Android可直接调用Runtime执行shell命令来实现一些功能，在此进行了一个封装。
将需要执行的命令添加到一个数组，并判断是否已root，还有一个回调接口，执行完后把执行结果封装到一个实体类。还有几个重载的执行方法，，主要是接收单个字符串的命令，还有自动判断root的。
public static void execCommand(String[] commands, boolean isRoot,ShellCommandListener listener) throws IOException,InterruptedException, TimeoutException {int exitCode = -1;CommandResult result = null;if (commands == null || commands.length == 0) {result = new CommandResult(exitCode, null, null);listener.onCommandFinished(result);}Process process = null;BufferedReader successReader = null;BufferedReader errorReader = null;StringBuilder successMsg = null;StringBuilder errorMsg = null;DataOutputStream os = null;process = Runtime.getRuntime().exec(isRoot ? "su" : "sh");os = new DataOutputStream(process.getOutputStream());for (String command : commands) {if (command == null) {continue;}// donnot use os.writeBytes(commmand), avoid chinese charset// erroros.write(command.getBytes());os.writeBytes("\n");os.flush();}os.writeBytes("exit\n");os.flush();exitCode = process.waitFor();successMsg = new StringBuilder();errorMsg = new StringBuilder();successReader = new BufferedReader(new InputStreamReader(process.getInputStream()));errorReader = new BufferedReader(new InputStreamReader(process.getErrorStream()));String s = null;while ((s = successReader.readLine()) != null) {successMsg.append(s + "\n");}while ((s = errorReader.readLine()) != null) {errorMsg.append(s + "\n");}if (exitCode == -257) {throw new TimeoutException();}try {if (os != null) {os.close();}if (successReader != null) {successReader.close();}if (errorReader != null) {errorReader.close();}} catch (IOException e) {e.printStackTrace();}if (process != null) {process.destroy();}result = new CommandResult(exitCode, successMsg == null ? null: successMsg.toString(), errorMsg == null ? null: errorMsg.toString());listener.onCommandFinished(result);}/*** result of command,*/public static class CommandResult {/** result of command **/public int exitCode;/** success message of command result **/public String successMsg;/** error message of command result **/public String errorMsg;public CommandResult(int result) {this.exitCode = result;}public CommandResult(int result, String successMsg, String errorMsg) {this.exitCode = result;this.successMsg = successMsg;this.errorMsg = errorMsg;}@Overridepublic String toString() {return "exitCode=" + exitCode + "; successMsg=" + successMsg+ "; errorMsg=" + errorMsg;}}public interface ShellCommandListener {public void onCommandFinished(CommandResult result);}
其实生命无论长短，只要我们能努力绽放出生命的光彩，便会拥有精彩的人生。
