获取App应用系统基本信息 → AppSysMgr

   package com.jingewenku.abrahamcaijin.commonutil;
 import android.Manifest; import android.accounts.Account; import android.accounts.AccountManager; import android.app.Activity; import android.bluetooth.BluetoothAdapter; import android.content.Context; import android.content.pm.PackageManager; import android.database.Cursor; import android.graphics.BitmapFactory; import android.net.Uri; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.os.Build; import android.os.Vibrator; import android.provider.Settings; import android.telephony.CellLocation; import android.telephony.TelephonyManager; import android.util.DisplayMetrics; import android.view.WindowManager; import android.webkit.WebView;   import java.io.IOException; import java.io.InputStreamReader; import java.io.LineNumberReader; import java.net.InetAddress; import java.net.NetworkInterface; import java.net.SocketException; import java.util.Enumeration; import java.util.Locale; import java.util.UUID;     /** * 主要功能: 获取App应用系统基本信息 * * @Prject: CommonUtilLibrary * @Package: com.jingewenku.abrahamcaijin.commonutil * @author: AbrahamCaiJin * @date: 2017年05月04日 14:13 * @Copyright: 个人版权所有 * @Company: * @version: 1.0.0 */ @SuppressWarnings("deprecation") public class AppSysMgr {     public static final int DEFAULT_THREAD_POOL_SIZE= getSysDefaultThreadPoolSize();     /** * 获得客户端操作系统名称 * @return */ public static String getSysClientOs() { String OsName= android.os.Build.ID; return OsName; }   /** * 获取当前操作系统的sdk版本 * @return String 系统SDK版本 */ public static String getSysSdk() { String sdkVersion = android.os.Build.VERSION.SDK; AppLogMessageMgr.i("AppSysMgr-->>getSysLanguage", sdkVersion); return sdkVersion; }   /** * 获取当前操作系统的语言 * @return String 系统语言 */ public static String getSysLanguage() { String language = Locale.getDefault().getLanguage(); AppLogMessageMgr.i("AppSysMgr-->>getSysLanguage", language); return language; }     /** * 获取手机型号 * @return String 手机型号 */ public static String getSysModel() { String model = android.os.Build.MODEL; AppLogMessageMgr.i("AppSysMgr-->>getSysModel", model); return model; }     /** * 获取操作系统的版本号 * @return String 系统版本号 */ public static String getSysRelease() { String release = android.os.Build.VERSION.RELEASE; AppLogMessageMgr.i("AppSysMgr-->>getSysRelease", release); return release; }     /** * 读取SIM卡序列号 * @param content 上下文 * @return String SIM卡序列号 */ public static String getSysSIMSerialNum(Context content) { String simSerialNumber = getSysTelephonyManager(content).getSimSerialNumber(); AppLogMessageMgr.i("AppSysMgr-->>getSysSIMSerialNum", simSerialNumber); return simSerialNumber; }     /** * 获取手机CPU序列号 * @return String cpu序列号(16位) 读取失败为"0000000000000000" */ public static String getSysCPUSerialNum() { String str = "", strCPU= "", cpuSerialNum= "0000000000000000"; try { //读取CPU信息 Process pp = Runtime.getRuntime().exec("cat/proc/cpuinfo"); InputStreamReader ir = new InputStreamReader(pp.getInputStream()); LineNumberReader input = new LineNumberReader(ir); //查找CPU序列号 for (int i= 1; i < 100; i++) { str = input.readLine(); if (str != null) { //查找到序列号所在行 if (str.indexOf("Serial")> -1) { //提取序列号 strCPU = str.substring(str.indexOf(":")+ 1, str.length()); //去空格 cpuSerialNum = strCPU.trim(); break; } }else{ break; } } } catch (IOException e) { e.printStackTrace(); AppLogMessageMgr.e("AppSysMgr-->>getSysCPUSerialNum", e.getMessage().toString()); } return cpuSerialNum; }     /** * 获得电话管理实例对象 * @param content 上下文 * @return TelephonyManager 电话管理实例对象 */ private static TelephonyManager getSysTelephonyManager(Context content) { TelephonyManager telephonyManager = null; telephonyManager = (TelephonyManager) content.getSystemService(Context.TELEPHONY_SERVICE); AppLogMessageMgr.i("AppSysMgr-->>getSysTelephonyManager", telephonyManager + ""); return telephonyManager; }       /** * 读唯一的设备ID(唯一的设备ID【GSM手机的IMEI】和【CDMA手机的 MEID】,如果获取不到返回一个默认字符串) * @param content 上下文 * @return String 获取设备序列号 */ public static String getSysTelephoneSerialNum(Context content) { String deviceId = getSysTelephonyManager(content).getDeviceId(); AppLogMessageMgr.i("AppSysMgr-->>getSysTelephoneSerialNum", deviceId + ""); return deviceId; }       /** * 获取运营商信息(三大运营商) * @param content 上下文 * @return String 获取运营商名称 */ public static String getSysCarrier(Context content) { String moblieType = ""; TelephonyManager telephonyManager = (TelephonyManager) content.getSystemService(Context.TELEPHONY_SERVICE); String imsi = telephonyManager.getSubscriberId(); if (imsi != null && imsi.length() > 0) { //因为移动网络编号46000下的IMSI已经用完，所以虚拟了一个46002编号，134/159号段使用了此编号 if (imsi.startsWith("46000")|| imsi.startsWith("46002")) { //中国移动 moblieType = "China Mobile"; } else if (imsi.startsWith("46001")) { //中国联通 moblieType = "China Unicom"; } else if (imsi.startsWith("46003")) { //中国电信 moblieType = "China Telecom"; } } AppLogMessageMgr.i("AppSysMgr-->>getSysCarrier", moblieType); return moblieType; }     /** * 获取手机状态(0：无活动 1：响铃 2：待机) * @param context 上下文 * @return Integer 手机状态 */ public static Integer getSysPhoneState(Context context) { Integer callState = getSysTelephonyManager(context).getCallState(); AppLogMessageMgr.i("AppSysMgr-->>getSysPhoneState", callState + ""); return callState; }     /** * 获得手机方位 * @param context 上下文 * @return CellLocation 手机方位 */ public static CellLocation getSysPhoneLoaction(Context context) { CellLocation cellLocation = getSysTelephonyManager(context).getCellLocation(); AppLogMessageMgr.i("AppSysMgr-->>getSysPhoneLoaction", cellLocation + ""); return cellLocation; }     /** * 获得设备的软件版本号(注：the IMEI/SV(software version) for GSM phones 不支持返回“not available”) * @param context 上下文 * @return String 设备软件版本号 */ public static String getSysDeviceSoftVersion(Context context) { String deviceSoftwareVersion = getSysTelephonyManager(context).getDeviceSoftwareVersion(); AppLogMessageMgr.i("AppSysMgr-->>getSysDeviceSoftVersion", deviceSoftwareVersion + ""); return deviceSoftwareVersion; }     /** * 获得手机号 * @param context 上下文 * @return String 手机号 */ public static String getSysPhoneNumber(Context context) { String phoneNumber = getSysTelephonyManager(context).getLine1Number(); AppLogMessageMgr.i("AppSysMgr-->>getSysPhoneNumber", phoneNumber + ""); return phoneNumber; }     /** * 获得SIM卡提供的移动国家码和移动网络码.5或6位的十进制数字。(注：SIM卡的状态必须是 SIM_STATE_READY(使用getSimState()判断)) * @param context 上下文 * @return String SIM移动国家编码和移动网络编码 */ public static String getSysSimCode(Context context) { String code = ""; if (getSysTelephonyManager(context).getSimState()== 5) { code = getSysTelephonyManager(context).getSimOperator(); } AppLogMessageMgr.i("AppSysMgr-->>getSysSimCode", code + ""); return code; }     /** * 服务商名称(注:例如：中国移动、联通SIM卡的状态必须是 SIM_STATE_READY(使用getSimState()判断)). * @param context 上下文 * @return String 服务商名称 */ public static String getSysSimPrivatorName(Context context) { String simOperatorName = ""; if (getSysTelephonyManager(context).getSimState()== 5) { simOperatorName = getSysTelephonyManager(context).getSimOperatorName(); } AppLogMessageMgr.i("AppSysMgr-->>getSysSimPrivatorName", simOperatorName); return simOperatorName; }       /** * 唯一的用户ID (注：例如：IMSI(国际移动用户识别码) for a GSM phone. 