Android 将MAP格式数据写入XML将XMP文件读MAP数据格式中

 其中涉及的部分类可以自行查询，如：AtomicFile.java   FastXmlSerializer.java

private static final String APPCONFIG_FILENAME = "appPowerSaveConfig.xml"; private static final String XML_TAG_FILE = "app_powersave_config"; private static final String XML_TAG_PKG = "package"; private static final String XML_ATTRIBUTE_PKG_NAME = "name"; private static final String XML_ATTRIBUTE_PKG_OPTIMIZE = "optimize"; private static final String XML_ATTRIBUTE_PKG_ALARM = "alarm"; private static final String XML_ATTRIBUTE_PKG_WAKELOCK = "wakelock"; private static final String XML_ATTRIBUTE_PKG_NETWORK = "network"; private static final String XML_ATTRIBUTE_PKG_AUTOLAUNCH = "autolaunch"; private static final String XML_ATTRIBUTE_PKG_SECONDARYLAUNCH = "secondarylaunch"; private static final String XML_ATTRIBUTE_PKG_LOCKSCREENCLEANUP = "lockscreencleanup"; private static final String XML_ATTRIBUTE_PKG_POWERCONSUMERTYPE = "consumertype"; //将一下MAP数据写入XML文件中 public static boolean writeConfig(Map<String, AppPowerSaveConfig> appConfigMap) { AtomicFile aFile = new AtomicFile(new File(new File(Environment.getDataDirectory(), "system"), APPCONFIG_FILENAME)); FileOutputStream stream; try { stream = aFile.startWrite(); } catch (IOException e) { Slog.e(TAG, "Failed to write state: " + e); return false; } try { XmlSerializer serializer = new FastXmlSerializer(); serializer.setOutput(stream, "utf-8"); serializer.startDocument(null, true); serializer.startTag(null, XML_TAG_FILE); if (appConfigMap != null) { for (Map.Entry<String, AppPowerSaveConfig> cur : appConfigMap.entrySet()) { final String appName = cur.getKey(); final AppPowerSaveConfig config = cur.getValue(); if (config.isReset()) continue; serializer.startTag(null, XML_TAG_PKG); serializer.attribute(null, XML_ATTRIBUTE_PKG_NAME, appName); serializer.attribute(null, XML_ATTRIBUTE_PKG_OPTIMIZE, String.valueOf(config.optimize)); serializer.attribute(null, XML_ATTRIBUTE_PKG_ALARM, String.valueOf(config.alarm)); serializer.attribute(null, XML_ATTRIBUTE_PKG_WAKELOCK, String.valueOf(config.wakelock)); serializer.attribute(null, XML_ATTRIBUTE_PKG_NETWORK, String.valueOf(config.network)); serializer.attribute(null, XML_ATTRIBUTE_PKG_AUTOLAUNCH, String.valueOf(config.autoLaunch)); serializer.attribute(null, XML_ATTRIBUTE_PKG_SECONDARYLAUNCH, String.valueOf(config.secondaryLaunch)); serializer.attribute(null, XML_ATTRIBUTE_PKG_LOCKSCREENCLEANUP, String.valueOf(config.lockscreenCleanup)); serializer.attribute(null, XML_ATTRIBUTE_PKG_POWERCONSUMERTYPE, String.valueOf(config.powerConsumerType)); serializer.endTag(null, XML_TAG_PKG); } } serializer.endTag(null, XML_TAG_FILE); serializer.endDocument(); aFile.finishWrite(stream); } catch (IOException e) { Slog.e(TAG, "Failed to write state, restoring backup." + "exp:" + "\n" + e); aFile.failWrite(stream); return false; } return true; } //将XML文件写入一下MAP中 /** * static API used to read the config from /data/system/appPowerSaveConfig.xml * and save them in appConfigMap * @param appConfigMap The configs read from config file will save to it * @return Returns true for sucess.Return false for fail */ public static boolean readConfig(Map<String, AppPowerSaveConfig> appConfigMap) { AtomicFile aFile = new AtomicFile(new File(new File(Environment.getDataDirectory(), "system"), APPCONFIG_FILENAME)); InputStream stream = null; try { stream = aFile.openRead(); } catch (FileNotFoundException exp) { Slog.e(TAG, ">>>file not found," + exp); } if (null == stream) { aFile = new AtomicFile(new File(new File(Environment.getRootDirectory(), "etc"), APPCONFIG_FILENAME)); try { stream = aFile.openRead(); } catch (FileNotFoundException exp) { Slog.e(TAG, ">>>default file not found," + exp); return false; } } try { String appName = null; AppPowerSaveConfig appConfig = null; XmlPullParser pullParser = Xml.newPullParser(); pullParser.setInput(stream, "UTF-8"); int event = pullParser.getEventType(); while (event != XmlPullParser.END_DOCUMENT) { switch (event) { case XmlPullParser.START_DOCUMENT: //retList = new ArrayList<PowerGuruAlarmInfo>(); break; case XmlPullParser.START_TAG: if (XML_TAG_PKG.equals(pullParser.getName())) { appConfig = new AppPowerSaveConfig(); appName = pullParser.getAttributeValue(null, XML_ATTRIBUTE_PKG_NAME); appConfig.optimize = Integer.parseInt(pullParser.getAttributeValue(null, XML_ATTRIBUTE_PKG_OPTIMIZE)); appConfig.alarm = Integer.parseInt(pullParser.getAttributeValue(null, XML_ATTRIBUTE_PKG_ALARM)); appConfig.wakelock = Integer.parseInt(pullParser.getAttributeValue(null, XML_ATTRIBUTE_PKG_WAKELOCK)); appConfig.network = Integer.parseInt(pullParser.getAttributeValue(null, XML_ATTRIBUTE_PKG_NETWORK)); appConfig.autoLaunch = Integer.parseInt(pullParser.getAttributeValue( null, XML_ATTRIBUTE_PKG_AUTOLAUNCH)); appConfig.secondaryLaunch = Integer.parseInt(pullParser.getAttributeValue( null, XML_ATTRIBUTE_PKG_SECONDARYLAUNCH)); appConfig.lockscreenCleanup = Integer.parseInt(pullParser.getAttributeValue( null, XML_ATTRIBUTE_PKG_LOCKSCREENCLEANUP)); appConfig.powerConsumerType = Integer.parseInt(pullParser.getAttributeValue( null, XML_ATTRIBUTE_PKG_POWERCONSUMERTYPE)); } break; case XmlPullParser.END_TAG: if (XML_TAG_PKG.equals(pullParser.getName())) { appConfigMap.put(appName, appConfig); appConfig = null; } break; } event = pullParser.next(); } } catch (IllegalStateException e) { Slog.e(TAG, "Failed parsing " + e); return false; } catch (NullPointerException e) { Slog.e(TAG, "Failed parsing " + e); return false; } catch (NumberFormatException e) { Slog.e(TAG, "Failed parsing " + e); return false; } catch (XmlPullParserException e) { Slog.e(TAG, "Failed parsing " + e); return false; } catch (IOException e) { Slog.e(TAG, "Failed parsing " + e); return false; } catch (IndexOutOfBoundsException e) { Slog.e(TAG, "Failed parsing " + e); return false; } finally { try { stream.close(); } catch (IOException e) { Slog.e(TAG, "Fail to close stream " + e); return false; } catch (Exception e) { Slog.e(TAG, "exception at last,e: " + e); return false; } } return true; }

