TermApp/app/src/main/java/com/xinyingpower/microphoto/DeviceUtil.java

package com.xinyingpower.microphoto;

import android.app.AlarmManager;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.telephony.CellLocation;
import android.telephony.PhoneStateListener;
import android.telephony.ServiceState;
import android.telephony.SignalStrength;
import android.telephony.TelephonyManager;
import android.telephony.cdma.CdmaCellLocation;
import android.telephony.gsm.GsmCellLocation;
import android.util.Log;

public class DeviceUtil {


    public static final int SIGNAL_STRENGTH_NONE_OR_UNKNOWN = 0;

    public static final int SIGNAL_STRENGTH_POOR = 1;

    public static final int SIGNAL_STRENGTH_MODERATE = 2;

    public static final int SIGNAL_STRENGTH_GOOD = 3;

    public static final int SIGNAL_STRENGTH_GREAT = 4;

    public static final int NUM_SIGNAL_STRENGTH_BINS = 5;



    //无 ，低劣的 ，适度的 ，好 ，优异的
    public static final String[] SIGNAL_STRENGTH_NAMES = {
            "none", "poor", "moderate", "good", "great"
    };

    public static String getNetworkType(Context context) {

        // ConnectionManager instance
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo ni = connectivityManager.getActiveNetworkInfo();

        // If not connected, "-" will be displayed
        if (ni == null || !ni.isConnected()) return "";

        // If Connected to Wifi
        if (ni.getType() == ConnectivityManager.TYPE_WIFI) return "WIFI";

        // If Connected to Mobile
        String subTypeName = "";
        if (ni.getType() == ConnectivityManager.TYPE_MOBILE) {
            int subType = ni.getSubtype();
            switch (subType) {
                case TelephonyManager.NETWORK_TYPE_GPRS:
                case TelephonyManager.NETWORK_TYPE_EDGE:
                case TelephonyManager.NETWORK_TYPE_CDMA:
                case TelephonyManager.NETWORK_TYPE_1xRTT:
                case TelephonyManager.NETWORK_TYPE_IDEN:
                case TelephonyManager.NETWORK_TYPE_GSM:
                    subTypeName = "2G";
                    break;
                case TelephonyManager.NETWORK_TYPE_UMTS:
                case TelephonyManager.NETWORK_TYPE_EVDO_0:
                case TelephonyManager.NETWORK_TYPE_EVDO_A:
                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:
                case TelephonyManager.NETWORK_TYPE_TD_SCDMA:
                    subTypeName = "3G";
                    break;
                case TelephonyManager.NETWORK_TYPE_LTE:
                case TelephonyManager.NETWORK_TYPE_IWLAN:
                case 19:
                    subTypeName = "4G";
                    break;
                case TelephonyManager.NETWORK_TYPE_NR:
                    subTypeName = "5G";
                    break;
                default:
                    subTypeName = "";
                    break;
            }
        }
        return subTypeName;
    }

    public static void getPhoneState(Context context) {
        final TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        PhoneStateListener MyPhoneListener = new PhoneStateListener() {
            @Override
            //获取对应网络的ID，这个方法在这个程序中没什么用处
            public void onCellLocationChanged(CellLocation location) {
                if (location instanceof GsmCellLocation) {
                    int CID = ((GsmCellLocation) location).getCid();
                } else if (location instanceof CdmaCellLocation) {
                    int ID = ((CdmaCellLocation) location).getBaseStationId();
                }
            }

            //系统自带的服务监听器，实时监听网络状态
            @Override
            public void onServiceStateChanged(ServiceState serviceState) {
                super.onServiceStateChanged(serviceState);
            }

            //这个是我们的主角，就是获取对应网络信号强度
            @Override
            public void onSignalStrengthsChanged(SignalStrength signalStrength) {
                //这个ltedbm 是4G信号的值
                String signalinfo = signalStrength.toString();
                String[] parts = signalinfo.split(" ");
                String ltedbm = parts[9];
                //这个dbm 是2G和3G信号的值
                int asu = signalStrength.getGsmSignalStrength();
                int dbm = -113 + 2 * asu;

                if (telephonyManager.getNetworkType() == TelephonyManager.NETWORK_TYPE_LTE) {
                    Log.i("NetWorkUtil", "网络：LTE 信号强度：" + ltedbm + "======Detail:" + signalinfo);
                } else if (telephonyManager.getNetworkType() == TelephonyManager.NETWORK_TYPE_HSDPA ||
                        telephonyManager.getNetworkType() == TelephonyManager.NETWORK_TYPE_HSPA ||
                        telephonyManager.getNetworkType() == TelephonyManager.NETWORK_TYPE_HSUPA ||
                        telephonyManager.getNetworkType() == TelephonyManager.NETWORK_TYPE_UMTS) {
                    String bin;
                    if (dbm > -75) {
                        bin = "网络很好";
                    } else if (dbm > -85) {
                        bin = "网络不错";
                    } else if (dbm > -95) {
                        bin = "网络还行";
                    } else if (dbm > -100) {
                        bin = "网络很差";
                    } else {
                        bin = "网络错误";
                    }
                    Log.i("NetWorkUtil", "网络：WCDMA 信号值：" + dbm + "========强度：" + bin + "======Detail:" + signalinfo);
                } else {
                    String bin;
                    if (asu < 0 || asu >= 99) bin = "网络错误";
                    else if (asu >= 16) bin = "网络很好";
                    else if (asu >= 8) bin = "网络不错";
                    else if (asu >= 4) bin = "网络还行";
                    else bin = "网络很差";
                    Log.i("NetWorkUtil", "网络：GSM 信号值：" + dbm + "========强度：" + bin + "======Detail:" + signalinfo);
                }
                super.onSignalStrengthsChanged(signalStrength);
            }
        };
        telephonyManager.listen(MyPhoneListener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);
    }

    public static boolean updateTime(Context context, long timeInMillis) {
        boolean res = false;
        try {
            // Calendar c = Calendar.getInstance();
            // c.set(2010, 1, 1, 12, 00, 00);
            AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
            am.setTime(timeInMillis);
            res = true;
        } catch (Exception ex) {
            int aa = 0;
        }
        return true;
    }

}