需要权限：READ_PHONE_STATE) * @param context 上下文 * @return String 获取国际移动用户GSM识别码 */ public static String getSysUserPhoneId(Context context) { String subscriberId = getSysTelephonyManager(context).getSubscriberId(); AppLogMessageMgr.i("AppSysMgr-->>getSysUserPhoneId", subscriberId); return subscriberId; }     /** * 获取WindowManager对象 * @param context 上下文对象 * @return WindowManager */ public static WindowManager getWindowManager(Context context){ return (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); }     /** * 获取屏幕管理类 * @param activity activity对象 * @return DisplayMetrics 屏幕管理实例 */ public static DisplayMetrics getSysDisplayMetrics(Activity activity) { DisplayMetrics displayMetrics = null; if (displayMetrics == null) { displayMetrics = new DisplayMetrics(); } activity.getWindowManager().getDefaultDisplay().getMetrics(displayMetrics); AppLogMessageMgr.i("AppSysMgr-->>getSysDisplayMetrics","获取屏幕管理对象为："+ displayMetrics); return displayMetrics; }     /** * 获取屏幕宽度和高度并返回数组 * @param context 上下文对象 * @return int[] 宽和高 */ public static int[] getScreenDispaly(Context context) { WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); //手机屏幕的宽度 int width = wm.getDefaultDisplay().getWidth(); //手机屏幕的高度 int height = wm.getDefaultDisplay().getHeight(); AppLogMessageMgr.i("AppSysMgr-->>getScreenDispaly-->>width","获取屏幕宽度为："+ width); AppLogMessageMgr.i("AppSysMgr-->>getScreenDispaly-->>height","获取屏幕高度为："+ height); int result[] = { width, height }; return result; }       /** * 获取屏幕宽度和高度并返回数组 * @param context 上下文对象 * @return int[] 宽和高 */ public static int[] getScreenDispaly8(Context context) { WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); //手机屏幕的宽度 int width = wm.getDefaultDisplay().getWidth()/10* 8; //手机屏幕的高度 int height = wm.getDefaultDisplay().getHeight()/10* 8; AppLogMessageMgr.i("AppSysMgr-->>getScreenDispaly-->>width","获取屏幕宽度为："+ width); AppLogMessageMgr.i("AppSysMgr-->>getScreenDispaly-->>height","获取屏幕高度为："+ height); int result[] = { width, height }; return result; }     /** * 获取屏幕宽度 * @param context 上下文对象 * @return Integer 屏幕宽度 */ public static Integer getSysScreenWidth(Context context) { WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); DisplayMetrics displayMetrics = new DisplayMetrics(); wm.getDefaultDisplay().getMetrics(displayMetrics); AppLogMessageMgr.i("AppSysMgr-->>getSysScreenWidth","获取屏幕宽度为："+ displayMetrics.widthPixels); return displayMetrics.widthPixels; }     /** * 获取屏幕高度 * @param context 上下文对象 * @return Integer 屏幕高度 */ public static Integer getSysScreenHeight(Context context) { WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); DisplayMetrics displayMetrics = new DisplayMetrics(); wm.getDefaultDisplay().getMetrics(displayMetrics); AppLogMessageMgr.i("AppSysMgr-->>getSysScreenHeight","获取屏幕高度为："+ displayMetrics.heightPixels); return displayMetrics.heightPixels; }       /** * 获取屏幕状态栏目高度 * @param context 上下文对象 * @return Integer 状态栏高度 */ public static Integer getSysScreenStatusHeight(Context context) { int statusHeight = 0; try { Class<?> clazz = Class.forName("com.android.internal.R$dimen"); Object object = clazz.newInstance(); int height = Integer.parseInt(clazz.getField("status_bar_height").get(object).toString()); statusHeight = context.getResources().getDimensionPixelSize(height); AppLogMessageMgr.i("AppSysMgr-->>getSysScreenStatusHeight","获取屏幕状态栏高度为："+ statusHeight); } catch (Exception e) { e.printStackTrace(); AppLogMessageMgr.e("AppSysMgr-->>getSysScreenStatusHeight","获取屏幕状态栏高度失败！"+ e.getMessage()); } return statusHeight; }     /** * 获得系统配置相符的线程池大小 * @return Integer 返回系统配置相符合线程大小 */ public static Integer getSysDefaultThreadPoolSize() { Integer availableProcessors = 2 * Runtime.getRuntime().availableProcessors()+ 1; availableProcessors = availableProcessors> 8 ? 