XML文件格式：

xxxx:/data/system # cat appPowerSaveConfig.xml <?xml version='1.0' encoding='utf-8' standalone='yes' ?> <app_powersave_config> <package name="com.ss.android.ugc.aweme" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="1" secondarylaunch="1" lockscreencleanup="1" consumertype="0" /> <package name="com.android.camera2" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="1" secondarylaunch="1" lockscreencleanup="0" consumertype="4" /> <package name="com.fadisu.cpurun" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="1" secondarylaunch="1" lockscreencleanup="1" consumertype="0" /> <package name="com.pp.assistant" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="1" secondarylaunch="1" lockscreencleanup="0" consumertype="0" /> <package name="com.sprd.sleepwakeuptest" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="2" secondarylaunch="2" lockscreencleanup="2" consumertype="0" /> <package name="sprdtest.message" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="2" secondarylaunch="2" lockscreencleanup="2" consumertype="0" /> <package name="com.xinlian.bitz" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="1" secondarylaunch="1" lockscreencleanup="1" consumertype="1" /> <package name="com.spreadtrum.itestapp" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="2" secondarylaunch="2" lockscreencleanup="2" consumertype="0" /> <package name="com.google.android.gms" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="1" secondarylaunch="1" lockscreencleanup="0" consumertype="4" /> <package name="com.sprd.bmte.coulomb" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="0" secondarylaunch="0" lockscreencleanup="2" consumertype="0" /> <package name="com.comcat.activity" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="2" secondarylaunch="2" lockscreencleanup="2" consumertype="0" /> <package name="com.jio.emiddleware" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="2" secondarylaunch="2" lockscreencleanup="2" consumertype="0" /> <package name="com.tencent.qqlive" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="1" secondarylaunch="1" lockscreencleanup="1" consumertype="1" /> <package name="com.greenpoint.android.mc10086.activity" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="2" secondarylaunch="2" lockscreencleanup="2" consumertype="0" /> <package name="com.spreadst.validdate" optimize="1" alarm="0" wakelock="0" network="0" autolaunch="1" secondarylaunch="1" lockscreencleanup="1" consumertype="0" /> </app_powersave_config>