本篇主要讲的是如何获取网络类型和运营商名称。
下面是主要内容：
- NetUtils 工具类
- 添加权限
- 具体使用
1.NetUtils工具类（复制既可用）
import android.annotation.SuppressLint;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.telephony.TelephonyManager;
/**
* author: wu
* date: on 2018/11/20.
* describe:获取网络状态
*/
public class NetUtils {
public static final int NETWORK_NONE = 0; // 没有网络连接
public static final int NETWORK_WIFI = 1; // wifi连接
public static final int NETWORK_2G = 2; // 2G
public static final int NETWORK_3G = 3; // 3G
public static final int NETWORK_4G = 4; // 4G
public static final int NETWORK_MOBILE = 5; // 手机流量
/**
* 获取运营商名字
* @return int
*/
public static String getOperatorName(Context context) {
/*
* getSimOperatorName()就可以直接获取到运营商的名字
* 也可以使用IMSI获取，getSimOperator()，然后根据返回值判断，例如"46000"为移动
* IMSI相关链接：http://baike.baidu.com/item/imsi
*/
TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
// getSimOperatorName就可以直接获取到运营商的名字
return telephonyManager.getSimOperatorName();
}
/**
* 获取当前网络连接的类型
* @return int
*/
public static int getNetworkState(Context context) {
ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); // 获取网络服务
if (null == connManager) { // 为空则认为无网络
return NETWORK_NONE;
}
// 获取网络类型，如果为空，返回无网络
@SuppressLint("MissingPermission") NetworkInfo activeNetInfo = connManager.getActiveNetworkInfo();
if (activeNetInfo == null || !activeNetInfo.isAvailable()) {
return NETWORK_NONE;
}
// 判断是否为WIFI
@SuppressLint("MissingPermission") NetworkInfo wifiInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if (null != wifiInfo) {
NetworkInfo.State state = wifiInfo.getState();
if (null != state) {
if (state == NetworkInfo.State.CONNECTED || state == NetworkInfo.State.CONNECTING) {
return NETWORK_WIFI;
}
}
}
// 若不是WIFI，则去判断是2G、3G、4G网
TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
int networkType = telephonyManager.getNetworkType();
switch (networkType) {
/*
GPRS : 2G(2.5) General Packet Radia Service 114kbps
EDGE : 2G(2.75G) Enhanced Data Rate for GSM Evolution 384kbps
UMTS : 3G WCDMA 联通3G Universal Mobile Telecommunication System 完整的3G移动通信技术标准
CDMA : 2G 电信 Code Division Multiple Access 码分多址
EVDO_0 : 3G (EVDO 全程 CDMA2000 1xEV-DO) Evolution - Data Only (Data Optimized) 153.6kps - 2.4mbps 属于3G
EVDO_A : 3G 1.8mbps - 3.1mbps 属于3G过渡，3.5G
1xRTT : 2G CDMA2000 1xRTT (RTT - 无线电传输技术) 144kbps 2G的过渡,
HSDPA : 3.5G 高速下行分组接入 3.5G WCDMA High Speed Downlink Packet Access 14.4mbps
HSUPA : 3.5G High Speed Uplink Packet Access 高速上行链路分组接入 1.4 - 5.8 mbps
HSPA : 3G (分HSDPA,HSUPA) High Speed Packet Access
IDEN : 2G Integrated Dispatch Enhanced Networks 集成数字增强型网络 （属于2G，来自维基百科）
EVDO_B : 3G EV-DO Rev.B 14.7Mbps 下行 3.5G
LTE : 4G Long Term Evolution FDD-LTE 和 TDD-LTE , 3G过渡，升级版 LTE Advanced 才是4G
EHRPD : 3G CDMA2000向LTE 4G的中间产物 Evolved High Rate Packet Data HRPD的升级
HSPAP : 3G HSPAP 比 HSDPA 快些
*/
// 2G网络
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 NETWORK_2G;
// 3G网络
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 NETWORK_3G;
// 4G网络
case TelephonyManager.NETWORK_TYPE_LTE:
return NETWORK_4G;
default:
return NETWORK_MOBILE;
}
}
/**
* 判断网络是否连接
* @return true/false
*/
public static boolean isNetConnected(Context context) {
ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null) {
@SuppressLint("MissingPermission") NetworkInfo info = connectivity.getActiveNetworkInfo();
if (info != null && info.isConnected()) {
if (info.getState() == NetworkInfo.State.CONNECTED) {
return true;
}
}
}
return false;
}
/**
* 判断是否wifi连接
* @return true/false
*/
public static synchronized boolean isWifiConnected(Context context) {
ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivityManager != null) {
@SuppressLint("MissingPermission") NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
if (networkInfo != null) {
int networkInfoType = networkInfo.getType();
if (networkInfoType == ConnectivityManager.TYPE_WIFI || networkInfoType == ConnectivityManager.TYPE_ETHERNET) {
return networkInfo.isConnected();
}
}
}
return false;
}
}2. 添加权限
不要忘记添加权限：
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />3. 具体使用
下面是我在 Activity 中使用方法，获取运营商名称，是否有网络，网络类型等：
private String operatorName;//营运商名字
private int netWorkState;//网络为：2G、3G、4G
private boolean netConnected;//是否有网络
private boolean wifiConnected;//网络是否为wifi
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
operatorName = NetUtils.getOperatorName(this);
netWorkState = NetUtils.getNetworkState(this);
netConnected = NetUtils.isNetConnected(this);
wifiConnected = NetUtils.isWifiConnected(this);
Log.e("==运营商名字", operatorName+"");
Log.e("==网络为", netWorkState+"");
Log.e("==是否有网络", netConnected+"");
Log.e("==网络是否为wifi", wifiConnected+"");
}下面是运行之后的打印结果：
可以看出，我的手机有网络，是 wifi 连接。