8 : availableProcessors; AppLogMessageMgr.i("AppSysMgr-->>getSysDefaultThreadPoolSize", availableProcessors + ""); return availableProcessors; }           /** * 获取当前APP应用的SampleSize大小 * @param options BitmapFactory.Options对象 * @param minSideLength 计算最小值 * @param maxNumOfPixels 计算最大值 * @return Integer 返回SampleSize大小 */ public static Integer getSysSampleSize(BitmapFactory.Optionsoptions, int minSideLength, int maxNumOfPixels) { Integer initialSize = calculateSysInitialSampleSize(options, minSideLength, maxNumOfPixels); Integer roundedSize; if (initialSize <= 8 ) { roundedSize = 1; while (roundedSize < initialSize) { roundedSize <<=1; } }else{ roundedSize = (initialSize+ 7) / 8 * 8; } AppLogMessageMgr.i("AppSysMgr-->>getSysSampleSize", roundedSize + ""); return roundedSize; }     /** * 计算公式 * @param options BitmapFactory.Options对象 * @param minSideLength 计算最小值 * @param maxNumOfPixels 计算最大值 * @return Integer  */ private static Integer calculateSysInitialSampleSize(BitmapFactory.Optionsoptions,intminSideLength, int maxNumOfPixels) { double w = options.outWidth; double h = options.outHeight; Integer lowerBound = (maxNumOfPixels ==-1)? 1 : (int)Math.ceil(Math.sqrt(w* h / maxNumOfPixels)); Integer upperBound = (minSideLength ==-1)? 128 : (int)Math.min(Math.floor(w/ minSideLength), Math.floor(h / minSideLength)); if (upperBound < lowerBound) { return lowerBound; } if ((maxNumOfPixels == -1)&& (minSideLength == -1)) { return 1; } else if (minSideLength ==-1) { return lowerBound; } else { return upperBound; } }     /** * 获取震动器对象 * @param context 上下文对象 * @return Vibrator 震动器对象 */ public static Vibrator getVibrator(Context context){ return (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE); }     /** * 获取手机IP地址 * @return String 手机IP地址 */ public String getSysLocalIpAddress() { String hostAddress = null; try { for (Enumeration<NetworkInterface> en= NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) { NetworkInterface intf = en.nextElement(); for (Enumeration<InetAddress> enumIpAddr= intf.getInetAddresses(); enumIpAddr.hasMoreElements();) { InetAddress inetAddress = enumIpAddr.nextElement(); if (!inetAddress.isLoopbackAddress()) { hostAddress = inetAddress.getHostAddress(); } } } } catch (SocketException e) { e.printStackTrace(); AppLogMessageMgr.e("AppSysMgr-->>getSysLocalIpAddress", e.getMessage().toString()); } AppLogMessageMgr.i("AppSysMgr-->>getSysLocalIpAddress", hostAddress); return hostAddress; }   /** *获取AndroidID * @param ctx * @return */ public static String getAndroidID(Context ctx) { return Settings.Secure.getString(ctx.getContentResolver(),Settings.Secure.ANDROID_ID); }   /** * 获取设备IMSI码 * @param ctx * @return */ public static String getIMSI(Context ctx) { TelephonyManager tm = (TelephonyManager) ctx.getSystemService(Context.TELEPHONY_SERVICE); return tm.getSubscriberId()!= null ? tm.getSubscriberId(): null; }   /** * 获取网络IP地址(优先获取wifi地址) * @param ctx * @return */ public static String getIP(Context ctx) { WifiManager wifiManager = (WifiManager) ctx.getSystemService(Context.WIFI_SERVICE); return wifiManager.isWifiEnabled()? getWifiIP(wifiManager) : getGPRSIP(); }   /** * 获取WIFI连接下的ip地址 * @param wifiManager * @return */ public static String getWifiIP(WifiManager wifiManager) { WifiInfo wifiInfo = wifiManager.getConnectionInfo(); String ip = intToIp(wifiInfo.getIpAddress()); return ip != null ? ip : ""; }   /** * 获取GPRS连接下的ip地址 * @return */ public static String getGPRSIP() { String ip = null; try { for (Enumeration<NetworkInterface> en= NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) { for (Enumeration<InetAddress> enumIpAddr= en.nextElement().getInetAddresses(); enumIpAddr.hasMoreElements(); ) { InetAddress inetAddress = enumIpAddr.nextElement(); if (!inetAddress.isLoopbackAddress()) { ip = inetAddress.getHostAddress(); } } } } catch (SocketException e) { e.printStackTrace(); ip = null; } return ip; }   private static String intToIp(int i) { return (i & 0xFF) + "."+ ((i >> 8) & 0xFF) + "."+ ((i >> 16) & 0xFF) + "."