Android 执行shell指令
方式一:此方式如果执行的代码带echo开头,会没有作用。可能是echo这个指令会被优先执行。
public static void executeCommand(String command) {
Runtime mRuntime = Runtime.getRuntime();
try {
//Process中封装了返回的结果和执行错误的结果
Process mProcess = mRuntime.exec(command);
BufferedReader mReader = new BufferedReader(new InputStreamReader(mProcess.getInputStream()));
StringBuffer mRespBuff = new StringBuffer();
char[] buff = new char[1024];
int ch = 0;
while ((ch = mReader.read(buff)) != -1) {
mRespBuff.append(buff, 0, ch);
}
mReader.close();
System.out.print(mRespBuff.toString());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
方式二:可以执行echo开头或者ping 开头的shell指令代码
Runtime mRuntime = Runtime.getRuntime();
mRuntime.exec(new String[] {"/bin/sh", "-c", "echo 1 > /sys/class/sensor_class/accel_calibration"});
一个工具类:
public class ShellUtils {
private static final String TAG = "ShellUtils";public static final String COMMAND_SU = "su";
public static final String COMMAND_SH = "sh";
public static final String COMMAND_EXIT = "exit\n";
public static final String COMMAND_LINE_END = "\n";private ShellUtils() {
throw new AssertionError();
}
public static boolean checkRootPermission() {
return execCommand("echo root", true, false).result == 0;
}
public static CommandResult execCommand(String command, boolean isRoot) {
return execCommand(new String[] { command }, isRoot, true);
}
public static CommandResult execCommand(Listcommands,
boolean isRoot) {
return execCommand(
commands == null ? null : commands.toArray(new String[] {}),
isRoot, true);
}
public static CommandResult execCommand(String[] commands, boolean isRoot) {
return execCommand(commands, isRoot, true);
}
public static CommandResult execCommand(String command, boolean isRoot,
boolean isNeedResultMsg) {
return execCommand(new String[] { command }, isRoot, isNeedResultMsg);
}
public static CommandResult execCommand(Listcommands,
boolean isRoot, boolean isNeedResultMsg) {
return execCommand(
commands == null ? null : commands.toArray(new String[] {}),
isRoot, isNeedResultMsg);
}
public static CommandResult execCommand(String[] commands, boolean isRoot,
boolean isNeedResultMsg) {
int result = -1;
if (commands == null || commands.length == 0) {
return new CommandResult(result, null, null);
}Process process = null;
BufferedReader successResult = null;
BufferedReader errorResult = null;
StringBuilder successMsg = null;
StringBuilder errorMsg = null;DataOutputStream os = null;
try {
process = Runtime.getRuntime().exec(isRoot ? COMMAND_SU : COMMAND_SH);
os = new DataOutputStream(process.getOutputStream());
for (String command : commands) {
if (command == null) {
continue;
}
// donnot use os.writeBytes(commmand), avoid chinese charset
// error
os.write(command.getBytes());
os.writeBytes(COMMAND_LINE_END);
os.flush();
}
os.writeBytes(COMMAND_EXIT);
os.flush();
result = process.waitFor();
// get command result
if (isNeedResultMsg) {
successMsg = new StringBuilder();
errorMsg = new StringBuilder();
successResult = new BufferedReader(new InputStreamReader(
process.getInputStream()));
errorResult = new BufferedReader(new InputStreamReader(
process.getErrorStream()));
String s;
while ((s = successResult.readLine()) != null) {
successMsg.append(s);
}
while ((s = errorResult.readLine()) != null) {
errorMsg.append(s);
}
}
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (os != null) {
os.close();
}
if (successResult != null) {
successResult.close();
}
if (errorResult != null) {
errorResult.close();
}
} catch (IOException e) {
e.printStackTrace();
}
if (process != null) {
process.destroy();
}
}
return new CommandResult(result, successMsg == null ? null
: successMsg.toString(), errorMsg == null ? null
: errorMsg.toString());
}
public static class CommandResult {
public int result;
public String successMsg;
public String errorMsg;public CommandResult(int result) {
this.result = result;
}public CommandResult(int result, String successMsg, String errorMsg) {
this.result = result;
this.successMsg = successMsg;
this.errorMsg = errorMsg;
}
}
}
来源地址:https://blog.csdn.net/MilesMatheson/article/details/130759655