Android获取设备各项信息（设备id、ip地址、设备名称、运行商、品牌、型号、分辨率、处理器、国家码、系统语言、网络类型、oaid、android版本、操作系统版本、mac地址、应用程序签名..）2

// build.gradle需要引入获取DeviceIdentifier类库
compileOnly 'com.github.gzu-liyujiang:Android_CN_OAID:4.2.3'
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public static String getImei() {
        if (Build.VERSION.SDK_INT < 29) {
            return DeviceIdentifier.getOAID(context));
        } else {
            return DeviceIdentifier.getIMEI(context));
        }
    }

public static String getImei() {
        TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        if (tm == null) {
            return "";
        }
        return tm.getDeviceId();
    }

public static String getMac() {
        if (context == null) {
            return "";
        }
        WifiManager wm = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
        WifiInfo wi = wm.getConnectionInfo();
        if (wi == null || wi.getMacAddress() == null) {
            return "";
        }
        return wi.getMacAddress().trim();
    }

public static String getPackageName() {
        if (context == null) {
            return "";
        }
        return context.getPackageName();
    }

public static String getAppSignature() {
        if (context == null) {
            return "";
        }
        byte[] cert = new byte[0];
        try {
            PackageInfo packageInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), PackageManager.GET_SIGNATURES);
            cert = packageInfo.signatures[0].toByteArray();
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        return cert.toString();
    }

public stpublic static String getAppVersion() {
        if (context == null) {
            return "";
        }
        PackageManager pm = context.getPackageManager();
        PackageInfo pi = null;
        try {
            pi = pm.getPackageInfo(context.getPackageName(), 0);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        return pi.versionName;
    }

public static int getVersionCode() {
        if (context == null) {
            return 0;
        }
        PackageManager pm = context.getPackageManager();
        PackageInfo pi = null;
        try {
            pi = pm.getPackageInfo(context.getPackageName(), 0);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        return pi.versionCode;
    }

public static String getResolution() {
        if (context == null) {
            return "";
        }
        DisplayMetrics dm = context.getResources().getDisplayMetrics();
        int widthPixels = dm.widthPixels;
        int heightPixels = dm.heightPixels;
        return widthPixels + "*" + heightPixels;
    }

public static String getCountry() {
        TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        if (tm == null) {
            return "";
        }
        return tm.getNetworkCountryIso();
    }

public static String getLanguage() {
        return Locale.getDefault().getLanguage();
    }

public static String getMccmnc() {
        TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        if (tm == null) {
            return "";
        }
        return tm.getNetworkOperator();
    }

public static String getNetworkType() {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (cm == null) {
            return "Unknown";
        }
        NetworkInfo activeNetInfo = cm.getActiveNetworkInfo();
        if (activeNetInfo == null || !activeNetInfo.isAvailable()) {
            return "Unknown";
        }
        NetworkInfo wifiInfo = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        if (wifiInfo != null) {
            NetworkInfo.State state = wifiInfo.getState();
            if (state != null && state == NetworkInfo.State.CONNECTED || state == NetworkInfo.State.CONNECTING) {
                return "WiFi";
            }
        }
        NetworkInfo networkInfo = cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        if (networkInfo != null) {
            NetworkInfo.State state = networkInfo.getState();
            String subtypeName = networkInfo.getSubtypeName();
            if (state != null && state == NetworkInfo.State.CONNECTED || state == NetworkInfo.State.CONNECTING) {
                switch (activeNetInfo.getSubtype()) {
                    case TelephonyManager.NETWORK_TYPE_GPRS:
                    case TelephonyManager.NETWORK_TYPE_CDMA:
                    case TelephonyManager.NETWORK_TYPE_EDGE:
                    case TelephonyManager.NETWORK_TYPE_1xRTT:
                    case TelephonyManager.NETWORK_TYPE_IDEN:
                        return "2G";
                    case TelephonyManager.NETWORK_TYPE_EVDO_A:
                    case TelephonyManager.NETWORK_TYPE_UMTS:
                    case TelephonyManager.NETWORK_TYPE_EVDO_0:
                    case TelephonyManager.NETWORK_TYPE_HSDPA:
                    case TelephonyManager.NETWORK_TYPE_HSUPA:
                    case TelephonyManager.NETWORK_TYPE_HSPA:
                    case TelephonyManager.NETWORK_TYPE_EVDO_B:
                    case TelephonyManager.NETWORK_TYPE_EHRPD:
                    case TelephonyManager.NETWORK_TYPE_HSPAP:
                        return "3G";
                    case TelephonyManager.NETWORK_TYPE_LTE:
                        return "4G";
                    default:
                        if (subtypeName.equalsIgnoreCase("TD-SCDMA") || subtypeName.equalsIgnoreCase("WCDMA") || subtypeName.equalsIgnoreCase("CDMA2000")) {
                            return "3G";
                        }
                        return "Unknown";
                }
            }
        }
        return "Unknown";
    }

public static int getAndroidVersion() {
        return Build.VERSION.SDK_INT;
    }
public

public static String getOsVersion() {
        return Build.VERSION.RELEASE;
    }

public static int getTargetSdkVer() {
        if (context == null) {
            return 0;
        }
        return context.getApplicationInfo().targetSdkVersion;
    }

public static long getFirstInstallTime() {
        if (context == null) {
            return 0;
        }
        PackageManager pm = context.getPackageManager();
        PackageInfo packageInfo = null;
        try {
            packageInfo = pm.getPackageInfo(context.getPackageName(), 0);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        return packageInfo.firstInstallTime;
    }