+ (i >> 24 & 0xFF); }   /** * 获取设备序列号 * @return */ public static String getSerial() { return Build.SERIAL; }   /** * 获取SIM序列号 * @param ctx * @return */ public static String getSIMSerial(Context ctx) { TelephonyManager tm = (TelephonyManager) ctx.getSystemService(Context.TELEPHONY_SERVICE); return tm.getSimSerialNumber(); }   /** * 获取网络运营商 46000,46002,46007 中国移动,46001 中国联通,46003 中国电信 * @param ctx * @return */ public static String getMNC(Context ctx) { String providersName = ""; TelephonyManager telephonyManager = (TelephonyManager) ctx.getSystemService(Context.TELEPHONY_SERVICE); if (telephonyManager.getSimState()== TelephonyManager.SIM_STATE_READY) { providersName = telephonyManager.getSimOperator(); providersName = providersName== null ? "": providersName; } return providersName; }   /** * 获取网络运营商：中国电信,中国移动,中国联通 * @param ctx * @return */ public static String getCarrier(Context ctx) { TelephonyManager tm = (TelephonyManager) ctx.getSystemService(Context.TELEPHONY_SERVICE); return tm.getNetworkOperatorName().toLowerCase(Locale.getDefault()); }   /** * 获取硬件型号 * @return */ public static String getModel() { return Build.MODEL; }   /** * 获取编译厂商 * @return */ public static String getBuildBrand() { return Build.BRAND; }   /** *获取编译服务器主机 * @return */ public static String getBuildHost() { return Build.HOST; }   /** *获取描述Build的标签 * @return */ public static String getBuildTags() { return Build.TAGS; }   /** *获取系统编译时间 * @return */ public static long getBuildTime() { return Build.TIME; }   /** *获取系统编译作者 * @return */ public static String getBuildUser() { return Build.USER; }   /** *获取编译系统版本(5.1) * @return */ public static String getBuildVersionRelease() { return Build.VERSION.RELEASE; }   /** *获取开发代号 * @return */ public static String getBuildVersionCodename() { return Build.VERSION.CODENAME; }   /** * 获取源码控制版本号 * @return */ public static String getBuildVersionIncremental() { return Build.VERSION.INCREMENTAL; }   /** *获取编译的SDK * @return */ public static int getBuildVersionSDK() { return Build.VERSION.SDK_INT; }   /** *获取修订版本列表(LMY47D) * @return */ public static String getBuildID() { return Build.ID; }   /** *CPU指令集 * @return */ public static String[] getSupportedABIS() { String[] result = new String[]{"-"}; if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.LOLLIPOP) { result = Build.SUPPORTED_ABIS; } if (result == null || result.length == 0) { result = new String[]{"-"}; } return result; }   /** *获取硬件制造厂商 * @return */ public static String getManufacturer() { return Build.MANUFACTURER; }   /** *获取系统启动程序版本号 * @return */ public static String getBootloader() { return Build.BOOTLOADER; }   /** * * @param ctx * @return */ public static String getScreenDisplayID(Context ctx) { WindowManager wm = (WindowManager) ctx.getSystemService(Context.WINDOW_SERVICE); return String.valueOf(wm.getDefaultDisplay().getDisplayId()); }   /** * 获取系统版本号 * @return */ public static String getDisplayVersion() { return Build.DISPLAY; }   /** *获取语言 * @return */ public static String getLanguage() { return Locale.getDefault().getLanguage(); }   /** * 获取国家 * @param ctx * @return */ public static String getCountry(Context ctx) { TelephonyManager tm = (TelephonyManager) ctx.getSystemService(Context.TELEPHONY_SERVICE); Locale locale = Locale.getDefault(); return tm.getSimState()== TelephonyManager.SIM_STATE_READY? tm.getSimCountryIso().toLowerCase(Locale.getDefault()): locale.getCountry().toLowerCase(locale); }   /** *获取系统版本:5.1.1 * @return */ public static String getOSVersion() { return Build.VERSION.RELEASE; }   /** *获取GSF序列号 * @param context * @return */ //<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/> public static String getGSFID(Context context) { String result; final Uri URI = Uri.parse("content://com.google.android.gsf.gservices"); final String ID_KEY = "android_id"; String[] params = {ID_KEY}; Cursor c = context.getContentResolver().query(URI,null, null, params, null); if (c == null || !c.moveToFirst()|| c.getColumnCount()< 