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android su执行命令

news 2025/11/7 8:24:22

通过Runtime.getRuntime().exec("su")启动su进程，然后使用DataOutputStream向其写入要执行的命令。命令执行完成后需要调用process.waitFor()等待进程结束，并妥善关闭所有流资源


import java.io.DataOutputStream;public class SuCommandExecutor {private static final String TAG = "SuCommandExecutor";/*** 执行需要root权限的单个命令* @param command 要执行的命令* @return 命令执行结果*/public static String execSuCmd(String command) {String output = "";Process process = null;DataOutputStream os = null;DataInputStream is = null;try {// 启动su进程获取root权限process = Runtime.getRuntime().exec("su");os = new DataOutputStream(process.getOutputStream());// 写入要执行的命令os.writeBytes(command + "\n");os.writeBytes("exit\n");os.flush();// 等待命令执行完成int exitCode = process.waitFor();// 读取命令输出is = new DataInputStream(process.getInputStream());byte[] buffer = new byte[is.available()];is.read(buffer);output = new String(buffer);} catch (Exception e) {e.printStackTrace();output = "Exception: " + e.getMessage();} finally {// 关闭所有流资源try {if (os != null) {os.close();}if (is != null) {is.close();}if (process != null) {process.destroy();}} catch (Exception e) {e.printStackTrace();}}return output;}/*** 静默执行root命令（不读取输出）* @param command 要执行的命令* @return 执行结果代码*/public static int execRootCmdSilent(String command) {int result = -1;DataOutputStream dos = null;try {Process process = Runtime.getRuntime().exec("su");dos = new DataOutputStream(process.getOutputStream());dos.writeBytes(command + "\n");dos.flush();dos.writeBytes("exit\n");dos.flush();process.waitFor();result = process.exitValue();} catch (Exception e) {e.printStackTrace();} finally {if (dos != null) {try {dos.close();} catch (IOException e) {e.printStackTrace();}}}return result;}/*** 测试设备是否具有su执行权限* @return 测试结果*/public static boolean testSuPermission() {try {Process process = Runtime.getRuntime().exec("su");DataOutputStream dos = new DataOutputStream(process.getOutputStream());dos.writeBytes("id\n");dos.writeBytes("exit\n");dos.flush();int exitCode = process.waitFor();return exitCode == 0;} catch (Exception e) {return false;}}public static void main(String[] args) {// 测试su权限boolean hasPermission = testSuPermission();System.out.println("设备是否具有su权限: " + hasPermission);if (hasPermission) {// 执行示例命令String result = execSuCmd("ls -l /system");System.out.println("命令执行结果: " + result);}}
}

import java.io.DataOutputStream;new Thread(new Runnable() {@Overridepublic void run() {try {Process process = Runtime.getRuntime().exec("su");DataOutputStream dos = new DataOutputStream(process.getOutputStream());dos.writeBytes("echo 72 > /sys/class/gpio/export"+"\n");dos.flush();dos.writeBytes("echo in > /sys/class/gpio/gpio72/direction"+"\n");dos.flush();dos.writeBytes("echo 78 > /sys/class/gpio/export"+"\n");dos.flush();dos.writeBytes("echo in > /sys/class/gpio/gpio78/direction"+"\n");dos.flush();dos.writeBytes("echo 98 > /sys/class/gpio/export"+"\n");dos.flush();dos.writeBytes("echo in > /sys/class/gpio/gpio98/direction"+"\n");dos.flush();dos.writeBytes("echo 97 > /sys/class/gpio/export"+"\n");dos.flush();dos.writeBytes("echo out > /sys/class/gpio/gpio97/direction"+"\n");dos.flush();dos.writeBytes("echo 62 > /sys/class/gpio/export"+"\n");dos.flush();dos.writeBytes("echo out > /sys/class/gpio/gpio62/direction"+"\n");dos.flush();dos.writeBytes("echo 63 > /sys/class/gpio/export"+"\n");dos.flush();dos.writeBytes("echo out > /sys/class/gpio/gpio63/direction"+"\n");dos.flush();dos.close();} catch (Exception e) {e.printStackTrace();}}}).start();