFor();
} catch (InterruptedException e) {
    e.printStackTrace();
}
if (proc.exitValue() != 0) {
}
 }

第二次尝试:

private void shutdown3() {
        try {

            String[] cmd = { "/system/bin/sh","su","reboot -p"};

            Process proc = Runtime.getRuntime().exec(cmd);
            proc.waitFor();
        } catch (Exception ex) {
            Log.i("TAG", "Could not reboot 3  ", ex);
        }
    }

第三次尝试:

private void shutdown() {
        try {
            Process proc = Runtime.getRuntime().exec(
                    new String[] { "/system/bin/su", "-c",
                            "/system/bin/reboot -p" });
            proc.waitFor();
        } catch (Exception ex) {
            Log.i("TAG", "Could not reboot 1 ", ex);
        }
    }

在第三种方法中，我也尝试了 "/system/bin/su"

Answer 1

下面的代码对我有用

        Process process = Runtime.getRuntime()
                .exec(new String[]{ "su", "-c", "busybox poweroff -f"});
        process.waitFor();