2) { return null; } else { result = Long.toHexString(Long.parseLong(c.getString(1))); } c.close(); return result; }   /** * 获取蓝牙地址 * @param context * @return */ //<uses-permission android:name="android.permission.BLUETOOTH"/> @SuppressWarnings("MissingPermission") public static String getBluetoothMAC(Context context) { String result = null; try { if (context.checkCallingOrSelfPermission(Manifest.permission.BLUETOOTH) == PackageManager.PERMISSION_GRANTED) { BluetoothAdapter bta = BluetoothAdapter.getDefaultAdapter(); result = bta.getAddress(); } } catch (Exception e) { e.printStackTrace(); } return result; }   /** * Android设备物理唯一标识符 * @return */ public static String getPsuedoUniqueID() { String devIDShort = "35"+ (Build.BOARD.length()% 10) + (Build.BRAND.length()% 10); if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.LOLLIPOP) { devIDShort += (Build.SUPPORTED_ABIS[0].length()% 10); } else { devIDShort += (Build.CPU_ABI.length()% 10); } devIDShort += (Build.DEVICE.length()% 10) + (Build.MANUFACTURER.length()% 10) + (Build.MODEL.length()% 10) + (Build.PRODUCT.length()% 10); String serial; try { serial = Build.class.getField("SERIAL").get(null).toString(); return new UUID(devIDShort.hashCode(), serial.hashCode()).toString(); } catch (Exception e) { serial = "ESYDV000"; } return new UUID(devIDShort.hashCode(), serial.hashCode()).toString(); }   /** * 构建标识,包括brand,name,device,version.release,id,version.incremental,type,tags这些信息 * @return */ public static String getFingerprint() { return Build.FINGERPRINT; }   /** * 获取硬件信息 * @return */ public static String getHardware() { return Build.HARDWARE; }   /** * 获取产品信息 * @return */ public static String getProduct() { return Build.PRODUCT; }   /** * 获取设备信息 * @return */ public static String getDevice() { return Build.DEVICE; }   /** * 获取主板信息 * @return */ public static String getBoard() { return Build.BOARD; }   /** * 获取基带版本(无线电固件版本 Api14以上) * @return */ public static String getRadioVersion() { return Build.VERSION.SDK_INT>= Build.VERSION_CODES.ICE_CREAM_SANDWICH? Build.getRadioVersion(): ""; }   /** * 获取的浏览器指纹(User-Agent) * @param ctx * @return */ public static String getUA(Context ctx) { final String system_ua = System.getProperty("http.agent"); if (Build.VERSION.SDK_INT>= Build.VERSION_CODES.JELLY_BEAN_MR1) { return new WebView(ctx).getSettings().getDefaultUserAgent(ctx)+ "__"+ system_ua; } else { return new WebView(ctx).getSettings().getUserAgentString()+ "__"+ system_ua; } }   /** * 获取得屏幕密度 * @param ctx * @return */ public static String getDensity(Context ctx) { String densityStr = null; final int density = ctx.getResources().getDisplayMetrics().densityDpi; switch (density) { case DisplayMetrics.DENSITY_LOW: densityStr = "LDPI"; break; case DisplayMetrics.DENSITY_MEDIUM: densityStr = "MDPI"; break; case DisplayMetrics.DENSITY_TV: densityStr = "TVDPI"; break; case DisplayMetrics.DENSITY_HIGH: densityStr = "HDPI"; break; case DisplayMetrics.DENSITY_XHIGH: densityStr = "XHDPI"; break; case DisplayMetrics.DENSITY_400: densityStr = "XMHDPI"; break; case DisplayMetrics.DENSITY_XXHIGH: densityStr = "XXHDPI"; break; case DisplayMetrics.DENSITY_XXXHIGH: densityStr = "XXXHDPI"; break; } return densityStr; }   /** * 获取google账号 * @param ctx * @return */ //<uses-permission android:name="android.permission.GET_ACCOUNTS"/> @SuppressWarnings("MissingPermission") public static String[] getGoogleAccounts(Context ctx) { if (ctx.checkCallingOrSelfPermission(Manifest.permission.GET_ACCOUNTS)== PackageManager.PERMISSION_GRANTED) { Account[] accounts = AccountManager.get(ctx).getAccountsByType("com.google"); String[] result = new String[accounts.length]; for (int i= 0; i < accounts.length; i++) { result[i] = accounts[i].name; } return result; } return null; }   }