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); }
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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