本篇文章为大家展示了Shell如何在Android 开发中使用，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。
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Shell核心代码
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.List;
/**
* ShellUtils
*
* Check root
* - {@link ShellUtils#checkRootPermission()}
*
*
* Execte command
* - {@link ShellUtils#execCommand(String, boolean)}
* - {@link ShellUtils#execCommand(String, boolean, boolean)}
* - {@link ShellUtils#execCommand(List, boolean)}
* - {@link ShellUtils#execCommand(List, boolean, boolean)}
* - {@link ShellUtils#execCommand(String[], boolean)}
* - {@link ShellUtils#execCommand(String[], boolean, boolean)}
*
*/
public class 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();
}
/**
* check whether has root permission
*
* @return
*/
public static boolean checkRootPermission() {
return execCommand("echo root", true, false).result == 0;
}
/**
* execute shell command, default return result msg
*
* @param command command
* @param isRoot whether need to run with root
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(String command, boolean isRoot) {
return execCommand(new String[] {command}, isRoot, true);
}
/**
* execute shell commands, default return result msg
*
* @param commands command list
* @param isRoot whether need to run with root
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(List
commands, boolean isRoot) {
return execCommand(commands == null ? null : commands.toArray(new String[] {}), isRoot, true);
}
/**
* execute shell commands, default return result msg
*
* @param commands command array
* @param isRoot whether need to run with root
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(String[] commands, boolean isRoot) {
return execCommand(commands, isRoot, true);
}
/**
* execute shell command
*
* @param command command
* @param isRoot whether need to run with root
* @param isNeedResultMsg whether need result msg
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(String command, boolean isRoot, boolean isNeedResultMsg) {
return execCommand(new String[] {command}, isRoot, isNeedResultMsg);
}
/**
* execute shell commands
*
* @param commands command list
* @param isRoot whether need to run with root
* @param isNeedResultMsg whether need result msg
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(List commands, boolean isRoot, boolean isNeedResultMsg) {
return execCommand(commands == null ? null : commands.toArray(new String[] {}), isRoot, isNeedResultMsg);
}
/**
* execute shell commands
*
* @param commands command array
* @param isRoot whether need to run with root
* @param isNeedResultMsg whether need result msg
* @return
* - if isNeedResultMsg is false, {@link CommandResult#successMsg} is null and
* {@link CommandResult#errorMsg} is null.
* - if {@link CommandResult#result} is -1, there maybe some excepiton.
*
*/
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());
}
/**
* result of command
*
* - {@link CommandResult#result} means result of command, 0 means normal, else means error, same to excute in
* linux shell
* - {@link CommandResult#successMsg} means success message of command result
* - {@link CommandResult#errorMsg} means error message of command result
*
*/
public static class CommandResult {
/** result of command **/
public int result;
/** success message of command result **/
public String successMsg;
/** error message of command result **/
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;
}
}
}小实例
是否root
public Boolean isRooted(){
CommandResult cmdResult = ShellUtils.execCommand("su", true);
if (cmdResult.errorMsg.equals("Permission denied") || cmdResult.result != 0) {
return false;
}else{
return true;
}
}复制文件
String[] commands = new String[] { "mount -o rw,remount /system", "cp /mnt/sdcard/xx.apk /system/app/" };
public boolean copyFile(String[] cmdText){
CommandResult cmdResult = ShellUtils.execCommand(cmdText, true);
if (cmdResult.errorMsg.equals("Permission denied") || cmdResult.result != 0) {
return false;
}else{
return true;
}
}上述内容就是Shell如何在Android 开发中使用，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注创新互联行业资讯频道。
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