Android Runtime命令行方式实现APK root权限静默安装

本文主要介绍程序如何利用root权限静默安装APK,如何自动选择普通安装还是静默安装以及扩展PackageUtils实现静默删除APK。

1、root权限静默安装调用

直接调用PackageUtils.installSlient函数(直接引入TrineaAndroidCommon@GoogleCode或TrineaAndroidCommon@Github作为你项目的library),系统授权管理会弹出对话框让用户选择是否允许应用获得root权限。允许的话即可静默安装。该函数返回PackageUtils.INSTALL_SUCCEEDED表示安装成功,失败则返回相应错误码,可以得到失败的详细原因,包括文件不存在,apk无效,系统内存不足,签名不正确,缺少公共库,share user错误等等判断。
注意对于较大apk安装过程非常耗时,所以最好新启线程去调用PackageUtils.installSlient。


2、root权限静默安装实现

PackageUtils.installSlient的实现实际使用的是su pm install -r filePath命令。核心代码如下:

PackageUtils.installSlient的实现代码
  Java
  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";
  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 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";
  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());
  }

其中commands为pm install -r . 从中可以看出主要就是使用su切换到root环境下,再调用pm install -r进行安装。


3、普通安装,系统权限静默安装,root权限静默安装的自动选择

查看PackageUtils源码会发现我还提供了其他几个安装函数,其中PackageUtils.install函数会根据是否是系统应用以及是否拥有root权限,从而确定调用哪种安装方式(普通安装方式、root静默安装方式还是系统权限静默安装),源码如下:

Java
  /**
  * install according conditions
  *
  *
  if system application or rooted, see {@link #installSilent(Context, String)}
  *
  else see {@link #installNormal(Context, String)}
  *
  *
  * @param context
  * @param filePath
  * @return
  */
  public static final int install(Context context, String filePath) {
  if (!PackageUtils.isSystemApplication(context)) {
  boolean isRoot = ShellUtils.checkRootPermission();
  if (!isRoot) {
  return installNormal(context, filePath) ? INSTALL_SUCCEEDED : INSTALL_FAILED_INVALID_URI;
  }
  }
  return installSilent(context, filePath);
  }
  /**
  * install according conditions
  *
  *
  if system application or rooted, see {@link #installSilent(Context, String)}
  *
  else see {@link #installNormal(Context, String)}
  *
  *
  * @param context
  * @param filePath
  * @return
  */
  public static final int install(Context context, String filePath) {
  if (!PackageUtils.isSystemApplication(context)) {
  boolean isRoot = ShellUtils.checkRootPermission();
  if (!isRoot) {
  return installNormal(context, filePath) ? INSTALL_SUCCEEDED : INSTALL_FAILED_INVALID_URI;
  }
  }
  return installSilent(context, filePath);
  }


4、扩展PackageUtils 实现静默卸载应用

没有时间实现静默卸载应用的代码,不过原理都一样,请参考PackageUtils.installSlient编写root权限静默删除应用代码。使用pm uninstall [-k] PACKAGE命令即可。


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